Data transmission method and apparatus, and computer readable storage medium

Patent metadata

Field	Value
Publication number	US-12452929-B2
Application number	US-202318223753-A
Country	US
Kind code	B2
Filing date	Jul 19, 2023
Priority date	Aug 11, 2017
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

Provided are a data transmission method, apparatus and computer readable storage medium. The method includes: in a case where a terminal is in a connected state, receiving, by the terminal, a physical downlink control channel command sent by a base station, acquiring an non-competitive resource allocated to the terminal by the base station from the physical downlink control channel command, initiating a random access by using a random access preamble corresponding to the non-competitive resource; and receiving, by the terminal, a random access response sent by the base station, and in response to determining that the random access response carries indication information for simultaneously sending downlink data, receiving, by the terminal, the downlink data.

First claim

What is claimed is:

1. A data transmission method, comprising:
in a case where a terminal is in a connected state, receiving, by the terminal, a physical downlink control channel command sent by a base station, acquiring an non-competitive resource allocated to the terminal by the base station from the physical downlink control channel command, initiating a random access by using a random access preamble corresponding to the non-competitive resource; and
receiving, by the terminal, a random access response sent by the base station, and in response to determining that the random access response carries indication information for simultaneously sending downlink data, receiving, by the terminal, the downlink data;
wherein the method further comprises: in response to determining that the indication information indicates to carry a radio resource control (RRC) message at the time of sending a first request message, sending, by the terminal, the first request message carrying the RRC message to the base station;
in response to determining that the terminal fails to receive the random access response sent by the base station, determining, by the terminal, a random access failure and reinitiating a random access;
wherein reinitiating, by the terminal, the random access comprises: determining, by the terminal, to select one of a random access preamble for requesting an uplink data transmission resource or a random access preamble not for requesting an uplink data transmission resource to perform the random access according to at least one of: a number of random access failures, a serial number of each random access failure; a downlink measurement obtained by the terminal; a coverage level; or a number of repetitions;
in response to determining to select one of a random access preamble for requesting an uplink data transmission resource or a random access preamble not for requesting an uplink data transmission resource to perform the random access according to a number of repetitions, the number of repetitions is configured by the base station.

2. A non-transitory computer-readable storage medium, comprising stored programs, wherein the programs, when executed by a processor, perform the data transmission method of claim 1 .

3. A data transmission apparatus, disposed on a terminal and comprising a memory and a processor, wherein the memory stores a program which, when read and executed by the processor, causes the processor to:
in a case where the terminal is in a connected state, receive a physical downlink control channel command sent by a base station, acquire an non-competitive resource allocated to the terminal by the base station from the physical downlink control channel command, initiate a random access by using a random access preamble corresponding to the non-competitive resource;
receive a random access response sent by the base station, and in response to determining that the random access response carries indication information for simultaneously sending downlink data, receive the downlink data; and
in response to determining that the indication information indicates to carry a radio resource control (RRC) message at the time of sending a first request message, send the first request message carrying the RRC message to the base station;
in response to determining that the terminal fails to receive the random access response sent by the base station, determine a random access failure and reinitiate a random access;
wherein the processor is further configured to: determine to select one of a random access preamble for requesting an uplink data transmission resource or a random access preamble not for requesting an uplink data transmission resource to perform the random access according to at least one of: a number of random access failures, a serial number of each random access failure; a downlink measurement obtained by the terminal: a coverage level; or a number of repetitions;
in response to determining to select one of a random access preamble for requesting an uplink data transmission resource or a random access preamble not for requesting an uplink data transmission resource to perform the random access according to a number of repetitions, the number of repetitions is configured by the base station.

4. A data transmission method, comprising:
in a case where a terminal is in a connected state, sending, by a base station, a physical downlink control channel command to the terminal, the physical downlink control channel command carries a non-competitive resource allocated by the base station to the terminal; and
after receiving a random access initiated by the terminal using a random access preamble corresponding to the non-competing resource, sending, by the base station, a random access response to the terminal, and the random access response carries indication information for simultaneously sending downlink data, and sending the downlink data simultaneously;
wherein the method further comprises: in response to the indication information indicating to carry a radio resource control (RRC) message at the time of sending a first request message, receiving, by the base station, the first request message carrying the RRC message sent by the terminal;
in response to a determination that the random access response is not received by the terminal, a random access failure is determined, and a random access is reinitiated;
wherein the random access is reinitiated in following manner: determining to select one of a random access preamble for requesting an uplink data transmission resource or a random access preamble not for requesting an uplink data transmission resource to perform the random access according to at least one of: a number of random access failures, a serial number of each random access failure; a downlink measurement obtained by the terminal; a coverage level; or a number of repetitions;
in response to determining to select one of a random access preamble for requesting an uplink data transmission resource or a random access preamble not for requesting an uplink data transmission resource to perform the random access according to a number of repetitions, the number of repetitions is configured by the base station.

5. A data transmission apparatus, comprising:
one or more processors; and
a memory, which is configured to store one or more programs;
wherein the one or more programs are executed by the one or more processors to cause the one or more processors to implement the data transmission method of claim 4 .

Assignees

• Xian Zhongxing New Software Co Ltd

Inventors

• Lu Ting
• Dai Bo
• Sha Xiubin

Classifications

• H04W74/0838

  using contention-free random access [CFRA] · CPC title

• H04W74/0833 Primary

  Random access procedures, e.g. with 4-step access · CPC title

• H04W74/08

  Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) · CPC title

• H04W74/085

  collision avoidance · CPC title

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title