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US 11,240,874 B2Granted
Data transmission method and device
AssigneeBeijing Xiaomi Mobile Software Co., Ltd.
InventorXiaowei Jiang
Life of this patent
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Abstract
A data transmission method includes: receiving a first indication message from a base station, the first indication message including first information indicating a PDCP packet duplication function and at least two transmission entities configured for a radio bearer (RB) by the base station; setting a transmission function corresponding to the RB as the PDCP packet duplication function according to the first indication message; setting a transmission entity corresponding to the RB according to the at least two transmission entities indicated in the first indication message; setting a present state of the PDCP packet duplication function, the present state including an active state and an inactive state; and performing data transmission according to the present state and the transmission entity.
Claims12
A method for data transmission, implemented by a terminal, the method comprising:
- receiving a first indication message from a base station, wherein the first indication message comprises first information indicating a Packet Data Convergence Protocol (PDCP) packet duplication function and at least two transmission entities configured for a radio bearer (RB) by the base station, wherein the at least two transmission entities comprise a primary radio link control (RLC) entity and a secondary RLC entity;
- setting a transmission function corresponding to the RB to be the PDCP packet duplication function according to the first indication message;
- setting a transmission entity corresponding to the RB according to the at least two transmission entities indicated in the first indication message;
- setting a present state of the PDCP packet duplication function, the present state being an inactive state;
- and
- performing data transmission according to the present state and the transmission entity,
- wherein the performing the data transmission according to the present state and the transmission entity comprises:
- when the RB is a newly established signaling radio bearer (SRB) or data radio bearer (DRB), performing the data transmission by use of the primary RLC entity;
- and
- when the RB is an SRB or DRB that has been established, performing at least one of:
- performing the data transmission by use of the primary RLC entity for data that is not delivered to an RLC layer and continuing the data transmission by use of the secondary RLC entity for data that has been delivered to the secondary RLC entity, or
- in an Unacknowledged Mode (UM), performing the data transmission by use of the primary RLC entity for data that is not delivered to the RLC layer.
9 more elements
A device for data transmission, comprising:
- a processor;
- and
- a memory storing instructions executable by the processor,
- wherein the processor is configured to:
- receive a first indication message from a base station, wherein the first indication message comprises first information indicating a Packet Data Convergence Protocol (PDCP) packet duplication function and at least two transmission entities configured for a radio bearer (RB) by the base station, wherein the at least two transmission entities comprise a primary radio link control (RLC) entity and a secondary RLC entity;
- set a transmission function corresponding to the RB to be the PDCP packet duplication function according to the first indication message;
- set a transmission entity corresponding to the RB according to the at least two transmission entities indicated in the first indication message;
- set a present state of the PDCP packet duplication function, the present state being an inactive state;
- and
- perform data transmission according to the present state and the transmission entity,
- wherein performing the data transmission according to the present state and the transmission entity comprises:
- when the RB is a newly established signaling radio bearer (SRB) or data radio bearer (DRB), performing the data transmission by use of the primary RLC entity;
- and
- when the RB is an SRB or DRB that has been established, performing at least one of:
- performing the data transmission by use of the primary RLC entity for data that is not delivered to an RLC layer and continuing the data transmission by use of the secondary RLC entity for data that has been delivered to the secondary RLC entity, or
- in an Unacknowledged Mode (UM), performing the data transmission by use of the primary RLC entity for data that is not delivered to the RLC layer.
13 more elements
A device for data transmission, comprising:
- a processor;
- and
- a memory storing instructions executable by the processor,
- wherein the processor is configured to:
- configure a Packet Data Convergence Protocol (PDCP) packet duplication function for a radio bearer (RB);
- configure at least two transmission entities configured to implement the PDCP packet duplication function, wherein the at least two transmission entities comprise a primary radio link control (RLC) entity and a secondary RLC entity;
- add first information into a first indication message, the first information indicating the PDCP packet duplication function and the at least two transmission entities;
- and
- send the first indication message to a terminal to enable the terminal to set a transmission function corresponding to the RB to be the PDCP packet duplication function according to the first indication message and set a transmission entity corresponding to the RB according to the at least two transmission entities indicated in the first indication message,
- wherein a present state of the PDCP packet duplication function is an inactive state;
- when the RB is a newly established signaling radio bearer (SRB) or data radio bearer (DRB), data transmission is performed by use of the primary RLC entity;
- and
- when the RB is an SRB or DRB that has been established, data transmission is performed by use of the primary RLC entity for data that is not delivered to an RLC layer and the data transmission is continued by use of the secondary RLC entity for data that has been delivered to the secondary RLC entity;
- or in an Unacknowledged Mode (UM), data transmission is performed by use of the primary RLC entity for data that is not delivered to the RLC layer.
11 more elements
Dependencies are inferred from the claim text.