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A kind of rlc shunt transmission method and system

A transmission method and data flow technology, applied in network traffic/resource management, wireless communication, electrical components, etc., can solve problems such as RLC disorder, complex processing, and affecting UE downlink data throughput, so as to improve downlink rate and efficiency , Improve the effect of downlink data throughput

Active Publication Date: 2017-09-29
SAM ELECTRICAL EQUIP NANTONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, when data is sent from the two systems to the UE, the 3G and 4G systems will inevitably affect the serial number of the radio link layer (RLC) data received by the UE due to the different air interface capabilities and changes in the air interface environment quality. If you use the traditional RLC module and fill in the serial number, it will inevitably bring a lot of RLC disorder and retransmission, which will affect the actual downlink data throughput of the UE, which will greatly reduce the downlink rate and efficiency of the carrier aggregation scenario. Moreover, 4G RLC layer and 3G RLC layer mechanisms are somewhat different (for example, 4G RLC supports re-segmentation), so sharing one RLC module will be more complicated in processing

Method used

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  • A kind of rlc shunt transmission method and system
  • A kind of rlc shunt transmission method and system
  • A kind of rlc shunt transmission method and system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0110] In this embodiment, data scheduling is performed according to the principle of first-come first-served according to capacity allocation.

[0111] First-come, first-served distribution according to ability is the most common way of distribution. Since the feedback speed of the 4G air interface transmit capability is higher than that of 3G (4G is 1ms, 3G is 2ms), so when the PDCP layer receives the data, first check the 4G air interface transmit capability and the amount of data that has not yet been sent in the 4G RLC module , their difference is the amount of data that can still be sent in this scheduling, send the data corresponding to this part of the data amount to the 4G RLC, and then query the 3G air interface sendability and the unsent data amount in the 3GRLC module in the same way , their difference is the amount of data that can be sent by 3G in this scheduling, and this part of data is sent to the corresponding RLC module of 3G for processing.

[0112] Figu...

Embodiment 2

[0121] In this embodiment, data distribution is performed according to a TCP connection or a unified attribute.

[0122] Sending without prioritization may lead to data disorder at the TCP layer. Therefore, in this embodiment, PDCP allocates data according to certain rules, such as service type priority, to make up for this problem. Generally, data packets of the same TCP flow have some same attributes, so we can assign data packets to different RLC modules based on this.

[0123] Since the throughput of 4G services is generally higher than that of 3G services, in general, high-priority data or service types with relatively large traffic can be delivered on the 4G RLC, while low-priority data or service types with relatively low traffic The service can be placed in the 3G RLC for delivery, and a corresponding TCP connection data generally belongs to the same service type or priority, so the order of the TCP connection data can be guaranteed.

[0124] Figure 8 It is a schema...

Embodiment 3

[0140] This embodiment relates to a hybrid dynamic allocation mode.

[0141] In order to ensure that the bandwidth of 4G and 3G can be fully utilized, and ensure that the data in the same TCP stream can be delivered in order, we can think that users must establish more TCP connections. If it is downloading, one thread corresponds to one For TCP connection, if it is a business such as Internet access, a web page will also correspond to many TCP connections. Therefore, the polling method can be used. For all PDCP services, if the port number of the TCP protocol cannot be detected, it will be put into the 4G port number uniformly. RLC, if it can be detected that it is a TCP protocol, it will be allocated in turn in sequence, and the data packets with the same port number will be sent to the 4G RLC and 3G RLC modules in turn. For example, if the TCP port number of the first PDCP data packet is found to be 500 , put it into 4GRLC, the TCP port number of the next PDCP packet is 600,...

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Abstract

The invention discloses an RLC offload transmission method, comprising: the PDCP module of the main anchor point schedules the data to be sent, and transfers the data to be sent to the 3G RLC module and / or the 4G RLC module for processing; the 3G RLC module and the The 4G RLC module performs independent data processing through different RLC modules, and sends the processed data to NodeB and eNB respectively; eNB and NodeB respectively send data from 4G RLC module and 3G RLC module to UE. The invention also correspondingly discloses an RLC shunt transmission system. The present invention uses two independent RLC streams to transmit downlink data, so the downlink data throughput of the UE can be improved, and the downlink rate and efficiency of the carrier aggregation scene can be improved.

Description

technical field [0001] The invention relates to digital mobile communication technology, in particular to a radio link layer (RLC) shunt transmission method and system. Background technique [0002] In the Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access) network, the Universal Terrestrial Radio Access Network (UTRAN, Universal Terrestrial Radio Access Network) includes a radio network controller (RNC, Radio Network Controller) and a base station (NodeB) Two basic network elements, commonly known as 3G network. In a Long-Term Evolution (LTE, Long Time Evolution) network, an evolved universal terrestrial radio access network E-UTRAN includes an evolved base station eNodeB (eNB), which is a basic network element, commonly known as a 4G network. [0003] With the development of WCDMA network, High Speed ​​Downlink Packet Access (HSDPA, High Speed ​​Downlink Packet Access), High Speed ​​Uplink Packet Access (HSUPA, High Speed ​​Uplink Packet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/06H04W28/10
CPCH04W92/045
Inventor 黄侃杨立吕应权
Owner SAM ELECTRICAL EQUIP NANTONG