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WO2018201777A1 - Procédé de commande de puissance et dispositif terminal - Google Patents

Procédé de commande de puissance et dispositif terminal Download PDF

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Publication number
WO2018201777A1
WO2018201777A1 PCT/CN2018/076759 CN2018076759W WO2018201777A1 WO 2018201777 A1 WO2018201777 A1 WO 2018201777A1 CN 2018076759 W CN2018076759 W CN 2018076759W WO 2018201777 A1 WO2018201777 A1 WO 2018201777A1
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WO
WIPO (PCT)
Prior art keywords
resources
priority
power
cell
terminal device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/076759
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English (en)
Chinese (zh)
Inventor
酉春华
刘星
郭英昊
王亚飞
黄曲芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2018201777A1 publication Critical patent/WO2018201777A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a power control method and a terminal device.
  • the power control is to change the transmission power of the User Equipment (UE) or the eNodeB in a wireless manner to compensate the path loss and shadow fading of the channel and suppress inter-cell interference.
  • UE User Equipment
  • LTE Long Term Evolution
  • the terminal device After receiving the uplink resource allocated by the base station, the terminal device calculates the power of transmitting data by using the uplink resource.
  • the power adjustment rule is: different power factors are set for different channels to adjust the power of the resource, but for the intra-channel resources, there is no specific power adjustment mechanism, so that the service power allocation of different requirements of the same channel is unreasonable. As a result, some business requirements cannot be met, and the delay in data transmission using these resources increases the reliability.
  • the resources for data transmission of the terminal device may overlap at least two in time, and the terminal device calculates each resource separately at the overlapping time.
  • the corresponding power is used as the transmission power.
  • the sum of the transmission power of each resource may exceed the maximum power that the terminal can transmit, which may result in the data transmitted on each resource not being correctly transmitted.
  • the present invention provides a power control method and a terminal device.
  • the method and apparatus provided by the present invention solve the prior art that there is no specific power adjustment mechanism for the same channel, so that the service power allocation of different requirements of the same channel is unreasonable, thereby A problem that has caused some business needs to be unsatisfied.
  • a power control method comprising:
  • the terminal device determines at least two resources, the at least two resources have a first overlapping area in the time domain, and the at least two resources each correspond to a first power in the first overlapping area;
  • the terminal device is configured according to the at least two resources.
  • the priority of one copy determines a power factor of each of the at least two resources; wherein, the first power of the at least two resources in the overlap region is adjusted based on the power factor
  • the sum of the powers is less than or equal to the maximum power, and a resource with a higher priority among the at least two resources has a larger power factor, and a resource with a lower priority has a smaller power factor.
  • the priority may be determined according to the priority corresponding to the at least two resources.
  • the method further includes:
  • the terminal device performs power adjustment for each resource separately using a power factor of each of the at least two resources
  • the terminal device sends data to the wireless access device according to the adjusted power of each resource.
  • One possible implementation includes:
  • the at least two resources correspond to different cells, and according to the preset cell priority, the higher the priority of the cell corresponding to the resource in the at least two resources, the priority of the corresponding resource The higher.
  • the different cells belong to different cell groups, and according to the preset priority of the cell group, the higher the priority of the cell group corresponding to the resource in the at least two resources, the corresponding resource The higher the priority.
  • the cell includes a low frequency authorized cell, a low frequency unlicensed cell, a high frequency authorized cell, and a high frequency unlicensed cell, and the priority of the cell includes:
  • the priority of the low frequency authorized cell is greater than the priority of the high frequency authorized cell
  • the priority of the low frequency authorized cell is greater than the priority of the high frequency unlicensed cell
  • the priority of the low frequency authorized cell is greater than the priority of the low frequency unlicensed cell
  • the priority of the low frequency unlicensed cell is greater than the priority of the high frequency unlicensed cell
  • the priority of the low frequency unlicensed cell is greater than the priority of the high frequency unlicensed cell
  • the priority of the high frequency authorized cell is greater than the priority of the high frequency unlicensed cell.
  • the method further includes:
  • the terminal device notifies the physical layer of the terminal device of the priority of the at least two resources by using a media access control MAC layer.
  • the resources used by the data with high priority of the logical channel in the at least two resources have higher priority than the resources used by the data with lower priority of the logical channel.
  • the determining, by the terminal device, the power factor of each of the at least two resources according to a priority of each of the at least two resources includes:
  • the sum of the powers of the first power adjusted in the overlapping area is less than or equal to the maximum power, and the sum of the powers corresponding to each cell group is not less than the basic power corresponding to each base station.
  • different basic powers are set for different cell groups, and on the premise of ensuring smooth transmission of resources of high priority cells, it is avoided that some cells have no resources available.
  • a second overlapping area exists in the at least two resources, and a sum of the second powers of the at least two resources in the second overlapping area is greater than a maximum power
  • the terminal device uses the adjusted power of the untransmitted data on the first overlapping area to the wireless connection for the resource that has not transmitted data in the at least two resources.
  • the incoming device sends data.
  • One possible implementation includes:
  • the terminal device is configured according to the at least two resources Determining a power factor of each of the at least two resources, and/or determining, by the terminal device, the at least two according to a priority of a physical channel corresponding to each of the at least two resources a power factor of each of the resources; wherein a sum of powers adjusted by the first power of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor And the power factor of the resource with high priority among the at least two resources is large, and the power factor of the resource with low priority is small.
  • the at least two resources may also be corresponding to different physical channels.
  • the priority of the physical channel may be combined with the priority of the resource to increase the priority of the priority, thereby improving the priority of the resource. flexibility.
  • the priority of the physical channel corresponding to each of the at least two resources includes: a priority of the random access channel > a priority of the control channel > a data channel priority.
