Signal transmission processing method and apparatus and distributed base station

• US 9,300,403 B2
• Filed: 01/22/2013
• Issued: 03/29/2016
• Est. Priority Date: 07/27/2009
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Tan, Jingxin, Xiao, Xin, Huang, Zhiyong, Li, Chaoyang, Zhang, Binghua, Du, Wei, Li, Hanguo
• Primary Examiner(s): Sam, Phirin
• Application Number:
  US13/747,127
• Publication Number:
  US 20130129353A1
• Time in Patent Office: 1,162 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 10/25759 Details of the reception of RF signal or the optical conversion before the optical fibre
• CPC Class Codes: H04B 10/27 Arrangements for networking
• CPC Class Codes: H04B 10/50 Transmitters
• CPC Class Codes: H04J 14/00 Optical multiplex systems
• CPC Class Codes: H04J 14/028 WDM bus architectures
• CPC Class Codes: H04J 14/0282 WDM tree architectures
• CPC Class Codes: H04J 14/0286 WDM hierarchical architectures
• CPC Class Codes: H04J 3/1652 Optical Transport Network [OTN]
• CPC Class Codes: H04J 3/1664 carrying hybrid payloads, e.g. different types of packets or carrying frames and packets in the paylaod

Abstract

The disclosures provide a method and apparatus for transmitting and receiving interface signals of a distributed base station. At least one channel of Common Public Radio Interface (CPRI) signals of a distributed base station are encapsulated into optical transport unit x (OTUx) signals in a frame structure of OTUx by adopting Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity and wherein the OTUx is adopted for providing a bandwidth required by the at least one channel of CPRI signals, and then the OTUx signals that bear the at least one channel of CPRI signals are sent.

Claims

1. A method for transmitting an interface signal of a distributed base station through an optical transport network, comprising:

encapsulating at least one Common Public Radio Interface (CPRI) signal of the distributed base station into an optical transport unit x (OTUx) signal by adopting a Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity of the OTUx signal; and

sending the OTUx signal.

2. An apparatus for transmitting an interface signal of a distributed base station, comprising:

a processor and a non-transitory computer readable medium having a plurality of computer executable instructions stored thereon which, when executed by the processor, cause the processor to encapsulate at least one Common Public Radio Interface (CPRI) signal of the distributed base station into an optical transport unit x (OTUx) signal by adopting a Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity of the OTUx signal; and

a transmitter configured to send the OTUx signal.

3. A method for receiving an interface signal of a distributed base station through an optical transport network, comprising:

receiving an optical transport unit x (OTUx) signal, wherein the OTUx signal is multiplexed with at least one Common Public Radio Interface (CPRI) signal of the distributed base station through a Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity of the OTUx signal;

de-encapsulating the OTUx signal to obtain the at least one CPRI signal.

4. The method of claim 3, wherein a signal clock for each CPRI signal is obtained according to a first in first out (FIFO) status of a FIFO memory.

5. An apparatus for receiving an interface signal of a distributed base station through an optical transport network, comprising:

a receiver configured to receive an optical transport unit x (OTUx) signal, wherein the OTUx signal bears at least one Common Public Radio Interface (CPRI) signal of the distributed base station encapsulated by adopting a Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity of the OTUx signal;

a processor and a non-transitory computer readable medium having a plurality of computer executable instructions stored thereon which, when executed by the processor, cause the processor to demultiplex the OTUx signal to obtain the at least one CPRI signal.

6. The apparatus of claim 5, wherein a signal clock for each CPRI signal is obtained according to a first in first out (FIFO) status of a FIFO memory.

