Method and system for granting physical uplink channel power for space division multiplexing users

Abstract

The invention discloses a method and a system for performing physical uplink channel power authorization on a space division multiplexing user. The method comprises the following steps of: while allocating physical uplink channel authorized power to the space division multiplexing user using a high-speed uplink data access service, confirming space division multiplexing authorized power according to a difference value between the routing loss from the space division multiplexing user to an adjacent space division multiplexing antenna and the routing loss from the space division multiplexing user to a service antenna. According to the method, uplink same-frequency interference under a space division multiplexing scene can be effectively controlled, real-time practical interference measurement can be utilized to optimize and adjust the authorized power, and an uplink data transmission rate of a base station HSUPA (High Speed Uplink Packet Access) can be utmost increased under the condition of reasonably controlling the uplink interference of a time slot of an E-PUCH (Enhanced-Physical Uplink Channel) of the space division multiplexing antenna.

Description

Technical field [0001] The invention relates to a high-speed uplink data access (HighSpeed ​​Uplink Packet Access, HSUPA) service in a distributed antenna system of a mobile communication system, and in particular to a method and system for authorizing physical uplink channel power for space division multiplexing users. Background technique [0002] The third generation of mobile communication systems such as Wideband Code Division Multiple Access (WCDMA) system and Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) are in R6 The version introduces HSUPA service, which greatly improves the air interface transmission capacity of uplink data. Which involves enhanced dedicated channel (Enhanced-Dedicated Channel, E-DCH) and E-DCH physical uplink channel (E-DCH-Physical Uplink Channel, E-PUCH), E-PUCH is used to carry the uplink of HSUPA users data. The base station sends power resource-related information (PRRI) to HSUPA users through the E-DCH absolute grant chann...

AI Technical Summary

Problems solved by technology

For this kind of distributed antenna base station with multiple antennas, it is easy to implement Space Division Multiple Access (SDMA) in the base station, that is, to use the same frequency resource to transmit different data in different antenna coverage areas, similar to Frequency reuse is performed between different base stations in the mobile cellular network to improve spectrum utilization, but it also brings interference problems, that is, same-frequency interference between multiplexed antennas or between multiplexed base stations

[0005] Under the distributed antenna base station, the E-PUCH of the HSUPA user is space-division multiplexed, that is, the same E-PUCH resource is used to transmit different uplink data in different antenna coverage areas, which can greatly increase the uplink data transmission rate of the base station. However, as mentioned above, it will cause uplink co-channel interference between the antennas of space division multiplexing in the base station in the time slot where the E-PUCH is located.

[0006] In non-spatial multiplexing scenarios, the base station can limit the PRRI by referring to the SNPL reported by the HSUPA user, thereby constraining the transmit power of the user's uplink E-PUCH, thereby controlling the interference to adjacent base stations, but in the distributed antenna base station In the E-PUCH space division multiplexing scenario, how to control the interference between adjacent antennas, there is no corresponding solution in the existing standards

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