Method and device for obtaining carrier information and carrier information indication

• US 8,964,589 B2
• Filed: 06/27/2011
• Issued: 02/24/2015
• Est. Priority Date: 06/28/2010
• Status: Active Grant

• Current Assignee: China Mobile Communications Corporation (China Mobile Communications Group Co., Ltd.)
• Original Assignee: China Mobile Communications Corporation (China Mobile Communications Group Co., Ltd.)
• Inventors: Li, Nan, Hu, Zhenping, Zhang, Dawei, Xu, Jin
• Primary Examiner(s): Lee, Andrew
• Application Number:
  US13/704,119
• Publication Number:
  US 20130094409A1
• Time in Patent Office: 1,338 Days
• Field of Search: 370/252, 370/329, 370/337, 370/347
• US Class Current: 370/252
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource

Abstract

A method and device for obtaining carrier information and carrier information indication include: a user equipment obtains parameters of uplink carrier information according to the message sent by a network side in broadcast manner, or, the user equipment obtains parameters of uplink carrier information according to the preset information. Time Division Duplex wireless communication system with asymmetry uplink frequency band and downlink frequency band can be supported effectively, guard frequency band near the intersection occurred when the adjacent frequencies coexist is utilized fully, and frequency spectrum utilization rate is improved; further more, Time Division Duplex wireless communication system with unequal uplink band width and downlink band width can be supported, and the application of the Time Division Duplex system is expanded effectively.

Claims

1. A method for obtaining carrier information by user equipment, which is used to a time division duplex, TDD, wireless communication system in which a band of an uplink is asymmetrical with that of a downlink, the method comprising:

obtaining, by the user equipment, a parameter of uplink carrier information according to preset information;

wherein the obtaining, the user equipment the parameter of the uplink carrier information according to the preset information, comprises;

obtaining, by the user equipment, the parameter of the uplink carrier information from the reset information according to an identifier of the uplink carrier information, if the identifier of the uplink carrier information is carried in a message by the network side in broadcast manner, wherein the identifier of the uplink carrier information corresponds to the parameter of the uplink carrier information; and

obtaining, by the user equipment, the parameter of the uplink carrier information directly from the preset information, if neither the parameter of the uplink carrier information nor he identifier of the uplink carrier information is carried in the message issued by the network side in broadcast manner, wherein the preset information comprises position information for determining an uplink carrier frequency and/or bandwidth information for determining an uplink carrier bandwidth.

2. The method according to claim 1, wherein the preset information is directly set on the user equipment, or issued to the user equipment by the network side and stored into the user equipment.

3. The method according to claim 1, wherein the uplink carrier information comprises the uplink carrier frequency and/or the uplink carrier bandwidth;

if the identifier of the uplink carrier information is an identifier of the uplink carrier frequency, the identifier of the uplink carrier frequency indicates whether a center frequency of the uplink carrier is identical to a center frequency of a downlink carrier; and

if the identifier of the uplink carrier information is an identifier of the uplink carrier bandwidth, the identifier of the uplink carrier bandwidth indicates whether the uplink carrier bandwidth is identical to a downlink carrier bandwidth.

4. The method according to claim 1, wherein the uplink carrier information comprises an uplink carrier frequency and/or an uplink carrier bandwidth;

wherein the parameter of the uplink carrier information comprises a position parameter of the uplink carrier frequency and/or a bandwidth parameter of the uplink carrier frequency; and

wherein the position parameter and/or bandwidth parameter of the uplink carrier frequency are configurable.

5. The method according to claim 4, wherein the position parameter of the uplink carrier frequency comprises:

a center frequency of the uplink carrier frequency, a starting position and an ending position of the uplink carrier frequency, or spacing information between a position of the uplink carrier frequency and a position of a downlink carrier frequency; and

the spacing information between the position of the uplink carrier frequency and the position of the downlink carrier frequency comprises;

a spacing between an edge of the uplink carrier bandwidth and an edge of a downlink carrier bandwidth, a spacing between a center frequency of the uplink carrier bandwidth and a center frequency of the downlink carrier bandwidth, a spacing between a starting frequency of the uplink carrier bandwidth and a starting frequency of the downlink carrier bandwidth, or a spacing between an ending frequency of the uplink carrier bandwidth and an ending frequency of the downlink carrier bandwidth.

6. The method according to claim 4, wherein the bandwidth parameter of the uplink carrier frequency comprises a size of the uplink bandwidth.

