• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    METHODS FOR REPORTING POWER MARGIN ON A USER EQUIPMENT, AND FOR PROGRAMMING A USER EQUIPMENT, USER EQUIPMENT, AND, BASE STATION. Embodiments of the present invention relate to a method in a UE for distributing available transmit power to avoid violating UE power limitations on the PUCCH and the PUSCH. Power available for transmission at least on the PUCCH is determined and at least one power margin report indicating the power available for transmission at least on the PUCCH is transmitted to a base station.
    公开号:BR112012007385B1
    申请号:R112012007385-0
    申请日:2010-09-29
    公开日:2021-05-25
    发明作者:Daniel Larsson；Robert Baldemair；Dirk Gerstenberger；Lars Lindbom
    申请人:Telefonaktiebolaget Lm Ericsson；
    IPC主号:
    专利说明:

    technical field
    [001] The present invention relates to methods and arrangements in a mobile telecommunications network, and in particular to reporting transmission power headroom in conjunction with simultaneous transmission of physical uplink shared channels and physical uplink control channels . Fundamentals
    [002] Long Term Evolution (LTE) 3GPP is a project within the 3rd Generation Partnership Project (3GPP) to improve the UMTS standard with eg increased capacity and higher data rates for fourth generation networks telecommunication devices. Consequently, LTE specifications provide downlink peak rates of up to 300 Mbps, an uplink of up to 75 Mbit/s, and radio access network round-trip times of less than 10 ms. In addition, LTE supports expandable carrier bandwidths from 20 MHz up to 1.4 MHz and supports both FDD (Frequency Division Duplexing) and TDD (Time Division Duplexing).
    [003] LTE uses OFDM (Orthogonal Frequency Division Multiplexing) in the downlink and DFT (Discrete Fourier Transform)-OFDM spread in the uplink. The basic LTE downlink physical resource can thus be seen as a time-frequency grid as illustrated in Figure 1, where each resource element corresponds to an OFDM subcarrier during an OFDM symbol interval.
    [004] In the time domain, LTE downlink transmissions are organized into 10ms radio frames, each radio frame consisting of ten equally sized subframes of length Tsubframe = 1ms as illustrated in Figure 2.
    [005] Furthermore, resource allocation in LTE is typically described in terms of resource blocks, where a resource block corresponds to a slot (0.5 ms) in the time domain and 12 contiguous subcarriers in the frequency domain. Resource blocks are numbered in the frequency domain, starting with 0 at one end of the system bandwidth.
    [006] Downlink transmissions are dynamically scheduled, that is, in each subframe the base station transmits control information about which terminals the data is transmitted and in which resource blocks the data is transmitted, in the current downlink subframe. This control signaling is typically transmitted in the first 1, 2, 3 or 4 OFDM symbols in each subframe. A downlink system with 3 OFDM symbols as control is illustrated in Figure 3.
    [007] LTE uses hybrid-ARQ, where, after receiving downlink data in a subframe, the terminal tries to decode it and reports to the base station whether the decoding was successful (ACK) or not (NAK). In case of an unsuccessful decoding attempt, the base station may retransmit the erroneous data.
    [008] Uplink control signaling from the terminal to the base station consists of ARQ-hybrid acknowledgments for received downlink data; endpoint reports relating to downlink channel conditions, used as assistance for downlink scheduling; scheduling requests, indicating that a mobile terminal needs uplink resources for uplink data transmissions.
    [009] If the mobile terminal has not been assigned an uplink resource for data transmission, L1/L2 control information (channel status reports, ARQ-hybrid acknowledgments, and scheduling requests) is transmitted on uplink resources (resource blocks) specifically assigned for uplink L1/L2 control on Physical Uplink Control Channel (PUCCH). As illustrated in Figure 4, these features are located at the edges of the cell's total available bandwidth. Each such resource consists of twelve "subcarriers" (a resource block) within each of the two slots of an uplink subframe. In order to provide frequency diversity, these frequency resources are frequency hopping at the slot boundary i.e. a "resource" consists of 12 subcarriers at the top of the spectrum within the first slot of a subframe and an equally sized resource at the bottom of the spectrum during the second subframe slot or vice versa. If more resources are needed for uplink L1/L2 control signaling, for example, in case of very large overall transmission bandwidth supporting a large number of users, additional resource blocks can be assigned next to the previously assigned resource blocks.
