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CN-122002494-A - Communication method and device, and computer readable storage medium

CN122002494ACN 122002494 ACN122002494 ACN 122002494ACN-122002494-A

Abstract

The application provides a communication method, a device and a computer readable storage medium, wherein the communication method comprises the steps of sending a power headroom report PHR media access control element (MAC CE), wherein the PHR MAC CE carries the power headroom of a first service cell and the maximum power reduction value of an assumed Physical Uplink Shared Channel (PUSCH), and the first service cell is a service cell in a secondary cell group in double connection. The application provides a scheme for reporting power headroom under the condition that a main cell does not support dynamic waveform switching in a double-connection scene.

Inventors

  • DENG YUN
  • HAN LIFENG

Assignees

  • 展讯通信（上海）有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (20)

  1. 1. A method of communication, comprising: And sending a power headroom report PHR media access control element (MAC CE), wherein the PHR MAC CE carries the power headroom of a first service cell and the maximum power reduction value of an assumed Physical Uplink Shared Channel (PUSCH), and the first service cell is a service cell in a secondary cell group in double connection.
  2. 2. The communication method of claim 1, wherein the PHR MAC CE comprises a first power headroom PH field, a first maximum power value PCMAX field, and a second PCMAX field, the first PH field being used to indicate a power headroom of the first serving cell, the first PCMAX field being used to indicate a maximum output power configured for the first serving cell, and the second PCMAX field being used to indicate a maximum power reduction value of the hypothesized PUSCH.
  3. 3. The communication method of claim 1, wherein the PHR MAC CE further carries a power headroom of a second serving cell, the second serving cell being a primary cell in a dual connection.
  4. 4. A communication method according to claim 3, wherein the order of the bytes occupied by the power headroom of the second serving cell in all bytes of the PHR MAC CE is earlier than the order of the bytes occupied by the power headroom of the first serving cell in all bytes of the PHR MAC CE.
  5. 5. A communication method according to claim 3, characterized in that the first serving cell is a new wireless NR cell and the second serving cell is a long term evolution LTE cell.
  6. 6. A communication method according to claim 3, characterized in that in response to the second serving cell being the primary cell, the type of power headroom of the second serving cell is type 2.
  7. 7. The communication method according to claim 1, characterized by further comprising: Receiving first information, wherein the first information is used for configuring whether to report the power headroom in a double-connection scene; Transmitting the PHR MAC CE carrying the power headroom of a second serving cell, the power headroom of the first serving cell and the assumed maximum power reduction value of the PUSCH in response to the power headroom of the first information configuration reporting dual connectivity scenario, or And responding to the power headroom in the first information configuration reporting double-connection scene, and sending the PHR MAC CE, wherein the PHR MAC CE carries the power headroom of the first service cell and the assumed maximum power reduction value of the PUSCH.
  8. 8. The communication method according to claim 1, further comprising, prior to reporting the PHR MAC CE: And sending second information, wherein the second information indicates whether the PHR MAC CE is supported.
  9. 9. The communication method according to claim 1, wherein the power headroom type of the first serving cell is type 1 or type 3.
  10. 10. The communication method according to claim 1, wherein the assumed maximum power reduction value of PUSCH is a maximum power reduction value determined assuming uplink PUSCH transmission in an uplink waveform that is not currently employed.
  11. 11. A method of communication, comprising: And receiving PHR MAC CE, wherein the PHR MAC CE carries the power margin of a first service cell and the assumed maximum power reduction value of the PUSCH, and the first service cell is a service cell in a secondary cell group in double connection.
  12. 12. The communication method of claim 11, wherein the PHR MAC CE comprises a first PH field, a first maximum PCMAX field, and a second PCMAX field, the first PH field to indicate a power headroom of the first serving cell, the first PCMAX field to indicate a maximum output power configured for the first serving cell, and the second PCMAX field to indicate a maximum power reduction value of the hypothesized PUSCH.
  13. 13. The communication method of claim 11, wherein the PHR MAC CE further carries a power headroom of a second serving cell, the second serving cell being a primary cell in a dual connection.
  14. 14. The communication method according to claim 13, characterized by further comprising: And sending first information, wherein the first information is used for configuring whether to report the power headroom in the double-connection scene.
  15. 15. The communication method according to claim 11, characterized by further comprising: and receiving second information, wherein the second information indicates whether the PHR MAC CE is supported.
  16. 16. The communication method according to claim 11, characterized by further comprising: And sending third information, wherein the third information is used for configuring and reporting the maximum power reduction value of the assumed PUSCH.
  17. 17. A communication device, comprising: And the communication module is used for sending a power headroom report PHR media access control element (MAC CE), wherein the PHR MAC CE carries the power headroom of a first service cell and the maximum power reduction value of an assumed Physical Uplink Shared Channel (PUSCH), and the first service cell is a service cell in a secondary cell group in double connection.
  18. 18. A communication device, comprising: and the communication module is used for receiving PHR MAC CE, wherein the PHR MAC CE carries the power headroom of a first service cell and the assumed maximum power reduction value of the PUSCH, and the first service cell is a service cell in a secondary cell group in double connection.
  19. 19. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, performs the steps of the communication method of any one of claims 1 to 10 or performs the steps of the communication method of any one of claims 11 to 16.
  20. 20. A computer program product comprising computer programs/instructions which, when executed by a processor, implement the steps of the communication method of any one of claims 1 to 10 or perform the steps of the communication method of any one of claims 11 to 16.

