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Method and device for superimposing coding

A technology of superposition coding and signal superposition, which is applied in the field of superposition coding, can solve problems such as waste of wireless resources, and achieve the effect of improving utilization

Active Publication Date: 2011-03-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1) Existing signal superposition techniques are all applied to the case where the transmitting end is a single transmitting site, and the receiving end is multiple receiving sites or multiple connections of one receiving site. At this time, the transmitting information is uniformly modulated by the transmitting site; while for In the case of multiple transmitting sites, there is no corresponding solution for constellation superposition in the current technology;
[0007] 2) In the process of persistent scheduling, in order to save MAP (image) message overhead, the modulation mode of the persistent scheduling block is generally not modified, so when the channel quality improves, the use of a lower-order modulation mode will lead to waste of wireless resources

Method used

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  • Method and device for superimposing coding

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Embodiment 1

[0048] Such as figure 2 As shown, the superposition coding method provided by the embodiment of the present invention includes:

[0049] 201. Acquire transmission parameter information of a superimposed signal to be sent by a base station (Base Station, BS); wherein, the transmission parameter information may be transmission power information or transmission frequency information.

[0050] 202. Adjust the transmission parameter of the superimposed signal of the local station according to the transmission parameter information of the superimposed signal.

[0051] The transmission parameters include the transmission power and transmission frequency of the signal; the superimposed signal that the site needs to send and the superimposed signal that the base station needs to send are only after the site and the base station have negotiated transmission parameters such as transmission power. That is, only after the transmission parameters of the superimposed signal of the local st...

Embodiment 2

[0064] In some scenarios, it is necessary to send the data of BS and RS (or FAP) to one or more MSs at the same time. At this time, if the data of BS and RS (or FAP) can be superimposed and encoded, network resources can be greatly saved , to achieve better system performance.

[0065] For this reason, the embodiment of the present invention provides a method for superposition coding, and, in the embodiment of the present invention, the superimposed signal is a signal sent by the BS to the MS, and the superimposed signal is a signal sent by the RS (or FAP) to the MS; Such as Figure 4 As shown, the superposition coding method provided by the embodiment of the present invention includes the following steps:

[0066] 401. Configure channels between the BS and the RS (or FAP).

[0067] In the embodiment of the present invention, when the BS performs channel configuration, the reference signal R in the superimposed signal sent by the RS (or FAP) needs to be RS Reserve empty sub...

Embodiment 3

[0095] In the existing wireless communication network, in some areas that cannot be covered by the macro network, it is necessary to set up a Femto access point (FAP) to provide a small range of wireless coverage; the MS can connect to the FAP through the air interface, and then access the network through the FAP macro network. However, under the existing mechanism, when a mobile terminal (Mobile Station, MS) enters the FAP coverage area, it cannot normally perceive the coverage area of ​​the FAP; The band periodically searches for a preamble signal.

[0096]To this end, the embodiment of the present invention provides a superposition coding method, which can simultaneously transmit the preamble signal of the FAP at the resource carrying the preamble signal in the signal frame delivered by the BS by using the superposition coding method. Specifically, the superposition coding method provided by the embodiment of the present invention, such as Figure 9 shown, including the f...

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Abstract

The embodiment of the invention discloses a method and device for superimposing coding, relating to the wireless communication field. In the method and device for superimposing the coding, constellation superimposing coding can be realized aiming at a plurality of transmission stations. The method for superimposing the coding provided by the embodiment of the invention comprises the following steps: obtaining transmission parameter information of an superimposed signal needed to be transmitted by a base station; adjusting the transmission parameters of the superimposed signal in the station according to the transmission parameter information of the superimposed signal; and transmitting the superimposed signal according to the adjusted transmission parameters to carry out constellation superimposing coding on the superimposed signal and the superimposed signal transmitted by the base station. The method and device for superimposing the coding is suitable for the constellation superimposing coding with a plurality of the transmission stations.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for superposition coding. Background technique [0002] Constellation superposition coding (Superposition Coding) is a characteristic technology of Ultra High Data Rate (UHDR), which can effectively improve system performance. [0003] The existing technology uses superposition codes to improve the throughput of wireless communication systems, that is, the transmitting end can superimpose two or more information streams in the modulation space to send to multiple receiving sites or multiple connections of one receiving site, while The receiving station obtains different information streams according to different demodulation rules. Specifically, when using constellation superposition coding, the transmitting end may multiplex the same frequency resource for multiple users, but adopt different transmit powers. [0004] Such as figure 1 As shown,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W28/18H04L27/34
Inventor 黄罡李波杰梁文亮时代
Owner HUAWEI TECH CO LTD
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