  • a power control method including:
  • the terminal device determines at least two resources, the at least two resources have a first overlapping area in the time domain, and the at least two resources each correspond to a first power in the first overlapping area;
  • the terminal device determines the at least two resources by using a priority of the at least two resources notified by the MAC layer a power factor of each of the plurality of powers; wherein a sum of powers adjusted by the first power of the at least two resources in the overlap region is less than or equal to the maximum power based on the power factor, and Among the at least two resources, the resource with a higher priority has a larger power factor, and the resource with a lower priority has a smaller power factor.
  • a terminal device including:
  • the storage device stores instructions coupled to the processor, and when the instructions are loaded and executed by the processor, the following steps are performed:
  • Determining at least two resources wherein the at least two resources have a first overlapping area in a time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;
  • determining the priority of the at least two resources by the priority of the at least two resources notified by the MAC layer a power factor; wherein, based on the power factor, a sum of powers of each of the at least two resources adjusted in a first power of the overlap region is less than or equal to the maximum power, and the at least two The resources with higher priority among the resources have larger power factor, and the resources with lower priority have smaller power factor.
  • the terminal device further includes:
  • a transceiver configured to perform power adjustment on each resource separately by using a power factor of each of the at least two resources; and send data to the wireless access device according to the adjusted power of each resource.
  • the at least two resources correspond to different cells, and according to the preset cell priority, the higher the priority of the cell corresponding to the resource in the at least two resources, the priority of the corresponding resource The higher.
  • the different cells belong to different cell groups, and according to the preset priority of the cell group, the higher the priority of the cell group corresponding to the resource in the at least two resources, the corresponding resource The higher the priority.
  • the cell includes a low frequency authorized cell, a low frequency unlicensed cell, a high frequency authorized cell, and a high frequency unlicensed cell, and the priority of the cell includes:
  • the priority of the low frequency authorized cell is greater than the priority of the high frequency authorized cell
  • the priority of the low frequency authorized cell is greater than the priority of the high frequency unlicensed cell
  • the priority of the low frequency authorized cell is greater than the priority of the low frequency unlicensed cell
  • the priority of the low frequency unlicensed cell is greater than the priority of the high frequency unlicensed cell
  • the priority of the low frequency unlicensed cell is greater than the priority of the high frequency unlicensed cell
  • the priority of the high frequency authorized cell is greater than the priority of the high frequency unlicensed cell.
  • the processor is further configured to notify, by using a MAC layer, a priority of the at least two resources to a physical layer of the terminal device.
  • the resources used by the data with high priority of the logical channel in the at least two resources have higher priority than the resources used by the data with lower priority of the logical channel.
  • the processor is further configured to:
  • each of the at least two resources Determining a power factor of each of the at least two resources based on a priority of each of the at least two resources and the base power; wherein each of the at least two resources is based on the power factor
  • the sum of the powers adjusted by the first power of the overlapping area is less than or equal to the maximum power, and the sum of the powers corresponding to each cell group is not less than the basic power corresponding to each cell group.
  • a second overlapping area exists in the at least two resources, and a sum of second powers of the at least two resources in the second overlapping area is greater than a maximum Power; the processor is also used to:
  • the processor is further configured to:
  • the at least two resources correspond to at least two physical channels, and the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than a maximum power, according to each of the at least two resources Determining a power factor of each of the at least two resources, and/or determining a power factor of each of the at least two resources according to a priority of a physical channel corresponding to each of the at least two resources Wherein the sum of powers adjusted by the first power of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the at least two resources A medium with a higher priority has a larger power factor, and a resource with a lower priority has a smaller power factor.
  • the priority of the physical channel corresponding to each of the at least two resources includes: a priority of the random access channel > a priority of the control channel > a data channel priority.
  • a fourth aspect provides a terminal device, including:
  • the storage device stores instructions coupled to the processor, and when the instructions are loaded and executed by the processor, the following steps are performed:
  • determining the priority of the at least two resources by the priority of the at least two resources notified by the MAC layer a power factor; wherein, based on the power factor, a sum of powers of each of the at least two resources adjusted in a first power of the overlap region is less than or equal to the maximum power, and the at least two The resources with higher priority among the resources have larger power factor, and the resources with lower priority have smaller power factor.
  • a computer readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method of the first and second aspects of the claims.
  • a sixth aspect provides a power control method, where a terminal device performs data communication with at least two base stations, and the method includes:
  • a cell index of the serving cell of the at least two base stations where the cell index of the serving cell of the at least two base stations is determined by signaling interaction negotiation by the at least two base stations;
  • the terminal device performs power headroom reporting according to the cell index.
  • the at least two base stations include a primary base station and a secondary base station, and the primary base station and the secondary base station negotiate the cell index of the terminal device through signaling interaction, and pass part or all of the negotiated cell index to the primary base station. And/or the secondary base station sends to the terminal device.
  • the terminal device receives a cell activation and deactivation command sent by the primary base station or the secondary base station, and determines, according to the cell activation and deactivation command, the cell index corresponding to the received cell index. Those cells of the primary base station and/or the secondary base station are activated or deactivated.
  • the cell index of the serving cell of the primary base station and the cell index of the serving cell of the secondary base station are determined according to different fields predefined by the protocol.
  • the transmission power allocation is performed according to the transmitted service or resource to meet the service requirement of the specific service, and the service is improved.
  • the reliability of data transmission is improved.
  • the priority of the channel and the priority of the resource can be reasonably combined to determine the power of data transmission, which can effectively ensure the timeliness of different physical channels and different services. reliability.
  • FIG. 1 is a schematic flowchart of a power control method according to Embodiment 1 of the present application.
  • FIG. 2 is a schematic structural diagram of an overlapping area in an embodiment of the present application.
