Processing method and system of demodulate reference signal, base station, user equipment

• US 20120195390A1
• Filed: 03/25/2010
• Published: 08/02/2012
• Est. Priority Date: 09/24/2009
• Status: Abandoned Application

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Wang, Yanwen, Jiang, Jing, Liu, Wenhao, Zhang, Qinghong
• Application Number:
  US13/259,041
• Publication Number:
  US 20120195390A1
• Time in Patent Office: Days
• US Class Current: 375/260
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04W 48/12 using downlink control channel

Abstract

The present disclosure discloses a processing method and system, configuring method, and demodulating method of demodulate reference signal, a base station and a UE. The base station configures common reference signals on control symbols and user-dedicated reference signals on service symbols; the UE demodulates control information by using the common reference signals and demodulates service data and broadcast data by using the user-dedicated reference signals, wherein the control symbols are OFDM symbols carrying the control information, and the service symbols are OFDM symbols without carrying the control information. With the application of the present disclosure, the purpose of reducing the overhead of reference signals can be achieved.

Claims

1. A configuring method of demodulate reference signal, comprising:

configuring, by a base station, common reference signals on control symbols and user-dedicated reference signals on service symbols;

wherein the control symbols are Orthogonal Frequency Division Multiplexing (OFDM) symbols carrying control information, and the service symbols are OFDM symbols without carrying control information.

2. The method according to claim 1, further comprising:

making, by the base station, a control channel for transmitting the control information carried on the control symbols.

3. The method according to claim 1, wherein an interval between neighboring user-dedicated reference signals on a same sub-carrier is N OFDM symbols, wherein N is 4, 5, 6 or 7;

a minimal interval between user-dedicated reference signals on a same OFDM symbol or different OFDM symbols is M sub-carriers, wherein M=3 or 4.

4. The method according to claim 1, further comprising:

making, by the base station, a broadcast channel for transmitting broadcasting information and a service channel for transmitting service data carried on the service symbols.

5. The method according to claim 4, further comprising:

when configuring the user-dedicated reference signals on the service symbols, configuring a number of layers of the user-dedicated reference signals as same as a number of channel layers for transmitting the service data in the service channel to obtain layered user-dedicated reference signals; and

using the layered user-dedicated reference signals to demodulate the service data and the broadcast information.

6. The method according to claim 3, further comprising:

configuring, by the base station, a channel identifier for the broadcast channel, wherein the channel identifier can be scrambled by the base station.

7. The method according to claim 6, wherein the channel identifier is a radio network temporary identifier.

8. A demodulating method of demodulate reference signal, comprising:

demodulating, by a UE, control information by using common reference signals configured on control symbols, and demodulating service data and broadcast data by using user-dedicated reference signals configured on service symbols;

wherein the control symbols are OFDM symbols carrying control information and the service symbols are OFDM symbols without carrying control information.

9. The method according to claim 8, further comprising:

using, by the UE, a channel identifier of a broadcast channel to descramble broadcast information carried on the service symbols to receive the broadcast information.

10. A processing method of demodulate reference signal, comprising:

configuring, by a base station, common reference signals on control symbols and user-dedicated reference signals on service symbols;

demodulating, by a UE, control information by using the common reference signals and demodulating service data and broadcast data by using the user-dedicated reference signals;

wherein the control symbols are OFDM symbols carrying control information and the service symbols are OFDM symbols without carrying control information.

11. A base station, comprising:

a first configuration module for configuring common reference signals on control symbols;

a second configuration module for configuring user-dedicated reference signals on service symbols, and making a broadcast channel and a service channel carried on the service symbols, wherein the broadcast channel is configured to transmit broadcast information and the service channel is configured to transmit service data;

wherein the control symbols are OFDM symbols carrying control information and the service symbols are OFDM symbols without carrying control information.

12. The base station according to claim 11, wherein an interval between neighboring user-dedicated reference signals on a same sub-carrier is N OFDM symbols, wherein N=4, 5, 6 or 7;

a minimal interval between user-dedicated reference signals on a same OFDM symbol or different OFDM symbols is M sub-carriers, wherein M=3 or 4.

13. A UE, comprising:

a first processing module for demodulating control information by using common reference signals configured on control symbols;

a second processing module for demodulating service data and broadcast information by using user-dedicated reference signals configured on service symbols;

wherein the control symbols are OFDM symbols carrying control information and the service symbols are OFDM symbols without carrying control information.

14. A processing system of demodulate reference signal, comprising a base station and a UE,

wherein the base station is configured to configure common reference signals on control symbols and user-dedicated reference signals on service symbols, and the base station comprises:

a first configuration module for configuring the common reference signals on the control symbols;

a second configuration module for configuring the user-dedicated reference signals on the service symbols, and making a broadcast channel and a service channel carried on the service symbols;

the UE is configured to demodulate control information by using the common reference signals, and to demodulate service data and broadcast data by using the user-dedicated reference signals, and the UE comprises;

a first processing module for demodulating the control information by using the common reference signals configured on the control symbols;

a second processing module for demodulating the service data and broadcast information by using the user-dedicated reference signals configured on the service symbols;

wherein the control symbols are OFDM symbols carrying control information and the service symbols are OFDM symbols without carrying control information.