Data sending method and device, data receiving method and device, storage medium, sending end and receiving end

A technology of a data sending method and a data receiving method, which is applied in the field of communication, can solve problems such as inability to map, affect frequency domain and time domain diversity gain, and not support PDCP replication function, so as to achieve the effect of improving PDCP and expanding usage scenarios

Active Publication Date: 2019-08-20
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In Release 15 (Rel-15), it is supported to map two logical channels (Logical Channel, LCH) used for the PDCP replication function to different cells respectively. However, since one cell can only One subband is active, so it is not possible to map the two logical channels used for the PDCP replication function to different subbands in the same cell, that is, it does not support the PDCP replication function in a cell
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  • Data sending method and device, data receiving method and device, storage medium, sending end and receiving end
  • Data sending method and device, data receiving method and device, storage medium, sending end and receiving end
  • Data sending method and device, data receiving method and device, storage medium, sending end and receiving end

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[0055] In the two new technologies of 5G: PDCP replication function and subband, the base station (gNB) can configure multiple subbands for each cell of the user terminal (User Equipment, UE), which can be understood as each subband corresponds to a specific transmission format (numerology), where the numerology defined by the current standard includes two parameters: Cyclic Prefix (CP) length and subcarrier spacing. But for R15, for each cell of the UE, only one subband can be active at any time. When the active subband is switched from one subband to another subband, gNB is required for the UE. Send an explicit subband activation instruction command, or after the implicit deactivation time (timer) of the UE expires, the UE starts from the current downlink (Down link, DL) BWP or downlink-uplink (Down link–Up Link subband) Pair (BWP pair) fall back to the default DL BWP / DL-UL BWP pair.

[0056] In the 15th version of the protocol (Release 15, Rel-15), it supports the mapping of ...

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Abstract

The invention discloses a data sending method and device, a data receiving method and device, a storage medium, a sending end and a receiving end, and the data sending method comprises the steps: determining an activation instruction which is used for indicating to activate or deactivate a PDCP copy function; when the activation instruction indicates that the PDCP replication function is activated, copying a PDCP data packet through a transmitting end PDCP and transmitting to a receiving end through a first transmitting end logic channel corresponding to a first transmitting end RLC entity, asecond transmitting end logic channel corresponding to a second transmitting end RLC entity and two groups of different sub-bands in the same cell; wherein the first sending end logic channel and thesecond sending end logic channel are respectively mapped to two groups of different sub-bands in the same cell. According to the scheme provided by the invention, the diversity gain in the frequency domain and the time domain can be obtained, the use scene of the PDCP copying function is expanded, and the flexibility of the application of the PDCP copying function is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data sending method and device, a data receiving method and device, a storage medium, a sending end, and a receiving end. Background technique [0002] With the continuous development of wireless technology, 3GPP introduced a new wireless technology (New Radio accesstechnology, NR) to cope with the demand for larger data volume and the demand for smaller transmission delay. This technology is also called the fifth generation of mobile communication. Technology 5G. [0003] In 5G, two new technologies are introduced, Packet Data Convergence Protocol (Packet Data Convergence Protocol, PDCP) duplication (Duplication) function and sub-band (Band Width Part, BWP), wherein the sub-band is also called sub-bandwidth. [0004] Specifically, the introduction of the PDCP replication function can improve the reliability of Ultra Reliable Low Latency Communication (Ultra Rel...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04L5/00
CPCH04L5/0053H04W72/23
Inventor 王婷婷
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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