WO2022267309A1 - Procédé et appareil d'attribution de puissance d'envoi de canal de liaison montante, et terminal et support de stockage - Google Patents

Procédé et appareil d'attribution de puissance d'envoi de canal de liaison montante, et terminal et support de stockage Download PDF

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Publication number
WO2022267309A1
WO2022267309A1 PCT/CN2021/131040 CN2021131040W WO2022267309A1 WO 2022267309 A1 WO2022267309 A1 WO 2022267309A1 CN 2021131040 W CN2021131040 W CN 2021131040W WO 2022267309 A1 WO2022267309 A1 WO 2022267309A1
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WIPO (PCT)
Prior art keywords
uplink
uplink channel
transmission power
power
time
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PCT/CN2021/131040
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English (en)
Chinese (zh)
Inventor
吴大焰
唐焕华
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展讯通信（上海）有限公司
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Publication of WO2022267309A1 publication Critical patent/WO2022267309A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface

Definitions

  • the present invention relates to the technical field of communications, and in particular to a method and device for allocating transmission power of an uplink channel, a terminal and a storage medium.
  • both NR and LTE have their own transmission Power and timing, if the two overlap in time (Overlap), and the sum of the transmission power of the two in the Overlap part exceeds the limit range, it is necessary to process the transmission of the NR in the Overlap part.
  • the routine processing is: According to the relevant description in 3GPP protocol 38.213/38.101-3, the maximum value of the sum of NR and LTE transmission power in different scenarios of NSA, in (E-UTRA NR dual connectivity with MCG using E- UTRA and SCG using NR, EN-DC) is And under (E-UTRA NR dual connectivity with MCG using NR and SCG using E-UTRA, NE-DC) is Once the sum of the transmission power of the Overlap part of NR and LTE exceeds the maximum value configured above, the transmission power of NR will be directly reduced; and under EN-DC, if the reduction range of NR transmission power exceeds the maximum reduction range setting of NR uplink channel power Fixed value (XSCALE), you can directly give up the sending of NR.
  • XSCALE NR uplink channel power Fixed value
  • the uplink transmission channel of NR may be more important, if the transmission power is directly reduced or even cut off, the connection performance of the NR link under NSA will be reduced, and in severe cases, NR may not even be able to stay on the network or be disconnected from the network.
  • Embodiments of the present application provide a method and device, a terminal, and a storage medium for uplink channel transmission power allocation, through which the uplink channel transmission power allocation method can be used without affecting the radio resource control connection state (Radio Resource Control Connect, RRC Connect) LTE uplink
  • the connection performance of the NR uplink is enhanced by optimizing the transmission power of the NR uplink and LTE Overlap.
  • an embodiment of the present application provides a method for allocating transmission power of an uplink channel, the method comprising:
  • the overlapping The transmission power of the first set of NR uplink sampling points within the time period is lowered by the first power value to obtain the transmission power of the NR overlapping part, and the second power value is lowered based on the transmission power of the second set of NR uplink sampling points within the overlapping time. determining the transmit power of the NR non-overlapping part; and splicing the transmit power of the NR overlapping part and the NR non-overlapping part to obtain the NR uplink target transmit power.
  • the determining that there is an overlap in time between the NR uplink channel to be sent and the LTE uplink channel includes: determining the uplink channel to be sent in chronological order, and if the uplink channel to be sent is an NR uplink channel, then determining that the uplink channel to be sent is an NR uplink channel.
  • the uplink channel to be sent determines whether there is an LTE uplink channel overlapping with the sending time period of the NR uplink channel to be sent, and if it exists, it is determined that the NR uplink channel to be sent overlaps in time with the LTE uplink channel; or according to In chronological order, determine the uplink channel to be sent, if the uplink channel to be sent is an LTE uplink channel, then determine whether there is a transmission period overlap with the LTE uplink channel to be sent in other uplink channels that are not sent If there is an NR uplink channel, it is determined that there is overlap in time between the NR to be sent and the LTE uplink channel.
  • the determination also includes: determining whether the sum of the transmission powers of all uplink channels exceeds the NSA maximum transmission total within the overlapping time Power: Among them, if the sum of the transmission power of all uplink channels within the overlapping time does not exceed the maximum total transmission power of NSA, the uplink channels of NR and LTE to be transmitted will be allocated according to their respective original calculation values of uplink power; if overlapping The sum of the transmit power of all uplink channels exceeds the maximum total transmit power of the NSA within a time period, then reduce the transmit power of the NR uplink channel, and determine whether the decrease in the transmit power of the NR uplink channel exceeds the first threshold, if the decrease is not If the first threshold is exceeded, the NR uplink channel performs power allocation according to the reduced power value.
