E-puch power compensation method and device in hsupa system
A power compensation and equipment technology, applied in power management, wireless communication, electrical components, etc., can solve the problems of PowerControlGap not suitable for PowerControlGap, unable to meet the rapid fading of network signals, affecting the correctness of E-PUCH data, etc., to improve the success rate Effect
Inactive Publication Date: 2018-04-24
MARVELL ASIA PTE LTD
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Problems solved by technology
[0011] If the UE has a signal mutation within PowerControlGap, for example, the user of the UE enters an area with a poor channel environment (such as in an elevator), due to the delay in the closed-loop power control, it cannot meet the rapid fading changes of the network signal
When this happens, there will be problems in the UE's uplink data transmission, which will affect the correctness of the UE's E-PUCH data transmission.
This situation may occur when the PowerControlGap configured on the network side is inappropriate (for example, the PowerControlGap is long), and the UE suddenly enters shadow fading
Method used
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[0029] In the first aspect, the embodiment of the present invention provides an E-PUCH power compensation method in the HSUPA system. The following will refer to figure 1 The E-PUCH power compensation method according to the embodiment of the present invention will be described in detail.
[0030] Such as figure 1As shown, first in step S101 it is determined whether E-PUCH data needs to be sent in the current subframe. If it is determined that the E-PUCH data needs to be sent in the current subframe, then step S102 is executed to judge whether the time interval between sending the E-PUCH data this time and sending the E-PUCH data last time is less than the PowerControlGap of the E-PUCH. If the time interval is less than the PowerControlGap of the E-PUCH, the signal quality change of the beacon channel is detected (step S103). Since the signal quality of the beacon channel can be characterized by the received signal code power (RSCP), it can be calculated by calculating the ...
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Embodiments of the present invention provide an E-PUCH power compensation method and device in an HSUPA system. The method includes: determining whether the E-PUCH data needs to be sent in the current subframe; A power control interval of the PUCH; when the time interval is less than the power control interval of the E-PUCH, detecting a signal quality change of the beacon channel; and determining a transmission power reference value of the E-PUCH based on the detected signal quality change of the beacon channel. According to the E-PUCH power compensation method and device according to the embodiments of the present invention, by detecting the signal quality change of the beacon channel, it is judged whether a signal mutation has occurred in the area where the UE is currently located, and when a signal mutation occurs, the previous transmission The difference between the received signal code power of the E-PUCH data and the current received signal code power compensates the transmission power of the E-PUCH, thereby improving the success rate of sending uplink service data via the E-PUCH.
Description
[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 61 / 624,686, filed April 16, 2012, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0003] The embodiments of the present invention relate to the field of wireless communication, and in particular to the E-PUCH power compensation method and equipment in the HSUPA system. Background technique [0004] In the TD-SCDMA system, use HSUPA (High Speed Uplink Packet Access, High Speed Uplink Packet Access) technology to provide uplink high-speed services. E-PUCH (E-DCH Physical Uplink Channel, E-DCH Physical Uplink Channel) is defined in HSUPA to send uplink service data. [0005] E-PUCH uses traditional closed-loop power control and open-loop power control combined method for power control. Specifically, the initial transmission power setting of the E-PUCH is based on an open-loop power control scheme, and th...
Claims
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IPC IPC(8): H04W52/24H04W24/08
Inventor 李强付志亮孙栋
Owner MARVELL ASIA PTE LTD