METHOD AND APPARATUS FOR CONFIGURING MULTIPLE COMMON CONTROL CHANNELS IN WIRELESS COMMUNICATION SYSTEM

• US 20200137776A1
• Filed: 06/26/2018
• Published: 04/30/2020
• Est. Priority Date: 06/27/2017
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: LEE, Youngdae, YI, Seungjune, KIM, Sangwon, LEE, Sunyoung
• Granted Patent: US 11,178,677 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04W 28/0278 using buffer status reports dynamic wireless traffic scheduling definition H04W72/12
• CPC Class Codes: H04W 28/065 using assembly or disassembly of packets
• CPC Class Codes: H04W 48/14 using user query or user detection
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 72/569 of the traffic information
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

A method and apparatus for configuring multiple common control channels (CCCHs) in a wireless communication system, specifically in a new radio access technology (NR) system, is provided. A user equipment (UE) configures a first CCCH and a second CCCH. The first CCCH has higher priority than the second CCCH in a logical channel prioritization (LCP) procedure. Upon detecting that data is available for the first CCCH and the second CCCH, the UE constructs a media access control (MAC) protocol data unit (PDU) including the data, based on a priority of the first CCCH and a priority of the second CCCH, and transmits the MAC PDU to a network.

Claims

1. A method for configuring multiple common control channels (CCCHs) by a user equipment (UE) in a wireless communication system, the method comprising:

configuring, by the UE, a first CCCH and a second CCCH;

detecting, by the UE, that data is available for the first CCCH and the second CCCH;

constructing, by the UE, a media access control (MAC) protocol data unit (PDU) including the data, based on a priority of the first CCCH and a priority of the second CCCH; and

transmitting, by the UE, the MAC PDU to a network.

2. The method of claim 1, wherein the priority of the first CCCH is higher than the priority of the second CCCH in a logical channel prioritization (LCP) procedure.

3. The method of claim 1, wherein the priority of the second CCCH is lower than a priority of a first set of MAC control elements (CEs) in a LCP procedure, and

wherein the priority of the second CCCH is higher than a priority of a second set of MAC CEs in the LCP procedure.

4. The method of claim 3, wherein the first set of MAC CEs includes at least one of a buffer status reporting (BSR) MAC CE or a power headroom reporting (PHR) MAC CE.

5. The method of claim 1, wherein the second CCCH is configured only for the UL.

6. The method of claim 1, wherein the constructing the MAC PDU comprises:

occupying, by the UE, a payload of the MAC PDU with a radio link control (RLC) PDU from the first CCCH;

occupying, by the UE, a header of the MAC PDU with a logical channel identifier (LCD) of the first CCCH; and

if there is a remaining part of the payload of the MAC PDU and data from the second CCCH can be included in the payload of the MAC PDU, occupying, by the UE, the remaining part of the payload of the MAC PDU with a RLC PDU from the second CCCH and a LCID of the second CCCH.

7. The method of claim 6, wherein the LCID of the first CCCH and the LCID of the second CCCH have different values.

8. The method of claim 6, further comprising occupying, by the UE, the remaining part of the payload of the MAC PDU with a MAC CE indicating the second CCCH, if there is the remaining part of the payload of the MAC PDU and data from the second CCCH cannot be included in the payload of the MAC PDU.

9. The method of claim 8, wherein the MAC CE indicating the second CCCH is a BSR MAC CE.

10. The method of claim 1, wherein the configuring the first CCCH and the second CCCH is performed by a radio resource control (RRC) layer of the UE, and

wherein the constructing the MAC PDU and the transmitting the MAC PDU is performed by a MAC sublayer of the UE.

11. The method of claim 10, further comprising submitting, by the RRC layer of the UE, a system information (SI) request message to a lower layer of the UE over the second CCCH.

12. The method of claim 11, further comprising transmitting, by the MAC sublayer of the UE, a random access preamble with a random access preamble identifier (RAPID) which is mapped to SI request.

13. The method of claim 1, wherein the MAC PDU is included in MSG3 of a random access procedure.

14. The method of claim 1, wherein the network is a gNB in a new radio access technology (NR).

16. The method of claim 1, wherein the UE is in communication with at least one of a mobile device, a network, and/or autonomous vehicles other than the UE.

15. A user equipment (UE) in a wireless communication system, the UE comprising:

a memory;

a transceiver; and

a processor, operably coupled to the memory and the transceiver, that;

configures a first common control channel (CCCH) and a second CCCH;

detects that data is available for the first CCCH and the second CCCH;

constructs a media access control (MAC) protocol data unit (PDU) including the data, based on a priority of the first CCCH and a priority of the second CCCH; and

controls the transceiver to transmit the MAC PDU to a network.