  • FIG. 3 is a schematic diagram of power changes before and after power adjustment of an overlapping area by using the method provided by the embodiment of the present application;
  • FIG. 4 is a schematic flowchart of a power control method according to Embodiment 2 of the present application.
  • 4A is a schematic diagram of performing at least two resources sorting by using the method provided in Embodiment 2 of the present application;
  • FIG. 5 is a schematic flowchart of a power control method according to Embodiment 3 of the present application.
  • FIG. 6 is a schematic flowchart diagram of a power control method according to Embodiment 5 of the present application.
  • FIGS. 7a-7d are schematic diagrams of determining a power priority by applying the method provided in Embodiment 5 of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal device according to Embodiment 6 of the present application.
  • FIG. 9 is a schematic structural diagram of a terminal device according to Embodiment 7 of the present application.
  • the method provided by the present application implements resource-based power adjustment, and can implement power adjustment of a single physical channel (or signal) and multiple physical channels (or signals).
  • the physical channel may include: a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), and a physical random access channel (PRACH);
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • PRACH physical random access channel
  • the physical channel that can be referred to in the embodiment of the present application can also be interpreted as a physical signal, where the physical signal can be: a sounding reference (sounding reference) Signal, SRS).
  • the embodiment of the present application provides a power control method, where the method may specifically include the following implementation steps:
  • Step 101 The terminal device determines at least two resources, where the at least two resources have a first overlapping area in the time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;
  • the manner of determining at least two resources may be:
  • the terminal device receives at least one indication of the network device.
  • the manner in which the terminal device receives the indication may be: receiving the indication by Radio Resource Control (RRC), and/or receiving the indication by using Downlink Control Information (DCI).
  • RRC Radio Resource Control
  • DCI Downlink Control Information
  • the at least one indication is used to allocate at least two resources, and the at least two resources are used for performing uplink transmission of at least two pieces of data.
  • the at least two resources are resources of at least one cell, and the at least two resources may include at least one type of resources: time domain resources, time-frequency resources, beam-based time-frequency Resources, time-frequency resources based on air interface format, radio resources for terminal-to-terminal (D2D) communication, and radio resources for communication between terminals and network devices, for Orthogonal Frequency Division Multiplexing (OFDM) Radio resources, radio resources for single-carrier frequency-division multiple access (SC-FDMA), contention-based time-frequency resources.
  • the air interface format is a parameter set of a subcarrier interval and a cyclic prefix, for example, set by a numerology parameter.
  • the first overlapping area in the embodiment refers to a portion corresponding to the first time domain corresponding to the overlapping area in FIG. 2, and determines that the value of the first time domain is greater than a set.
  • the threshold may determine that the area corresponding to the first time domain is an overlapping area.
  • the terminal device determines a first power in the first time domain of the cell 1; determines another first power in the first time domain of the cell 2; and if the first power of the cell 1 and the cell 2 corresponds to the first time domain It is greater than the maximum power, that is, the power control scenario targeted by the embodiment of the present application.
  • Step 102 If the at least two resources correspond to the same physical channel, and the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power (the maximum power may be that the terminal devices overlap a maximum output power of the area, the terminal device determining a power factor of each of the at least two resources according to a priority of each of the at least two resources; wherein the at least two are based on the power factor
  • the sum of the adjusted powers of the first power in the overlapping area is less than or equal to the maximum power, and the power factor of the high priority resource among the at least two resources is large, priority Low resources have a small power factor.
  • the specific adjustment manner may be to expand, reduce, or remain unchanged for the first power.
  • the transmission power corresponding to the other resources is to be adjusted, the total transmission power does not exceed the maximum power, and the other resources may include other resources for the uplink transmission of the serving cell, or Resources of other TTI lengths of the cell for uplink transmission of the terminal device.
  • the maximum power can also be understood as the maximum output power, such as the linear value of the UE total configured maximum output power.
  • the power factor may be greater than or equal to 0.
  • the terminal device may perform data transmission based on the adjusted power.
  • the specific implementation may be:
  • Step 103 The terminal device separately adjusts power for each resource by using a power factor of each of the at least two resources, and sends data to the wireless access device according to the adjusted power of each resource.
  • the priority of at least two resources in the embodiment of the present application may be pre-defined by the protocol, or pre-configured by the network device.
  • the priority provided by the embodiment may be determined by using parameters of multiple dimensions, and specifically, the method may include:
  • the first type of resource-based transmission time interval (TTI) and/or sub-carrier spacing determines the priority of the resource, which may be:
  • the length of the TTI can also be understood as the duration of the time domain resource of the resource), the higher the priority; and/or
  • the priority of the TTI length may be determined first and then the priority of the subcarrier interval may be determined, and vice versa.
  • a resource with a narrow subcarrier spacing has a high priority
  • a resource with a wide subcarrier spacing has a low priority
  • the resource with a short TTI length has a high priority
  • the resource with a long TTI length has a low priority.
  • the base station allocates uplink resources in the two cells, where the uplink resources of Cell 1 are allocated.
  • the length of the TTI is 1 ms
  • the length of the uplink resource of Cell 2 is 0.5 ms.
  • the sum of the first powers determined by the terminal device for the two uplink transmissions is greater than the maximum output power, and power adjustment is needed to ensure the transmission power requirement.
  • the terminal device Since the TTI of the Cell 2 is short, the quality of service (QoS) of the data carried on the resource with a short TTI is generally high, so the terminal device preferentially guarantees the data transmission of the Cell 2. If there is still power remaining, the remaining power is allocated to the data transmission of Cell1 at this time. As shown in Figure 3.
  • QoS quality of service
  • the control channel may be used to transmit channel state information (CSI)/scheduling request (SR)/hybrid automatic repeat request (HARQ). Feedback.
