Transmission method and system for sending plurality of uplink scheduling requests based on FDM (frequency division multiplexing) mode

Abstract

The invention relates to a transmission method and system for sending a plurality of uplink scheduling requests based on an FDM (frequency division multiplexing) mode. The transmission method comprises the following steps: S1, a first connection point device of user equipment receives RRC (radio resource control) signaling; S2, the user equipment generates the uplink scheduling requests and sends the uplink scheduling requests to the first connection point device based on the FDM transmission mode in the same sub-frame according to frequency displacement; S3 other uplink scheduling requests are transmitted to a corresponding second connection point device respectively; S4, if one connection point device agrees to perform corresponding uplink data transmission , the connection point device sends a scheduling authorization instruction to the user equipment; S5, the user equipment sends uplink data to the corresponding connection point device according to the scheduling authorization instruction. Compared with the prior art, control channel resources of other connection point devices except the first connection point device can be saved and the time delay of initial data transmission can be reduced.

Description

technical field [0001] The present invention relates to an uplink scheduling request transmission technology, in particular to a transmission method and system for sending multiple uplink scheduling requests based on FDM. Background technique [0002] In the 3GPP LTE-Advanced (LTE-A) system, Release 12 defines the Small Cell Enhancements (SCE) scenario, in which the backhaul link between the macro cell and the micro cell is not ideal, That is, the non-ideal backhaul link has finite capacity and non-zero delay. This small cell enhancement scenario mainly faces three major challenges: mobile robustness, throughput enhancement per user, and increased signaling overhead due to frequent handovers. [0003] The dual connectivity mode is a new concept proposed to solve these problems, that is, a designated user equipment is provided with radio resources by two network nodes at the same time, a master base station (MeNB) and a slave base station (SeNB). In the RRC connected state,...

AI Technical Summary

Problems solved by technology

However, the biggest difference between the two is that the scheduling of different carrier components for carrier aggregation is located at the same site, and the scheduling can realize dynamic coordination; while the two sites of dual connectivity are connected through non-ideal backhaul links, and the scheduling of the two sites is relative. Independent, no dynamic coordination

Images