CN101969370B - Method for coordinating interference between cells - Google Patents
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- CN101969370B CN101969370B CN 201010502372 CN201010502372A CN101969370B CN 101969370 B CN101969370 B CN 101969370B CN 201010502372 CN201010502372 CN 201010502372 CN 201010502372 A CN201010502372 A CN 201010502372A CN 101969370 B CN101969370 B CN 101969370B
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Abstract
The invention discloses a method for coordinating interference between cells, which is suitable for controlling two base stations between two neighboring cells with the same frequency. The method comprises the following steps that: a first base station sends a load indicating message to a second base station, wherein the load indicating message indicates that appointed physical resource blocks PRB are in the warning state; a second base station coordinates the interference between the cells according to the load indicating message, and when the warning state of all or part of PRBs in the appointed PRBs is removed, the first base station sends a warning state removing indicating message to the second base station, wherein the warning state removing indicating message indicates that the warning state of all or part of PRBs in the appointed PRBs is removed; and after the second station receives the warning state removing indicating message, the interference between the cells is coordinated according to the warning state removing indicating message. Through the technical scheme of the invention, the condition that resources of the cells are not utilized fully can be prevented.
Description
Technical field
The present invention relates to the mobile communication technology field, particularly relate to a kind of disturbance coordination method of minizone.
Background technology
Long Term Evolution (LTE, Long Term Evolution) system adopts flat network configuration.Fig. 1 is the LTE network structure.As shown in Figure 1, radio access network of universal mobile communication system (the E-UTRAN of evolution, Evolved Universal Terrestrial Radio Access Network) consisted of by serving BS (eNB, evolved NodeB), interconnected by X2 interface between eNB; Evolved Packet Core (Evolved Packet Corenet work, EPC) comprise gateway (S-GW, Serving Gateway) and Mobility Management Entity (MME, Mobility Management Entity), mutual by S 1 interface and eNB.Wherein the ICIC function is positioned at eNB.
In the LTE system based on OFDM (OFDM, Orthogonal Frequency Division Multiplexing), affect the main interference of systematic function from the interference of minizone.Therefore interference coordination (ICIC, the Inter-Cell Interference Coordination) technology of minizone is one of effective means that improves systematic function.ICIC remains on the interference level between the residential quarter under controlled state by Radio Resource is managed, and especially in the cell boarder area, need to do a little special management to Radio Resource, to satisfy the lifting demand of LTE system edges customer service quality.Inter-Cell Interference Coordination essence is a kind of many cell radio resources management function, and it need to be considered simultaneously from the resource using status information of a plurality of residential quarters and business load state information.
The load Indication message of existing LTE system, be used between the neighbor cell of the same frequency controlled different base stations (eNB), transmit load and interference coordination information, for completing RRM (RRM, Radio Resource management) process provides important information, and message process as shown in Figure 2.
Comprise cell information in load Indication message (LOAD INF ORMATION), and three relevant cells of indication disturbed condition:
Up high interference indication (UL HII, Up link High Interference Indication) cell: by the mode of bit mapping (bitmap), each Physical Resource Block (PRB of sending node eNB1 is provided, Physical resource block) interference sensitivity, indication the uplink interference of this PRB higher than or lower than a certain threshold value.The eNB2 that receives this message should avoid having indicated the PRB of high interference sensitivity into its Cell Edge User equipment (UE, User Equipment) distributes to send as far as possible.
Uplink interference overload indication (UL OI, Up link Interference Overload Indication) cell: by the mode of bit mapping, point out the be disturbed degree of residential quarter on all Resource Block of message sink node, be divided into high, medium and low Three Estate.
Relative Narrowband TX Power (RNTP, Relative Narrowband Tx Power) cell: whether the downlink transmission power that has provided each PRB is lower than in information such as RNTP threshold value and antenna ports.
Above-mentioned three IE are upgraded by new load Indication message, if namely do not receive new load Indication message, the message that eNB will receive all the time before is as the Reference News of ICIC.Traditionally, up high interference indication and the indicated information of RNTP are called early warning information, the indication of uplink interference overload is called warning message, it is referred to as warning information here.
eNB1 as shown in Figure 2, provide certain edge cell of service at it, when load is lighter, edge customer is less, after having triggered the serving BS eNB2 that the load Indication message that once carries UL HII cell sends to its adjacent cell, if never reach the condition that triggers the load Indication message that carries UL HII cell next time, those are not labeled as overload by the PRB that UL HII cell is labeled as high interference sensitivity yet in the load Indication message that carries UL OI cell of eNB 1 follow-up transmission, or eNB1 did not send the load Indication message that carries UL OI cell, the PRB information of the UL HII cell indication before eNB 2 preserves all the time, think and avoid the user of cell edge with oneself also to be dispatched on these PRB, cause resource to take full advantage of.
