enhanced interference measurement method for channel state information feedback (csi)

专利摘要:
Patent Specification: "Enhanced Interference Measurement Method for Channel State Information (CSI) Feedback". Modalities for providing enhanced interference measurements for csi feedback are described herein. In some embodiments, csi-im features are used by the eu to perform interference measurements. the service cell determines a hop pattern for varying a position of the csi-im resources determined in subframes transmitted to the served eu. The determined csi-im resources and the determined csi-im resource jump pattern are passed to the served eu. the service node transmits a zero power (zp) csi-rs. the service node receives an interference measurement from the served eu based on the csi-im and zp csi-rs provided to the served eu from the service cell. Collisions between service node csi-im and non-service node csi-im are minimized by the determined csi-im resource leap pattern.
公开号:BR112015004036A2
申请号:R112015004036
申请日:2013-09-20
公开日:2019-10-01
发明作者:Davydov Alexei；Chatterjee Debdeep；Morozov Gregory；Bolotin Ilya；Han Seunghee
申请人:Intel Corp；
IPC主号:

专利说明:

Invention Patent Descriptive Report for METHOD TO PROVIDE IMPROVED INTERFERENCE MEASUREMENTS FOR RETRO-FEEDING CHANNEL STATE INFORMATION, SERVICE CELL, AND USER EQUIPMENT.
[001] This application claims the priority benefit of Patent Application No. ^Q series 14 / 027.401, filed on 16.09. 2013 and claims priority benefit to Provisional Patent Application No. ^Q series US 61 / 707,784, deposited on September 28, 2012, all of which are incorporated herein by reference in their entirety. BACKGROUND [002] Multi-point coordinate transmission / reception (CoMP) has been proposed as a promising technology to meet the requirements of LTE-Advanced (LTE-A) 3GPP (Third Generation Partnership Project) improving the performance of UEs from cell boundary. In CoMP operation, multiple transmit / receive points (typically geographically separate, but could also be colocalized) transmit to or receive from one or more user equipment (UEs) in cooperation to improve performance, especially the performance of the UEs at the limit of the cell. In the case of downlink CoMP, each transmission point, which may have one or more transmission antennas, is a radio unit whose signal covers a geographical area. In general, CoMP techniques refer to a wide range of coordination mechanisms, including avoiding interference. CoMP can be used to improve yield for UEs at the cell boundary as well as overall cell yield.
[003] In LTE, CRSs can be used by UEs to measure the properties of the radio channel in relation to such CSI parameters as a Channel Quality Indicator, CQI. The reference signs
2/39 CSI (CSI-RS) can also be used by terminals to acquire channel status information. CSI-RS have a significantly lower frequency / time density, thus implying less overhead compared to CRS. In CoMP systems, the channel measurement for CSI feedback is based on CSIRS.
[004] For CSI feedback purposes, interference can be measured in CRS after subtracting the channel information from the received channels or directly in the channel state information interference measurement (CSI-IM) resources indicated by the network. In CoMP systems, interference measurements for CSI are based on CSI-IM due to their flexibility in measuring support for different interference scenarios. However, interference measurement with the use of CSI-IM, in some cases, may be less accurate than the reference signal with specificity for cell interference measurements (CRS). The least accurate interference measurements on CSI-IM result from the use of the zero power channel status information reference elements (REs) (ZP CSI-RS), which, in the case of overlap with another CSI -IM configured in another cell, it may not pick up interference from some of the transmission points.
[005] In contrast, measurements based on CRS in the same cases can include interference contribution from transmission points even when CRS overlaps. This indicates that for a high load scenario, CRS-based interference measurements may be more accurate than CSI-IM interference measurements mainly due to the smaller number of CSI-IM configurations than CRS strings.
[006] For CSI-IM interference measurements, the network tells a UE which resource elements (ie subcarrier and symbols) the
3/39
EU should use to perform interference measurements. The service cell (node) may not transmit any data on a given resource element to remove interference from the cell itself, which can be achieved by configuring ZP CSI-RSs on the same resource elements. The other nodes will transmit data on specific resource elements. Therefore, the UE measures interference from the other nodes, for example, coordinating or nearby cells. Similar CSI-IM measurements and configurations can be applied to nearby nodes. However, due to the limited number of configurations available, collisions between CSI-IM from different nodes will occur. Therefore, the interference of the same nodes will not be estimated due to collisions. This leads to an underestimation of the interference to CSI feedback.
BRIEF DESCRIPTION OF THE DRAWINGS [007] Figure 1 illustrates a wireless telecommunications network according to one modality;
[008] Figure 2 illustrates a frame structure according to a modality;
[009] Figure 3 illustrates the use of a current CSI-IM resource configuration;
[0010] Figure 4 illustrates the use of a CSI-IM resource configuration according to a modality;
[0011] Figure 5 illustrates CSI-IM jump in a time domain according to a modality;
[0012] Figure 6 shows a grouping of CSI-IM according to a modality;
[0013] Figure 7 illustrates a simple case of CSI-IM jump in a time domain according to a modality;
[0014] Figure 8 illustrates the use of more than one extension of CSI-IM configuration according to one modality;
4/39 [0015] Figure 9 shows a table of parameters for subframe configuration from CSI-RS to CSI-IM according to a modality;
[0016] Figure 10 is a flowchart of a method for providing improved interference measurements for CSI feedback according to a modality;
[0017] Figure 11 illustrates an extended CSI-IM configuration according to a modality;
[0018] Figure 12 illustrates a block diagram of an example machine to provide enhanced interference measurements with CSI feedback according to a modality; and [0019] Figure 13 illustrates a node according to a modality. DETAILED DESCRIPTION [0020] The following description and drawings sufficiently illustrate the specific modalities to enable those skilled in the art to practice them. Other modalities may incorporate structural, logical, electrical, process and other changes. The portions and attributes of some modalities can be included in or replaced with those of other modalities. The embodiments presented in the claims include available equivalents of those claims.
[0021] The modalities provide improved interference measurements for CSI feedback. CSI-IM features are used by the UE to perform interference measurements. According to one embodiment, the CSI-IM jump and / or an increase in a number of CSI-IM resources can be used to provide enhanced interference measurements for CSI feedback.
[0022] Figure 1 illustrates a wireless telecommunications network 100 according to one modality. The illustrative telecommunications network includes eNBs 110, 120 and 130. A telecommunications network can
5/39 includes many more eNBs. Each of the eNBs 110, 120 and 130 is operable over corresponding coverage areas or cells 112, 122 and 132. Each coverage area of the base station 112, 122 and 132 can be further divided into three sectors, for example, sectors 140, 142, 144, 150, 152, 154, and 160, 162, 164, respectively. In some cases, each eNB sector can also be seen as a cell. A headset or other user equipment (UE) 170 is shown in sector A 140. Sector A 140 is within coverage area 112 of eNB 110. The UE 170 transmits to and receives transmissions from eNB 110. As UE 170 moves out of Sector A 140 and into Sector B 150, UE 170 can be transferred to eNB 120.
[0023] In Figure 1, UE 170 is shown approaching a cell limit 172 and is served by service eNB 110, UE 170 receives service signal 180 from service eNB 110. As UE 170 approaches from cell limit 172, interference 182 from near eNB 120 becomes stronger. The UE 170 can be configured by eNB 110 to perform interference and channel measurements using CSI-RS and CSI-IM for CSI feedback.
[0024] Performance at cell limit 172 is particularly susceptible to interference between cells (ICI) 182. Improvements in performance at cell limit 172 according to a modality can be implemented. As illustrated above, as the UE 170 moves away from service eNB 110, the degradation in its SINR can be attributed to two factors. The signal strength of the received service signal 180 decreases and the ICI 182 increases as the UE 170 moves closer to a nearby eNB 120.
[0025] Figure 2 illustrates a radio frame structure 200 according to an embodiment. In Figure 2, the radio frame 200 has an overall length of 10 ms 214. This is then divided into a total of 20 individual intervals 210. Each subframe 212 includes two
6/39 intervals of 210 length 0.5 ms, and each interval 210 contains a number of OFDM symbols N _symbolic 220. Therefore, there are 10 subframes 212 within the frame 200. The subframe n ^Q 18 is shown expanded with reference to a subcarrier geometric axis (frequency) 216 and an OFDM symbol geometric axis (time) 218.
[0026] A resource element (RE) 230 is the smallest identifiable unit of transmission and includes a subcarrier 232 for an OFDM symbol period 234. Transmissions are programmed in larger units called resource blocks (RBs) 240 which comprise several adjacent subcarriers 232 for a period of time of 0.5 ms. Thus, the smallest dimensional unit for allocating resources in the frequency domain is a resource block (RB) 240, i.e., a group of N adjacent subcarriers _SC 232 is a resource block (RB) 240. Each subframe 212 includes Nr _B resource blocks, that is, the total number of subcarriers within the N _RB x N _sc 250 subframe.
