Method for carrier aggregation transmission and apparatus for realizing carrier aggregation transmission

• US 9,825,740 B2
• Filed: 07/24/2015
• Issued: 11/21/2017
• Est. Priority Date: 01/25/2013
• 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: Shang, Zheng, Wang, Zongjie
• Primary Examiner(s): Ng, Christine
• Application Number:
  US14/808,997
• Publication Number:
  US 20150333881A1
• Time in Patent Office: 851 Days
• Field of Search: 370328, 370338, 370401
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA

Abstract

A carrier aggregation transmission method and apparatus are provided. The method includes: bearing N carriers in a preset band, where N is a positive integer greater than 1, and a nominal bandwidth values of the carriers are less than or equal to 5 MHz; aggregating the N carriers, to make nominal channel spacing between adjacent carriers among the N carriers is integral multiples of 0.2 MHz; and transmitting the N aggregated carriers. Besides, by further appropriately setting the chip rate corresponding to the carriers with different nominal bandwidths, the performance of small-bandwidth and narrow-bandwidth aggregation systems is efficiently improved, and existing hardware and algorithms can be reused.

Claims

1. A carrier aggregation transmission method, comprising:

bearing N carriers in a preset band, wherein N is a positive integer greater than 1, and a nominal bandwidth value of the N carriers is less than or equal to 5 MHz;

aggregating the N carriers, to make nominal channel spacing between adjacent carriers among the N carriers an integral multiple of 0.2 MHz; and

transmitting the N aggregated carriers,

wherein a chip rate (Fc) of each carrier is equal to 3.84 Mega chips per second (Mcps) divided by Nc, wherein Nc is a positive integer;

a shaping filter factor (Fsp) of each carrier ranges from 1.2 to 1.3; and

a nominal bandwidth value B of each carrier is equal to Fc multiplied by Fsp, and is an integral multiple of 0.2 MHz.

2. The method according to claim 1, wherein a nominal bandwidth value B of each carrier belongs to a first set B1 and the first set B1 is {0.6 MHz, 0.8 MHz, 1.2 MHz, 1.6 MHz, 2.4 MHz}.

3. The method according to claim 2, wherein the nominal channel spacing between the adjacent carriers is obtained by:

calculating a half of a sum of the nominal bandwidth values of the adjacent carriers as a first result;

calculating a half of an absolute value of a difference between the nominal bandwidth values of the adjacent carriers as a second result;

calculating a remainder of the second result with respect to 0.2 MHz as a third result; and

calculating a sum of the first result and the third result as the nominal channel spacing between the adjacent carriers.

4. The method according to claim 1, wherein a nominal bandwidth value B of each carrier belongs to a second set B2 and the second set B2 is {0.8 MHz, 1.2 MHz, 1.6 MHz, 2.4 MHz}.

5. The method according to claim 4, wherein the nominal channel spacing between the adjacent carriers is equal to a half of a sum of the nominal bandwidth values of the adjacent carriers.

6. The method according to claim 1, wherein a nominal bandwidth value B of each carrier belongs to a third set B3 and the third set B3 is {0.6 MHz, 0.8 MHz, 1.2 MHz, 1.6 MHz, 2.4 MHz, 5 MHz}.

7. The method according to claim 6, wherein the nominal channel spacing between the adjacent carriers is obtained by:

calculating a half of a sum of the nominal bandwidth values of the adjacent carriers as a first result;

calculating a half of an absolute value of a difference between the nominal bandwidth values of the adjacent carriers as a second result;

calculating a remainder of the second result with respect to 0.2 MHz as a third result; and

calculating a sum of the first result and the third result as the nominal channel spacing between the adjacent carriers.

8. The method according to claim 1, wherein a nominal bandwidth value B of each carrier belongs to a fourth set B4 and the fourth set B4 is {0.8 MHz, 1.2 MHz, 1.6 MHz, 2.4 MHz, 5 MHz}.

