Distributed data transmission method and device based on um RLC protocol, UM RLC entity
A technology of distributed data and transmission devices, applied in transmission systems, wireless network protocols, wireless communications, etc., can solve the problems of prolonged sorting, high complexity, confusing RLC function division, etc., and achieve the effect of good scalability.
Active Publication Date: 2019-11-26
CHINA MOBILE COMM LTD RES INST +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This scheme has the following problems: 1. It is necessary to add a sorting function to data packets in the PDCP protocol. This method confuses the functional division of RLC and PDCP, and destroys the principle of functional division of the protocol stack that only RLC is responsible for data packet sorting; 2. 1. It is necessary to add a complete set of sequential sending and receiving reordering mechanisms to the PDCP protocol, which greatly changes the PDCP protocol stack; 3. In the current protocol, PDCP does not need to process data in non-acknowledged mode (UM, Transparent Mode) , if PDCP supports the sorting function of data packets, in order to complete the protocol function, it is necessary to increase the processing of UM mode
4. When PDCP sorts through the serial number (SN, Serial Number) of PDCP PDU, it is possible to sort PDCP PDUs sent by multiple RLCs, resulting in high complexity and prolonged sorting.
5. When reestablishment (reestablishment), because the time for data and control information between RLC and PDCP is too long after non-ideal transmission, a new delay is added to the reestablishment process
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.
[0027] For the distributed architecture of 5G access network, and the existing problems in the current PDCP / RLC segmentation and reconstruction. The embodiment of the present invention provides a distributed UM RLC protocol data transmission method in the wireless mobile network. The method does not make any changes to the PDCP function, but adds the sorting function of the SDU cluster of the UM RLC, and the current UM RLC is still used in the SUD cluster. The sorting function ensures full compatibility with the current UM RLC protocol functions.
[0028] figure 1 It is a schematic diagram of the UM RLC entity data transmission protocol stack architecture of the embodiment of the present invention, such as figure 1 As shown, the Centralized Transmission buffer and Centralize...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The embodiment of the invention discloses a distributed data transmission method and device based on an UM RLC (Unacknowledged Mode Radio Link Control) protocol and an UM RLC entity. A centralized transmission cache and a centralized service data unit reassembly unit SDU are set in the UM RLC entity. The method comprises the steps that after the centralized transmission cache receives UM RLC service data units, the centralized transmission cache sends the UM RLC SDUs to corresponding branches of RL in a form of UM RLC SDU clusters. According to the technical scheme provided by the embodiment of the invention, an existing UM RLC protocol stack function is compatible, the delay resulting from discontinuous transmission is compatible, the relatively high expandability is achieved, and a greatnumber of users can be rapidly supported.
Description
technical field [0001] The present invention relates to wireless data distribution transmission technology, in particular to a distributed data transmission method and device based on UM RLC protocol, and UM RLC entity. Background technique [0002] As a complete entity, the unacknowledged mode radio link control (UM RLC, Unacknowledged Mode Radio Link Control) protocol entity in the radio link layer control (RLC, Radio Link Control) protocol performs packet sending and receiving processing. The 5G network architecture proposes a distributed architecture for the access network. The air interface protocol stacks run on different distributed entities, and the transmission between distributed entities is non-ideal. Taking RCC-RRS (RCC: Radio CloudCenter, RRS: Remote Radio System) distributed architecture as an example, the transmission between RCC-RRS is non-ideal transmission, so it is necessary to consider the division and reconstruction of protocol stack functions under non-...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04W80/02
CPCH04L69/324H04W80/02
Inventor 孙军帅王莹莹陈锋黄学艳陈卓易芝玲
Owner CHINA MOBILE COMM LTD RES INST