[0027] The CSI-IM resource elements can be configured as zero-power (ZP) CSI-RS resource elements. The ZP CSI-RS can be referred to as mute CSI-RSs or mute resource elements (REs). A zero-power CSI-RS is a CSI-RS standard in which the resource elements are not used, that is, there is no signal transmitted in those resource elements. In some cases, the zero power CSI-RS is a set of REs, in which the UE may not assume any transmission. Therefore, a ZP CSI-RS has the same structure as an unmuted CSI-RS except that nothing is actually transmitted in the corresponding resource elements. A CSI-RS use of ZP must be able to create transmission holes corresponding to data transmissions in other (nearby) cells to facilitate the measurement of interference with the use of CSI-IM. Another intention of ZP's CSI-RS is to have the capacity
7/39 to create transmission holes corresponding to the actual CSI-RS transmissions in other (neighboring) cells. This makes it possible for a terminal to receive CSI-RS from nearby cells without interference from CSI-RS transmissions in its own cell. In this way, ZP CSIRSs can be used to raise the signal to interference plus noise ratio (SINR) for CSI-RS in a given cell by configuring ZP CSI-RS in interference cells so that the resource elements that otherwise cause interference are silent.
[0028] One or more CSI-IMs can be configured by the network for the purpose of interference measurements (for example, to have different interference measurements for CSIs corresponding to data suppression or data transmission from node (s) in cooperation).
[0029] Figure 3 illustrates the use of a current CSI-IM resource configuration 300. The illustration in Figure 3 is a simplified representation. However, those skilled in the art will generalize the representation of CSI-IM in accordance with the LTE specification. In Figure 3, subframes 310 that have two CSI-IMs 320, 322 are shown over time 330. CSI-IMi 320 in Figure 3 is configured by two parameters resourceConfigO 340 and subframeConfigO 342. The resourceConfigO 340 parameter defines the positions the CSI-IM resources for the CSI-ΙΜϊ 320 within a subframe. The subframeConfigO 342 defines the CSI-IM periodicity and the CSI-IM subframe deviation for the CSI-IMi 320. The CSI-IM ₂ 322 similarly includes the parameters resourceConfigl 350 and subframeConfigl 352 which may be different from resourceConfigO 340 and subframeConfigO 342 of the CSI-IMi. Over time, CSI-IMs are mapped in the subframes in a defined manner. For example, in Figure 3, each subframe shows CSI-IMi in a first position and CSI-IM ₂ in
8/39 a second position. Therefore, CSI-IM resources 320, 322 have a fixed position in subframes 310. In the case of ZP CSI-RS interference measurements, resources can be configured in REs where CSI-IM resources (CSI-IM ) and CSI-IM ₂ ) are configured for the UE to remove interference from the cell itself and to pick up interference from nearby cells.
[0030] Figure 4 is a simplified illustration of CSI-IM 400 resource configuration according to a modality. Enhanced interference measurements are provided by using CSI-IM jump and / or by increasing the number of possible CSI-IM features according to one modality. In accordance with the modality, the CSI-IM configuration for enhanced interference measurement may include an additional parameter set resourceConfigl and subframeConfigl to increase the number of CSI-IM resources and / or provide CSI-IM resource bounce over time .
[0031] Figure 4 shows subframes 410 that have two CSI-IMs 420, 422 transmitted over time 430 according to an embodiment. However, those skilled in the art will realize that the extended CSI-IM configuration with additional CSI-IM features and complex CSI-IM feature skips can be deployed. CSI-IM) 420 in Figure 4 includes two parameters {resourceConfigO 440, subframeConfigO 442} and {resourceConfigl 460, subframeConfigl 462}. However, there can be only one resourceConfig that is used with different types of subframe, for example, a resourceConfig and a plurality of subframeConfig. Similarly, CSI-IM ₂ can also include two sets of parameters. However, the modalities described in this document are not intended to be limited in this regard. In Figure 4, CSI-IM ₂ 422 is shown in the same position, that is, position 2, as shown above with reference to Figure 3. However, the second subframe 412 in Figure 4 shows CSI-IM) 420
9/39 in the second position corresponding to the additional parameters resourceConfigl 460 and subframeConfigl 462. In the same subframe, CSIIM ₂ 422 jumped to the first position. As can be seen in the subsequent subframes, CSI-IIVh 420 and CSI-IM ₂ 422 continue to jump to a different position for each subframe. In some modalities, the CSI-IM configuration can be improved with the use of an additional parameter resourceConfigl 460 or subframeConfigl 462.
[0032] As shown in Figure 4, the resource elements used by a UE to perform interference measurements will jump in the time domain. If a CSI-IM collision happens to happen in a subframe, for example, subframe 420, a collision is unlikely in the next subframe, for example, subframe 422. The position parameter, resourceConfigO 440 defines the positions of CSI-IM resources for CSI-IM1 420. SubframeConfigO 442 defines the CSI-IM periodicity and the CSI-IM subframe deviation for CSI-IM1 420. In Figure 4, resourceConfigO 440 defines a CSI-IM position in the subframe with the periodicity 10 ms. Therefore, subframe 410 is repeated again after 10 ms. The position of CSI-IM1 in subframe 412 is defined by resourceConfigO 460, which also has a 10 ms periodicity in Figure 4. The subframe displacement for CSIIM1 is defined by subframeConfigO 442 and subframeConfigl 462. Therefore, in Figure 4, the displacement of subframe is 5 ms and the resource jump from CSI-IM1 after 5 ms. a similar configuration is shown for CSI-IM2 which also provides CSI-IM jump after 5 ms.
[0033] In another modality, a CSI-IM pseudo-random jump can be implemented to avoid or reduce the likelihood of collisions. If the CSI-IM jump is enabled, the CSI-IM features within the subframe in the cells change at each time interval or subframe in a pseudo-random manner, thus preventing collisions
10/39 systematics of the CSI-IM in the nearby cells.
[0034] The CSI-IM resource jump can be limited to the grouping of CSI-IM resources which can be a subset of the ZP CSI-RS resources of configured resources. The grouping CSIIM resources can be configured by the radio resource control protocol (RRC) message. The particular CSI-IM resource of the CSI-IM cluster can be determined in accordance with the pseudo-random sequence generated with the use of seed c _in i _C , where c _in i _C can be a range index function, symbol , Physical cell ID ID and cyclic prefix type (CP). The generated pseudo-random sequence is then limited to the maximum number of CSI-IM configurations (resources) available within the configured CSI-IM resource pool.
[0035] The index of CSI-IM resources of the grouping of CSI-IM resources that can be used for measuring interference in a given interval or subframe can be determined according to:
Ã.M ⁼ CSi-M {(fih ( ^W s) + Ã.VI) ^m ° d N _(SMM } [0036] where is the CSI-IM index corresponding to the CSI-IM configured for the UE by resourceConfig, n _s is the interval or subframe number, Pcsi-im θ the grouping of CSI-IM resources, f _ih is a random value to select a CSI-IM from Pcsi-im, θ N _C si-im θ a total number CSI-IM resource pool in the configured CSI-IM resource pool.
[0037] The pseudo-random sequence jump function can be defined by jumping <3e CSI-lfê is cfesabilitarfo
[0038] where the pseudo-random sequence c (i) can be initialized
11/39 with c _in i _C at the beginning of each radio frame or set of radio frames. The function identifies a CSI-IM to randomly select from the grouping of CSI-IM resources a PCSIIM. According to one embodiment, the pseudo-random sequences can be determined from a Gold sequence of length 31. The output sequence ^{c (w)} of length ^MpN , where «= o, i, ..., m _pn - i, defined by c (n) = (x / n + N _c ) + x ₂ (n + N _c )) mod2 x / n + 31) = G (71 + 3) + ^ (71)) mod 2 x ₂ (n + 31) = (x ₂ (n + 3) + x ₂ (n + 2) + x ₂ (n + l) + x ₂ (n)) mod2 where - ^v <= ^{l6 () ()} θ _the first sequence m must be initialized with ^ (0) = 1, ^ (^) = 0, ^ = 1,2, ..., 30 & initialization of the second sequence m is denoted by 'Σ ^Λ ··· ^: · ^{: 1} [0039] To ensure 0 planning of CSI-IM resources within the multi-point coordinate transmission and reception (CoMP) group, the same hop pattern can be used by coordination cells with the use of the same value of c _in i _C · The parameter c _in i _C can be set independently to 0 UE with 0 use of RRC signaling or derived from the physical cell ID, virtual cell ID value of a the CSI-RS features configured.