7. The method according to claim 1, wherein in a time division duplex wireless communication system in which the band of the uplink is asymmetrical with that of the downlink,

the band corresponding to the uplink carrier frequency is one of intersection bands occurred when TDD and Frequency Division Duplex, FDD, coexist in adjacent frequency band in the wireless communication system, the band corresponding to a downlink carrier frequency is another one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system, the band corresponding to the downlink carrier frequency is one of downlink bands of the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is another one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

or

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system.

8. A method for indicating carrier information, which is used to a time division duplex, TDD, wireless communication system in which a band of an uplink is asymmetrical with that of a downlink, the method comprising:

issuing, by a network-side equipment, a parameter of uplink carrier information to a user equipment in broadcast manner;

or issuing, by a network-side equipment, an identifier of uplink carrier information to a user equipment in broadcast manner;

wherein the uplink carrier information comprises an uplink carrier frequency and/or an uplink carrier bandwidth;

wherein the parameter of the uplink carrier information comprises a position parameter of the uplink carrier frequency; and

/or a bandwidth parameter of the uplink carrier frequency and wherein the position parameter and/or bandwidth parameter of the uplink carrier frequency are configurable.

9. The method according to claim 8, wherein the uplink carrier information comprises an uplink carrier frequency and/or an uplink carrier bandwidth;

if the identifier of the uplink carrier information is an identifier of the uplink carrier frequency, the identifier of the uplink carrier frequency indicates whether a center frequency of the uplink carrier is identical to a center frequency of a downlink carrier; and

if the identifier of the uplink carrier information is an identifier of the uplink carrier bandwidth, the identifier of the uplink carrier bandwidth indicates whether the uplink carrier bandwidth is identical to a downlink carrier bandwidth.

10. The method according to claim 8, wherein the position parameter of the uplink carrier frequency comprises:

a center frequency of the uplink carrier frequency, a starting position and an ending position of the uplink carrier frequency, or a spacing information between a position of the uplink carrier frequency and a position of a downlink carrier frequency; and

the spacing information between the position of the uplink carrier frequency and the position of the downlink carrier frequency comprises;

a spacing between an edge of the uplink carrier bandwidth and an edge of a downlink carrier bandwidth, a spacing between a center frequency of the uplink carrier bandwidth and a center frequency of the downlink carrier bandwidth, a spacing between a starting frequency of the uplink carrier bandwidth and a starting frequency of the downlink carrier bandwidth, or a spacing between an ending frequency of the uplink carrier bandwidth and an ending frequency of the downlink carrier bandwidth.

11. The method according to claim 8, wherein the bandwidth parameter of the uplink carrier frequency comprises a size of the uplink bandwidth.

12. The method according to claim 8, wherein in a time division duplex wireless communication system in which the band of the uplink is asymmetrical with that of the downlink,

the band corresponding to the uplink carrier frequency is one of intersection bands occurred when TDD and Frequency Division Duplex, FDD, coexist in adjacent frequency band in the wireless communication system, the band corresponding to a downlink carrier frequency is another one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system, the band corresponding to the downlink carrier frequency is one of downlink bands of the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is another one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

or

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system.

13. A user equipment, which is used to a time division duplex, TDD, wireless communication system in which a band of an uplink is asymmetrical with that of a downlink, the user equipment comprising a non-transient computer readable media, wherein the non-transient computer readable media stores:

an obtaining module adapted to obtain a parameter of uplink carrier information according to preset information,

wherein the obtaining module is adapted to obtain the parameter of the uplink carrier information from the preset information according to an identifier of the uplink carrier information, if the identifier of the uplink information is carried in a message issued by the network side in broadcast manner, herein the identifier of the uplink carrier information corresponds to the parameter of the uplink carrier information; and

to obtain the parameter of the uplink carrier information directly from the preset information, if neither the parameter of the uplink carrier information nor the identifier of the uplink carrier information is carried in the message issued by network side in broadcast manner wherein the preset information comprises position information for determining an uplink carrier frequency and/or bandwidth information for determining an uplink carrier bandwidth.

14. The user equipment according to claim 13, wherein the preset information is directly set on the user equipment, or issued to the user equipment by the network side and stored into the user equipment.

15. The user equipment according to claim 13, wherein the uplink carrier information comprises the uplink carrier frequency and/or the uplink carrier bandwidth;

if the identifier of the uplink carrier information is an identifier of the uplink carrier frequency, the identifier of the uplink carrier frequency indicates whether a center frequency of the uplink carrier is identical to a center frequency of a downlink carrier; and

if the identifier of the uplink carrier information is an identifier of the uplink carrier bandwidth, the identifier of the uplink carrier bandwidth indicates whether the uplink carrier bandwidth is identical to a downlink carrier bandwidth.