    [010] To transmit data on the uplink, the mobile terminal has been assigned an uplink resource for data transmission, on the Physical Uplink Shared Channel (PUSCH). In contrast to a downlink data assignment, in uplink the assignment must always be consecutive in frequency, this to retain the uplink signal carrier property as illustrated in Figure 5.
    [011] The middle symbol of SC (Single Carrier Frequency Division Multiple Access (FDMA)) (also called DFT-spread OFDM) in each slot is used to transmit a reference symbol. If the mobile terminal has been assigned an uplink resource for data transmission and at the same time has control information to transmit, it will transmit the control information along with the PUSCH data.
    [012] Uplink power control is used both in PUSCH and PUCCH. The purpose is to ensure that the mobile terminal transmits with enough power, but at the same time it is not too high, as this would only increase interference for other users on the network. In both cases, a parameterized open loop combined with a closed loop mechanism is used. Roughly speaking, the open-loop part is used to define an operating point around which the closed-loop component operates. Different parameters such as targets and partial compensation factors for control plane and user are used.
    [013] In more detail, for PUSCH, the mobile terminal defines the output power according to:

    [014] where PCMAX is the maximum transmission power configured for the mobile terminal, MPUSCH(i) is the number of assigned resource blocks, PO_PUSCH (j) and α control the target received power, PL is the estimated path loss, ΔTF( i) is transport format compensator and f(i) is a UE (User Equipment) specific offset or “closed loop correction”. The function f can represent either absolute or cumulative displacements. Closed-loop power control can be operated in two different modes either cumulative or absolute. Both modes are based on a TPC (Transmission Power Command), which is part of the downlink control signaling. When absolute power control is used, the closed-loop correction function is reset every time a new power control command is received. When accumulated power control is used, the power control command is a delta correction with respect to the previously accumulated closed-loop correction. The base station can filter mobile terminal power in both time and frequency to provide an accurate power control operating point for the mobile terminal. The accumulated power control command is defined as:
    , where δPUSCH is the TPC command received in KPUSCH subframe before current subframe i and f(i-1) is the accumulated power control value.
    [015] Accumulated power control command is reset when cell switching, entering/exiting RRC active state, an absolute TPC command is received, PO_PUCCH is received, and when the mobile terminal (res)syncs.
    [016] In the case of reset, the power control command is reset to f(0) = ΔPramup + δmsg2, where δmsg2 is the TPC command indicated in the random access response and ΔPrampup corresponds to the total power rise from the first to last random access preamble.
    [017] PUCCH power control has in principle the same configurable parameters with the exception that PUCCH only has full path loss compensation, that is, it only covers the case of α=1.
    [018] In existing LTE systems, the base station has the possibility to request a power headroom report from the UE for PUSCH transmissions. The power headroom reports inform the base station how much transmit power the UE has left for subframe i. The reported value is within the range of 40 to -23 dB, where a negative value indicates that the UE has not had enough transmit power to fully conduct the transmission of data, or control information.
    [019] UE PUSCH power headroom PH for subframe is defined as:

    [020] where
    are defined above.
    [021] In future LTE releases it will be possible to transmit PUCCH and PUSCH at the same time and transmit/receive on multiple component carriers. With the added possibility for the UE to transmit PUSCH and PUCCH at the same time, the power limiting scenario, i.e. when the UE has reached the maximum transmit power, becomes more likely.
    [022] The LG ELECTRONICS document: "Uplink Multiple Channel Transmission Under UE Transmitted Power Limitation" 3GPP Project; Ri-09i206 LTEA_UL LIMITATION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP) MOBILE COMPETENCE CENTER; 650, ROUTE DES LUCIOLES; F-0.692i SOPHIA-ANTIPOLIS CEDEZ; FRANCE, no. Seoul, Korea; 200903i7, March i7, 2009 (2009-03-i7), XP05033882i describes uplink multiple channel transmission under UE transmitted power limitation, the document discusses the case of a UE configured to transmit both under PUSCH and PUCCH simultaneously. A power headroom report is transmitted from the UE to be received by the eNB when in single-carrier transmission mode. However, the power headroom report discussed here is based on PUSCH, just as the power headroom report is on the rel. LTE 8. It is further established in the document that the power headroom report is inappropriate when transmitting both over PUSCH AND PUCCH simultaneously. summary
    [023] In order for the base station to scale PUSCH effectively, the base station needs to be aware of the UE's available transmit power. In the prior art, the base station requests a power headroom report from the UE, which indicates how much transmission power is used in the UE based on a PUSCH transmission in subframe i.