But in fact the edge customer of eNB1 is completed the scheduled transmission on the PRB of above-mentioned UL HII cell indication already, the alarm to some PRB of the UL HII cell indication is namely removed, eNB2 can use these PRB normally, for example dispatches to its edge customer.So not more under news, the definition when Indication message of not loading lost efficacy has caused two differences that neighbor cell is understood current available resource, causes resource to take full advantage of at the load Indication message.
Inevitably cause utilizing of local resource insufficient at existing ICIC in a word.
Summary of the invention
The invention provides a kind of disturbance coordination method of minizone, the method can avoid local resource to utilize inadequate situation.
For achieving the above object, the method is achieved in that
The invention discloses a kind of disturbance coordination method of minizone, the method is applicable to control respectively between two base stations of two adjacent residential quarters of same frequency, described two base stations are respectively the first base station and the second base station, the first base station sends the load Indication message to the second base station, it is alarm state that this load Indication message represents to specify Physical Resource Block PRB, the interference coordination of minizone is carried out in the second base station according to this load Indication message, the method comprises:
When the alarm state of all or part of PRB in described appointment PRB was removed, the first base station sent alarm state to the second base station and removes Indication message, and this alarm state is removed Indication message and represented to specify the alarm state of all or part of PRB in PRB to remove;
The interference coordination that Indication message carries out the minizone is removed according to this alarm state after receiving described alarm state releasing Indication message in the second base station.
In said method, described load Indication message comprises: up high interference indication information element; This up high interference indication information element will specify PRB to be labeled as high interference sensitivity;
Described alarm state is removed Indication message and comprised: cell is removed in up high interference indication; This up high interference indication is removed cell and is represented with bit mapping mode, and the state that is marked as the high interference sensitivity of all or part of PRB in the PRB of high interference sensitivity in the up high interference indication information element in described load Indication message is removed.
In said method, described up high interference indication is removed cell and is represented with bit mapping mode, and the state that is marked as the high interference sensitivity of all or part of PRB in the PRB of high interference sensitivity in the up high interference indication information element in described load Indication message has been removed and comprised:
The corresponding PRB of each bit in cell is removed in up high interference indication; For each PRB, if described up high interference indication information element is labeled as high interference sensitivity with this PRB, and the state of the high interference sensitivity of current this PRB has been removed, and the bit corresponding with this PRB in up high interference indication releasing cell is filled to the first state; If described up high interference indication information element is labeled as high interference sensitivity with this PRB, and the state of the high interference sensitivity of current this PRB is not also removed, and the bit corresponding with this PRB in up high interference indication releasing cell is filled to the second state; If this PRB is not labeled as high interference sensitivity in described up high interference indication information element, the indication of up high interference is removed the bit corresponding with this PRB in cell and is at random filled a kind of in the first state and the second state.
In said method, described load Indication message comprises: uplink interference overload indication information element; This uplink interference overload indication information element will be specified PRB to be labeled as and be disturbed overload.
Described alarm state is removed Indication message and comprised: cell is removed in the indication of uplink interference overload; This uplink interference overload indication is removed cell and is represented with bit mapping mode, and the state that is marked as the interference overload of all or part of PRB in the PRB that disturbs overload in the uplink interference overload indication information element in described load Indication message is removed.
In said method, the indication of described uplink interference overload is removed cell and is represented with bit mapping mode, and the state that is marked as the interference overload of all or part of PRB in the PRB that disturbs overload in the uplink interference overload indication information element in described load Indication message has been removed and comprised:
The corresponding PRB of each bit in cell is removed in the indication of uplink interference overload; For each PRB, if being labeled as this PRB, described uplink interference overload indication information element disturbs overload, and the state of the interference of current this PRB overload has been removed, and the bit corresponding with this PRB in uplink interference overload indication releasing cell is filled to the first state; Disturb overload if described uplink interference overload indication information element is labeled as this PRB, and the state of current this PRB interference overload is removed not also, the bit corresponding with this PRB in uplink interference overload indication releasing cell is filled to the second state; If this PRB is labeled as in described uplink interference overload indication information element and disturbs overload, the indication of uplink interference overload is removed the bit corresponding with this PRB in cell and is at random filled a kind of in the first state and the second state.
In said method, described load Indication message comprises: Relative Narrowband TX Power RNTP cell; This RNTP cell will specify PRB to be labeled as downlink transmission power higher than the RNTP threshold value.
