Method for reporting user equipment capability information and apparatus

Patent metadata

Field	Value
Publication number	US-2019200212-A1
Application number	US-201916287958-A
Country	US
Kind code	A1
Filing date	Feb 27, 2019
Priority date	Aug 31, 2016
Publication date	Jun 27, 2019
Grant date	—

Abstract

A method for reporting UE capability information includes: obtaining, by user equipment (UE), UE capability information of the UE; when the size of the UE capability information exceeds the maximum tolerance that can be processed by the PDCP layer of the UE, splitting the UE capability information into at least two pieces of UE capability information, where each piece does not exceed the maximum tolerance that can be processed by the PDCP layer; and reporting at least one piece of the at least two pieces of UE capability information to a network side device. According to this method, the UE capability information is split on a UE side, and reported to the network side device for a plurality of times, so as to avoid an error caused when the UE capability information exceeds the maximum tolerance that can be processed by the PDCP layer, and ensure normal operating of a UE capability information reporting process.

First claim

What is claimed is:

1 . A method for reporting user equipment (UE) capability information, the method comprising:
obtaining, by a UE, UE capability information of the UE; determining whether a size of the UE capability information exceeds a maximum tolerance that can be processed by a Packet Data Convergence Protocol (PDCP) layer of the UE; when the size of the UE capability information exceeds the maximum tolerance that can be processed by the PDCP layer of the UE, splitting the UE capability information into at least two pieces of UE capability information, wherein each of the at least two pieces of UE capability information does not exceed the maximum tolerance that can be processed by the PDCP layer; and reporting at least one of the at least two pieces of UE capability information to a network side device.

2 . The method according to claim 1 , wherein before reporting at least one of the at least two pieces of UE capability information to a network side device, the method further comprises:
receiving, by the UE, a first request message that a UE capability needs to be reported, wherein the first request message is sent by the network side device and comprises a system broadcast message and a radio resource control (RRC) message.

3 . The method according to claim 1 , wherein splitting the UE capability information into at least two pieces of UE capability information comprises:
splitting the UE capability information according to a radio access technology (RAT) system division principle; or splitting the UE capability information according to UE capability importance; or splitting the UE capability information according to a protocol version sequence principle; or splitting the UE capability information according to a principle of a smallest quantity of times of reporting to the network side device.

4 . The method according to claim 1 , wherein after reporting at least one of the at least two pieces of UE capability information to a network side device, the method further comprises:
detecting, by the UE, whether a second request message fed back by the network side device is received; and when the second request message is received, sending, by the UE, at least another one of the at least two pieces of UE capability information to the network side device.

5 . The method according to claim 2 , wherein reporting at least one piece of the at least two pieces of UE capability information to a network side device comprises:
sorting the at least two pieces of UE capability information; and when the first request message carries a priority of reporting the UE capability information, reporting the at least two pieces of UE capability information to the network side device according to the priority.

6 . The method according to claim 1 , wherein reporting at least one piece of the at least two pieces of UE capability information to a network side device comprises:
receiving and buffering, by a radio link control (RLC) layer of the UE, the at least two pieces of UE capability information in a data packet form; segmenting and concatenating data packets of comprising the at least two pieces of UE capability information to form to-be-transmitted data packets; and reporting the to-be-transmitted data packets to the network side device by using a radio resource control (RRC) message.

7 . The method according to claim 1 , wherein each of the at least two pieces of UE capability information further comprise:
indication information for indicating any one of the following content: whether the UE has one or more remaining pieces of UE capability information, a quantity of times that one or more remaining pieces of UE capability information needs to be reported, or an order of currently reported pieces of UE capability information in all of the at least two pieces of UE capability information.

8 . User equipment (UE), comprising:
a receiver configured to obtain UE capability information of the UE; a processor configured to:
determine whether a size of the UE capability information exceeds a maximum tolerance that can be processed by a Packet Data Convergence Protocol (PDCP) layer of the UE, and
when the size of the UE capability information exceeds the maximum tolerance that can be processed by the PDCP layer of the UE, split the UE capability information into at least two pieces of UE capability information, wherein each piece of the at least two pieces of UE capability information does not exceed the maximum tolerance that can be processed by the PDCP layer; and
a transmitter configured to report at least one piece of the at least two pieces of UE capability information to a network side device.

9 . The UE according to claim 8 , wherein the receiver is further configured to:
receive a first request message that a UE capability needs to be reported, wherein the first request message is sent by the network side device and comprises a system broadcast message and a radio resource control (RRC) message.

10 . The UE according to claim 8 , wherein to split the UE capability information into at least two pieces of UE capability information, the processor is further configured to:
split the UE capability information according to a radio access technology (RAT) system division principle; or split the UE capability information according to UE capability importance; or split the UE capability information according to a protocol version sequence principle; or split the UE capability information according to a principle of a smallest quantity of times of reporting to the network side device.

11 . The UE according to claim 8 , wherein:
the processor is further configured to detect whether a second request message fed back by the network side device is received; and the transmitter is further configured to: when the second request message is received, send at least another piece of the at least two pieces of UE capability information to the network side device.

12 . The UE according to claim 8 , wherein:
the processor is further configured to:
split the UE capability information into detailed UE capability information and rough UE capability information corresponding to the detailed UE capability information, wherein the detailed UE capability information provides a reference to enable the network side device to configure a radio parameter for the UE, the rough UE capability information for instructing the network side device to send a third request message to the UE; and
the transmitter is further configured to:
report the rough UE capability information to the network side device, and when the third request message is received from the network side device based on the rough UE capability information being reported, send part or all of the detailed UE capability information corresponding to the rough UE capability information to the network side device.

13 . The UE according to claim 9 , wherein:
the processor is further configured to sort each of the at least two pieces of UE capability information; and the transmitter is further configured to:
when the first request message carries a priority of reporting, report the at least two pieces of UE capability information to the network side device according to the priority.

14 . The UE according to claim 8 , wherein a radio resource control (RRC) layer or the PDCP layer of the UE splits the UE capability information into the at least two pieces.

15 . The UE according to claim 8 , wherein:
the receiver is further configured to receive and buffer the at least two pieces of UE capability information in a data packet

Assignees

• Huawei Tech Co Ltd

Inventors

• Quan Wei
• Chen Bin
• Li Bingzhao
• Xu Bin
• Zhang Jian

Classifications

• H04W72/23

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

• H04W72/56

  based on priority criteria · CPC title

• H04W72/10

  Electricity · mapped topic

• H04W88/02

  Terminal devices · CPC title

• H04W8/183 Primary

  Processing at user equipment or user record carrier · CPC title