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Communications method and apparatus

專利號
US12133196B2
公開日期
2024-10-29
申請人
Huawei Technologies Co., Ltd.（CN Shenzhen）
發(fā)明人
Hong Wang; Jian Zhang
IPC分類
H04W72/02; H04W24/10; H04W74/00; H04W76/27
技術(shù)領(lǐng)域
message,mac,terminal,ce,rrc,lcp,device,channel,tbs,quality
地域： Shenzhen

摘要

A communications method and apparatus are provided. The method includes: generating, by a terminal device, a first media access control layer control element (MAC CE), where the first MAC CE includes channel quality information of the terminal device; determining, by the terminal device, whether to multiplex the first MAC CE into a message 3; and when determining to multiplex the first MAC CE into the message 3, sending, by the terminal device, the message 3 including the first MAC CE to a network device.

說明書

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No. PCT/CN2018/109666, filed on Oct. 10, 2018, the disclosure of which is hereby incorporated by reference in its entirety.

TECHNICAL FIELD

This application relates to the field of wireless communications technologies, and in particular, to a communications method and apparatus.

BACKGROUND

A long term evolution (LTE) machine type communication (MTC) system or a narrow band Internet of Things (NB-IoT) system is different from conventional LTE communication, does not pursue a data transmission rate, a plurality of frequency bands, a plurality of antennas, or full-duplex transmission, but requires that a terminal device can implement low power consumption and low costs. Typical application scenarios of MTC or NB-IoT include a smart grid, smart agriculture, smart transportation, smart household, environment detection, and the like. In an application scenario of MTC or NB-IoT, data transmission in the application scenario is characterized by a relatively small amount of data and an uncertain time of arrival of the data. In the current technology, to transmit data between a terminal device and a base station, a radio resource control (RRC) connection needs to be first established through a random access (RA) process, and then the data is transmitted by using the established RRC connection. In the foregoing process, signaling overheads and a delay are relatively large, and power consumption of the terminal device is relatively large.

權(quán)利要求

1
What is claimed is:1. A communications method, comprising:generating, by a terminal device, a first media access control layer control element (MAC CE) and a first media access control service data unit (MAC SDU), wherein the first MAC CE comprises channel quality information of the terminal device and the first MAC SDU comprises a radio resource control (RRC) message;determining, by the terminal device based on a logical channel prioritization (LCP) priority of the first MAC CE, whether to multiplex the first MAC CE into a message 3, wherein determining whether to multiplex the first MAC CE into the message 3 comprises:determining whether a transport block size (TBS) needed by all MAC SDUs and all MAC CEs that have an LCP priority higher than the LCP priority of the first MAC CE is less than a TBS of the message 3 and a difference between the TBS needed by all MAC SDUs and all MAC CEs that have an LCP priority higher than the LCP priority of the first MAC CE and the TBS of the message 3 is greater than or equal to a TBS needed by the first MAC CE; andresponsive to determining to multiplex the first MAC CE into the message 3, sending, by the terminal device, the message 3 comprising the first MAC CE and the first MAC SDU to a network device,wherein the LCP priority of the first MAC SDU is higher than the LCP priority of the first MAC CE.2. The method according to claim 1, wherein the LCP priority of the first MAC CE is higher than an LCP priority of a second MAC CE, and the second MAC CE comprises a padding buffer status report (BSR).3. The method according to claim 1, wherein the LCP priority of the first MAC CE is lower than an LCP priority of a second media access control service data unit (MAC SDU), and the second MAC SDU comprises data of a logical channel.4. The method according to claim 1, wherein the method further comprises:receiving, by the terminal device, first indication information from the network device, wherein the first indication information indicates the terminal device to report the channel quality information.5. The method according to claim 1, wherein the terminal device has a capability of reporting the channel quality information.6. A communications apparatus, comprising:a processor; anda computer readable storage medium storing programming for execution by the processor, the programming comprising instructions to:generate a first media access control layer control element (MAC CE) and a first media access control service data unit (MAC SDU), wherein the first MAC CE comprises channel quality information of the communications apparatus, and the first MAC SDU comprises a radio resource control (RRC) message;determine, based on a logical channel prioritization (LCP) priority of the first MAC CE, whether to multiplex the first MAC CE into a message 3, wherein determining whether to multiplex the first MAC CE into the message 3 comprises:determining whether a transport block size (TBS) needed by all MAC SDUs and all MAC CEs that have an LCP priority higher than the LCP priority of the first MAC CE is less than a TBS of the message 3 and a difference between the TBS needed by all MAC SDUs and all MAC CEs that have an LCP priority higher than the LCP priority of the first MAC CE and the TBS of the message 3 is greater than or equal to a TBS needed by the first MAC CE; andresponsive to determining to multiplex the first MAC CE into the message 3, send the message 3 comprising the first MAC CE and the first MAC SDU to a network device,wherein the LCP priority of the first MAC SDU is higher than the LCP priority of the first MAC CE.7. The apparatus according to claim 6, wherein the LCP priority of the first MAC CE is higher than an LCP priority of a second MAC CE, and the second MAC CE comprises a padding buffer status report (BSR).8. The apparatus according to claim 6, wherein the LCP priority of the first MAC CE is lower than an LCP priority of a second media access control service data unit (MAC SDU), and the second MAC SDU comprises data of a logical channel.9. The apparatus according to claim 6, wherein the programming further comprises instructions to:receive first indication information from the network device, wherein the first indication information indicates the communications apparatus to report the channel quality information.10. The apparatus according to claim 6, wherein the communications apparatus has a capability of reporting the channel quality information.
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