[0040] Figure 5 illustrates CSI-IM jump in a 500 time domain according to a modality. In a given subframe, the actual CSIIM for interference measurements is selected by the UE from a defined Pcsi-im 510. For example, a grouping of CSI-IM resources that can be a subset of ZP's CSI-RS resources configured. Figure 5 shows the example of jumping from CSI-IM to the most general case of a CoMP system with three base stations (BS), BS1 520, BS ₂ 522, BS ₃ 524. In subframe i 530, a grouping of resources from CSI-IM for CSI-IM resource jump to three base stations (BS), BS1 520, BS ₂ 522, BS ₃ 524, is shown.
12/39 [0041] In subframe i 530, the emulation of PDSCH 540, 544 is provided in resource elements corresponding to columns 1 and 3 of the second line 550, where columns 1 and 3 correspond to BSi 520 and BS ₃ 524 No PDSCH 542 transmission is performed on the CSI-IM resource REs as shown in the second row 550 of the second column corresponding to BS ₂ 522. In subframe i + n 532, no transmission from PDSCH to BS ₂ 522 and PDSH emulation 540, 544 for BSi 420 and BS ₃ 524 is used in line seven 552. In subframe i + 2-n 534, the CSI-RS from ZP 542 to BS ₂ 522 and the emulation of PDSH 540, 544 for BSi 520 and BS ₃₅₂₄ are used in the three line 554. for random jump CS-542 IM, IM-CSI collisions between the CoMP group BSi 520, BS _2522, BS ₃₅₂₄ and another CoMP group are reduced.
[0042] Figure 6 shows a grouping of CSI-IM 600 according to one modality. A 610 grouping of CSI-IM resources for CSI-IM jumping is provided. In Figure 6, cluster 610 includes 10 CSI-IM 620-638 for interference measurement hop. To enable the calculation of CQI for different hypotheses of interference, seven CSI-IM resources are configured, for example, 620, 622, 626, 634, 636, 638, having cells transmitting data, and resources 624, 628, 630, 632 are configured to not transmit data. To avoid the potential problems with PDSCH RE mapping, the transmission of PDSCH in the pool of CSI-IM pool 610 can be avoided by configuring the CSI-RS resources of ZP in the resource elements of the CSI-IM pool. Since PDSCH transmission is not performed on ZP CSI-RS, the developed NodeB (eNB) may need to emulate PDSCH transmission on some resource elements within the CSI-IM cluster to ensure interference measurements in the UE accordingly with the hypothesis of interference defined for the particular CSI-IM resource. Referring to CSI-IM
13/39 in the first row, the cell associated with the first column and the cell associated with the second columns transmit data, but the cell associated with the third columns does not transmit data. Therefore, the UE that measures the interference in the REs corresponding to the first row will capture the interference for the cell associated with columns 1 and the cell associated with columns 2.
[0043] Figure 7 illustrates a simpler case of CSI-IM jumping in a 700 time domain according to a modality. In Figure 7, a BS 720 is shown without CoMP support according to an embodiment. A CSI-IM 742 is skipped in time from line two 750, to line six 752, to line three 754 in subframes i 730, i + n 732. and i + 2-n 734, respectively.
[0044] Figure 8 illustrates the use of more than one configuration of CSI-IM 800 according to one modality. In Figure 8, a subframe 810 is shown with two CSI-IM resources, CSI-IM) 820, CSIIM ₂ 830. CSI-IM) 820 includes subframeConfigO 822 and resourceConfigO 824. CSI-IM ₂ 830 includes subframeConfig1-N 832 and subframeConfig 1-N 834. Therefore, a CSI-IM resource, for example, CSI-IM ₂ 830, may indicate more resource elements for interference measurements than CSI-IM).
[0045] Figures 9 show a 900 table of parameters for CSI-RS subframe configuration that are used for CSI-IM subframe configuration (subframeConfig parameter) according to a modality. For subframes configured for CSI-RS transmission, the reference signal sequence ij _ns (m) is mapped to modulation symbols with complex value ak, l (p) used as reference symbols. Therefore, the resourceConfig parameter generates the CSI-RS RE pattern within the subframe or, in other words, defines the CSI-RS pattern used within a subframe. In Figure 9, the table shows the periodicity of CSI-RS T _C si-rs 910 and the
14/39 CSI-RS ACSI-RS 920 subframe deviation for a CSI-RS 940 subframe configuration range. For example, the CSI-RS Tcsi-rs 920 periodicity is 5 subframes 912 for subframeConfig 0 to 4 of CSI-RS 942 and the subframe deviation of CSI-RS ACSI-RS 920 is 0 922. Therefore, the periodicity of CSI-RS T _C si-rs 920 can be in the range of T = 5 to 80 subframes. The deviation can be in the range of 0 to 79 subframes. Thus, a CSI-IM resource configuration can include resourceConfigO, subframeConfigO. The CSI-IM resource configuration can also include resourceConfigl and subframeConfig 1.
[0046] Figure 10 is a flow chart 1000 of a method to provide improved interference measurements for CSI feedback according to a modality. In Figure 10, the CSI-IM resources are determined to perform interference measurements 1010. A jump pattern is determined by varying a position of the CSI-IM resources determined in subframes 1020. The determined CSI-IM resources and the jump pattern of determined CSIIM resources are provided to the other nodes and a UE 1030. A service node can configure a zero power CSI-RS (ZP) according to the determined CSI-IM resources and the jump pattern of CSI-IM resources determined 1040. An interference measurement is performed by the UE based on the CSI-IM received by the UE and the ZIR CSIRS. Feedback from channel state information is provided to the service node based on interference measurements 1060. Collisions between the CSI-IM of the service node and the CSI-IM of other nodes are minimized by the resource jump pattern of CSI-IM determined 1070.
[0047] Figure 11 illustrates an 1100 extended CSI-IM configuration according to a modality. In Figure 11, a table 1110 is shown including 10 subframes 1120. A CSI-IM feature with
15/39 shown within a subset of subframes 1120 can be used to derive the interference measurement. In accordance with the LTE-A specification, CSI-IM is defined by two parameters, that is, subframeConfig and resourceConfig, which describe the set of downlink subframes and resource elements respectively, in which the CSI-IM is transmitted .
[0048] The extended CSI-IM configuration 1100, according to one modality, includes subframe 0 1130 which includes a subframeConfigO parameter 1132 to describe a set of downlink subframes for a first interference measurement. Subframe 4 1140 includes a subframeConfig parameter 1 1142 to describe a set of downlink subframes for a second interference measurement.
[0049] According to 3GPP Version 11, a CSI-IM configuration is a subset of resource elements configured as zero-power CSI-RS. From a practical point of view, it is preferable to support interference measurements for systems with dynamic configuration from DL to UL using a single CSI process. However, with a single CSI process, a CSI-IM configuration can be supported by the UE. In this case, CSI-IM resource transmissions that reside in different types of downlink subframes, for example, flexible 1150 and non-flexible, may not be possible. This is due to the CSI-IM periodicity of a multiple of 5 ms.
[0050] The extended CSI-IM configuration 1100 according to a modality provides an extended CSI-IM configuration that includes the subframeConfig 1 parameter 1142. Independent interference measurements for flexible 1150 and non-flexible subframes can thus be achieved using sets of subframes.
[0051] Figure 12 illustrates a block diagram of a machine
16/39 example 1200 to provide enhanced interference measurements with CSI feedback according to a modality, whereby any one or more of the techniques (for example, methodologies) discussed in this document can be performed. In alternative modes, machine 1200 can operate as a stand-alone device or can be connected (for example, networked) to other machines. In a networked arrangement, machine 1200 can operate at the capacity of a server machine and / or a client machine in server and client network environments. In one example, machine 1200 can act as an even machine in a peer-to-peer (P2P) network environment (or other distribution). The 1200 machine can be a personal computer (PC), a tablet PC, an adapter box (STB), a Personal Digital Assistant (PDA), a mobile phone, a web device, a network router, switch or bridge , or any machine that can execute instructions (sequential or otherwise) that specify the actions to be taken by that machine. In addition, although a single machine is illustrated, the term machine must also be understood to include any collection of machines that individually or together execute a set (or multiple sets) of instructions to carry out any one or more of the methodologies discussed in the present document, such as cloud computing, software as a service (SaaS), other computer group configurations.