Description

Communication method and device, and computer readable storage medium Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus, and a computer readable storage medium. Background In the existing communication system, dynamic switching between orthogonal frequency division multiplexing (discrete fouriertransform-spread orthogonal frequency division multiplexing, DFT-s-OFDM) and Cyclic Prefix (CP) OFDM of a Physical Uplink common channel (Physical Uplink SHARED CHANNEL, PUSCH) can be supported. The terminal device may report a power headroom report (Power Headroom Report, PHR) for PUSCH transmission currently using one of DFT-S-OFDM or CP-OFDM waveforms and power required for a hypothetical PUSCH using other waveforms than the current waveform. Typically, there is only one serving base station for the terminal device, and when two or more links are applied, the terminal device may need to access two or more network devices, in a manner known as dual connectivity (Dual Connectivity, DC). One of the network devices is a primary network device and the other network device is a secondary network device. In the dual connectivity scenario, the PHR format is a multi-entry PHR (Multiple ENTRY PHR WITH assumed PUSCH) with an assumed PUSCH, which is reported to the network device in a media access Control (Medium Access Control, MAC) Control Element (CE). This MAC CE may be referred to as a multi-entry PHR MAC CE with a hypothetical PUSCH. The above-described multi-entry PHR MAC CE with hypothetical PUSCH can only be applied to New Radio dual connectivity (New Radio Dual Connectivity, NR-DC) and New Radio evolved node B dual connectivity (NE-DC) scenarios. In some dual connectivity scenarios, the primary cell does not support uplink waveform dynamic handover, e.g., in the evolved node B new wireless dual connectivity (E-UTRA New Radio Dual Connectivity, EN-DC) or Next Generation (NG) EN-DC scenarios, the primary cell (PRIMARY CELL, pcell) is a long term evolution (Long Term Evolution, LTE) cell, and the LTE cell cannot apply uplink waveform dynamic handover. It is therefore necessary to introduce a new MAC CE in order to support the function of dynamic waveform switching in the above-described dual connectivity scenario. Disclosure of Invention The application provides a communication method and a communication device, and provides a scheme for reporting power headroom under the condition that a main cell does not support dynamic waveform switching in a double-connection scene. In order to achieve the above purpose, the present application provides the following technical solutions: In a first aspect, a communication method is provided, where the communication method includes sending a power headroom report PHR medium access control element MAC CE, where the PHR MAC CE carries a power headroom of a first serving cell and a maximum power reduction value of an assumed physical uplink shared channel PUSCH, and the first serving cell is a serving cell in a secondary cell group in dual connection. Optionally, the PHR MAC CE includes a first power headroom PH field, a first maximum power value PCMAX field, and a second PCMAX field, where the first PH field is used to indicate a power headroom of the first serving cell, the first PCMAX field is used to indicate a maximum output power configured for the first serving cell, and the second PCMAX field is used to indicate a maximum power reduction value of the assumed PUSCH. Optionally, the PHR MAC CE further carries a power headroom of a second serving cell, where the second serving cell is a primary cell in dual connectivity. Optionally, the order of the bytes occupied by the power headroom of the second serving cell in all bytes of the PHR MAC CE is earlier than the order of the bytes occupied by the power headroom of the first serving cell in all bytes of the PHR MAC CE. Optionally, the first serving cell is a new wireless NR cell, and the second serving cell is a long term evolution LTE cell. Optionally, in response to the second serving cell being a primary cell, a type of the power headroom of the second serving cell is type 2. Optionally, the communication method further comprises the steps of receiving first information, wherein the first information is used for configuring whether to report the power headroom in a double-connection scene, responding to the first information to configure the power headroom in the double-connection scene, sending the PHR MAC CE, wherein the PHR MAC CE carries the power headroom of a second service cell, the power headroom of the first service cell and the maximum power reduction value of the assumed PUSCH, or responding to the first information to configure the power headroom in the double-connection scene, sending the PHR MAC CE, and the PHR MAC CE carries the power headroom of the first service cell and the maximum power reduction value of th