  • the determining whether the sum of the transmit power of all uplink channels exceeds the maximum total transmit power of the NSA within the overlapping time includes: taking the sampling point in the time domain of the uplink channel to be sent as the granularity, and in chronological order , to determine whether the sum of the transmit power of all uplink channels within the overlapping time exceeds the maximum total transmit power of the NSA, one by one.
  • said reducing the transmission power of the first set of NR uplink sampling points within the overlapping time by a first power value to obtain the transmission power of the NR overlapping part includes: taking the time-domain sampling points of the first NR uplink channel as a granularity degree, filter out the set of NR uplink sampling points within the overlapping time, and set it as the first set of NR uplink sampling points, and adjust the transmission power of the first set of NR uplink sampling points to in Indicates the maximum total transmit power in EN-DC mode, and P LTE indicates the original calculated value of the uplink power of the LTE uplink channel.
  • the determining the transmission power of the NR non-overlapping part based on the transmission power of the second set of NR uplink sampling points within the overlap time and the down-regulation result of the second power value includes: using the time-domain sampling of the first NR uplink channel
  • the point is the granularity, and the first NR uplink channel and the LTE uplink channel have no overlapping sampling point set in time to filter out, and set it as the NR second uplink sampling point set, and set the NR second uplink sampling point set
  • the transmit power of the point set is adjusted to (P NR -X SCALE ), where P NR represents the original calculated value of the uplink power of the NR uplink channel, and X SCALE represents the first threshold.
  • the determining the transmission power of the NR non-overlapping part based on the transmission power of the second set of NR uplink sampling points within the overlap time and the down-regulation result of the second power value includes: using the time-domain sampling of the first NR uplink channel
  • the point is the granularity, and the first NR uplink channel and the LTE uplink channel have no overlapping sampling point set in time to filter out, and set it as the NR second uplink sampling point set, and set the NR second uplink sampling point set
  • the transmit power of the point set is adjusted to a*(P NR -X SCALE ), where a represents the amplitude adjustment coefficient, P NR represents the original calculated value of the uplink power of the NR uplink channel, and X SCALE represents the first threshold.
  • an uplink channel transmission power allocation device the device includes: a processor and a memory, the memory is used to store at least one instruction, and when the instruction is loaded and executed by the processor, the first aspect is implemented Provided is an uplink channel transmit power allocation method.
  • the device for allocating uplink channel transmission power provided in the second aspect may be a chip.
  • another embodiment of the present application further provides a chip, the chip is connected to a memory, and when the programs or instructions stored in the memory are executed, the uplink channel transmission power allocation method provided in the first aspect is implemented.
  • another embodiment of the present application further provides a terminal, the terminal includes a terminal body and the device for allocating uplink channel transmission power provided in the second aspect.
  • another embodiment of the present application further provides a terminal, the terminal includes a terminal body and the chip provided in the third aspect.
  • another embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method for allocating uplink channel transmission power provided in the first aspect is implemented.
  • the overlapping time The transmission power of the first set of uplink sampling points in the NR is adjusted down by the first power value to obtain the transmission power of the NR overlapping part, and the transmission power of the second set of uplink sampling points of the NR within the overlapping time is adjusted based on the down-adjustment result of the second power value.
  • NR non-overlapping portion transmit power; and splicing the NR overlapping portion transmit power and the NR non-overlapping portion transmit power to obtain NR uplink target transmit power.
  • Fig. 1 is the protocol processing flowchart of the uplink transmission power allocation of NR and LTE under NSA in the prior art
  • FIG. 2 is a flowchart of an uplink channel transmission power allocation method provided by an embodiment of the present application
  • FIG. 2a is a schematic diagram of Overlap on the uplink channel time of NR and LTE provided by an embodiment of the present application;
  • FIG. 3 is a schematic structural diagram of an uplink channel transmit power allocation device provided by another embodiment of the present application.
  • an NR terminal when an NR terminal performs uplink transmission of NR and LTE under NSA, it first judges whether there is an overlap in the uplink channel transmission of NR and LTE in time, and then judges the sum of the uplink transmission power of NR and LTE in the Overlap part If the limit is exceeded, adjust the uplink channel transmit power of the Overlap part of NR to ensure that the sum of NR and LTE uplink transmit power does not exceed the range.