    [024] Future LTE releases will give the possibility for UE to transmit PUSCH (Physical Uplink Shared Channel) and PUCCH (Physical Uplink Control Channel) simultaneously. As both the PUCCH and the PUSCH can be transmitted simultaneously, the transmit power in the UE needs to be shared between the two channels.
    [025] It is, therefore, desired to be able to reach an improved solution to predict the available transmission power.
    [026] This is achieved by taking into account the PUCCH transmit power in a power headroom report. Consequently, the UE is required either to report an individual power headroom report for PUCCH or a combined power headroom report for PUCCH and PUSCH according to modalities. For example, the combined power headroom report can be transmitted with the individual power headroom report for the PUSCH. The individual power headroom report and the combined power headroom reports can only be valid for a component carrier, for example, for each individual component carrier, or for the sum of the component carriers.
    [027] Using the embodiments of the present invention, the base station is now able to know how much power the PUCCH will take from the total available transmission power and correspondingly, how much power is left for the staggered PUSCH transmission.
    [028] According to a first aspect of embodiments of the present invention, a method in a UE to distribute available transmission power between PUCCH and PUSCH. In the method, power available for transmission at least on the PUCCH is determined, and at least one power headroom report indicating the power available for transmission at least on the PUCCH is transmitted to a base station.
    [029] According to a second aspect of embodiments of the present invention, a method at a base station to distribute available transmit power of a UE between PUCCH and PUSCH is provided. In the method, at least one power headroom report indicating power available for transmission at least on the PUCCH is received from a UE and the UE is scaled based on information from the at least one received power headroom report.
    [030] According to a third aspect of embodiments of the present invention, a UE to distribute available transmission power between PUCCH and PUSCH is provided. The UE comprises a processor configured to determine power available for transmission at least on the PUCCH, and a transmitter configured to transmit to a base station at least one power headroom report indicating power available for transmission on at least the PUCCH.
    [031] A base station to distribute available transmit power of a UE between PUCCH and PUSCH is provided. The base station comprises a receiver configured to receive from the UE at least one power headroom report indicating the power available for transmission at least on the PUCCH, and a processor configured to schedule the UE based on information from the at least one headroom report. received power.
    [032] An advantage with embodiments of the present invention is that the base station can predict the remaining transmit power available when the PUSCH and PUCCH are transmitted simultaneously. Brief description of the drawings
    [033] Figure 1 illustrates the physical downlink resources of LTE according to the state of the art.
    [034] Figure 2 illustrates the LTE time domain structure according to the state of the art.
    [035] Figure 3 illustrates the downlink subframes according to the prior art.
    [036] Figure 4 illustrates uplink L1/L2 control signaling transmission in PUCCH according to the prior art.
    [037] Figure 5 illustrates the PUSCH resource allocation according to the prior art.
    [038] Figures 6 and 7 are flowcharts of the methods according to embodiments of the present invention.
    [039] Figure 8 illustrates the UE and the base station according to embodiments of the present invention. Detailed Description
    [040] Although the modalities of the present invention will be described in the context of an LTE network, the modalities can also be implemented in other networks allowing simultaneous transmission of different physical channels.
    [041] According to embodiments, the base station configures 601 the UE whether simultaneous transmission of PUCCH and PUSCH is possible or not, as illustrated in the flowchart of Figure 6. The base station then signals 602 a parameter to the UE indicating whether simultaneous transmission of PUSCH and PUCCH is possible. The parameter can be signaled via the RRC (Radio Resource Control) protocol or as part of the broadcast system information. Consequently, as illustrated in the flowchart of Figure 7, the UE receives 701 the parameter indicating whether simultaneous transmission of PUSCH and PUCCH is possible, and configures 702 the uplink transmission based on the received parameter according to a modality.
    [042] As a UE has limited available transmit power, it would be desirable to scale the UE such that the available transmit power can be taken into account. Therefore, in situations when simultaneous transmission of PUCCH and PUSCH is possible, it would be desirable to be able to take into account the transmission of PUSCH and PUCCH when determining the available UE transmission power.