[0052] Examples, as described in this document, may include, or may operate on, logic or various components, modules or mechanisms. Modules are tangible entities (for example, hardware) that can perform specific operations and can be configured or arranged in a certain way. In one example, circuits can be arranged (for example, internally or in relation to external entities, like other circuits) in a way
17/39 r specified as a module. In one example, at least a part of one or more computer systems (for example, a server, client, or stand-alone computer system) or one or more 1202 hardware processors can be configured by firmware or software (for example, instructions, an application portion or an application) as a module that operates to perform specified operations. In one example, the software can reside on at least one machine-readable medium. In one example, the software, when run by the module's underlying hardware, causes the hardware to perform the specified operations.
[0053] In this way, the term module is understood to include a tangible entity, whether it is an entity that is physically built, specifically configured (for example, connected by hardware) or configured (for example, programmed) temporarily (for example, temporarily) to operate in a specified manner or to perform at least part of any operation described in this document. Considering the examples in which the modules are temporarily configured, a module does not need to be instantiated at any time in time. For example, in cases where the modules comprise a 1202 general purpose hardware processor configured using software; the general purpose hardware processor can be configured as the respective different modules at different times. The software can thus configure a hardware processor, for example, to constitute a particular module in one instance of time and to constitute a different module in a different instance of time. The term application, or variants thereof, is used extensively in this document to include routines, program modules, programs, components, and the like, and can be deployed in a variety of system configurations, including a single processor or systems with
18/39 multiple processors, microprocessor-based electronics, single-core or multiple-core systems, combinations thereof, and the like. Therefore, the term application can be used to refer to a modality of software or hardware willing to perform at least part of any operation described in this document.
[0054] The machine (for example, computer system) 1200 may include a hardware processor 1202 (for example, a central processing unit (CPU), a graphics processing unit (GPU), a hardware processor core, or any combination thereof), a main memory 1204 and a static memory 1206, at least some of which can communicate with others via an interconnection (eg bus) 1208. Machine 1200 may also include a display unit 1210, an alphanumeric input device 1212 (for example, a keyboard), and a 1214 user interface (UI) navigation device (for example, a mouse). In one example, display unit 1210, input device 1212 and UI navigation device 1214 can be a touchscreen display. The machine 1200 may additionally include a storage device (for example, disk drive) 1216, a signal generating device 1218 (for example, a speaker), a network interface device 1220, and one or more sensors 1221, such as a global positioning system (GPS) sensor, compass, accelerometer or other sensor. Machine 1200 may include an output controller 1228, such as a serial connection (for example, universal serial bus (USB), parallel, or another wired or wireless connection (for example, infrared (IR)) to communicate or control one or more peripheral devices (for example, a printer, a card reader, etc.).
19/39 [0055] The storage device 1216 may include at least one machine-readable medium 1222 in which one or more sets of data structures or instructions 1224 (eg software) are stored that incorporate or are used by any one or more of the techniques or functions described in this document. Instructions 1224 may also reside, at least partially, in additional machine-readable memories, such as main memory 1204, static memory 1206, or inside hardware processor 1202 while executing them by machine 1200. In one example, one or any A combination of hardware processor 1202, main memory 1204, static memory 1206, or storage device 1216 may constitute machine-readable media.
[0056] Although the machine-readable medium 1222 is illustrated as a single medium, the term machine-readable medium can include a single medium or multiple media (for example, a centralized or distributed database, and / or intermediate storage of provision and associated servers) that are configured to store one or more 1224 instructions.
[0057] The term machine-readable medium may include any medium that can store, encode or carry instructions for execution by machine 1200 and that causes machine 1200 to perform any one or more of the techniques of the present disclosure, or that it can store, encode or port data structures used by or associated with instructions. Non-limiting examples of machine-readable media may include solid-state memories and optical and magnetic media. Specific examples of machine-readable media may include: non-volatile memory, such as semiconductor memory devices (eg, Electrically Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory and Apa
20/39 Electrically (EEPROM) and flash memory devices; magnetic disks, such as internal hard drives and removable disks; magneto-optical discs; and CD-ROM and DVD-ROM discs.
[0058] The instructions 1224 can also be transmitted or received by a communications network 1226 using a transmission medium through the network interface device 1220 that uses any of several transfer protocols (for example, frame retransmission, internet protocol (IP), transmission control protocol (TCP), user datagram protocol (UDP), hypertext transfer protocol (HTTP), etc.). Sample communication networks can include a local area network (LAN), a wide area network (WAN), a packet data network (for example, the Internet), mobile phone networks ((for example, methods channel access including Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), and Orthogonal Frequency Division Multiple Access (OFDMA) and cellular networks, such as Global System for Mobile Communications (GSM), Universal System of Mobile Telecommunications (UMTS), CDMA 2000 1x * standards and Long Term Evolution (LTE)), family of Old Flat Telephone networks (POTS) and data networks without wire (for example, Institute of Electrical and Electronic Engineers (IEEE) 802 standards including IEEE 802.11 (WiFi) standards, IEEE 802.16 standards (WiMax®) and others), peer-to-peer (P2P) networks, or other protocols now known or developed later.
[0059] For example, the 1220 network interface device may include one or more physical connectors (for example, Ethernet, coax, or telephone connectors) or one or more antennas for connection to the 1226 communications network. In one example, the network interface device 1220 may include a plurality of antennas for communicating
21/39 wirelessly using at least one of the techniques of single input and multiple outputs (SIMO), multiple inputs and multiple outputs (MIMO) or multiple inputs and single output (MISO). The term transmission medium should be understood to include any intangible medium that can store, encode or carry instructions for execution by the 1200 machine, and includes digital and analog communications signals or other intangible medium to facilitate the communication of such software.
[0060] Figure 13 illustrates a 1300 node according to one modality. In Figure 13, a processor 1310 is coupled to a transceiver 1320 and a memory 1330. Communication signals are irradiated and intercepted by means of an antenna 1340. Transceiver 1320 processes the signals for transmission or received signals. The 1330 memory can be used to store data, including a cluster of ZP 1332 CSI-RS interference measurement capabilities.
[0061] Processor 1310 determines CSI-IM resources for use by user equipment (UE) served by the node to perform interference measurements for CSI. The processor determines a jump pattern to vary a position of the CSI-IM resources determined in subframes transmitted to the served UE. The determined CSI-IM resources and the determined CSI-IM resource jump pattern are provided to the 1320 transceiver for transmission to the nodes and the UE. Zero power CSI-RS (ZP) according to the determined CSI-IM resources and the jump pattern of determined CSI-IM resources are provided to the transceiver for transmission to the served UE. An interference measurement received from the UE served based on the CSI-IM received by the UE served and the CSI-RS from ZP supplied to the UE served is processed by the 1310 processor. Collisions between the CSI-IM transmitted by the 1320 transceiver and the CSI- IM of the nearby nodes are minimized by the pattern of hopping resources
22/39
CSI-IM determined. The 1310 processor is also willing to generate pseudo-random numbers and to define a position value of the CSI-IM resources to cause the position of the CSI-IM resources in the subframes to vary in the time domain with the use of the pseudo-random numbers . The 1310 processor also selects a subframe periodicity and an offset for subframes. The hop pattern is defined by at least two parameters of CSI-RS resourceConfig and the periodicity and deviation are defined by at least two parameters of CSI-RS subframeConfig. The 1310 processor can also determine a jump pattern that is defined according to j 5 if CS! 4M jump is disabled fs, (K) = ^ 'X- » ⁷ _M í ....
H / . LA AJO '-' if CSHtá jump is habitual [0062] where ή _Η θ is a random value to select CSI-IM from a group of CSI-IM resources, Pcsi-iM, (n _s ), in that n _s is an identifier of a range or subframe, N _C si-im θ a number of CSI-IM resources in the grouping of configured CSI-IM resources and c (/) is a pseudo-random sequence.
ADDITIONAL OBSERVATIONS AND EXAMPLES [0063] Example 1 may include the subject (such as a method or means for carrying out the acts) including determining, by a service cell, CSI-IM resources for use by a user equipment (EU) used to perform interference measurements, transmit the CSI-IM resources determined to the UE served with the use of RRC signaling, transmit, by the service cell, a zero-power CSI-RS (ZP) according to the CSI resources -IM determined using RRC signaling to remove interference from the service cell and receive, by the service cell, CSI feedback corresponding to the interference measurements performed by the served UE
23/39 with the use of CSI-IM received by the UE served from the service cell and the ZP CSI-RS transmitted to the UE served from the service cell.
[0064] Example 2 can optionally include the material of Example 1, including, also, generating, by a service cell, pseudo-random numbers and defining, by the service cell, a position value of the CSI-IM resource to make that the position of CSI-IM resources in subframes varies over a time domain with the use of pseudo-random numbers.
