PUCCH resource allocation method in LTE-A

Abstract

The invention relates to a PUCCH resource allocation method in LTE-A. The method comprises the following steps: when a radio resource control layer allocates resources for user equipment by utilizing a field n1-PUCCH-AN-CS-List-r10 in signaling, for two same PUCCH List resources, positive sequence pairing and reverse sequence pairing two modes are utilized respectively to allocate a PUCCH 1B CS resource pair for the user equipment, wherein the PUCCH 1B CS resource represents PUCCH resources for dynamically service scheduling in an auxiliary cell; and when the user equipment carries out semi-persistent scheduling service, and the fields niPUCCH-AN-PersistentList and n1PUCCH-AN-PersistentListP1-r10 in the signaling are utilized to allocate resources for the user equipment, for the two same PUCCH List resources, the positive sequence pairing and reverse sequence pairing two modes are utilized respectively to allocate a semi-persistent scheduling PUCCH 1X resource pair for the user equipment. Through the technical scheme, the method can effectively utilize high-level signaling to carry out reasonable distribution on the PUCCH resources, so that PUCCH 1X resources can be reused between multiple users efficiently, and PUCCH resource utilization rate in LTE-A when adopting a PUCCH resource pair allocation mode is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular, to a method for configuring PUCCH resources in LTE-A. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution system) system, LTE-A (LTE-Advanced, advanced long-term evolution system) is an evolved version of LTE, in order to meet the LTE-A downlink peak speed of 1Gbps, uplink peak speed of 500Mbps requirements , it is necessary to provide a maximum transmission bandwidth of 100MHz, but due to the scarcity of continuous spectrum with such a large bandwidth, LTE-A proposes a carrier aggregation (Carrier Aggregation, CA) solution. The so-called carrier aggregation is to aggregate two or more carrier units (Component Carriers, CCs) together to support a maximum transmission bandwidth of 100 MHz. [0003] In the LTE system, PUCCH (Physical Uplink Control CHannel, physical uplink control channel) mainly carries SR (Schedule Request, scheduling ...

AI Technical Summary

Problems solved by technology

[0017] The second problem is that due to the PUCCH1B CS and PUCCH two-antenna port diversity transmission mechanism introduced in LTE-A, at most two PUCCH resources need to be allocated to one terminal, but not all terminals and all scenarios are fixedly allocated two PUCCH resources. PUCCH resources, according to different scenarios, UE can allocate one or two PUCCH resources

First, both solutions are equivalent to configuring a unique pair of available SPS configurations for the UE, so that even if the UE is not scheduled this time, the PUCCH resource position is still reserved, causing unnecessary waste; second , Scheme 1 does not use the flexible scheduling function of the PDCCH field, and Scheme 2 uses the function of the PDCCH field, but the actual allocation results and effects are the same, and no obvious benefits are introduced

Finally, these allocation schemes do not specifically consider how to efficiently use PUCCH resources when a single PUCCH resource and two PUCCH resources are configured for LTE-A.

Images