Method and equipment for reducing false alarm of control channel

A technology of control channel and processing method, which is applied in the field of processing method and equipment for reducing false alarms of control channels, which can solve problems such as system signaling process influence, DCI false alarm, PDSCH error resolution and PUSCH error transmission, etc., to ensure reliable demodulation , reduce the probability of occurrence, and reduce the effect of the probability of false alarms on the control channel

Active Publication Date: 2015-07-08
HUAWEI TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the process of multiple blind detection attempts, due to randomness, the CRC may be detected correctly at the position where the PDCCH is not sent, resulting in a DCI false alarm, which in turn causes PDSCH error resolution or PUSCH error transmission, and will cause System signaling process impact

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  • Method and equipment for reducing false alarm of control channel
  • Method and equipment for reducing false alarm of control channel
  • Method and equipment for reducing false alarm of control channel

Examples

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Embodiment Construction

[0024] figure 1 It is a flowchart of an embodiment of the processing method for reducing control channel false alarms in the present invention, such as figure 1 As shown, the method of the present embodiment includes:

[0025] Step 101, receiving a soft bit sequence of a control channel.

[0026] In this embodiment, specifically, the control channel may be one of the following control channels: a PDCCH channel in an LTE system; a high speed uplink packet access (High Speed ​​Uplink Packet Access; HSPA for short) channel Control channel; control channel in HSPA, Wideband Code Division Multiple Access (WCDMA for short) and Time Division-Synchronous Code Division Multiple Access (TD-SCDMA for short), code Control channel in Code Division Multiple Access (CDMA) 2000EVDO; control channel in Worldwide Interoperability for Microwave Access (Wimax). It should be noted that as long as the control channel adopts CRC as check, the technical solution of the present invention can be ado...

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Abstract

The invention provides a method and equipment for reducing false alarm of a control channel. The method comprises the following steps of: receiving a soft bit sequence through a control channel; calculating a metric value according to the soft bit sequence; comparing the metric value with a preset metric value threshold; and when the metric value is greater than or equal to the metric value threshold, decoding the soft bit sequence. By the method and equipment for reducing the false alarm of the control channel, the soft bit sequence which possibly causes the false alarm of the control channel is filtered out, the probability of the false alarm of the control channel is effectively reduced, reliable demodulation of a downlink traffic channel and accurate transmission of an uplink traffic channel are guaranteed, and the false alarm of the channel is reduced.

Description

technical field [0001] The invention relates to communication technology, in particular to a processing method and equipment for reducing false alarms of control channels. Background technique [0002] In a high-speed wireless communication system, generally there is a control channel, which is used to indicate content such as scheduling information of a traffic channel. For the LTE system, information such as MCS and resource allocation of PDSCH and PUSCH is given through DCI, and on the PDCCH physical channel carried by DCI, the resource unit occupied by the PDCCH physical channel is called Control Channel Element (Control Channel Element; abbreviation: CCE). In addition, on the UE side, whether there is DCI of a certain format in the current subframe and the number of occupied CCEs are unknown, so it needs to be determined through blind detection attempts. [0003] In the prior art, the control channel often uses CRC as an indication of whether the detection is successf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04W24/02
Inventor 吴江高振兴江长国刘华斌
Owner HUAWEI TECH CO LTD
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