[0065] Example 3 may optionally include the subject matter of any one or more of Examples 1 and 2, further comprising providing the service cell with a plurality of CSI-IM resources in a subframe, in which to determine , by the service cell, the CSI-IM resources for supply in subframes also comprise, by the service cell, selecting a subframe periodicity and a deviation for the subframes.
[0066] Example 4 can optionally include the material of any one or more of Examples 1 to 3, further comprising determining, by the service cell, a jump pattern to vary a position of the CSI-IM resources determined in subframes transmitted to a UE served with the use of at least two CSI-RS resourceConfig messages, transmit the hop pattern of CSI-IM resources determined to the UE served with the use of RRC signaling, in which to determine the hop pattern comprises selecting a jump pattern to minimize collisions of CSI-IM resources from different nodes and where selecting a subframe periodicity and deviation for subframes also comprises defining periodicity and deviation with the use of at least two CSI-RS subframeConfig messages.
[0067] Example 5 can optionally include the subject of which
24/39 or one or more of Examples 1 to 4, in which determining the hop pattern by the service cell further comprises defining a pseudo-random sequence jump function according to:
leaps from CSH & i to be aysabilisat
| cs -a * s & s relief from CS! is habüilatfe [0068] where f _ih is a random value to select the CSI-IM from a set of configured CSI-IM resources, PCSI-IM, (ns) is an identifier of a subframe, NCSI-IM is a number of CSI-IM resources in the grouping of configured CSI-IM resources and c (/) is a pseudo-random sequence generated from a Gold sequence of length 31.
[0069] Example 6 may optionally include the subject matter of any one or Examples 1 to 5, in which to determine, by the service cell, CSI-IM resources for use by user equipment (UE) to perform measurements interference also includes determining a plurality of subframe configurations and a resource configuration that resides in different types of subframe, where a first subframe configuration and a resource configuration reside in a first type of subframe and a second configuration of subframe resides in a second type of subframe.
[0070] Example 7 can optionally include the subject of any one or Examples 1 to 6, in which the service cell determines CSI-IM resources for use by user equipment (UE) to perform measurements of interference further comprises determining a first set of subframes comprising a first subframe configuration and a first resource configuration and determining a second set of subframes comprising a second subframe configuration, wherein the first set of subframes and the second set of subframes are arranged to provide independent interference measurements for
25/39 flexible and non-flexible subframes.
[0071] Example 8 can include material (such as a method or means for performing acts) which includes receiving, on user equipment (UE), CSI-IM resources from a service cell for use by a UE to perform interference measurements at nodes that include the service cell, receive a zero power CSI-RS (ZP) from the service cell to remove interference from the service cell, make interference measurements based on the CSI-IM and ZP CSI-RS received and provide feedback of channel status information to the service cell based on interference measurements.
[0072] Example 9 can optionally include the subject of Example 8, in which receiving CSI-IM resources from a service cell further comprises receiving CSI-IM resources that include at least two sets of parameters which comprise {resourceConfigO, subframeConfigO} and {subframeConfigl}.
[0073] Example 10 can optionally include the subject of any one or of Examples 8 and 9, including, furthermore, understanding receiving a CSI-IM resource hop pattern that includes receiving at least two CSI-RS resourceConfig messages that define the hop pattern and receive at least two subframeConfig messages that define the periodicity and subframe deviation.
[0074] Example 11 can optionally include the subject of any one or Examples 8 to 10, in which receiving the jump pattern of CSI-IM resources further comprises receiving a jump pattern defined in accordance with:
[0 CSMM s and s Wef des abSitade * '0 y *, 0'2'A cs-sá if CSI-IM leap is feab-ilitado'' ^Λ 5 [0075] where f _ih is a value to select the CSI-IM from a cluster of configured CSI-IM resources, PCSI-IM, (ns) is
26/39 a subframe identifier, NCSI-IM is a number of CSI-IM resources in the set of configured CSI-IM resources and c (/) is a pseudo-random sequence generated from a Gold sequence of length 31.
[0076] Example 12 can optionally include the subject of any one or of Examples 8 to 11, in which the UE receives resources from CSI-IM and the CSI-RS from ZP from the service node in subframes comprises, also, receive CSI-IM resources and the ZP CSI-RS according to a subframe periodicity and a deviation for the subframes defined by the service cell and provided in the CSI-IM resources received from the service cell.
[0077] Example 13 can optionally include the subject matter of any one or of Examples 8 to 12, in which to receive, on user equipment (UE), CSI-IM resources from a service cell for use by a UE to perform interference measurements at nodes that include the service cell further comprises receiving a plurality of subframe configurations and a resource configuration that reside in different types of subframe, in which a first subframe configuration and a first resource configuration they reside in a first type of subframe and a second configuration of subframe resides in a second type of subframe.
[0078] Example 14 can optionally include the subject matter of any one or Examples 8 to 13, in which to receive, in the user equipment (UE), CSI-IM resources from a service cell for use by a UE to perform interference measurements at nodes that include the service cell further comprises receiving a first set of subframes comprising a first subframe configuration and a first resource configuration and receiving a second set of subframes comprising a second configuration subframe, where the first set of subquality
27/39 dros and the second set of subframes are arranged to provide independent interference measurements for flexible and non-flexible subframes.
[0079] Example 15 can optionally include the material of any one or of Examples 8 to 14, in which making interference measurements based on the received CSI-IM resources further comprises processing the first set of subframes and the second set of subframes and perform interference measurements based on the first set of subframes and the second set of processed subframes.
[0080] Example 16 can optionally include the subject matter of any one or of Examples 8 to 15, in which it receives, in the user equipment (UE), CSI-IM resources from a service cell for use by a UE to perform interference measurements at nodes that include the service cell, it also comprises receiving at least two sets of parameters, in which the at least two sets of parameters reside in different types of subframes, in which a first subframe configuration and configuration resource resides in a first type of subframe and a second configuration of subframe and resource configuration resides in a second type of subframe, in which making interference measurements based on the received CSI-IM resources also comprises performing interference measurements based on at least two sets of processed parameters that reside in different types of subframes. [0081] Example 17 may optionally include the subject matter of either or Examples 8 to 16, in which it further comprises processing a first of at least two sets of parameters comprising a first subframe configuration and resource configuration and one second among at least two sets of parameters that comprise a second configuration
28/39 of subframe and resource configuration, where making interference measurements based on the received CSI-IM resources also comprises providing independent interference measurements for flexible and non-flexible subframes based on the first set of subframes and the second set of subframes.
[0082] Example 18 includes the material (such as a device, device, client or system) for a service node, including memory to store data in it, a processor, coupled to memory, to process signals associated with communications, including memory data, a transceiver, coupled to the processor, arranged to transmit and receive signals associated with communications and at least one antenna to radiate signals for transmission and intercept signals for reception, in which the processor is also willing to determine CSI resources -IM for use by served user equipment (UE) served by the service cell to perform interference measurements, provide the assigned CSI-IM capabilities to the transceiver for transmission to the served UE, provide, to the transceiver for transmission to the served UE, a zero power CSI-RS (ZP) according to the CSI-IM capabilities determined to remove service cell interference and proc an interference measurement received from the served UE based on the CSI-IM received by the served UE and the CSI-RS of ZP provided to the served UE from the service cell.
[0083] Example 19 can optionally include the subject matter of Examples 16 to 18, in which the processor is also willing to generate pseudo-random numbers and to define a position value of the CSI-IM resources to make the position of the CSIIM resources in the subframes vary in the time domain using pseudo-random numbers.
[0084] Example 20 can optionally include the subject matter
29/39 any one of Examples 18 to 19, in which the processor also selects a subframe periodicity and a deviation for the subframes, in which the processor is also arranged to determine a jump pattern to vary a position of the CSI-IM resources determined in the subframes transmitted to a UE served and to provide the determined CSI-IM resources and the jump pattern of CSI-IM resources determined to the transceiver for transmission to the UE served using the periodicity and the selected deviations, in which collisions between the CSI-IM transmitted by the transceiver and CSI-IM from nearby nodes are minimized by the determined hop pattern.
[0085] Example 21 can optionally include the material of any one or of Examples 18 to 20, in which the processor is further arranged to determine a jump pattern defined according to:
be safe from CSHM be challenged
med Ncss. & r output of CS1-IMM ester [0086] where / _h θ is a random value to select the CSI-IM from a group of configured CSI-IM resources, PCSI-IM, (ns) is an identifier of a subframe, NCSI-IM is a number of CSI-IM resources in the grouping of configured CSI-IM resources and c (i) is a pseudo-random sequence generated from a Gold sequence of length 31.