    [043] This is achieved according to embodiments of the present invention by introducing power headroom reports indicating the power available for transmission at least on the PUCCH. This implies that a method is provided in a UE to distribute available transmission power to avoid violating the UE power limitations in the PUCCH and the PUSCH. The method is illustrated in the flowchart of Figure 7, which shows that the method comprises determining 703 power available for transmission at least on the PUCCH, and transmitting 704 to a base station at least one power headroom report indicating the power available for transmission at least at PUCCH.
    [044] Therefore, a corresponding method is provided in a base station to distribute available transmit power of a UE between PUCCH, and Physical Uplink Shared Channel, PUSCH. The base station receives 603 of the UE at least one power headroom report indicating the power available for transmission on at least the PUCCH, and schedules 604 the UE based on information from the at least one received power headroom report.
    [045] Power headroom reports can be created in different ways according to the modalities which are further described below.
    [046] In a first mode, the power headroom report indicates the power available for transmission in the PUCCH, that is, PHPUCCH = PCMAX - PUCCH power, where PCMAX is the maximum power for the UE and PUCCH power is the PUCCH power . It should be noted that the existing power headroom report for PUScH (PHPUScH) may also be available. An example of how the power headroom report for PUccH (PHPUccH), among many possible implementations, can be determined is shown below:

    [047] where PcMAX is the maximum transmission power configured for the mobile terminal, PO_PUSCH (j'), PL is the estimated path loss, ΔF_PUCCH(F) is provided by higher layers. Each value of ΔF_PUCCH( F) is dependent on the PUccH format. h(n) is also a value dependent on the PUccH format, where ncQI is the number of information bits for the channel quality information and nHARQ is the number of bits of HARQ. g(i) is the current PUccH power adjustment state and i is the current subframe.
    [048] In a second alternative modality, the existing power headroom report for PUScH is extended to also include PUccH, which implies that the power headroom report is reported for both PUSCH and PUCCH in the same report called PHPUCCH+PUSCH, where PHPUCCH+PUSCH=Pcmax -(the power of PUSCH + the power of PUCCH). An example among many possible implementations is shown below:

    [049] where parameter definitions are specified above. It should also be noted that the power headroom can be expressed in dB in the mW or W domain. For the power headroom report indicating the power available for transmission in PUSCH and PUCCH, the power headroom report can be defined as:

    [050] It should be noted that all PH reports can be defined in the mW or W domain and can be expressed in dB in this way.
    [051] According to a third modality, the power headroom report for PUSCH and PUCCH can also be used in combination with the existing power headroom report for PUSCH. Thus, the power headroom report indicating the power available for transmission in the PUCCH and the PUSCH is transmitted in combination with a power headroom report indicating the power available for transmission in the PUSCH. In this way, it is possible to determine the power available on both PUCCH and PUSCH.
    [052] According to a fourth modality, the power headroom report for PUSCH and PUCCH can also be used in combination with the power headroom report for PUCCH. Thus, the power headroom report indicating the power available for transmission on the PUCCH and the PUSCH is transmitted in combination with a power headroom report indicating the power available for transmission on the PUCCH. In this way, it is possible to determine the power available on both PUCCH and PUSCH.
    [053] According to additional modalities, the power headroom report indicates the transmit power available for a given component carrier c. In the example below, the power headroom report indicates the power available to transmit on the PUCCH for a given c component carrier, PHPUCCH(c)=PCMAX-PUCCH power (c) plus an existing power headroom report for PUSCH, for example defined for a specific component carrier. An example among many possible implementations is shown below:

    [054] where the parameters follow the definitions specified above.
    [055] In a further example, the power headroom report indicating the power available for transmission on the PUCCH and PUSCH can be defined for a given component carrier. That is, PHPUCCH+PUSCH(c) = Pcmax - (PUSCH power(c) + PUCCH power(c)) can be exemplified as:

    [056] where the parameters follow the definitions specified above.
    [057] In a still further example, the power headroom report indicating the power available for transmission in the PUCCH and the PUSCH can be transmitted in combination with a power headroom report indicating the power available for transmission in the PUSCH. These power headroom reports can be defined for a given c-component carrier. The transmission of the different reports can take place simultaneously or in separate instances.
