# US 2019/0174486 A1 · Service transmission method, device, and system

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- Number: US 2019/0174486 A1
- Document ID: US20190174486A1
- Status: Published application
- Kind: A1
- Application number: 16/251,969
- Filed: 2019-01-18
- Published: 2019-06-06
- Earliest claimed: 2012-07-20
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Li CHAI; Bo LIN; Liangliang ZHANG
- Web page: https://patentgrep.com/patent/US20190174486A1

## CPC

- H04W 72/27: between access points
- H04L 5/0032: {Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation}
- H04W 28/0967: {Quality of Service [QoS] parameters}
- H04W 28/16: Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W 88/08: Access point devices
- H04W 92/20: between access points
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A service transmission method is provided. A first base station, which establishes an RRC connection with a UE, sends a request message to a second base station which is at least one of base stations serving the UE, where the request message includes service information, where the service information includes QoS information of a service and/or configuration information of an RB, and the request message instructs the second base station to perform resource configuration according to service information. The first base station sends a configuration message to the UE, where the configuration message includes configuration list information of the RB and/or cell information of the offload base station.

## Claims

### Claim 1

A method, comprising:
sending, by a first base station, a request message to a second base station, wherein the request message comprises configuration information comprising information of a radio bearer (RB) and information indicating that a service transmitted by the first base station to a terminal device and a service transmitted by the second base station to the terminal device are the same, wherein the first base station establishes a radio resource control (RRC) connection with the terminal device, and the second base station is a serving base station of the terminal device;
in response to the request message, receiving, by the first base station from the second base station, a response message;
in response to the response message, sending, by the first base station, a configuration message to the terminal device, wherein the configuration message comprises a configuration list information comprising information of the RB for use by the terminal device to configure the RB; and
sending, by the first base station, data of the service of the terminal device to the second base station for use by the second base station to send the data to the terminal device, and sending, by the first base station, the data of the service of the terminal device to the terminal device.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
determining, by the first base station, an allocation policy of redundancy version numbers, wherein the allocation policy indicates:
a redundancy version number used by a cell that participates in offload and belongs to the second base station and a redundancy version number used by a cell that participates in offload and belongs to the first base station, or
a redundancy version number used by a resource for sending data of the service by a cell that participates in offload and belongs to the second base station and a redundancy version number used by a resource for sending data of the service by a cell that participates in offload and belongs to the first base station; and
sending, by the first base station, the allocation policy of redundancy version numbers to the terminal device.

### Claim 3 (depends on 1)

The method of claim 1, wherein the request message further comprises RB-based data offload information or packet-based data offload information, wherein:
when the request message further comprises the RB-based data offload information, the configuration information of the RB comprises: configuration information of a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, and a physical layer; and
when the request message further comprises the packet-based data offload information, the configuration information of the RB comprises: configuration information of an RLC layer, a MAC layer, and a physical layer, and the configuration information of the RB does not comprise information of a packet data convergence protocol (PDCP) layer.

### Claim 4

A first base station, comprising:
a processor; and
a transceiver coupled with the processor and configured to:
send a request message to a second base station, wherein the request message comprises configuration information comprising information of a radio bearer (RB) and information indicating that a service transmitted by the first base station to a terminal device and a service transmitted by the second base station to the terminal device are the same, wherein the first base station establishes a radio resource control (RRC) connection with the terminal device, and the second base station is a serving base station of the terminal device,
in response to the request message, receive, from the second base station, a response message,
in response to the response message, send a configuration message to the terminal device, wherein the configuration message comprises a configuration list information comprising information of the RB for use by the terminal device to configure the RB, and
send data of the service of the terminal device to the second base station for use by the second base station to send the data to the terminal device, and send the data of the service of the terminal device to the terminal device.

### Claim 5 (depends on 4)

The first base station of claim 4, wherein:
the processor is configured to determine an allocation policy of redundancy version numbers, wherein the allocation policy indicates:
a redundancy version number used by a cell that participates in offload and belongs to the second base station and a redundancy version number used by a cell that participates in offload and belongs to the first base station, or
a redundancy version number used by a resource for sending data of the service by a cell that participates in offload and belongs to the second base station and a redundancy version number used by a resource for sending data of the service by a cell that participates in offload and belongs to the first base station; and
the transceiver is further configured to send the allocation policy of redundancy version numbers to the terminal device.

### Claim 6 (depends on 4)

The first base station of claim 4, wherein the request message further comprises RB-based data offload information or packet-based data offload information, wherein:
when the request message further comprises the RB-based data offload information, the configuration information of the RB comprises: configuration information of a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, and a physical layer; and
when the request message further comprises the packet-based data offload information, the configuration information of the RB comprises: configuration information of an RLC layer, a MAC layer, and a physical layer, and the configuration information of the RB does not comprise information of a packet data convergence protocol (PDCP) layer.

### Claim 7

A communication system, comprising a first base station and a second base station, wherein
the first base station is configured to:
send a request message to a second base station, wherein the request message comprises configuration information comprising configuration of a radio bearer (RB) and information indicating that a service transmitted by the first base station to a terminal device and a service transmitted by the second base station to the terminal device are the same, wherein the first base station establishes a radio resource control (RRC) connection with the terminal device, and the second base station is a serving base station of the terminal device,
in response to the request message, receive, from the second base station, a response message,
in response to the response message, send a configuration message to the terminal device, wherein the configuration message comprises a configuration list information comprising information of the RB for use by the terminal device to configure the RB, and
send data of the service of the terminal device to the second base station for use by the second base station to send the data to the terminal device, and send the data of the service of the terminal device to the terminal device; and
wherein the second base station is configured to:
receive the request message from the first base station;
send the response message to the first base station, and
establish the RB for the service based on the configuration of the RB.

### Claim 8 (depends on 7)

The communication system of claim 7, wherein the first base station is further configured to:
determine an allocation policy of redundancy version numbers, wherein the allocation policy indicates:
a redundancy version number used by a cell that participates in offload and belongs to the second base station and a redundancy version number used by a cell that participates in offload and belongs to the first base station, or a redundancy version number used by a resource for sending data of the service by a cell that participates in offload and belongs to the second base station and a redundancy version number used by a resource for sending data of the service by a cell that participates in offload and belongs to the first base station; and
send the allocation policy of redundancy version numbers to the terminal device.

### Claim 9 (depends on 7)

The communication system of claim 7, wherein the request message further comprises RB-based data offload information or packet-based data offload information, wherein:
when the request message further comprises the RB-based data offload information, the configuration information of the RB comprises: configuration information of a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a media access control (MAC) layer, and a physical layer; and
when the request message further comprises the packet-based data offload information, the configuration information of the RB comprises: configuration information of an RLC layer, a MAC layer, and a physical layer, and the configuration information of the RB does not comprise information of a packet data convergence protocol (PDCP) layer.