[0087] Example 22 may optionally include the subject matter of either or Examples 18 to 21, in which the processor is furthermore disposed to determine CSI-IM resources by determining at least two sets of parameters comprising {resourceConfigO , subframeConfigO} and {subframeConfigl}, where the two sets of parameters reside in different types of subframes, where a first subframe configuration and a first resource configuration reside in a first type of subframe and a
Second subframe configuration resides in a second type of subframe.
[0088] Example 23 can optionally include the material of either or Examples 18 to 22, wherein the processor is further arranged to provide independent interference measurements for flexible or non-flexible subframes based on at least two sets of parameters that reside in different types of subframes.
[0089] Example 24 includes matter (such as a device, device, client or system) for user equipment, including a processor to process signals associated with communications, a transceiver, coupled to the processor, willing to transmit and receive signals associated with communications and in which the processor is also willing to receive, from the transceiver, CSI-IM resources from a service cell with the use of radio resource control signaling, to process CSI resources -IM received to perform interference measurements on nodes that include the service cell, process a zero-power CSI-RS (ZP) received on the transceiver from the service node to remove service cell interference, perform interference measurements associated with nodes that include the service cell based on the CSI-IM resource received on the transceiver from the service cell and provide feedback channel status information to the service cell based on interference measurements.
[0090] Example 25 can optionally include the material of Example 24, in which the processor is also arranged to receive CSI-IM and the CSI-RS of ZP from the service cell in the subframes according to a periodicity of subframe and a deviation for subframes defined by the service cell and provided in the CSI-IM resources received from the service cell.
31/39 [0091] Example 26 may optionally include the subject matter of any one or Examples 24 to 25, in which the processor is further arranged to process a CSIIM resource skip pattern received at the transceiver from a service cell to vary a position of the CSI-IM resources in subframes and to receive CSI-IM and the ZP CSI-RS from the service cell in positions in subframes according to the CSI- resource jump pattern IM received.
[0092] Example 27 can optionally include the material of any one or of Examples 24 to 26, in which the hop pattern is defined according to:
if CSi-K saSs stimulated uninhabited ms d N sg _s 4 _and CSÍ- »has been [0093] where / j _h θ is a random value to select the CSI-IM from a group of configured CSI-IM resources, PCSI-IM, (ns) is an identifier of a subframe, NCSI-IM is a number of CSI-IM resources in the grouping of configured CSI-IM resources and c (i) is a pseudo-random sequence generated from a Gold sequence in length 31.
[0094] Example 28 can optionally include the subject matter of any one or Examples 24 to 27, in which receiving CSI-IM resources from a service cell further comprises receiving CSI-IM resources which include at least two sets of parameters comprising {resourceConfigO, subframeConfigO} and {subframeConfigl} and in which the processor is also willing to process at least two sets of parameters, in which the processor is also willing to perform associated interference measurements to nodes that include the service cell based on at least two sets of parameters.
[0095] Example 29 can optionally include the subject matter
32/39 any one of Examples 24 to 28, where the at least two sets of parameters reside in different types of subframes, where a first subframe configuration and resource configuration reside in a first subframe type and a second configuration subframe resides in a second type of subframe, in which the processor is also arranged to perform interference measurements based on at least two sets of processed parameters that reside in different types of subframe.
[0096] Example 30 may optionally include the subject matter of either or Examples 24 to 29, wherein the at least two sets of parameters are arranged to provide independent interference measurements for flexible and non-flexible subframes.
[0097] Example 31 may include matter (such as means for performing acts or machine-readable means including instructions that, when executed by the machine, cause the machine to perform acts) including determining, by a service cell, resources for CSIIM for use by a user equipment (UE) served to perform interference measurements, transmit the CSI-IM resources determined to the UE served with the use of RRC signaling, transmit, through the service cell, a power CSI-RS zero (ZP) according to the CSI-IM features determined using RRC signaling to remove service cell interference and receive, by the service cell, CSI feedback corresponding to the interference measurements performed by the UE served with the use of CSI-IM received by the UE served from the service cell and the CSI-RS of ZP transmitted to the UE served from the service cell.
[0098] Example 32 can optionally include the material of Example 31, including, also, generating, by a service cell, pseudo-random numbers and defining, by the service cell, a position value of the CSI-IM resource for make the position of the resources
33/39 of CSI-IM in subframes vary over a time domain using pseudo-random numbers.
[0099] Example 33 can optionally include the material of any one or of Examples 31 and 32, further comprising providing, by the service cell, a plurality of CSI-IM resources in a subframe, in which to determine, by the cell In terms of service, the CSI-IM resources for supply in subframes also include selecting a subframe periodicity and deviation for the subframes by the service cell.
[00100] Example 34 may optionally include the material of any one or more of Examples 31 to 33, further comprising determining, by the service cell, a jump pattern to vary a position of the CSI-IM resources determined in subframes transmitted to a UE served with the use of at least two CSI-RS resourceConfig messages, transmit the hop pattern of CSI-IM resources determined to the UE served with the use of RRC signaling, in which to determine the hop pattern comprises selecting a jump pattern to minimize collisions of CSI-IM resources from different nodes and where selecting a subframe periodicity and deviation for subframes also comprises defining periodicity and deviation with the use of at least two CSI-RS subframeConfig messages.
[00101] Example 35 can optionally include the material of any one or of Examples 31 to 34, in which determining, by the service cell, the jump pattern further comprises defining a pseudo-random sequence jump function according to:
if CSHfel saKo is disabled paed Neg.Qjj _se . _S3 fl .; ₀ csi-ϊΜ estiw habifitarfe · [00102] where θ is a random value to select the CSI-IM from a group of configured CSI-IM resources, PCSI-IM, (ns) is
34/39 a subframe identifier, NCSI-IM is a number of CSI-IM resources in the group of configured CSI-IM resources and c (i) is a pseudo-random sequence generated from a Gold sequence of length 31.
[00103] Example 36 may optionally include the subject matter of any one or Examples 31 to 35, in which determining, by the service cell, CSI-IM resources for use by a UE to perform interference measurements also includes , determine a plurality of subframe configurations and a resource configuration that reside in different types of subframe, where a first subframe configuration and a first resource configuration reside in a first type of subframe and a second configuration of subframe resides in a second type of subframe.
[00104] Example 37 can optionally include the material of any one or of Examples 31 to 36, in which to determine, by the service cell, CSI-IM resources for use by a user equipment (UE) to perform interference measurements further comprises determining a first set of subframes comprising a first subframe configuration and a first resource configuration and determining a second set of subframes comprising a second subframe configuration, wherein the first set of subframes and the second set of subframes are arranged to provide independent interference measurements for flexible and non-flexible subframes.
[00105] Example 38 can include material (such as means to perform acts or machine-readable means including instructions that, when executed by the machine, cause the machine to perform acts) which includes receiving, on user equipment (UE ), CSI-IM resources from a service cell for use by a UE to perform interference measurements at nodes that include the
35/39 service, receive a zero-power CSI-RS (ZP) from the service cell to remove interference from the service cell, make interference measurements based on CSI-IM capabilities and ZP CSI-RS received and provide feedback of channel status information to the service cell based on interference measurements.
[00106] Example 39 can optionally include the subject of Example 38, in which receiving CSI-IM resources from a service cell further comprises receiving CSI-IM resources which include at least two sets of parameters comprising {resourceConfigO, subframeConfigO} and {subframeConfigl}.
[00107] Example 40 can optionally include the subject of any one or Examples 38 and 39, including, furthermore, understanding receiving a CSI-IM resource hop pattern that includes receiving at least two CSI-RS resourceConfig messages that define the hop pattern and receive at least two subframeConfig messages that define the periodicity and subframe deviation.
[00108] Example 41 can optionally include the material of any one or of Examples 38 to 40, in which receiving the jump pattern of CSI-IM resources further comprises receiving a jump pattern defined according to:
if CSI-O salts are -unabled i st ·>: if- CSI-IM output is enabled [00109] where f _ih is a random value to select the CSI-IM from a group of configured CSI-IM resources , PCSI-IM, (ns) is an identifier of a subframe, NCSI-IM is a number of CSI-IM resources in the grouping of configured CSI-IM resources and c (i) is a pseudo-random sequence generated from a sequence Gold length 31.
[00110] Example 42 may optionally include the material of any one or of Examples 38 to 41, in which the UE will receive re
36/39 courses of CSI-IM and the CSI-RS of ZP from the service node in subframes also comprises receiving resources from CSI-IM and the CSIRS of ZP according to a sub-frame frequency and a deviation for the subframes defined by the service cell and provided in the CSI-IM resources received from the service cell.