Described alarm state is removed Indication message and comprised: RNTP removes cell; This RNTP removes cell and represents with bit mapping mode, is marked as downlink transmission power in the RNTP cell in described load Indication message and removes higher than the state of RNTP threshold value higher than the downlink transmission power of all or part of PRB in the PRB of RNTP threshold value.
In said method, described RNTP removes cell and represents with bit mapping mode, is marked as downlink transmission power in the RNTP cell in described load Indication message and has removed higher than the state of RNTP threshold value higher than the downlink transmission power of all or part of PRB in the PRB of RNTP threshold value and comprise:
RNTP removes the corresponding PRB of each bit in cell; For each PRB, if described RNTP cell is labeled as downlink transmission power higher than the RNTP threshold value with this PRB, and the downlink transmission power of current this PRB has been removed higher than the state of RNTP threshold value, and the bit corresponding with this PRB in RNTP releasing cell is filled to the first state; If described RNTP cell is labeled as downlink transmission power higher than the RNTP threshold value with this PRB, and the downlink transmission power of current this PRB is not also removed higher than the state of RNTP threshold value, and the bit corresponding with this PRB in RNTP releasing cell is filled to the second state; If this PRB is not labeled as downlink transmission power higher than the RNTP threshold value in described RNTP cell, RNTP removes the bit corresponding with this PRB in cell and at random fills a kind of in the first state and the second state.
Said method further comprises:
The second base station starts a timer when receiving the load Indication message of the first base station transmission;
If when described timer expiry, the second base station does not receive the alarm state releasing Indication message that the first base station sends, do not receive the load Indication message that the first base station sends again yet, described load Indication message when carrying out the interference coordination of minizone, is no longer considered in the second base station.
Said method further comprises:
If before described timer expiry, the second base station receives the load Indication message that the first base station sends again, and this timer is restarted in the second base station;
If before described timer expiry, the second base station receives the alarm state releasing Indication message that the first base station sends, and this alarm state is removed the alarm state that Indication message represents the whole PRB in described appointment PRB and is removed, and this timer is closed in the second base station;
If before described timer expiry, the second base station receives the alarm state releasing Indication message that the first base station sends, and this alarm state is removed the alarm state that Indication message represents the part PRB in described appointment PRB and is removed, and this timer is restarted in the second base station.
be tod by above-mentioned, this the first base station of the present invention sends the load Indication message to the second base station, it is alarm state that this load Indication message represents to specify Physical Resource Block PRB, the interference coordination of minizone is carried out in the second base station according to this load Indication message, when the alarm state of all or part of PRB in described appointment PRB is removed, the first base station sends alarm state to the second base station and removes Indication message, this alarm state is removed Indication message and is represented to specify the alarm state of all or part of PRB in PRB to remove, the interference coordination that Indication message carries out the minizone is removed according to this alarm state in the second base station.
The technical program, remove by alarm state the relevant information that Indication message upgrades the alarm state of the PRB that stores in adjacent eNB, indicate more timely which PRB no longer to be in alarm state, make adjacent eNB to distribute these idle PRB to its edge customer in follow-up scheduling, avoided local resource to utilize inadequate situation.
Description of drawings
Fig. 1 is LTE network structure of the prior art.
Fig. 2 is load indication procedure chart of the prior art.
Fig. 3 is the signaling process figure of the disturbance coordination method between small area of the present invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.
Fig. 3 is the signaling process figure of the disturbance coordination method of the minizone in the embodiment of the present invention.In the drawings, eNB1 and eNB2 are two base stations controlling respectively two adjacent residential quarters of same frequency.As shown in Figure 3, eNB1 and eNB2 method that interference coordination is carried out in described two adjacent residential quarters comprises:
Step 301, eNB1 sends the load Indication message to eNB2, and eNB2 carries out the interference coordination of minizone according to this load Indication message.
In this step, it is alarm state that Physical Resource Block PRB is specified in described load Indication message indication, for example, the load Indication message represents to specify PRB to be in the indicated alarm state of above-mentioned cell by carrying one or more in up high interference indication HII cell, uplink interference overload indication OI cell and Relative Narrowband TX Power RNTP cell.
Step 302, when the alarm state of all or part of PRB in described appointment PRB was removed, eNB1 sent alarm state to eNB2 and removes Indication message, and eNB2 removes according to this alarm state the interference coordination that Indication message carries out the minizone.