16. The user equipment according to claim 15, wherein the parameter of uplink carrier information comprises:

a position parameter of the uplink carrier frequency and/or a bandwidth parameter of the uplink carrier frequency, wherein the position parameter and/or bandwidth parameter of the uplink carrier frequency are configurable;

the position parameter of the uplink carrier frequency comprises;

a center frequency of the uplink carrier frequency, a starting position and an ending position of the uplink carrier frequency, or spacing information between a position of the uplink carrier frequency and a position of a downlink carrier frequency;

the spacing information between the position of the uplink carrier frequency and the position of the downlink carrier frequency comprises;

a spacing between an edge of the uplink carrier bandwidth and an edge of the downlink carrier bandwidth, a spacing between a center frequency of the uplink carrier bandwidth and a center frequency of the downlink carrier bandwidth, a spacing between a starting frequency of the uplink carrier bandwidth and a starting frequency of the downlink carrier bandwidth, or a spacing between an ending frequency of the uplink carrier bandwidth and an ending frequency of the downlink carrier bandwidth; and

the bandwidth parameter of the uplink carrier frequency comprises a size of the uplink bandwidth.

17. The user equipment according to claim 13, wherein in a time division duplex wireless communication system in which the band of the uplink is asymmetrical with that of the downlink,

the band corresponding to the uplink carrier frequency is one of intersection bands occurred when TDD and Frequency Division Duplex, FDD, coexist in adjacent frequency band in the wireless communication system, the band corresponding to a downlink carrier frequency is another one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system, the band corresponding to the downlink carrier frequency is one of downlink bands of the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is another one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

or

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system.

18. A network-side equipment, which is used to a time division duplex, TDD, wireless communication system in which a band of an uplink is asymmetrical with that of a downlink, the network-side equipment comprising a non-transient computer readable media, wherein the non-transient computer readable media stores:

a sending module adapted to issue a parameter of uplink carrier information to a user equipment in broadcast manner or issue an identifier of uplink carrier information to a user equipment in broadcast manners;

wherein the uplink carrier information comprises an uplink carrier frequency and/or an uplink carrier bandwidth;

wherein the parameter of the uplink carrier information comprises of a position parameter of the uplink carries frequency and/or a bandwidth parameter of the uplink carrier frequency and wherein the position parameter and/or bandwidth parameter of the uplink carrier frequency are configurable.

19. The network-side equipment according to claim 18, wherein;

if the identifier of the uplink carrier information is an identifier of the uplink carrier frequency, the identifier of the uplink carrier frequency indicates whether a center frequency of the uplink carrier is identical to a center frequency of a downlink carrier; and

if the identifier of the uplink carrier information is an identifier of the uplink carrier bandwidth, the identifier of the uplink carrier bandwidth indicates whether the uplink carrier bandwidth is identical to a downlink carrier bandwidth.

20. The network-side equipment according to claim 19, wherein

the position parameter of the uplink carrier frequency comprises:

a center frequency of the uplink carrier frequency, a starting position and an ending position of the uplink carrier frequency, or spacing information between a position of the uplink carrier frequency and a position of a downlink carrier frequency;

the spacing information between the position of the uplink carrier frequency and the position of the downlink carrier frequency comprises;

a spacing between en edge of the uplink carrier bandwidth and en edge of the downlink carrier bandwidth, a spacing between a center frequency of the uplink carrier bandwidth and a center frequency of the downlink carrier bandwidth, a spacing between a starting frequency of the uplink carrier bandwidth and a starting frequency of the downlink carrier bandwidth, or a spacing between an ending frequency of the uplink carrier bandwidth and an ending frequency of the downlink carrier bandwidth; and

the bandwidth parameter of the uplink carrier frequency comprises a size of the uplink bandwidth.

21. The network-side equipment according to claim 18, wherein in a time division duplex wireless communication system in which the band of the uplink is asymmetrical with that of the downlink,

the band corresponding to the uplink carrier frequency is one of intersection bands occurred when TDD and Frequency Division Duplex, FDD coexist in adjacent frequency band in the wireless communication system, the band corresponding to a downlink carrier frequency is another one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system, the band corresponding to the downlink carrier frequency is one of downlink bands of the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is another one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system;

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system;

or

the band corresponding to the uplink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system, the band corresponding to the downlink carrier frequency is one of the intersection bands occurred when TDD and FDD coexist in adjacent frequency band in the wireless communication system and one of the uplink bands of the wireless communication system.