Method and device for establishing radio resource control connection

Patent metadata

Field	Value
Publication number	US-11064557-B2
Application number	US-201616069385-A
Country	US
Kind code	B2
Filing date	Mar 30, 2016
Priority date	Mar 30, 2016
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

Provided are a method and device for establishing a radio resource control (RRC) connection. The method includes: a relay terminal device receiving a first access stratum data packet sent by a remote terminal device, wherein the first access stratum data packet carries a device tag of the remote terminal device and RRC connection request information; the relay terminal device generating a second access stratum data packet on the basis of the first access stratum data packet; the relay terminal device sending the second access stratum data packet to a network device; the relay terminal device receiving a third access stratum data packet sent by the network device, wherein the third access stratum data packet carries the device tag of the remote terminal device and information for establishing an RRC connection; the relay terminal device generating a fourth access stratum data packet on the basis of the third access stratum data packet; and the relay terminal device sending the fourth access stratum data packet to the remote terminal device. The invention thereby allows a terminal device outside a coverage of a network device to generate an RRC connection.

First claim

The invention claimed is:

1. A relay terminal apparatus for establishing a Radio Resource Control (RRC) connection, the apparatus being applied in a communication system comprising a remote terminal device, the apparatus and a network device, the remote terminal device communicating with the apparatus based on a first communication protocol, and the apparatus communicating with the network device based on a second communication protocol, the apparatus comprising a transceiver, a processor and a memory storing instructions that, when executed by the processor, cause the processor to perform following operations comprising:
receiving, through the transceiver, a first access-stratum data packet sent from the remote terminal device according to the first communication protocol, the first access-stratum data packet being generated through encapsulating, by the remote terminal device, an RRC connection establishment request message to be sent to the network device, wherein the first access-stratum data packet contains a device identifier of the remote terminal device;
generating a second access-stratum data packet according to the first access-stratum data packet, wherein the second access-stratum data packet contains the device identifier of the remote terminal device;
sending, through the transceiver, the second access-stratum data packet to the network device according to the second communication protocol;
receiving, through the transceiver, a third access-stratum data packet sent from the network device according to the second communication protocol, the third access-stratum data packet being generated through encapsulating, by the network device, an RRC connection establishment message to be sent to the remote terminal device, wherein the RRC connection establishment message is generated by the network device according to the device identifier of the remote terminal device and the RRC connection establishment request message, and the third access-stratum data packet contains the device identifier of the remote terminal device;
generating a fourth access-stratum data packet according to the third access-stratum data packet, wherein the fourth access-stratum data packet contains the device identifier of the remote terminal device; and
sending, through the transceiver, the fourth access-stratum data packet to the remote terminal device according to the first communication protocol,
wherein sending, through the transceiver, the second access-stratum data packet to the network device according to the second communication protocol comprises:
(a) acquiring first mapping relationship information, the first mapping relationship information being configured to indicate a one-to-one mapping relationship between a plurality of data volume intervals and a plurality of uplink channels, wherein each of the data volume intervals comprises at least one data volume;
determining a first uplink channel according to a data volume interval to which a data volume of the second access-stratum data packet belongs and the first mapping relationship information, wherein the first uplink channel corresponds to the data volume interval to which the data volume of the second access-stratum data packet belongs;
sending, through the transceiver, a resource request message to the network device through the first uplink channel;
receiving, through the transceiver, first scheduling information sent from the network device, the first scheduling information being configured to indicate a first transmission resource and a magnitude of the first transmission resource being determined by the network device according to the first uplink channel and the first mapping relationship information; and
sending, through the transceiver, the second access-stratum data packet to the network device through the first transmission resource according to the second communication protocol;
or,
(b) acquiring second mapping relationship information, the second mapping relationship information being configured to indicate a one-to-one mapping relationship between a plurality of data volume intervals and a plurality of preambles, wherein each of tire data volume intervals comprises at least one data volume;
determining a first preamble according to a data volume interval to which a data volume of the second access-stratum data packet belongs and the second mapping relationship information, wherein the first preamble corresponds to the data volume interval to which the data volume of the second access-stratum data packet belongs;
sending, through the transceiver, the first preamble to the network device;
receiving, through the transceiver, second scheduling information sent from the network device, the second scheduling information being configured to indicate a second transmission resource and a magnitude of the second transmission resource being determined by the network device according to the first preamble and the second mapping relationship information; and
sending, through the transceiver, the second access-stratum data packet to the network device through the second transmission resource according to the second communication protocol.

2. The relay terminal apparatus according to claim 1 , wherein the device identifier of the remote terminal device is encapsulated in the first access-stratum data packet by the remote terminal device in Layer 2 (L2), the device identifier of the remote terminal device is encapsulated in the third access-stratum data packet by the network device in L2, and
the processor is further configured to acquire the device identifier of the remote terminal device from the first access-stratum data packet in L2;
the processor is further configured to encapsulate the device identifier of the remote terminal device in the second access-stratum data packet in L2;
the processor is further configured to acquire the device identifier of the remote terminal device from the third access-stratum data packet in L2; and
the processor is further configured to encapsulate the device identifier of the remote terminal device in the fourth access-stratum data packet in L2.

3. The relay terminal apparatus according to claim 1 , wherein the device identifier of the remote terminal device is encapsulated in the first access-stratum data packet by the remote terminal device in an adaptive layer, and the device identifier of the remote terminal device is encapsulated in the third access-stratum data packet by the network device in the adaptive layer, or
wherein the device identifier of the remote terminal device is encapsulated in the first access-stratum data packet by the remote terminal device in an RRC layer, and the device identifier of the remote terminal device is encapsulated in the third access-stratum data packet by the network device in the RRC layer.

4. The relay terminal apparatus according to claim 1 , wherein the device identifier of the remote terminal device is encapsulated in the first access-stratum data packet by the remote terminal device in the adaptive layer, the device identifier of the remote terminal device is encapsulated in the third access-stratum data packet by the network device in L2, and
the processor is further configured to acquire the device identifier of the remote terminal device from the first access-stratum data packet in an adaptive layer;
the processor is further configured to encapsulate the device identifier of the remote terminal device in the second access-stratum data packet in L2;
the processor is further configured to acquire the device identifier of the remote terminal device from the third access-stratum data packet in L2; and
the processor is further configured to encapsulate the device identifier of the remote terminal device in the fourth access-stratum data packet in the adaptive layer.

5. The rel

Assignees

• Guangdong Oppo Mobile Telecommunications Corp Ltd

Inventors

• Feng Bin

Classifications

• H04W76/27 Primary

  Transitions between radio resource control [RRC] states · CPC title

• H04W76/12

  Setup of transport tunnels · CPC title

• H04W92/10

  between terminal device and access point, i.e. wireless air interface · CPC title

• H04W88/04

  adapted for relaying to or from another terminal or user · CPC title

• H04W88/06

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title