# US 12,604,346 B2 · Connection management solution to support unicast and groupcast communication over sidelink for eV2X

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- Number: US 12,604,346 B2
- Document ID: US12604346B2
- Status: Granted
- Kind: B2
- Application number: 17/250,917
- Filed: 2019-09-26
- Published: 2021-12-23
- Granted: 2026-04-14
- Earliest claimed: 2018-09-27
- Assignees: Apple Inc.
- Applicants: Apple Inc.
- Inventors: Ansab Ali; Kyeongin Jeong; Sangeetha L. Bangolae; Youn Hyoung Heo
- Web page: https://patentgrep.com/patent/US12604346B2

## CPC

- H04W 8/005: {Discovery of network devices, e.g. terminals}
- H04W 76/10: Connection setup
- H04W 4/08: User group management
- H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W 76/14: Direct-mode setup
- H04W 92/18: between terminal devices
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

An apparatus of a first user equipment (UE) comprises one or more baseband processors to generate a message to indicate to a second UE that the first UE intends to establish a new radio (NR) sidelink connection for enhanced vehicle-to-everything (eV2X) services, and to process a response from the second UE regarding the message. The apparatus can include a memory to store the message.

## Claims

### Claim 1

A processor of a first user equipment (UE) configured to perform operations, the operations comprising:
transmitting a radio resource control (RRC) message to a second UE, the RRC message comprising an indication that the first UE intends to establish a new radio (NR) sidelink connection for a vehicle-to-everything (V2X) service, wherein the indication is an RRC information element (IE) comprising at least quality of service (QoS) related parameters for the NR sidelink connection, a source ID for the first UE, a destination ID for the second UE, a V2X service ID for the V2X service and security related information for the 5G NR sidelink comprising one or more security keys;
receiving a response to the RRC message from the second UE; and
transmitting keep alive signaling (KAS) to the second UE, wherein the KAS comprises at least one of i) an updated QoS related parameter, ii) an updated source ID for the first UE, or iii) an updated destination ID for the second UE.

### Claim 2 (depends on 1)

The processor of claim 1, wherein the NR sidelink connection is configured for a unicast communication mode.

### Claim 3 (depends on 1)

The processor of claim 1, wherein the NR sidelink connection is configured for a groupcast communication mode.

### Claim 4 (depends on 1)

The processor of claim 1, wherein the RRC message is configured for Proximity Services (ProSe) signaling over the NR sidelink.

### Claim 5 (depends on 4)

The processor of claim 4, wherein the QoS related parameters include a list of ProSe per-packet priority (PPPP) and ProSe per-packet reliability (PPPR).

### Claim 6 (depends on 5)

The processor of claim 5, wherein the source ID for the first UE is a first layer 2 ID and the destination ID for the second UE is a second layer 2 ID.

### Claim 7 (depends on 6)

The processor of claim 6, wherein an upper layer ensures that a source ID for each V2X service ID is defined uniquely.

### Claim 8 (depends on 1)

The processor of claim 1, wherein the response to the RRC message is a connection establishment accept message.

### Claim 9 (depends on 1)

The processor of claim 1, wherein the KAS further comprises at least two of i) an updated QoS related parameter, ii) an updated source ID for the first UE, or iii) an updated destination ID for the second UE.

### Claim 10

A first user equipment (UE), comprising:
a transceiver configured to communicate with a network; and
a processor communicatively coupled to the transceiver and configured to perform operations, the operations comprising:
generating a radio resource control (RRC) message for a second UE comprising an indication that the first UE intends to establish a new radio (NR) sidelink connection for a vehicle-to-everything (V2X) service, wherein the indication is an RRC information element (IE) comprising at least quality of service (QoS) related parameters for the NR sidelink connection, a source ID for the first UE, a destination ID for the second UE, a V2X service ID for the V2X service and security related information for the 5G NR sidelink comprising one or more security keys;
processing a response to the RRC message from the second UE; and
generating keep alive signaling (KAS) for the second UE, wherein the KAS comprises at least one of i) an updated QoS related parameter, ii) an updated source ID for the first UE, or iii) an updated destination ID for the second UE.

### Claim 11 (depends on 10)

The first UE of claim 10, wherein the NR sidelink connection is configured for a unicast communication mode.

### Claim 12 (depends on 10)

The first UE of claim 10, wherein the NR sidelink connection is configured for a groupcast communication mode.

### Claim 13 (depends on 10)

The first UE of claim 10, wherein the RRC message is configured for Proximity Services (ProSe) signaling over the NR sidelink.

### Claim 14 (depends on 13)

The first UE of claim 13, wherein the QoS related parameters include a list of ProSe per-packet priority (PPPP) and ProSe per-packet reliability (PPPR).

### Claim 15 (depends on 14)

The first UE of claim 14, wherein the source identity for the first UE is a first layer 2 ID and the destination identity for the second UE is a second layer 2 ID.

### Claim 16 (depends on 15)

The first UE of claim 15, wherein an upper layer ensures that a source ID for each V2X service ID is defined uniquely.

### Claim 17 (depends on 10)

The first UE of claim 10, wherein the response to the RRC message is a connection establishment accept message.

### Claim 18 (depends on 10)

The first UE of claim 10, wherein the KAS further comprises at least two of i) an updated QoS related parameter, ii) an updated source ID for the first UE, or iii) an updated destination ID for the second UE.

### Claim 19

A method performed by a first user equipment (UE), comprising:
transmitting a radio resource control (RRC) message to a second UE, the RRC message comprising an indication that the first UE intends to establish a new radio (NR) sidelink connection for a vehicle-to-everything (V2X) service, wherein the indication is an RRC information element (IE) comprising at least quality of service (QOS) related parameters for the NR sidelink connection, a source ID for the first UE, a destination ID for the second UE, a V2X service ID for the V2X service and security related information for the 5G NR sidelink comprising one or more security keys;
receiving a response to the RRC message from the second UE; and
transmitting keep alive signaling (KAS) to the second UE, wherein the KAS comprises at least one of i) an updated QoS related parameter, ii) an updated source ID for the first UE, or iii) an updated destination ID for the second UE.

### Claim 20 (depends on 19)

The method of claim 19, wherein the NR sidelink connection is configured for a unicast communication mode or a groupcast communication mode.