  • the conventional processing is: when performing uplink transmission of NR and LTE under NSA, once it is judged that the uplink channel transmission of NR and LTE has an Overlap in time, and the sum of the uplink transmission power of NR and LTE in the Overlap part If the limit is exceeded, regardless of EN-DC or NE-DC, the uplink transmission power of the Overlap part NR will be unconditionally reduced, and even the transmission of NR will be abandoned when the power is reduced a lot.
  • Figure 1 is a flow chart of protocol processing for uplink transmission power allocation between NR and LTE under NSA in the prior art. During the uplink transmit power allocation process between NR and LTE, the following steps need to be performed:
  • Step 101 In the NSA uplink concurrent phase, confirm whether there is an overlap in time between the uplink channel transmission of NR and LTE. If there is no overlap in time between the uplink channel transmission of NR and LTE, then perform step 102. If there is an overlap in time, step 103 is performed.
  • Step 102 The NR internally allocates the transmission power.
  • Step 103 Determine the current NSA type, if the NSA type is NE-DC, execute step 104, if the NSA type is EN-DC, execute step 105.
  • Step 104 Adjust the transmission power of the sampling points of the Overlap part of the NR and LTE uplink channel according to the protocol to
  • Step 105 Determine whether to drop the channel sent on the NR, once it is judged that the sum of the uplink transmission power of the Overlap part NR and LTE exceeds the limit range (that is, determine ), then execute step 106, if it is determined that the sum of the uplink transmission power of the Overlap part NR and LTE does not exceed the limit range (that is, determine ), then execute step 107.
  • Step 106 Drop the channel sent on the NR.
  • Step 107 adjust the transmission power of the sampling point of the Overlap part of the NR and LTE uplink channel according to the agreement to After that, step 102 is performed.
  • an embodiment of the present application provides a method for allocating uplink channel transmission power.
  • the method for allocating uplink channel transmission power can be applied to concurrent application scenarios of NR and LTE under NSA, that is, it can include NE-DC scenarios and EN -DC scene.
  • connection performance of the NR uplink can be enhanced by optimizing the transmission power of the NR uplink and LTE Overlap without affecting the RRC Connect state LTE uplink connection performance.
  • the problem of blindly reducing the connection performance of the NR link or even canceling the transmission of the NR uplink channel is avoided.
  • FIG. 2 is a flow chart of an uplink channel transmission power allocation method provided by an embodiment of the present application. As shown in Figure 2, the power allocation method includes the following steps:
  • Step 201 In the NSA uplink concurrent phase, confirm whether there is an overlap in time between the NR and LTE uplink channels to be sent, if there is no overlap, perform step 202, and if there is overlap, perform step 203.
  • Step 202 Allocation of transmit power for NR and LTE respectively.
  • Step 203 Determine whether the drop in transmit power of the first NR uplink channel exceeds a first threshold within the overlapping time, if not, execute step 202, if not, execute step 204.
  • Step 204 Reduce the transmission power of the first set of NR uplink sampling points in the Overlap part by a first power value to obtain the transmission power of the NR overlapping part, and decrease the second power based on the transmission power of the second set of NR uplink sampling points within the overlapping time
  • the NR non-overlapping portion transmit power is determined as a result of the value reduction, and the NR overlapping portion transmit power and the NR non-overlapping portion transmit power are concatenated to obtain the NR uplink target transmit power.
  • step 201 at the stage of determining whether NR and LTE have an overlap, the uplink information within the time period of the upcoming uplink channel can be sent in a chronological order before an NR/LTE uplink channel is about to be sent.
  • Channels namely, other LTE/NR uplink channels that are known and not yet sent are judged to determine whether there is an overlap in time.
  • determining that NR and LTE uplink channel transmissions overlap in time may include:
  • the uplink channel to be sent in chronological order, and if the uplink channel to be sent is an NR uplink channel, determine whether there is a sending time period with the NR uplink channel to be sent in other uplink channels that are not sent If there is an overlapping LTE uplink channel, it is determined that the NR to be sent overlaps in time with the LTE uplink channel; or
  • the uplink channel to be sent is an LTE uplink channel, determine whether there is a sending time period with the LTE uplink channel to be sent in other uplink channels not sent If there is an overlapping NR uplink channel, it is determined that the NR to be sent and the LTE uplink channel overlap in time.