9. The method according to claim 8, wherein the nominal channel spacing between the adjacent carriers is obtained by:

calculating a half of a sum of the nominal bandwidth values of the adjacent carriers as a first result;

calculating a half of an absolute value of a difference between the nominal bandwidth values of the adjacent carriers as a second result;

calculating a remainder of the second result with respect to 0.2 MHz as a third result; and

calculating a sum of the first result and the third result as the nominal channel spacing between the adjacent carriers.

10. An apparatus for implementing carrier aggregation transmission, comprising a bearing module, an aggregation module and a transmission module;

wherein

the bearing module is configured to bear N carriers in a preset band, where N is a positive integer greater than 1, and a nominal bandwidth value of the N carriers is less than or equal to 5 MHz;

the aggregation module is configured to aggregate the N carriers, to make nominal channel spacing between adjacent carriers among the N carriers an integral multiple of 0.2 MHz; and

the transmission module is configured to transmit the N aggregated carriers from the aggregation module,

wherein a chip rate (Fc) of each carrier of the N carriers is equal to 3.84 Mega chips per second (Mcps) divided by Nc, wherein Nc is a positive integer;

a shaping filter factor (Fsp) of each carrier ranges from 1.2 to 1.3; and

a nominal bandwidth value B of each carrier is equal to Fc multiplied by Fsp, and is an integral multiple of 0.2 MHz.

11. The apparatus according to claim 10, wherein a nominal bandwidth value B of each carrier belongs to a first set B1 and the first set B1 is {0.6 MHz, 0.8 MHz, 1.2 MHz, 1.6 MHz, 2.4 MHz}.

12. The apparatus according to claim 10, wherein a nominal bandwidth value B of each carrier belongs to a second set B2 and the second set B2 is {0.8 MHz, 1.2 MHz, 1.6 MHz, 2.4 MHz}.

13. The apparatus according to claim 10, wherein a nominal bandwidth value B of each carrier belongs to a third set B3 and the third set B3 is {0.6 MHz, 0.8 MHz, 1.2 MHz, 1.6 MHz, 2.4 MHz, 5 MHz}.

14. The apparatus according to claim 10, wherein a nominal bandwidth value B of each carrier belongs to a fourth set B4 and the fourth set B4 is {0.8 MHz, 1.2 MHz, 1.6 MHz, 2.4 MHz, 5 MHz}.

15. An apparatus for implementing carrier aggregation transmission, comprising an outputting device and a processor;

wherein

the processor is configured to;

bear N carriers in a preset band, wherein N is a positive integer greater than 1, and a nominal bandwidth value of the N carriers is less than or equal to 5 MHz; and

aggregate the N carriers, to make nominal channel spacing between adjacent carriers of the N carriers an integral multiple of 0.2 MHz, and

the outputting device is configured to transmit the N aggregated carriers,

wherein a chip rate (Fc) of each carrier borne in the preset band by the processor is equal to 3.84 Mega chips per second (Mcps) divided by Nc, where Nc is a positive integer;

a shaping filter factor (Fsp) of each carrier ranges from 1.2 to 1.3;

and a nominal bandwidth value B of each carrier is equal to Fc multiplied by Fsp, and is an integral multiple of 0.2 MHz.

16. The apparatus according to claim 15, wherein a nominal bandwidth value B of each carrier borne in the preset band by the processor belongs to a first set B1 and the first set B1 is {0.6 MHz, 0.8 MHz, 1.2 MHz, 1.6 MHz, 2.4 MHz}.

17. The apparatus according to claim 16, wherein the processor is further configured to:

calculate a half of a sum of the nominal bandwidth values of the adjacent carriers as a first result;

calculate a half of an absolute value of a difference between the nominal bandwidth values of the adjacent carriers as a second result;

calculate a remainder of the second result with respect to 0.2 MHz as a third result; and

calculate a sum of the first result and the third result as the nominal channel spacing between the adjacent carriers.