Uplink transmission main carrier switching and its control method, device, base station and ue

Abstract

The present invention discloses an uplink transmission primary carrier switch and its control method, device, base station and user equipment, so that the UE's uplink transmission primary carrier is switched between a plurality of different cells that provide services for the UE, and the uplink of the user equipment is enhanced. The transmission flexibility of the transmission main carrier takes into account the transmission power and the transmission requirements of UE services. The method for controlling switching of the main carrier for uplink transmission includes: determining the transmission resources of the set of cells configured for the user equipment UE to provide services for the UE, including configuration resources of uplink transmission carriers of multiple cells, so as to realize the The main uplink transmission carrier of the UE is switched between uplink transmission carriers corresponding to different cells; and the UE is notified of the transmission resources of the set of cells.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a method, device, base station and user equipment for uplink transmission main carrier switching and control thereof. Background technique [0002] With the continuous expansion of Long Term Evolution (LTE) network coverage and the continuous development of LTE technology, the capacity of traditional macro cell coverage will be difficult to meet with the increase in the number of users and bandwidth requirements. Especially in some areas where users are relatively dense, simple macro coverage cannot meet user traffic requirements, and there will be blind spots in the homogeneous coverage method, which will affect the use of users. Therefore, LTE introduces a heterogeneous network, which makes the form of networking more flexible. At the same time, it also proposes the concept of small cells. Small cells usually have smaller coverage and lower transmission pow...

AI Technical Summary

Problems solved by technology

Since the distance between the UE and the transmission point of the macro cell is usually greater than the distance between the UE and the transmission point of the small cell network, if the UE performs carrier aggregation transmission, when the macro cell is configured as the PCell of the UE, the user's uplink transmission carrier can only be performed through the PCell Transmission, the transmission power is high and it will cause great interference to other users in the cell; when a small cell is configured as the PCell of the UE, due to the small coverage of the small cell, the UE needs to perform frequent cell switching when moving, and the service transmission during the switching process It will be interrupted, which will have a great impact on performance, and will also increase the signaling load of the core network

However, in the prior art, when performing cell handover, the UE’s uplink transmission carrier and downlink transmission carrier are switched between cells at the same time, and only the UE’s uplink transmission carrier cannot be switched between cells, so it is impossible to take into account the transmission advantages of different cells

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