Method for setting power bias and carrying out system dispatching

Abstract

The invention discloses a installing power offset and scheduling system method, which comprises the following steps: according to the power of rapid descending sharing channel HS-DSCH and HS-PDSCH channel spread-spectrum code N distributed by system to make sure the sending power of every code; according to sending power of public pilot channel CPICH distributed by system and certained sending power of every code to install the corresponding CQI measuring power bias. The invention can make every code channel send data in the same power to reduce indeterminacy and complexity distributed by sending power and spread-spectrum code resource of HSDPA user; the sending power of HSDPA user is kept constant at certain time to reduce the effect of HSDPA sending power wave and CQI measuring; the system can distribute power and spread-spectrum code resource., which controls the resource between R99 and HSDPA user.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for setting power bias and performing system scheduling. Background technique [0002] HSDPA (High Speed ​​Downlink Packet Access; High Speed ​​Downlink Packet Access) technology is a key technology for WCDMA (Wide-band Code Division Multiple Access; Wideband Code Division Multiple Access) system to improve the downlink peak transmission rate and system spectrum efficiency. [0003] The uplink of the HSDPA technology passes through the HS-DPCCH channel (High Speed-dedicated physical control channel; high-speed dedicated physical control channel), feedback information about whether the UE accurately receives downlink data and the currently received CQI (Channel QuaIity Indicator; channel quality indicator) information; The downlink adopts the time division and code division multiplexing method of HS-PDSCH (High Speed ​​Physical Downlink Shared Channel, high speed physical downli...

AI Technical Summary

Problems solved by technology

During system scheduling, based on the current CQI mapping relationship, if the CQI transmission format is not adjusted, it is difficult to ensure that the sum of the transmission power of each scheduled user is equal to the total power of the allocated HS-DSCH channel, and the sum of the code channels occupied by each user is equal to The number of allocated HS-PDSCH code channels, so the transmission format of the user needs to be adjusted. However, when the transmission format of the currently scheduled user is adjusted to a certain extent, although the power and code resources allocated by the system can be fully utilized to a certain extent, the Based on the different reception performance of different terminals, there are many uncertainties in system adjustment, so it is difficult to ensure that the transmission format and power selected for scheduling users meet the best reception quality of their current channel (for example, to ensure a 10% block error rate)

[0019] If the appropriate transmission format is selected directly based on the CQI value reported by the UE, the subframes allocated for each scheduled user may have remaining code resources or power resources, which is a waste of system resources

Moreover, with the change of the service ratio in the cell, the HSDPA power of each subframe also changes, which increases the fluctuation of the downlink load, thus affecting the reception of the downlink channel, and bringing dynamic code resources and power resource management between HSDPA and R99 users. difficulty

[0020] When the UE receives a 16QAM signal, each subframe must measure the relative received power of each HS-PDSCH channel in real time, and the relative power offset needs to be measured in real time, which needs to store the HS-PDSCH demodulation information, so it will bring data storage delay, And to a certain extent, it increases the complexity of UE implementation, and inaccurate measurement will also cause demodulation performance loss

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