  • CSI channel state information
  • SR cheduling request
  • HARQ hybrid automatic repeat request
  • Feedback feedback.
  • the PUCCH can be divided into a short PUCCH and a long PUCCH according to the TTI length of the PUCCH, which is used for HARQ feedback, and the short PUCCH only needs to be occupied.
  • the long PUCCH has a longer duration than the short PUCCH.
  • the number of OFDM or SC-FDMA symbols occupied in the same numerology scenario can be used to transmit CSI/ SR/HARQ feedback (delay-insensitive downlink data), if the long PUCCH and the short PUCCH are simultaneously transmitted, the power allocation of the short PUCCH is prioritized, and in the case of remaining power, the remaining power can be allocated for data transmission of the long PUCCH.
  • CSI/ SR/HARQ feedback delay-insensitive downlink data
  • the CSI channel state information includes at least one of the following: CQI channel quality information, used by the base station to select a modulation and coding scheme to better utilize radio resources; and a PMI precoding matrix indication for multi-antenna transmission.
  • CQI channel quality information used by the base station to select a modulation and coding scheme to better utilize radio resources
  • PMI precoding matrix indication for multi-antenna transmission.
  • the RI rank (layer) indication is used in multi-antenna transmission.
  • the HARQ feedback is used to notify the network device whether the downlink data is successfully decoded by the terminal device.
  • the priority of the resource is determined by the priority of the cell corresponding to the resource.
  • the specific implementation can be:
  • the at least two resources correspond to different cells, and according to the preset cell priority, the higher the priority of the cell corresponding to the resource in the at least two resources, the higher the priority of the corresponding resource.
  • High frequency cell the working frequency band is greater than or equal to 6 GHz;
  • the working frequency band is less than 6 GHz
  • Unlicensed cells Spectrum resources are shared and can also be understood as spectrum resources that can be shared with wireless guarantees (wifi). It can also be understood as a cell that needs to perform idle channel detection before transmitting data, for example, energy detection. If the energy detection is below the threshold, it is considered idle and can send data; otherwise, it is considered busy and data transmission is not possible.
  • the spectrum resource is dedicated to the unlicensed cell.
  • the dividing principle may be the priority of the low frequency authorized cell > the priority of the low frequency unlicensed cell > the priority of the high frequency authorized cell > the priority of the high frequency unlicensed cell, and the priority of the cell may also be the following when comparing At least one:
  • the priority of the low frequency authorized cell is greater than the priority of the high frequency authorized cell
  • the priority of the low frequency authorized cell is greater than the priority of the high frequency unlicensed cell
  • the priority of the low frequency authorized cell is greater than the priority of the low frequency unlicensed cell
  • the priority of the low frequency unlicensed cell is greater than the priority of the high frequency unlicensed cell
  • the priority of the low frequency unlicensed cell is greater than the priority of the high frequency unlicensed cell
  • the priority of the high frequency authorized cell is greater than the priority of the high frequency unlicensed cell
  • the priority of the low frequency unlicensed cell is greater than the priority of the high frequency authorized cell
  • the priority of the high frequency authorized cell is greater than the priority of the low frequency unlicensed cell.
  • the priority of the cell in the embodiment of the present application may be pre-defined by the protocol, or may be pre-configured by the network device.
  • the at least two resources include the first resource and the second resource, and the cell corresponding to the first resource is a low frequency cell; the cell corresponding to the second resource is a high frequency cell; according to the priority principle of the cell: for the same TTI length At least two resources, the priority of the low frequency cell is higher than the priority of the high frequency cell, and the priority of the corresponding first resource is higher than the priority of the second resource.
  • the cell may also belong to a different cell group, and the cell group also has a priority.
  • the priority of the cell group may also be considered.
  • the specific implementation may be:
  • the different cells belong to different cell groups, and according to the priority of the preset cell group, the higher the priority of the corresponding cell group in the at least two resources, the higher the priority of the corresponding resource.
  • the priority of the cell group in the embodiment of the present application may be pre-defined by the protocol, or may be pre-configured by the network device.
  • the first cell group has a higher priority than the second cell group. If the first cell belongs to the first cell group, and the second cell belongs to the second cell group, the first resource corresponds to the first cell, and the second resource corresponds to the second cell.
  • one of the priority of the cell group or the priority of the cell may be selected for judgment, or may be simultaneously determined if the priority of the cell group and the priority of the cell are simultaneously determined.
  • a criterion may be set in advance, for example, the priority of the cell is the final result, or the priority of the cell group is the final result.
  • the first cell group is a master cell group (MCG)
  • the second cell group is a secondary cell group (SCG).
  • the at least two resources include a first resource and a second resource
  • the cell group corresponding to the first resource is a primary cell group
  • the cell group corresponding to the second resource is a secondary cell group
  • the priority principle of the foregoing cell group For the at least two resources of the same TTI, the priority of the primary cell group is higher than the priority of the secondary cell group, and the priority of the corresponding first resource is higher than the priority of the second resource.
  • the third type determines the priority of at least two resources by the priority of the media access control (MAC) packet corresponding to the at least two resources.
  • the specific implementation may be:
  • the terminal device notifies the physical layer of the terminal device of the priority of the at least two resources by using a MAC layer, where a priority of the at least two resources corresponds to a MAC packet corresponding to the at least two resources.
  • the MAC layer may be configured on the MAC layer based on the mapping relationship between the logical channel and the TTI length, and then the MAC packet obtained by the MAC packet may be prioritized by the logical channel corresponding to the data transmitted by the MAC packet or the TTI length.
  • the level determines the priority of the MAC packet.
  • the resource used for the high priority data (ie, the MAC packet) of the logical channel in the at least two resources has a higher priority than the data used by the data with the lower priority of the logical channel.
  • the fourth type determines the priority of the resource based on whether the resource transmits data.