  • step 202 if the NR and LTE uplink channel transmissions do not overlap in time, perform step 202, and if the NR and LTE uplink channel transmissions overlap in time, perform step 203.
  • Figure 2a is a schematic diagram of the Time Overlap of NR and LTE uplink channels provided by an embodiment of the present application, as shown in Figure 2a, the first NR uplink channel is about to be sent in the time period t 0 ⁇ t 5 , at t 0 ⁇ t In the time period of 5 , there is an overlap between the unsent LTE uplink channel and the first NR uplink channel to be sent in time, and the corresponding Overlap part is t 2 ⁇ t 3 time period and t 4 ⁇ t 5 time periods.
  • step 202 In the specific implementation of step 202, according to the determination result of step 201, after it is determined that the uplink channel transmission of NR and LTE does not overlap in time, NR and LTE can be allocated to transmit power respectively. According to the determination result of step 203, the sum of the transmission power of all uplink channels in the Overlap part of the time of determining the uplink channels of NR and LTE does not exceed the maximum total transmission power of NSA Then NR and LTE can be made to allocate their respective transmit powers.
  • the sum of the transmit power of all uplink channels exceeds the maximum total transmit power of NSA in the Overlap part of the time when the uplink channel transmission of NR and LTE is determined
  • the transmission power of the LTE uplink channel remains unchanged, that is, the power allocation is performed according to the original calculation value of the LTE uplink power, and the Overlap part
  • the transmit power of the NR uplink channel is allocated with the reduced transmit power.
  • step 203 Before performing step 203, the following steps may also be performed:
  • the uplink channels of NR and LTE to be transmitted will be allocated according to their original calculation values of uplink power;
  • the NR uplink channel performs power allocation according to the reduced power value.
  • determining whether the sum of the transmit powers of all uplink channels within the overlapping time exceeds the maximum total transmit power of the NSA includes: taking the sampling points in the time domain of the uplink channels to be sent as the granularity, and sampling one by one in chronological order Point to determine whether the sum of the transmit power of all uplink channels exceeds the maximum total transmit power of the NSA within the overlapping time. Specifically, it can be judged according to the sampling point set S2 and the sampling point set S3 shown in FIG. 2a whether the sum of the transmission power of the NR uplink channel to be transmitted and the untransmitted LTE uplink channel exceeds the maximum total transmission power of the NSA.
  • step 203 it is judged whether the sum of the transmission power of all uplink channels in the overlapping time (Overlap part) exceeds the maximum total transmission power of NSA If the maximum total transmission power of NSA is not exceeded Then execute step 202, if the maximum total transmission power of NSA is exceeded Then step 204 is executed.
  • this step 204 may include the following sub-steps:
  • Step 204a Taking the time-domain sampling points of the NR uplink channel as the granularity, filter out the set of NR uplink sampling points in the part where NR and LTE have Overlap, and set it as set A (the first set of NR uplink sampling points); and The NR uplink sampling point set of another part of LTE without Overlap is also screened out and set as set B (the second NR uplink sampling point set).
  • Step 204b Lower the transmission power of the first set of NR sampling points (set A) in the Overlap part by a first power value.
  • the transmission power of the first set of NR sampling points in the above-mentioned NR can be adjusted according to the protocol to in Indicates the maximum total transmit power in EN-DC mode, and P LTE indicates the original calculated value of the uplink power of the LTE uplink channel.
  • P NR -X SCALE the transmit power of the second set of NR uplink sampling points to (P NR -X SCALE ), where P NR represents the original calculated value of the uplink power of the NR uplink channel, and X SCALE represents the first threshold.
  • the transmission power of the NR uplink channel in the Overlap part when the transmission power of the NR uplink channel in the Overlap part is greatly reduced, the transmission power of the NR uplink channel in the non-Overlap part can be adaptively reduced to reduce the impact of phase discontinuity, thereby improving the success rate of NR uplink transmission.
  • the transmit power of the NR uplink channel of the non-Overlap part may be adjusted by setting an amplitude adjustment coefficient.
  • the transmit power of the above-mentioned NR second uplink sampling point set can be calculated by the following formula:
  • a is an amplitude adjustment coefficient, which can be set according to simulation and actual measurement
  • P NR represents an original calculated value of uplink power of an NR uplink channel
  • X SCALE represents the first threshold. The impact of the Overlap part is minimized through the above power allocation method, thereby improving the success rate of NR uplink transmission.