    [058] In a still further example, the power headroom report indicating the power available for transmission on the PUCCH and the PUSCH can be transmitted in combination with a power headroom report indicating the power available for transmission on the PUCCH. These power headroom reports can be defined for a given c-component carrier. The transmission of the different reports can take place simultaneously or in separate instances.
    [059] Power headroom reporting on a given component carrier can be triggered by a path loss change on the same or another component carrier. The UE can send a power headroom report for a carrier, where the path loss is changed beyond a certain threshold. Alternatively, a path loss change on a component carrier can trigger a full power headroom report including reports for all component carriers.
    [060] Power headroom reports indicating the power available for transmission in PUCCH, PUSCH and in PUCCH and PUSCH can be defined as a sum for all component carriers used by a UE.
    [061] It should be noted that the principles described for PUSCH can also be applied to probe reference signals (SRS). That is, when simultaneous transmission of SRS and PUCCH occurs, the embodiments of the present invention are also applicable if PUSCH or PUCCH is replaced by SRS.
    [062] The present invention is also directed to a UE (User Equipment) and a base station, also called an eNB in LTE. The UE is configured to communicate wirelessly with a mobile telecommunication network via base stations. Consequently, the UE and the base station comprise antennas, power amplifiers and other software means and a set of electronic circuitry enabling wireless communication. Figure 8 schematically illustrates a UE and a base station in accordance with embodiments of the present invention.
    [063] Therefore, the UE 806 is adapted to distribute the available transmit power of a UE between PUCCH and PUSCH. The UE comprises a processor 804 configured to determine power available for transmission at least on the PUCCH and a transmitter 805 configured to transmit to a base station at least one power headroom report 821 indicating power available for transmission on at least the PUCCH. As indicated in Figure 8, the transmitter is configured to transmit data in PUSCH and control information in PUCCH. Additionally, the UE comprises a receiver 803 configured to receive a parameter 825 indicating whether simultaneous transmission of PUSCH and PUCCH is possible and, for example, to receive scheduling information 820. Processor 804 is further configured to configure uplink transmission with based on the parameter received.
    [064] Consequently, base station 800 is adapted to distribute the available transmit power of a UE between PUCCH and PUSCH. The base station comprises a receiver 807 for receiving at least one power headroom report 821 indicating the power available for transmission at least on the PUCCH and a processor 801 configured to scale the UE based on information from the at least one power headroom report Received. Furthermore, the base station comprises a transmitter 802 for transmitting scheduling information 820 regarding how to schedule future uplink transmission in the UE, wherein the scheduling information 820 is based on the headroom reports 821.
    [065] Furthermore, processor 801 can be configured to configure the UE whether simultaneous transmission of PUCCH and PUSCH is possible or not, and transmitter 802 can be configured to signal a parameter 825 to the UE indicating whether simultaneous transmission of PUSCH and PUCCH is possible.
    [066] It should be noted that the respective processor 804, 801 of the UE and the base station may be a processor or a plurality of processors configured to perform the different tasks assigned to the aforementioned respective processor of the UE and the base station.
    [067] It should also be noted that the power available for transmission in the different mode is the remaining power available that can be used for transmission on the relevant physical channel such as PUCCH and PUSCH when the power allocated to the respective channels is reduced from the transmission power maximum configured for the handset.
    [068] Modifications and other embodiments of the disclosed invention will come to mind to one skilled in the art having the benefit of the teachings presented in the foregoing descriptions and associated drawings. Therefore, it is to be understood that the invention is not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of this disclosure. Although specific terms may be used here, they are used in a generic and descriptive sense only and not for limiting purposes.
    权利要求:
    Claims (15)
    [0001]
    1. Method for a User Equipment, UE, to report power headroom, the method comprises: determining (703) a power headroom for transmitting on at least one Physical Uplink Control Channel, PUCCH, and transmitting (704) for a base station at least one power headroom report indicating the power headroom for transmission at least on the PUCCH, characterized by the fact that: where the at least one power headroom report is valid for a given ce component carrier wherein said power headroom report is transmitted when a path loss of the at least one component carrier is changed beyond a certain threshold.
    [0002]
    2. Method according to claim 1, characterized in that the power headroom is determined for transmission on the PUCCH and on a Physical Uplink Shared Channel, PUSCH, and the at least one power headroom report indicates the power headroom for transmission on PUCCH and PUSCH.