  • the specific implementation may be:
  • a second overlapping area exists in the at least two resources, and a sum of the second powers of the at least two resources in the second overlapping area is greater than a maximum power
  • the terminal device uses the adjusted power of the untransmitted data on the first overlapping area to the wireless connection for the resource that has not transmitted data in the at least two resources.
  • the incoming device sends data.
  • the terminal device performs power adjustment on other resources including the second overlapping area except the resources that have not transmitted data among the at least two resources. That is, in the embodiment, when power adjustment is performed for at least two resources, power adjustment may be performed in units of overlapping regions; if power adjustment is performed on the second overlap region, power adjustment is performed only for resources including the second overlap region.
  • the specific implementation of this embodiment may be: in the second overlapping area, if the sum of the second powers of the at least two resources is greater than the maximum output power, the resources that have used the allocated power for data transmission in at least two resources are prioritized. The power allocation of the resources for data transmission is guaranteed. As for the data of the allocated power, the power is not allocated when the power adjustment is performed.
  • the priority division of at least two resources may be displayed in other manners, and details are not described herein again.
  • the foregoing priority descriptions are implemented separately, but in the specific implementation, the foregoing various priority principles may be used in combination, for example, the priority of the TTI length is combined with the priority of the subcarrier spacing; The priority of the TTI length of the resource, if the priority of the TTI length is the same; then the priority of the subcarrier spacing may be determined; or the priority of the subcarrier spacing of at least two resources may be determined first, if the subcarrier spacing is prioritized The level is the same; then the priority of the TTI length can be judged.
  • an unlicensed cell/HF cell may have a small TTI length and/or a subcarrier spacing is large, but the transmission may be performed.
  • the data is not required for delay and reliability, and the transmission power may not be preferentially guaranteed, and may be equivalent to the low priority of the preset priorities.
  • the solution in this embodiment may be configured to set basic power corresponding to the cell group for different cell groups (that is, each base station has a basic guaranteed power), and the specific terminal device is configured according to each of the at least two resources.
  • the priority determines the power factor of each of the at least two resources includes:
  • the sum of the powers of the first power in the overlap region is less than or equal to the maximum power, and the sum of the powers corresponding to each cell group is not less than the basic corresponding to each cell group. power.
  • the UE can perform data communication with at least two base stations.
  • the cell group of each base station is pre-configured with a corresponding basic power, for example, the first basic power is the cell group of the primary base station.
  • the basic guaranteed power is the basic guaranteed power of the cell group of the secondary base station.
  • the terminal device preferentially satisfies the first basic power and the second basic power when performing power allocation in the overlapping area. For the remaining power, power allocation is performed according to the various priority principles described above.
  • the embodiment of the present application provides a power control method, where the method may specifically include the following implementation steps:
  • Step 401 The terminal device determines at least two resources, where the at least two resources have a first overlapping area in the time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;
  • Step 402 If the at least two resources correspond to at least two physical channels, and the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than a maximum power, the terminal device is configured according to the at least Determining a power factor of each of the at least two resources by a priority of each of the two resources, and/or determining, by the terminal device, a priority of a physical channel corresponding to each of the at least two resources Determining a power factor of each of at least two resources; wherein, a sum of powers of each of the at least two resources adjusted in the first power of the overlapping area is less than or equal to the power factor based on the power factor
  • the maximum power is described, and a resource with a higher priority among the at least two resources has a larger power factor, and a resource with a lower priority has a smaller power factor.
  • the at least two physical channels may be a PUSCH and a PUCCH. If the priority of the physical channel is associated with the priority of the at least two resources, the at least two resources include the first resource and the second resource, the first resource corresponds to the PUCCH resource, and the second resource corresponds to the PUSCH resource, and each of the first resources The sum of the power factors of the resources is not less than the sum of the power factors of each resource of the second resource.
  • the power factor corresponding to the same channel can be determined according to the method of Embodiment 1.
  • the priority of the physical channel may also be referred to when determining the priority of the resource, where the physical channel of each of the at least two resources is prioritized.
  • the level includes: priority of the random access channel > priority of the control channel > data channel priority.
  • Step 403 The terminal device separately adjusts power for each resource by using a power factor of each of the at least two resources, and sends data to the wireless access device according to the adjusted power of each resource.
  • the priority of the physical channel and the priority of the resource may be used alone or in combination.
  • the channel priority may be determined in advance, and then the resource priority is determined; and vice versa.
  • each channel has two TTI lengths.
  • the method provided in this embodiment can be implemented in at least two ways. Prioritization of two resources, including:
  • the priority of the priority of the resource is first sorted according to the length of the TTI (the higher the priority of the TTI is, the higher the priority is). For the resources with the same TTI length, the channel priority is used.
  • the priority of the preset physical channel is: PUCCH>PUSCH) and is sorted again (the sorted result is shown in mode 1 in FIG. 4A);
  • the priority of the physical channel is prioritized according to the priority of the physical channel (such as the priority of the preset physical channel: PUCCH > PUSCH). If multiple resources correspond to the same physical channel, Then, the TTI length (the higher the priority of the TTI is, the higher the priority) is reordered (the sorted result is shown in the second mode in FIG. 4A).
  • the first embodiment and the second embodiment determine the priority of each resource in the physical layer.
  • the embodiment may further determine the priority of at least two resources in the MAC layer.
  • Step 501 The terminal device determines at least two resources, where the at least two resources have a first overlapping area in the time domain, and the at least two resources each correspond to a first power in the first overlapping area;
  • Step 502 If the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power, the terminal device determines the at least the priority of the at least two resources notified by the MAC layer. a power factor of each of the two resources; wherein a sum of powers adjusted by the first power of the at least two resources in the overlapping area is less than or equal to the maximum based on the power factor Power, and a resource with a higher priority among the at least two resources has a larger power factor, and a resource with a lower priority has a smaller power factor.
