RADIO UNIT, BASEBAND PROCESSING UNIT AND BASE STATION SYSTEM

• US 20130322336A1
• Filed: 06/26/2013
• Published: 12/05/2013
• Est. Priority Date: 05/31/2012
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Cheng, Xinhao, Li, Mingqiang, Lin, Yonghua, Wang, Qing, Xue, Chao, Yan, Rong, Zhan, Hai, Zhu, Chao
• Granted Patent: US 9,220,004 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 4/185 by embedding added-value information into content, e.g. geo-tagging
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 8/00 Network data management

Abstract

A radio unit configured to connect to a baseband processing unit includes a transformation unit configured to obtain uplink time domain signal data and transform the uplink time domain signal data into uplink frequency domain signal data; and a compression unit configured to compress the uplink frequency domain signal data by using a compression algorithm.

Claims

1. A method for processing uplink signal data in a base station system, the base station system comprising a radio unit and a baseband processing unit, the method comprising:

obtaining, in the radio unit, uplink time domain signal data, and transforming it into uplink frequency domain signal data;

compressing, in the radio unit, the uplink frequency domain signal data by using a compression algorithm;

transmitting the compressed uplink frequency domain signal data from the radio unit to the baseband processing unit; and

decompressing, in the baseband processing unit, the compressed uplink frequency domain signal data.

2. The method of claim 1, further comprising determining a compression mode of uplink signal data, the compression mode comprising time domain compression mode and frequency domain compression mode.

3. The method of claim 2, further comprising determining the compression mode based on at least one of:

an estimation of compression ratio of the uplink time domain signal data; and

actual compression ratio feedback from the compression unit.

4. The method of claim 2, further comprising notifying the compression mode via at least one of the following manners:

sending a mode notification signal; and

adding a domain mode tag in the uplink time domain signal data.

5. The method of claim 2, further comprising transmitting uplink time domain signal data directly to the compression unit without passing through the transformation unit in response to time domain compression mode, and compressing the obtained uplink time domain signal data by using a compression algorithm.

6. The method of claim 2, further comprising transforming the uplink time domain signal data into uplink frequency domain signal data in response to frequency domain compression mode, and transmitting the uplink time domain signal data directly to the compression unit in response to time domain compression mode, and compressing the obtained uplink time domain signal data by using a compression algorithm.

7. The method of claim 1, further comprising:

obtaining compressed downlink signal data from the baseband processing unit and decompress the compressed downlink signal data; and

obtaining downlink time domain signal data by inversely transforming the decompressed downlink signal data.

8. The method of claim 7, further comprising obtaining a compression mode of downlink signal data, transmitting decompressed downlink signal data to the inverse transformation unit in response to frequency domain compression mode of the downlink signal data, and making decompressed downlink signal data bypass the inverse transformation unit in response to time domain compression mode of the downlink signal data.

9. The method of claim 7, further comprising obtaining a compression mode of downlink signal data, inversely transforming decompressed downlink signal data into downlink time domain signal data in response to frequency domain compression mode of the downlink signal data, and directly outputting decompressed downlink signal data without performing inverse transformation in response to time domain compression mode of the downlink signal data.

10. A method for processing uplink signal data in a base station system, the base station system comprising a radio unit and a baseband processing unit, the method comprising:

obtaining compressed uplink signal data from the radio unit and decompressing the compressed uplink signal data; and

obtain baseband processed downlink frequency domain signal data, compressing the downlink frequency domain signal data by using a compression algorithm, and transmitting it to the radio unit.

11. The method of claim 10, further comprising:

determining a compression mode of downlink signal data, the compression mode comprising time domain compression mode and frequency domain compression mode.

12. The method of claim 11, determining the compression mode based on at least one of:

an estimation of compression ratio of the downlink frequency domain signal data; and

actual compression ratio feedback from the compression module.

13. The method of claim 11, further comprising notifying the compression mode via at least one of the following manners:

sending a mode notification signal; and

adding a domain mode tag in the downlink frequency domain signal data.

14. The method of claim 11, further comprising inversely transforming downlink frequency domain signal data into downlink time domain signal data, and transmitting downlink frequency domain signal data to the inverse transformation module in response to time domain compression mode, and compressing the obtained downlink time domain signal data by using a compression algorithm.

15. The method of claim 11, further comprising inversely transforming the downlink frequency domain signal data into downlink time domain signal data in response to time domain compression mode, transmitting the downlink frequency domain signal data directly to the compression module in response to frequency domain compression mode, and compressing the obtained downlink time domain signal data by using a compression algorithm.

16. The method of claim 10, further comprising transforming uplink signal data into uplink frequency domain signal data, obtaining a compression mode of uplink signal data, and transmitting the decompressed uplink signal data to the transformation module in response to time domain compression mode of the uplink signal data, and making decompressed uplink signal data bypass the transformation module in response to frequency domain compression mode of the uplink signal data.

17. The method of claim 10, further comprising obtaining compression mode of uplink signal data, and transforming decompressed uplink signal data into uplink frequency domain signal data in response to time domain compression mode of the uplink signal data, and directly outputting decompressed uplink signal data without performing transformation in response to frequency domain compression mode of the uplink signal data.