# US 8,570,985 B2 · Method, system and apparatus for processing uplink signals

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- Number: US 8,570,985 B2
- Document ID: US8570985B2
- Status: Granted
- Kind: B2
- Application number: 12/989,613
- Filed: 2009-04-24
- Published: 2011-02-24
- Granted: 2013-10-29
- Earliest claimed: 2008-04-25
- Assignees: China Academy of Telecommunications Technology
- Applicants: Shiqiang Suo; Libo Wang; Xueming Pan; Yu Ding
- Inventors: Shiqiang Suo; Libo Wang; Xueming Pan; Yu Ding
- Web page: https://patentgrep.com/patent/US8570985B2

## CPC

- H04W 74/004: {in the uplink, i.e. towards network}
- H04W 74/0833: Random access procedures, e.g. with 4-step access
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

The present invention discloses a method for processing uplink signal. In this method, when a random access channel of a cell where a user equipment (UE) locates is within an uplink pilot timeslot, the UE determining whether there is a conflict between the random access channel and time-frequency position of an uplink channel quality sounding pilot of the UE; and if there is a conflict, the uplink channel quality sounding pilot will not be transmitted by the UE within the uplink pilot timeslot. The present invention also discloses a system and apparatus for processing uplink signal. By applying the method, system and apparatus of the present invention, the interference to detection performance of the random access channel caused by the uplink channel quality sounding pilot will be avoided, thereby increasing the detection performance of the random access channel.

## Claims

### Claim 1

A method for processing uplink signal, comprising:
configuring, by a base station, random access channels for its underling cells and configuring an uplink channel quality sounding pilot for each user equipment (UE) within the underling cells, broadcasting configuration of the random access channels, and informing configuration of uplink channel quality sounding pilots to corresponding UEs;
when a random access channel of a cell where a UE locates is within an uplink pilot timeslot, the UE determining whether there is a conflict between the random access channel and time-frequency position of an uplink channel quality sounding pilot of the UE; and
if there is a conflict, the uplink channel quality sounding pilot will not be transmitted by the UE within the uplink pilot timeslot; and
determining, by the base station according to the configurations, the uplink pilot timeslot within which there is a conflict between the random access channel of the cell where the UE locates and the time-frequency position of the uplink channel quality sounding pilot of the UE, and merely detecting the random access channel within the determined uplink pilot timeslot.

### Claim 2 (depends on 1)

The method according to claim 1, further comprising:
if there is not a conflict, transmitting the uplink channel quality sounding pilot by the UE within the uplink pilot timeslot.

### Claim 3 (depends on 1)

The method according to claim 1, further comprising: if there is a conflict, transmitting the uplink channel quality sounding pilot by the UE at a next time-frequency position of the uplink channel quality sounding pilot.