[00111] Example 43 can optionally include the subject matter of any one or Examples 38 to 42, in which it receives, on user equipment (UE), CSI-IM resources from a service cell for use by a UE to perform interference measurements at nodes that include the service cell further comprises receiving a plurality of subframe configurations and a resource configuration that reside in different types of subframe, in which a first subframe configuration and a first resource configuration they reside in a first type of subframe and a second configuration of subframe resides in a second type of subframe.
[00112] Example 44 may optionally include the subject matter of any of Examples 38 to 43, in which it receives, on user equipment (UE), CSI-IM resources from a service cell for use by a UE to perform interference measurements at nodes that include the service cell further comprises receiving a first set of subframes comprising a first subframe configuration and a first resource configuration and receiving a second set of subframes comprising a second configuration of subframe, where the first set of subframes and the second set of subframes are arranged to provide independent interference measurements for flexible and non-flexible subframes.
[00113] Example 45 may optionally include the subject matter of either or Examples 38 to 44, in which making interference measurements based on the received CSI-IM resources comprises,
37/39 also, process the first set of subframes and the second set of subframes and perform interference measurements based on the first set of subframes and the second set of processed subframes.
[00114] Example 46 may optionally include the subject matter of any one or Examples 38 to 45, in which it receives, on user equipment (UE), CSI-IM resources from a service cell for use by a UE to perform interference measurements at nodes that include the service cell, it also comprises receiving at least two sets of parameters, in which the at least two sets of parameters reside in different types of subframes, in which a first subframe configuration and configuration resource resides in a first type of subframe and a second configuration of subframe and resource configuration resides in a second type of subframe, in which making interference measurements based on the received CSI-IM resources also comprises performing interference measurements based on at least two sets of processed parameters that reside in different types of subframes.
[00115] Example 47 can optionally include the subject matter of either or Examples 38 to 46, in which it further comprises processing a first of at least two sets of parameters comprising a first subframe configuration and resource configuration and one second among at least two sets of parameters that comprise a second subframe configuration and resource configuration, in which making interference measurements based on the received CSI-IM resources also comprises providing independent interference measurements for flexible subframes and not flexible based on the first set of subframes and the second set of subframes.
38/39 [00116] The detailed description above includes references to the accompanying drawings, which form part of the detailed description. The drawings show, by way of illustration, the specific modalities that can be practiced. Such modalities are also referred to in this document as examples. Such examples may include elements in addition to those shown or described. However, examples are also contemplated that include the elements shown or described. In addition, examples are also contemplated that use any combination or permutation of these elements shown or described (or one or more aspects of them), or in relation to a particular example (or one or more aspects of it) or in relation to other examples (or one or more aspects thereof) shown or described in this document.
[00117] The publications, patents and patent documents referred to in this document are incorporated by reference to the present in their entirety, although incorporated individually by reference. In the case of inconsistent uses between this document and those documents so incorporated by reference, the use in the incorporated reference (s) is supplementary to that of this document; for incompatible inconsistencies, the use in this document prevails.
[00118] In this document, the terms one or one are used, as is common in patent documents, including one or more of one, regardless of any other instances or uses of at least one or one or more. In this document, the term is either used to refer to a non-exclusive or, so that A or B includes A, but not Β, B, but not A, and A and B, unless otherwise indicated. In the appended claims, the terms it includes and in which are used as the simple language equivalents of the respective terms it understands and in which. In addition,
39/39 subsequent claims, the terms it includes and which comprises are open, that is, a system, a device, an article or a process which includes elements in addition to those listed after such term in a claim is still considered to fall within the scope of that claim . In addition, in the following claims, the terms first, second and third, etc. they are used merely as indicators and are not intended to suggest a numerical order for your objects.
[00119] The description above is intended to be illustrative and not restrictive. For example, the examples described above (or one or more aspects of them) can be used in combination with others. Other modalities can be used, such as by one skilled in the art through analysis of the above description. The Summary is to allow the reader to quickly verify the nature of the technical disclosure, for example, to comply with regulation 37 C.F.R. §1.72 (b) in the United States of America. The same is presented with the understanding that it will not be used to interpret or limit the scope and meaning of the claims. In addition, in the Detailed Description above, several attributes can be grouped together to streamline the disclosure. However, the claims may not have any features revealed in this document due to the fact that the modalities may include a subset of said attributes. Furthermore, the modalities may include fewer resources than those revealed in a particular example. Therefore, the following claims are hereby incorporated into this Detailed Description, in which a claim stands on its own as a separate modality. The scope of the modalities disclosed in this document must be determined with reference to the attached claims, together with the full scope of the equivalents to which such claims are assigned.

权利要求:
Claims (25)
[1]
1. Method for providing enhanced interference measurements (IM) for feedback of channel state information (CSI) characterized by the fact that it comprises:
determine, by a service cell, CSI-IM resources for use by a user-served device (UE) to perform interference measurements;
transmit CSI-IM resources to the UE served using RRC signaling;
transmit a zero-power CSI-RS (ZP) in accordance with the CSI-IM resources determined using RRC signaling to remove interference from the service cell; and receive, through the service cell, CSI feedback that corresponds to the interference measurements performed by the UE served using the CSI-IM received by the UE served from the service cell and the ZP CSI-RS transmitted to the UE served to from the service cell.
[2]
2. Method, according to claim 1, characterized by the fact that it also comprises:
generate, through a service cell, pseudo-random numbers; and define, by the service cell, a position value of the CSI-IM resource to cause the position of the CSI-IM resources in subframes to vary over a time domain using pseudo-random numbers.
[3]
3. Method, according to claim 1, characterized by the fact that it also comprises providing, by the service cell, a plurality of CSI-IM resources in a subframe, in which to determine, by the service cell, the CSI resources -IM for hunger
2/10 cement in subframes also comprises selecting, by the service cell, a periodicity of subframes and a deviation for subframes.
[4]
4. Method, according to claim 1, characterized by the fact that it also comprises determining, by the service cell, a jump pattern to vary a position of the CSI-IM resources determined in subframes transmitted to a UE served with the use of at least two CSI-RS resourceConfig messages, transmit the hop pattern of CSI-IM resources determined to the UE served using RRC signaling, in which determining the hop pattern comprises selecting a hop pattern to minimize collisions between CSI-IM resources from different nodes, and where selecting a subframe periodicity and a deviation for the subframes also includes defining the periodicity and deviation with the use of at least two CSI-RS subframeConfig messages.
[5]
5. Method, according to claim 4, characterized by the fact that determining, by the service cell, the jump pattern also comprises defining a jump function of pseudo-random sequence in accordance with:
[δ if tte stesefeãftadB exits
·. · -S. · Y 57 _ j 4. y..2 '| d N s® ⁸ ® tíe estéer habtofo where ή _Η θ is a random value to select 0 CSI-IM from a grouping of CSI-IM resources, Pcsi-im, (n _s ) is an identifier of a subframe, N _C si-im θ a number of CSI-IM resources in the configured CSI-IM resource grouping and c (/) is a pseudo-random sequence generated from a Gold sequence of length 31.
[6]
6. Method, according to claim 1, characterized by the fact that determining, by the service cell, CSI-IM resources for use by a user equipment (UE) to perform measurements
3/10 interference also includes determining a plurality of subframe configurations and a resource configuration that resides in different types of subframe, in which a first subframe configuration and a resource configuration residing in a first type of subframe and a second configuration subframe residing in a second type of subframe.
[7]
7. Method, according to claim 1, characterized by the fact that determining, by the service cell, CSI-IM resources for use by a user equipment (UE) to perform interference measurements also comprises determining a first set of subframes comprising a first subframe configuration and a first resource configuration, and determining a second set of subframes comprising a second subframe configuration, wherein the first set of subframes and the second set of subframes are arranged to provide interference measurements independent for flexible and non-flexible subframes.
[8]
8. Method for providing enhanced interference measurements for feedback of channel state information (CSI) characterized by the fact that it comprises:
receiving, on a user device (UE), CSI-IM resources from a service cell for use by a UE to perform interference measurements on nodes that include the service cell;
receiving a zero power CSI-RS (ZP) from the service cell to remove service cell interference;
make interference measurements based on the received CSI-IM resources and the ZP CSI-RS; and providing feedback of channel status information to the service cell based on interference measurements.
[9]
9. Method, according to claim 8, characterized by the fact that receiving CSI-IM resources from a
4/10 The service also comprises receiving CSI-IM resources that include at least two sets of parameters comprising {resourceConfigO, subframeConfigO} and {subframeConfigl}.