  • Step 503 The terminal device separately adjusts power for each resource by using a power factor of each of the at least two resources, and sends data to the wireless access device according to the adjusted power of each resource.
  • the manner in which the terminal device determines the resource priority at the MAC layer may be:
  • the terminal device performs data multiplexing and assembling the at least one MAC packet according to a mapping relationship between the pre-configured logical channel and the TTI length.
  • logical channel 1 has 200 bytes of data and can be transmitted through TTI length 1.
  • Logical channel 2 has 300 bytes of data and can be transmitted through TTI lengths 1 and 2.
  • the priority of logical channel 1 is higher than the priority of logical channel 2.
  • the base station allocates a 400-byte TTI length 1 radio resource, and the TTI length of the resource is TTI length 1.
  • the MAC layer of the terminal device performs resource allocation according to the priority of the logical channel and the TTI length of the radio resource, and the result of the allocation is as follows: logical channel 1 transmits 200 bytes of data, logical channel 2 transmits 200 bytes of data, and remaining 100 bytes of data can be left to Data transmission is only performed after the secondary base station allocates new radio resources.
  • the base station allocates a 100-byte uplink resource with a TTI length of 2.
  • the MAC layer of the terminal device performs resource allocation according to the priority of the radio resource and the logical channel and the TTI length.
  • the logical channel 2 transmits 100 bytes of data. If the radio resources of the TTI length 1 and the TTI length 2 have overlapping regions in the time domain, in the overlapping region, since the logical channel of the data transmitted by the resource of the TTI length 1 has a higher priority, the terminal device preferentially allocates the TTI length.
  • the power of the resource of 1 allocates the power of the resource of length TTI 2 in the case of remaining power.
  • the physical layer of the terminal device receives the priority determined by the terminal device through the MAC layer, and performs a power adjustment operation according to the priority.
  • the terminal device performs data communication with at least two base stations
  • the primary base station configures cells 1 and 2 for the UE
  • the secondary base station configures cells 2 and 3 for the UE.
  • the UE needs to report the power headroom of all cells. Since the primary base station and the secondary base station configure the number 2 cell to the UE at the same time, the reporting format of the existing power headroom report cannot distinguish the two cells, so the reporting will cause confusion to the number 2 cell, which is based on the prior art.
  • a power control method is further provided, where the terminal device performs data communication with at least two base stations, and the method includes:
  • the terminal device receives the cell index of the serving cell of the at least two base stations, where the cell index of the serving cell of the at least two base stations is determined by the at least two base stations through signaling interaction negotiation;
  • the at least two base stations may include a primary base station and a secondary base station
  • the cell index of the terminal device may be negotiated through the signaling interaction between the primary base station and the secondary base station, and part or all of the cell index after the negotiation is passed through the primary Transmitting to the terminal device by the base station and/or the secondary base station;
  • the terminal device performs power headroom reporting according to the cell index.
  • the terminal device may further receive a cell activation and deactivation command sent by the primary base station or the secondary base station, and determine, according to the cell activation and deactivation command, the cell index to determine the received Those cells of the primary base station and/or the secondary base station in the cell corresponding to the cell index are activated or deactivated.
  • different fields may be predefined by the protocol for indicating the cell index of the serving cell of the primary base station and the cell index of the serving cell of the secondary base station.
  • the terminal device pre-defines different fields based on the protocol for power headroom reporting.
  • the embodiment of the present application provides a power control method, where the method may specifically include the following implementation steps:
  • Step 601 The terminal device determines at least two resources, where the at least two resources have a first overlapping area in the time domain, and the at least two resources each correspond to a first power in the first overlapping area;
  • the target data packet that can be used for transmission of each of the at least two resources includes: a protocol data unit (PDU), an uplink control information (UCI, Uplink Control Information), or a transport PDU.
  • the uplink control information of the road; the PDU may be a newly transmitted PDU of a HARQ (Hybrid Automatic Repeat reQuest) or a PDU of a HARQ retransmission.
  • the any one of the at least one protocol data unit includes data of a part of the logical channels or data of all the logical channels of the at least one logical channel, and may be HARQ new data or HARQ retransmission data.
  • the uplink control information includes any one of the following: ACK/NACK feedback information for downlink data, CSI (Channel State Information) information, and SR (Scheduling Request) information.
  • the uplink data of the protocol data unit includes the data of the partial logical channel or the data of all the logical channels in the at least one logical channel, and may be HARQ new data or HARQ retransmission data, and includes uplink control information of the path. .
  • the at least two resources may be located in different serving cells, or the same serving cell.
  • the at least two resources may be located on the same physical channel or on different physical channels.
  • the resource used for the transport protocol data unit may be located in the PUSCH (Physical Uplink Shared Channel), and the resource used for transmitting the uplink control information may be located in the PUCCH (Physical Uplink Control Channel).
  • the resources that transmit PDUs along with the uplink control information may be located on the PUSCH.
  • Step 602 the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than the maximum power (the maximum power may be the maximum output power of the terminal device in the overlapping area), and the terminal device according to the Determining, by a priority of each of the at least two resources, a power factor for each of the at least two resources; wherein, based on the power factor, each of the at least two resources is at a first of the overlapping regions
  • the sum of the powers after the power adjustment is less than or equal to the maximum power, and the power factor of the resource with higher priority among the at least two resources is larger, and the power factor of the resource with lower priority is smaller.
  • the terminal when the terminal sends the target data packet to the network device by using at least two resources, the terminal may determine, according to a preset rule, a power priority corresponding to each target data packet or a resource corresponding to each target data packet. Power priority.