  • restriction methods of the amplitude adjustment coefficient include:
  • the difference between the transmission power of the NR non-overlapping part and the transmission power of the NR overlapping part is greater than a first threshold value, then use the ratio of the first threshold value to the difference value as the amplitude adjustment coefficient; or
  • the value of the amplitude adjustment coefficient is 1.
  • Step 204c The transmission power of the first set of NR uplink sampling points determined in step 204b and the transmission power of the second set of NR uplink sampling points can be spliced together in together to obtain the complete NR uplink target transmit power.
  • FIG. 3 is a schematic structural diagram of an uplink channel transmit power allocation device provided in another embodiment of the present application. As shown in FIG. The instructions are loaded and executed by the processor 301 to implement the uplink channel transmission power allocation method provided by the embodiment shown in FIG. 2 .
  • the uplink channel transmission power allocation device provided in the embodiment shown in FIG. 3 may be a chip or a chip module.
  • Yet another embodiment of the present application further provides a chip, which is connected to a memory, and when the program or instruction stored in the memory is executed, the method for allocating transmit power of an uplink channel provided by the embodiment shown in FIG. 2 is implemented.
  • Another embodiment of the present application further provides a terminal, the terminal includes a terminal body and the device for allocating uplink channel transmission power provided by the embodiment shown in FIG. 3 .
  • Another embodiment of the present application further provides a terminal, and the terminal includes a terminal body and the aforementioned chip connected to the memory.
  • Still another embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method for allocating uplink channel transmission power provided by the embodiment shown in FIG. 2 is implemented.
  • terminals involved in the embodiments of the present invention may include, but are not limited to, personal computers (Personal Computer, PC), personal digital assistants (Personal Digital Assistant, PDA), wireless handheld devices, tablet computers (Tablet Computer), Mobile phones, MP3 players, MP4 players, etc.
  • PC Personal Computer
  • PDA Personal Digital Assistant
  • Tablett Computer Tablet Computer
  • Mobile phones MP3 players, MP4 players, etc.
  • the application may be an application program (nativeApp) installed on the terminal, or may also be a webpage program (webApp) of a browser on the terminal, which is not limited in this embodiment of the present invention.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined Or it can be integrated into another system, or some features can be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.
  • the above-mentioned integrated units implemented in the form of software functional units may be stored in a computer-readable storage medium.
  • the above-mentioned software functional units are stored in a storage medium, and include several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) or a processor (Processor) execute the methods described in various embodiments of the present invention. partial steps.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

Les modes de réalisation de la présente invention concernent un procédé et un appareil d'attribution de puissance d'envoi de canal de liaison montante, et un terminal et un support de stockage. Le procédé comprend : dans une phase de concurrence de liaison montante NSA, s'il est déterminé que des canaux de liaison montante NR et LTE qui doivent être envoyés se chevauchent en termes de temps, et s'il est déterminé que l'amplitude de réduction de la puissance d'envoi d'un premier canal de liaison montante NR dans un temps de chevauchement dépasse une première valeur de seuil, réduire la puissance d'envoi d'un premier point d'échantillonnage de liaison montante NR établi dans le temps de chevauchement par une première valeur de puissance, de manière à obtenir la puissance d'envoi d'une partie de chevauchement NR, et réduire la puissance d'envoi d'un second point d'échantillonnage de liaison montante NR défini dans le temps de chevauchement par une seconde valeur de puissance, puis multiplier la puissance d'envoi réduite par un coefficient d'ajustement d'amplitude, de manière à obtenir la puissance d'envoi d'une partie de non-chevauchement NR; et l'épissage de la puissance d'envoi de la partie de chevauchement NR et de la puissance d'envoi de la partie de non-chevauchement NR, de façon à obtenir une puissance d'envoi cible de liaison montante NR. La performance de connexion d'une liaison montante NR peut être améliorée en réglant de manière optimale la puissance d'émission d'une liaison montante NR et d'une partie de chevauchement LTE sans affecter la performance de connexion d'une liaison montante LTE dans un état RRC Connect.
PCT/CN2021/131040 2021-06-22 2021-11-17 Procédé et appareil d'attribution de puissance d'envoi de canal de liaison montante, et terminal et support de stockage WO2022267309A1 (fr)

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