Abstract
An interference coordination method in TDD systems an apparatus and a system are disclosed in embodiments of this invention which relate to the communication field. The method provided in the embodiment of this invention comprises: receiving by an interfered cell a uplink-downlink configuration of an interfering cell sent from the interfering cell; generating by the interfered cell interference indication information for subframes in the interfered cell in a direction opposite to the signal transmission direction in the interfering cell according to a uplink-downlink configuration of the interfered cell and the uplink-downlink configuration of the interfering cell; sending by the interfered cell the uplink-downlink configuration of the interfered cell and the interference indication information to the interfering cell to enable the interfering cell to perform interference coordination according to the uplink-downlink configuration of the interfered cell and the interference indication information.
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Claim
1. An interference coordination method for a time division duplexing (TDD) system, comprising:
receiving, by an interfered cell, an uplink-downlink configuration of an interfering cell from the interfering cell; generating, by the interfered cell, interference indication information for subframes in the interfered cell in a direction opposite to a signal transmission direction in the interfering cell, according to an uplink-downlink configuration of the interfered cell and the uplink-downlink configuration of the interfering cell; sending, by the interfered cell, the uplink-downlink configuration of the interfered cell and the interference indication information to the interfering cell, to enable the interfering cell to perform interference coordination according to the uplink-downlink configuration of the interfered cell and the interference indication information.
2. The method according to claim 1, further comprising:
matching signal transmission directions of corresponding subframes in the interfered cell and the interfering cell by the interfered cell according to the uplink-downlink configuration of the interfered cell and the uplink-downlink configuration of the interfering cell; determining, by the interfered cell, subframes in the interfered cell in a direction opposite to the signal transmission direction in the interfering cell.
3. The method according to claim 2, further comprising:
obtaining, by the interfered cell, an interference measurement value of the subframes in the interfered cell in a direction opposite to the signal transmission direction in the interfering cell; wherein generating the interference indication information is further according to the interference measurement value.
4. The method according to claim 3, wherein the interference indication information comprises information indicating interference strength level at each resource granularity or information indicating interference impact on the interfered cell by the interfering cell at each resource granularity.
5. The method according to claim 1, further comprising:
setting an update period; wherein generating the interference indication information and sending the uplink-downlink configuration of the interfered cell and the interference indication information are performed in each update period.
6. An interference coordination method for a time division duplexing (TDD) system, comprising:
sending, by an interfering cell, an uplink-downlink configuration of the interfering cell to an interfered cell; receiving, by the interfering cell, an uplink-downlink configuration of the interfered cell from the interfered cell, and interference indication information for subframes in the interfered cell in a direction opposite to a signal transmission direction in the interfering cell; performing, by the interfering cell, interference coordination according to the uplink-downlink configuration of the interfered cell and the interference indication information.
7. The method according to claim 6, wherein the interference indication information comprises information indicating interference strength level at each resource granularity or information indicating interference impact on the interfered cell by the interfering cell at each resource granularity.
8. The method according to claim 6, wherein performing interference coordination comprises:
determining, by the interfering cell, subframes of the interfering cell causing uplink-downlink interference on the interfered cell according to the uplink-downlink configuration of the interfered cell and the uplink-downlink configuration of the interfering cell; and according to the interference indication information, adjusting, by the interfering cell, transmitted power of the subframes causing uplink-downlink interference on the interfered cell, or adjusting resource locations used by user equipment served by the interfering cell, so as to reduce or avoid interference caused on the interfered cell.
9. The method according to claim 6, further comprising:
setting an update period; wherein the sending, receiving and performing are performed in each update period.
10. A base station of an interfered cell, comprising:
a receiver, configured to receive an uplink-downlink configuration of an interfering cell sent from the interfering cell; a processor, configured to generate interference indication information for subframes in the interfered cell in a direction opposite to a signal transmission direction in the interfering cell, according to an uplink-downlink configuration of the interfered cell and the uplink-downlink configuration of the interfering cell; and a transmitter, configured to send the uplink-downlink configuration of the interfered cell and the interference indication information to the interfering cell, to enable the interfering cell to perform interference coordination according to the uplink-downlink configuration of the interfered cell and the interference indication information.
11. The base station according to claim 10, wherein the processor is further configured to:
according to the uplink-downlink configuration of the interfered cell and the uplink-downlink configuration of the interfering cell, match signal transmission directions of corresponding subframes in the interfered cell and the interfering cell; determine subframes in the interfered cell having a signal transmission direction opposite to that of the interfering cell according to the matching result.
12. The base station according to claim 11, wherein the processor is further configured to:
obtain an interference measurement value of the subframe in the interfered cell in a direction opposite to the signal transmission direction of the interfering cell; wherein the processor is further configured to generate the interference indication information according to the interference measurement value.
13. The base station according to claim 12, wherein the interference indication information comprises information indicating interference strength level at each resource granularity or information indicating interference impact on the interfered cell by the interfering cell at each resource granularity.
14. The base station according to claim 10, wherein the processor is further configured to set an update period; and wherein the processor is further configured to perform the generating and to cause the transmitter to perform the sending in each update period.
15. A base station of an interfering cell, comprising:
a transmitter, configured to send an uplink-downlink configuration of the interfering cell to an interfered cell; a receiver, configured to receive the uplink-downlink configuration of the interfered cell from the interfered cell, and interference indication information for subframes in the interfered cell in a direction opposite to the signal transmission direction in the interfering cell; and a processor, configured to perform interference coordination according to the uplink-downlink configuration of the interfered cell and the interference indication information.
16. The base station according to claim 15, wherein the interference indication information comprises information indicating interference strength level at each resource granularity or information indicating interference impact on the interfered cell by the interfering cell at each resource granularity.
17. The base station according to claim 15, wherein the processor is further configured to:
according to an uplink-downlink configuration of the interfering cell and the uplink-downlink configuration of the interfered cell, determine subframes in the interfering cell causing uplink-downlink interference on the interfered cell; and according to the interference indication information, adjust transmitted power of the subframes causing uplink-downlink interference on the interfered cell, or adjust resource locations used by the interfering cell, so as to reduce or avoid interference caused on the interfered cell.
18. The base station according to claim 17, wherein the processor is further configured to set an update period; and wherein the processor is further configured to perform the interference coordination in each update period.
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SUMMARY
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.