  • the preset rule has at least one of the following:
  • A determining a power priority of the target data packet according to a logical channel with a highest priority corresponding to the service data included in the target data packet;
  • the priority of the logical channel may be a priority configured by the network device for constructing a logical channel of the protocol data unit, or may be a priority of a logical channel configured by the network device and dedicated to power control.
  • B if any one of the target data packets includes a MAC CE (medium access control control element), for example, at least one of the following: BSR (buffer status report buffer status report) MAC CE, PHR (power headroom report power headroom report) MAC CE a C-RNTI (cell radio network temporary identifier) MAC CE, a Configured Grant confirmation MAC CE, then the target data packet has the highest power priority, or the target data packet corresponds to Resources have the highest power priority.
  • BSR buffer status report buffer status report
  • PHR power headroom report power headroom report
  • C-RNTI cell radio network temporary identifier
  • Configured Grant confirmation MAC CE then the target data packet has the highest power priority, or the target data packet corresponds to Resources have the highest power priority.
  • the protocol data unit includes the associated uplink control information, determine the power priority of the protocol data unit or the power priority of the corresponding resource of the protocol data unit as a high priority.
  • the terminal may determine the power priority of the protocol data unit or the power priority of the protocol data unit corresponding resource according to rules A and C, A and B, B and C or A and B and C.
  • the terminal performs, according to the power priority corresponding to each protocol data unit in the at least one protocol data unit or the power priority corresponding to the physical resource of each protocol data unit. Power adjustment.
  • the power priority corresponding to the protocol data unit or the power priority corresponding to the physical resource of each protocol data unit is higher, and the power priority is guaranteed.
  • Step 603 The terminal device separately adjusts power for each resource by using a power factor of each of the at least two resources, and sends data to the wireless access device according to the adjusted power of each resource.
  • power scaling may be performed on resources of the at least one target data packet or the at least one target data packet, and a power factor of a target data packet with a high priority or a power factor of a resource of the target data packet is not less than a priority.
  • the power factor of the low target data packet or the power factor of the resource of the target data packet may be performed on resources of the at least one target data packet or the at least one target data packet, and a power factor of a target data packet with a high priority or a power factor of a resource of the target data packet is not less than a priority.
  • the terminal uses the power after scaling to send at least one target data packet to the network device in the two resources.
  • the terminal calculates at least two first powers according to the at least two resources, and calculates a first power for each resource.
  • the power is limited, and the resource with high power priority is preferentially guaranteed to perform data transmission, that is, the power factor is large, and at least one second power is obtained.
  • the terminal uses the at least one second power to send the target data packet to the network device in the at least two resources.
  • two logical channels (LCH1 and LCH2) have a priority of LCH1 of 1, LCH2 has a priority of 2, and priority 1 is greater than 2.
  • the terminal has two resources allocated by the base station, resource 1, for transmitting protocol data unit 1 (corresponding to TB1 in FIG. 7b), and resource 2 for transmitting protocol data unit 2 (corresponding to TB2 in FIG. 7b).
  • the protocol data unit 1 when the terminal generates the protocol data unit, the protocol data unit 1 includes data of LCH1 and LCH2.
  • the power is limited. Due to the data of the LCH1 included in the protocol data unit 1, the data transmission of the protocol data unit 1 is preferentially guaranteed according to the power adjustment principle provided in this embodiment. power.
  • the terminal has two resources allocated by the base station, and the resource 1 is used for transmitting the protocol data unit 1 (corresponding to TB1 in FIG. 7c), and the resource 2 is used for transmitting the protocol data unit 2 and the associated uplink control information (corresponding to TB2 in FIG. 7C).
  • the protocol data unit 1 includes the data of the LCH1 and the LCH2
  • the protocol data unit 2 only includes the data of the LCH2, but at the same time, the uplink control information is included.
  • the power is limited. Since the protocol data unit 2 follows the uplink control information, the data transmission of the protocol data unit 2 is preferentially guaranteed according to the power adjustment principle provided in this embodiment. power.
  • LCH1 two logical channels, LCH1 and LCH2, LCH1 have a priority of 1, LCH2 has a priority of 2, priority 1 is greater than 2, and LCH1 is a special logical channel, for example, LCH1 carries a URLLC ( Ultra Reliability and Low Latency Communication, ultra high priority ultra low latency data.
  • the terminal has two resources allocated by the base station, and the resource 1 is used for transmitting the protocol data unit 1 (corresponding to TB1 in FIG. 7d), and the resource 2 is used for transmitting the protocol data unit 2 and the associated uplink control information (corresponding to TB2 in FIG. 7d).
  • the protocol data unit 1 When the terminal generates the protocol data unit, the protocol data unit 1 includes the data of the LCH1 and the LCH2, and the protocol data unit 2 only includes the data of the LCH2, but at the same time, the uplink control information is included. In the overlapping area, that is, the area corresponding to the dotted line, the power is limited. Although the protocol data unit 2 follows the uplink control information, but the protocol data unit 1 contains a special logical channel with a high priority, then the priority of the protocol data unit 1 is guaranteed. The power of data transmission.
  • the network device may send the indication information to the terminal device, so that the terminal device determines which are special logical channels according to the indication information, and allows the logical channels to have higher priority than the uplink control information.
  • the embodiment of the present application further provides a terminal device, including:
  • the storage device 802 stores instructions coupled to the processor, and when the instructions are loaded and executed by the processor, the following steps are performed:
  • determining the priority of the at least two resources by the priority of the at least two resources notified by the MAC layer a power factor; wherein, based on the power factor, a sum of powers of each of the at least two resources adjusted in a first power of the overlap region is less than or equal to the maximum power, and the at least two The resources with higher priority among the resources have larger power factor, and the resources with lower priority have smaller power factor.
