User equipment, base station, access base station and wireless link monitoring method

Abstract

The invention discloses user equipment, a base station, an access base station and a wireless link monitoring method. The user equipment comprises: a first receiving module used for receiving first indication information sent by a first base station, the first indication information comprising a time period required for the user equipment to initially request to access a second base station, or comprising a preset first maximum number of times of sending a random access scrambling code to the second base station when the user equipment initially requests to access the second base station; a first sending module used for sending a random access scrambling code to the second base station; and a first notification module used for notifying the first base station of the failure of the second base station cell group if the user equipment fails to access the second base station within the time period or if the number of times of sending the random access scrambling code to the second base station by the user equipment during initial access request is greater than the first maximum number of times. According to the invention, the efficiency of accessing the second base station by the userequipment is improved by limiting the access request time of the user equipment or the initial and subsequent access times of sending the random access scrambling codes.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a user equipment and a base station, an access base station and a wireless link monitoring method. Background technique [0002] With the development of the Long Term Evolution (LTE, Long Term Evolution) mobile communication system, in order to enable the evolved system to provide higher transmission rates and shorter transmission delays, the evolved system has gradually evolved into that two base stations simultaneously serve the user equipment ( UE, User Equipment) provides services. The first base station (MeNB, Macro eNodeB) can offload data to the UE through the primary cell (PSCell, Primary Secondary Cell) of the second base station, or the PSCell can directly obtain data from the core network and transmit the data to the UE. Before the UE communicates with the PSCell, the UE may need to initiate a random access process (RA, Random Access) to the PSCell. Aft...

AI Technical Summary

Problems solved by technology

In the prior art, the same maximum number of random access procedures is used for these two types of random access procedures. However, in practical applications, the success rate of the random access procedures initially initiated by the UE is often lower than the success rate of random access procedures initiated subsequently. , therefore, if the same maximum number of times is used, the success rate of the initial random access process initiated by the UE will be reduced, and eventually the UE's random access to the PSCell will fail, which is not conducive to the data transmission between the UE and the PSCell

[0004] In addition, in order to ensure that the quality of the wireless link with the PSCell meets the requirements of data transmission, the UE needs to perform wireless link monitoring on the wireless link of the PSCell. However, the trigger conditions for wireless link monitoring have not been specified in the prior art, resulting in The UE cannot grasp the time to start wireless link monitoring, which cannot reflect the essential function of wireless link monitoring

Images