[10]
10. Method, according to claim 8, characterized by the fact that it also comprises receiving a hop pattern of CSI-IM resources that includes receiving at least two messages from CSI-RS resourceConfig that define the hop pattern and receiving at least two subframeConfig messages that define the subframe and deviation frequency, in which receiving the CSI-IM resource hop pattern further comprises receiving a hop pattern defined in accordance with:
if sato «fe CSUíá is n®d N. si se safe 4e CS-Sst is hafesSaío where ή _Η θ is a random value to select the CSI-IM from a grouping of CSI-IM resources, Pcsi-im, (n _s ) is an identifier of a subframe, N _C si-im θ a number of CSI-IM resources in the configured CSI-IM resource grouping and c (/) is a pseudo-random sequence generated from a Gold sequence of length 31.
[11]
11. Method, according to claim 8, characterized by the fact that receiving, by the UE, resources from CSI-IM and the CSI-RS from ZP from the service node in subframes further comprises receiving resources from CSI-IM and the CSI-RS of ZP in accordance with a subframe periodicity and a deviation for the subframes defined by the service cell and provided in the CSI-IM resources received from the service cell.
[12]
12. Method, according to claim 8, characterized by the fact that receiving, in the user equipment (UE), CSI-IM resources from a service cell for use by a UE for rea
5/10 Using interference measurements at nodes that include the service cell further comprises receiving a plurality of subframe configurations and a resource configuration that reside in different types of subframe, in which a first subframe configuration and a first resource configuration reside in a first type of subframe, and a second configuration of subframe resides in a second type of subframe.
[13]
13. Method, according to claim 8, characterized by the fact that receiving, in the user equipment (UE), CSI-IM resources from a service cell for use by a UE to perform interference measurements on nodes which include the service cell further comprises receiving a first set of subframes comprising a first set of subframes and a first configuration of resource, and receiving a second set of subframes comprising a second set of subframes, wherein the first set of subframes and the second set of subframes are arranged to provide independent interference measurements for flexible and non-flexible subframes.
[14]
14. Method, according to claim 13, characterized by the fact that making interference measurements based on the received CSI-IM resources also comprises processing the first set of subframes and the second set of subframes, and performing interference measurements with based on the first set of subframes and the second set of processed subframes.
[15]
15. Method, according to claim 8, characterized by the fact that receiving, in the user equipment (UE), CSI-IM resources from a service cell for use by a UE to perform interference measurements on nodes which include the service cell further comprises receiving at least two sets of parameters, wherein the at least two sets of parameters reside in different
6/10 different types of subframes, where a first subframe configuration and resource configuration reside in a first type of subframe, and a second subframe configuration and resource configuration reside in a second type of subframe, in which to make measurements of interference based on the received CSI-IM resources also comprises performing interference measurements based on at least two sets of processed parameters that reside in different types of subframes.
[16]
16. Method, according to claim 8, characterized by the fact that it further comprises processing a first among at least two sets of parameters comprising a first subframe configuration and resource configuration, and a second among at least two sets of parameters comprising a second subframe configuration and resource configuration, where making interference measurements based on the received CSI-IM resources further comprises providing independent interference measurements for flexible and non-flexible subframes based on the first set of subframes and in the second set of subframes.
[17]
17. Service cell characterized by the fact that it comprises:
memory to store data in it;
a processor coupled to the memory to process signals associated with communications, including data from memory;
a transceiver coupled to the processor, arranged to transmit and receive signals associated with communications; and at least one antenna for propagating signals for transmission and intercepting signals for reception;
where the processor is still willing to:
determine CSI-IM resources for use by a team
7/10 served user (UE) served by the service cell to perform interference measurements;
providing specific CSI-IM resources to the transceiver for transmission to the served UE;
providing the transceiver for transmission to the UE served with a zero power CSI-RS (ZP) in accordance with the CSI-IM capabilities determined to remove service cell interference; and processing an interference measurement received from the served UE based on the CSI-IM received by the served UE and the ZP CSIRS provided to the served UE from the service cell.
[18]
18. Service cell, according to claim 17, characterized by the fact that the processor is further configured to generate pseudo-random numbers and to define a position value of the CSI-IM resources to make the position of the CSI resources -IM in the subframes vary in a time domain using the pseudo-random numbers.
[19]
19. Service cell, according to claim 17, characterized by the fact that the processor also selects a subframe periodicity and a deviation for the subframes, in which the processor is also arranged to determine a jump pattern to vary a position of the CSI-IM resources determined in the subframes transmitted to a served UE and to provide the determined CSIIM resources and the jump pattern of determined CSI-IM resources to the transceiver for transmission to the served UE using the selected periodicity and offset, in that collisions between the CSI-IM transmitted by the transceiver and CSI-IM from nearby nodes are minimized by the determined hop pattern.
[20]
20. Service cell, according to claim 19, characterized by the fact that the processor is still willing to
8/10 determine the jump pattern in accordance with:
s® sst »d® CSWFsí is dssaMatfs mod N _{if S3} g _o ; i _s cst-at: esiiver hafefetósi where fj _h θ is a random value to select the CSI-IM from a grouping of CSI-IM, Pcsi- im, (n _s ) is an identifier of a subframe, N _C si-im θ a number of CSI-IM resources in the configured CSI-IM resource grouping and c (/) is a pseudo-random sequence generated from a sequence of Gold of length 31.
[21]
21. Service cell, according to claim 17, characterized by the fact that the processor is still willing to determine CSI-IM resources by determining at least two sets of parameters comprising {resourceConfigO, subframeConfigO} and {subframeConfigl} , where the two sets of parameters reside in different types of subframes, where a first subframe configuration and a first resource configuration reside in a first type of subframe and a second configuration of subframe resides in a second type of subframe.
[22]
22. User equipment characterized by the fact that it comprises:
a processor to process signals associated with communications:
a transceiver coupled to the processor arranged to transmit and receive signals associated with communications: and in which the processor is also arranged to:
receive, from the transceiver, CSI-IM resources from a service cell using radio resource control signaling;
process the CSI-IM resources received to perform interference measurements at nodes that include a service cell;
9/10 process a zero power CSI-RS (ZP) received at the transceiver from the service node to remove service cell interference;
perform interference measurements associated with nodes that include a service cell based on the CSI-IM resource received on the transceiver from the service cell; and providing feedback of channel status information to the service cell based on interference measurements.
[23]
23. User equipment according to claim 22, characterized by the fact that the processor is further arranged to receive CSI-IM and the ZI CSI-RS from the service cell in the subframes in accordance with a subframe periodicity and an offset to the subframes defined by the service cell and provided in the CSI-IM resources received from the service cell.
[24]
24. User equipment according to claim 22, characterized by the fact that the processor is further arranged to process a CSI-IM resource jump pattern received at the transceiver from a service cell to vary a position of the CSI-IM resources in the subframes and to receive CSI-IM and the ZP CSI-RS from the service cell in positions in the subframes in accordance with the received CSI-IM resource jump pattern, and where the pattern jump is defined in accordance with:
s® ssit »of CSt-ifst is from & aitffitado mod N _if jig csi-iísí is complete & l · where ή _Η θ is a random value to select the CSI-IM from a set of configured CSI-IM resources, Pcsi-im, ( n _s ) θ an identifier of a subframe, N _C si-im θ a number of CSI-IM resources in the configured CSI-IM resource grouping and c (/) is a pseudo-random sequence generated from a sequence of
10/10
Gold length 31.
[25]
25. User equipment according to claim 24, characterized by the fact that:
receiving CSI-IM resources from a service cell further comprises receiving CSI-IM resources which include at least two sets of parameters comprising {resourceConfigO, subframeConfigO} and {subframeConfigl} and in which the processor is further arranged to process at least two sets of parameters, in which the processor is also arranged to perform interference measurements associated with nodes that include the service cell based on at least two sets of parameters;
the at least two sets of parameters reside in different types of subframes, where a first subframe configuration and resource configuration reside in a first type of subframe, and a second subframe configuration resides in a second type of subframe, where the processor is also willing to perform interference measurements based on at least two sets of parameters that reside in different types of subframes;
the at least two sets of parameters are arranged to provide independent interference measurements for flexible and non-flexible subframes.

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2018-11-21| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2020-05-26| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04B 17/00 , H04B 7/04 Ipc: H04W 72/08 (2009.01), H04W 72/12 (2009.01), H04W 2 |

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2020-06-02| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2020-08-18| B25C| Requirement related to requested transfer of rights|Owner name: INTEL CORPORATION (US) |

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2021-03-02| B25A| Requested transfer of rights approved|Owner name: APPLE INC. (US) |

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2021-10-05| B350| Update of information on the portal [chapter 15.35 patent gazette]|

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