  • the terminal device further includes:
  • a transceiver configured to perform power adjustment on each resource separately by using a power factor of each of the at least two resources; and send data to the wireless access device according to the adjusted power of each resource.
  • the at least two resources correspond to different cells, and according to the preset cell priority, the higher the priority of the cell corresponding to the resource in the at least two resources, the higher the priority of the corresponding resource.
  • the different cells belong to different cell groups, and according to the preset priority of the cell group, the higher the priority of the cell group corresponding to the resource in the at least two resources, the higher the priority of the corresponding resource. high.
  • the cell includes a low frequency authorized cell, a low frequency unlicensed cell, a high frequency authorized cell, and a high frequency unlicensed cell
  • the priority of the cell includes: a priority of a low frequency authorized cell > a priority of a low frequency unauthorized cell >Priority of high frequency authorized cell>Priority of high frequency unlicensed cell.
  • the processor is further configured to notify, by using a MAC layer, a priority of the at least two resources to a physical layer of the terminal device.
  • the resources used by the data with high priority of the logical channel in the at least two resources have higher priority than the resources used by the data with lower priority of the logical channel.
  • the processor is further configured to:
  • each of the at least two resources Determining a power factor of each of the at least two resources based on a priority of each of the at least two resources and the base power; wherein each of the at least two resources is based on the power factor
  • the sum of the powers adjusted by the first power of the overlapping area is less than or equal to the maximum power, and the sum of the powers corresponding to each cell group is not less than the basic power corresponding to each cell group.
  • a second overlapping area exists in the at least two resources, and a sum of the second powers of the at least two resources in the second overlapping area is greater than a maximum power;
  • the processor is also used to:
  • the processor is further configured to:
  • the at least two resources correspond to at least two physical channels, and the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than a maximum power, according to each of the at least two resources Determining a power factor of each of the at least two resources, and/or determining a power factor of each of the at least two resources according to a priority of a physical channel corresponding to each of the at least two resources Wherein the sum of powers adjusted by the first power of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, and the at least two resources A medium with a higher priority has a larger power factor, and a resource with a lower priority has a smaller power factor.
  • the priority of the physical channel corresponding to each of the at least two resources includes: a priority of the random access channel > a priority of the control channel > a data channel priority.
  • the embodiment of the present application further provides another terminal device, including:
  • the processor 901 The processor 901;
  • the storage device 902 stores instructions coupled to the processor, and when the instructions are loaded and executed by the processor, the following steps are performed:
  • Determining at least two resources wherein the at least two resources have a first overlapping area in a time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;
  • determining the priority of the at least two resources by the priority of the at least two resources notified by the MAC layer a power factor; wherein, based on the power factor, a sum of powers of each of the at least two resources adjusted in a first power of the overlap region is less than or equal to the maximum power, and the at least two The resources with higher priority among the resources have larger power factor, and the resources with lower priority have smaller power factor.
  • the embodiment of the present application further provides another terminal device, where the terminal device includes:
  • a determining unit configured to determine at least two resources, where the at least two resources have a first overlapping area in a time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;
  • an adjusting unit configured to: if the at least two resources correspond to the same physical channel, and the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than a maximum power, according to the at least two resources
  • the priority of each copy determines a power factor for each of the at least two resources; wherein, after the first power of the overlap region is adjusted, each of the at least two resources is adjusted based on the power factor
  • the sum of the powers is less than or equal to the maximum power, and the power factor of the resource with higher priority among the at least two resources is larger, and the power factor of the resource with lower priority is small.
  • the above-mentioned determining unit and the adjusting unit can implement all the contents provided by the first and second embodiments.
  • the specific implementation is the same according to the first embodiment, and details are not described herein again.
  • the embodiment of the present application further provides another terminal device, where the terminal device includes:
  • a determining unit configured to determine at least two resources, where the at least two resources have a first overlapping area in a time domain, and each of the at least two resources corresponds to a first power in the first overlapping area;
  • an adjusting unit configured to determine, when the sum of the first powers corresponding to the at least two resources in the first overlapping area is greater than a maximum power, the at least two servings by using a priority of the at least two resources notified by the MAC layer a power factor of each of the resources; wherein a sum of powers adjusted by the first power of the at least two resources in the overlapping area is less than or equal to the maximum power based on the power factor, And the power factor of the resource with high priority among the at least two resources is large, and the power factor of the resource with low priority is small.
  • the solution provided by the foregoing embodiment may be implemented by physical hardware or by a software program
  • the instructions corresponding to the implementation solution may be stored in a computer readable storage medium.
  • the embodiment further provides a computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the methods of Embodiments 1 through 3.

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Abstract

La présente invention concerne un procédé de commande de puissance et un dispositif terminal, résolvant le problème de l'état de la technique selon lequel certaines exigences de service ne peuvent pas être satisfaites parce qu'il n'existe pas de mécanisme de réglage de la puissance spécifique pour un canal. Le procédé comprend les étapes suivantes : un dispositif terminal détermine au moins deux ressources, lesdites au moins deux ressources présentant une première zone de chevauchement dans un domaine temporel, chaque ressource dans la première zone de chevauchement correspondant à une première puissance ; si lesdites au moins deux ressources correspondent au même canal physique, et si la somme des premières puissances correspondant auxdites au moins deux ressources dans la première zone de chevauchement est supérieure à une puissance maximale, le facteur de puissance de chaque ressource est déterminé en fonction de la priorité de chacune des au moins deux ressources, la somme des premières puissances, après ajustement de la première puissance de chaque ressource dans la zone de chevauchement sur la base du facteur de puissance de chaque ressource, est inférieure ou égale à la puissance maximale, et le facteur de puissance de la ressource présentant une priorité supérieure parmi lesdites au moins deux ressources est supérieur au facteur de puissance de la ressource présentant une priorité inférieure.
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