Scheduling method based on two-way link transmission

A scheduling method and bidirectional link technology, applied in transmission systems, digital transmission systems, error prevention/detection using the return channel, etc., can solve the rate, packet loss, and link re-establishment that affect the forward link service transmission and other issues to achieve the effect of guaranteeing bandwidth, transmission timeliness, and transmission performance

Inactive Publication Date: 2015-04-15
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as analyzed above, if the scheduler cannot recognize the RLC reverse feedback control packet and the TCP layer reverse acknowledgment packet, it cannot make a priority scheduling strategy for resource allocation and provide sufficient resource guarantee for reverse transmission. , once the reverse transmission is limited, it will greatly affect the transmission rate of the forward link business, which will seriously lead to link re-establishment or packet loss

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  • Scheduling method based on two-way link transmission
  • Scheduling method based on two-way link transmission
  • Scheduling method based on two-way link transmission

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Embodiment Construction

[0038]This application proposes a scheduling method based on two-way link transmission, through RLC and MAC cross-layer information interaction, two priority scheduling of RLC feedback confirmation packets and RLC ARQ retransmission packets are performed, ensuring the timeliness of RLC feedback and retransmission , to improve the transmission performance in RLC AM mode; in addition, there are three types of parallel operations, including the number of RLC forward SDU transmissions, the number of RLC forward SDU transmission bytes, and the RLC forward transmission timer. The transmission drives the reverse priority scheduling mechanism to ensure the transmission performance of high-level TCP connections. This application scheme gives scheduling priority and resource allocation priority guarantee to the reverse link in the two-way link transmission, so as to ensure the bandwidth and timeliness of data transmission in the reverse direction in the two-way transmission, and then gua...

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Abstract

The invention discloses a scheduling method based on two-way link transmission. The method comprises: a media access control (MAC) layer detecting and counting data volume of a service data unit (SDU) of a two-way transmission radio link control (RLC) layer in a driving feedback period; when statistic accumulated forward transmission RLC SDU data volume reaches a preset threshold, determining whether reversed transmitted RLC SDU data volume is larger than a preset driving reversed transmission data threshold in the driving feedback period, if yes, not performing reverse priority scheduling, and if not, updating corresponding statistic and performing reverse priority scheduling. The technical scheme can ensure bandwidth of reverse direction data transmission and transmission timeliness in two-way transmission, so as to improve performance of forward transmission.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a scheduling method based on bidirectional link transmission. Background technique [0002] In a wireless communication system, from the protocol level, data is transmitted layered through multiple protocol levels, and business data is transmitted from the application layer to form Transmission Control Protocol (TCP, Transmission Control Protocol) / User Datagram Protocol (UDP, User Datagram Protocol) packets, and then decomposed into Internet Protocol (IP) packets and transmitted to the access layer of the base station side through the core network wired link, first through the Packet Data Convergence Protocol (PDCP, Packet Data Convergence Protocol)) layer, through the IP packet header After compression and encryption, transfer to the radio link control (RLC, Radio Link Control) layer, perform segmentation and concatenation according to the transmissi...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H04L29/08H04L1/18H04L12/26
CPCH04W72/12
Inventor朱颖
OwnerPOTEVIO INFORMATION TECH CO LTD