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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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AI Technical Summary

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
[0006] However, in the 16th version of the protocol (Release 16, Rel-16) and its subsequent versions, multiple subbands can be active at the same time in a cell, and if the solution in the prior art is continued, it will not support Implementing the PDCP replication function in a cell will affect the diversity gain in the frequency domain and the time domain, and affect the flexibility of the PDCP replication function application

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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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Embodiment Construction

[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 (UserEquipment, 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: a cyclic prefix (Cyclic Prefix, CP) length and a subcarrier spacing. But for R15, only one subband can be active at any time point for each cell of the UE. When the active subband is switched from a certain subband to another subband, the gNB needs to download the subband for the UE. Send an explicit subband activation indication command, or, after the UE's implicit deactivation time (timer) expires, the UE starts from the current downlink (Down link, DL) BWP or downlink-uplink (Down link–Up Link subband The pair (BWP pair) falls back to the default DL BWP / DL-UL BWP pair.

[0056] In Release 15 (Rel-15), it is su...

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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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