    [0003]
    3. Method according to claim 2, characterized in that the at least one power headroom report indicating the power headroom for transmission on the PUCCH and on the PUSCH is transmitted in combination with a power headroom report indicating the power headroom for PUSCH transmission.
    [0004]
    4. Method according to claim 2, characterized in that the at least one power headroom report indicating the power headroom for transmission in the PUCCH and the PUSCH is transmitted in combination with a power headroom report indicating the power headroom for PUCCH transmission.
    [0005]
    5. Method according to claim 1, characterized in that the power headroom is determined for transmission on the PUCCH and the at least one power headroom report indicates the power headroom for transmission on the PUCCH.
    [0006]
    6. Method according to claim 4, characterized in that the at least one power headroom report indicating the power headroom for transmission on the PUCCH and on the PUSCH is transmitted simultaneously with the power headroom report indicating the headroom of power for transmission in PUSCH.
    [0007]
    7. Method according to claim 4, characterized in that the at least one power headroom report indicating the power headroom for transmission on the PUCCH and on the PUSCH is transmitted in a separate instance compared to the headroom report of power indicating the power headroom for transmission in PUSCH.
    [0008]
    8. Method according to any one of claims 1 to 7, characterized in that it further comprises: receiving (701) a parameter indicating whether simultaneous transmission of PUSCH and PUCCH is possible, and configuring (702) uplink transmission based on the parameter received.
    [0009]
    9. Method for a base station for scheduling a User Equipment, UE, the method comprises: receiving (603) from the UE at least one power headroom report indicating a power headroom for transmission on at least one Control Channel. Physical Uplink, PUCCH, and characterized by the fact that: wherein the at least one power headroom report is valid for a given component carrier ce wherein said power headroom report is received when a path loss of the at least one component carrier is changed beyond a certain threshold, and scaling (604) the UE based on information from the at least one received power headroom report.
    [0010]
    10. Method according to claim 9, characterized in that the at least one power headroom report indicates the power headroom for transmission in the PUCCH and in the PUSCH.
    [0011]
    11. Method according to claim 10, characterized in that the at least one power headroom report indicating the power headroom for transmission in the PUCCH and the PUSCH is received in combination with a power headroom report indicating the power headroom for PUSCH transmission.
    [0012]
    12. Method according to claim 10, characterized in that the at least one power headroom report indicating the power available for transmission in the PUCCH and PUSCH is received in combination with a power headroom report indicating the power available for broadcast on PUCCH.
    [0013]
    13. Method according to any one of claims 9 to 12, characterized in that it further comprises: configuring (601) the UE and simultaneous transmission of Physical Uplink Control Channel, PUCCH, and Physical Uplink Shared Channel , PUSCH, is possible or not, and signaling (602) a parameter to the UE indicating whether simultaneous transmission of PUSCH and PUCCH is possible.
    [0014]
    14. User Equipment, UE, (806) for reporting power headroom, the UE (806) comprises a processor (804) configured to determine power headroom for transmission on at least one PUCCH, and a transmitter (805) configured to transmit to a base station at least one power headroom report indicating the power headroom for transmission at least on the PUCCH, characterized in that: where the at least one power headroom report is valid for a given component carrier ce wherein said power headroom report is configured to be transmitted when a path loss of the at least one component carrier is changed beyond a certain threshold.
    [0015]
    15. Base station (800) for scheduling a User Equipment, UE, (806), the base station comprises a receiver (807) configured to receive from the UE at least one power headroom report indicating a power headroom for transmission on at least one Physical Uplink Control Channel, PUCCH, and characterized by the fact that the at least one power headroom report is valid for a given CE component carrier wherein said power headroom report is received when a path loss of the at least one component carrier is changed beyond a certain threshold and a processor (801) configured to scale the UE based on information from the at least one received power headroom report.
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    法律状态:
    2020-08-18| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04W 52/36 , H04W 72/12 , H04W 52/34 Ipc: H04W 52/34 (2009.01), H04W 52/36 (2009.01) |
    2020-08-18| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-04-27| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-25| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 29/09/2010, OBSERVADAS AS CONDICOES LEGAIS. PATENTE CONCEDIDA CONFORME ADI 5.529/DF |
    优先权:
    申请号 | 申请日 | 专利标题
    US24809209P| true| 2009-10-02|2009-10-02|
    US61/248092|2009-10-02|
    US61/248,092|2009-10-02|
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