7. An apparatus for transmitting an interface signal of a distributed base station, comprising:

a first optical transport network (OTN) processing unit, coupled to a Base Band Unit (BBU) of the distributed base station; and

a second OTN processing unit, coupled to the first OTN processing unit and to at least one Remote Radio Unit (RRU) of the distributed base station;

wherein the first OTN processing unit is configured to encapsulate at least one Common Public Radio Interface (CPRI) signal from the BBU into an optical transport unit x (OTUx) signal, and send the OTUx signal to the second OTN processing unit;

wherein the at least one CPRI signal from the BBU is encapsulated into the OTUx signal by adopting a Generic Mapping Procedure (GMP) mapping scheme,

wherein the x represents a transmission capacity of the OTUx signal;

wherein the second OTN processing unit is configured to de-encapsulate the OTUx signal to obtain the at least one CPRI signal from the BBU, and send the obtained at least one CPRI signal from the BBU to the at least one RRU.

8. The apparatus of claim 7, wherein a signal clock for each CPRI signal from the BBU is obtained according to a first in first out (FIFO) status of a FIFO memory.

9. The apparatus of claim 7, wherein:

the second OTN processing unit is further configured to encapsulate at least one Common Public Radio Interface (CPRI) signal from the at least one RRU into an optical transport unit y (OTUy) signal by adopting a GMP scheme, and send the OTUy signal to the first OTN processing unit, wherein the y represents a transmission capacity of the OTUy signal;

the first OTN processing unit is further configured to de-encapsulate the OTUy signal to obtain the at least one CPRI signal from the at least one RRU, and send the obtained at least one CPRI signal from the at least one RRU to the BBU.

10. A method for transmitting interface signals of a distributed base station through an optical transport network, comprising:

encapsulating multiple Common Public Radio Interface (CPRI) signals of the distributed base station into an optical transport unit x (OTUx) signal by adopting a Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity of the OTUx signal; and

sending the OTUx signal.

11. An apparatus for transmitting interface signals of a distributed base station, comprising:

a processor and a non-transitory computer readable medium having a plurality of computer executable instructions stored thereon which, when executed by the processor, cause the processor to encapsulate multiple Common Public Radio Interface (CPRI) signals of the distributed base station into an optical transport unit x (OTUx) signal by adopting a Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity of the OTUx signal; and

a transmitter configured to send the OTUx signal.

12. A method for receiving interface signals of a distributed base station through an optical transport network, comprising:

receiving an optical transport unit x (OTUx) signal, wherein the OTUx signal is multiplexed with multiple Common Public Radio Interface (CPRI) signal of the distributed base station through a Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity of the OTUx signal;

de-encapsulating the OTUx signal to obtain the multiple the CPRI signals.

13. An apparatus for receiving interface signals of a distributed base station through an optical transport network, comprising:

a receiver configured to receive an optical transport unit x (OTUx) signal, wherein the OTUx signal bears multiple Common Public Radio Interface (CPRI) signal of the distributed base station encapsulated by adopting a Generic Mapping Procedure (GMP) mapping scheme, wherein the x represents a transmission capacity of the OTUx signal; and

a processor and a non-transitory computer readable medium having a plurality of computer executable instructions stored thereon which, when executed by the processor, cause the processor to demultiplex the OTUx signal to obtain the multiple CPRI signals.

14. An apparatus for transmitting interface signals of a distributed base station, comprising:

a first optical transport network (OTN) processing unit, coupled to a Base Band Unit (BBU) of the distributed base station; and

a second OTN processing unit, coupled to the first OTN processing unit and to multiple Remote Radio Units (RRUs) of the distributed base station;

wherein the first OTN processing unit is configured to encapsulate multiple Common Public Radio Interface (CPRI) signals from the BBU into an optical transport unit x (OTUx) signal, and send the OTUx signal to the second OTN processing unit;

wherein the multiple CPRI signals from the BBU is encapsulated into the OTUx signal by adopting a Generic Mapping Procedure (GMP) mapping scheme,

wherein the x represents a transmission capacity of the OTUx signal; and

wherein the second OTN processing unit is configured to de-encapsulate the OTUx signal to obtain the multiple CPRI signals from the BBU, and send the obtained multiple CPRI signals from the BBU to the multiple RRUs.