In this step, alarm state is removed Indication message and is represented to specify the alarm state of all or part of PRB in PRB to remove.In an embodiment of the present invention, alarm state is removed Indication message and is removed cell by carrying up high interference indication, cell is removed in uplink interference overload indication, and RNTP removes one or more in cell and represents that the alarm state of all or part of PRB in the indicated appointment PRB of the load Indication message in step 301 removes.
The below removes the entrained up high interference indication of Indication message to the alarm state in above-mentioned steps 302 and removes cell, and cell is removed in the indication of uplink interference overload, and RNTP removes cell and describes one by one:
1, cell is removed in up high interference indication: this cell is corresponding with up high interference indication information element;
If the load Indication message in step 301 comprises: up high interference indication information element; This up high interference indication information element will specify PRB to be labeled as high interference sensitivity; Specify the state of the high interference sensitivity of all or part of PRB in PRB when these and remove, the alarm state that sends in step 302 is removed and is carried up high interference indication releasing cell in Indication message.
In the present invention, the indication of up high interference is removed cell and is represented with bit mapping mode, and the state that is marked as the high interference sensitivity of all or part of PRB in the PRB of high interference sensitivity in described up high interference indication information element is removed, is specially:
The corresponding PRB of each bit in cell is removed in up high interference indication; For each PRB, if described up high interference indication information element is labeled as high interference sensitivity with this PRB, and the state of the high interference sensitivity of current this PRB has been removed, and the bit corresponding with this PRB in up high interference indication releasing cell is filled to the first state; If described up high interference indication information element is labeled as high interference sensitivity with this PRB, and the state of the high interference sensitivity of current this PRB is not also removed, and the bit corresponding with this PRB in up high interference indication releasing cell is filled to the second state; If this PRB is not labeled as high interference sensitivity in described up high interference indication information element, the indication of up high interference is removed the bit corresponding with this PRB in cell and is at random filled a kind of in the first state and the second state.
For example, describe as example so that 4 PRB to be arranged, these 4 PRB are respectively PRB 0, PRB 1, PRB 2, PRB 3.If the up high interference indication information element that carries in the load Indication message that in step 301, eNB1 sends, PRB 0, PRB 1 are marked as high interference sensitivity, and PRB 2, PRB 3 are not marked as high interference sensitivity, and the state of the high interference sensitivity of current PRB 0 is removed, the alarm state that in step 302, eNB1 sends is removed the up high interference indication releasing cell that carries in Indication message and can be expressed as: 10XX, here use " 1 " expression the first state, with " 0 " expression the second state, " X " expression can fill arbitrarily 0 or 1.eNB2 receives alarm state releasing Indication message in step 302 after, the load Indication message that receives in integrating step 301 is resolved it, specifically: due to the load Indication message in step 301 with PRB 0, PRB 1 is labeled as high interference sensitivity, therefore eNB2 only resolve alarm state remove the up high interference indication of carrying in Indication message remove in cell with PRB 0, the bit of PRB 1 correspondence, in this example, the bit corresponding with PRB 0 is " 1 ", the state of its high interference sensitivity is removed as can be known, and the bit corresponding with PRB 1 is " 0 ", the state of its high interference sensitivity is not also removed as can be known, eNB2 carries out the interference coordination of corresponding minizone according to this result.
In other embodiments of the invention, also can be with " 0 " expression the first state, with " 1 " expression the second state, in upper example, up high interference indication is removed cell and also can be expressed as: 01XX.
2, cell is removed in the indication of uplink interference overload; This cell is corresponding with uplink interference overload indication information element;
The up degree that is disturbed of each PRB is divided into high, medium and low three ranks by two threshold values setting; These two threshold values are called the first threshold value and the second threshold value, and wherein the first threshold value is less than the second threshold value.When a PRB up is disturbed degree and is not less than the first threshold value, be referred to as to disturb overload; Otherwise be not referred to as to disturb overload.
If the load Indication message in step 301 comprises: uplink interference overload indication information element; This uplink interference overload indication information element will be specified PRB to be labeled as and be disturbed overload; Specify the state of the interference overload of all or part of PRB in PRB when these and remove, carry the indication of uplink interference overload in the alarm state releasing Indication message that sends in step 302 and remove cell.
In the present invention, the indication of uplink interference overload is removed cell and is represented with bit mapping mode, and the state that is marked as the interference overload of all or part of PRB in the PRB that disturbs overload in described uplink interference overload indication information element is removed, is specially:
The corresponding PRB of each bit in cell is removed in the indication of uplink interference overload; For each PRB, if being labeled as this PRB, described uplink interference overload indication information element disturbs overload, and the state of the interference of current this PRB overload has been removed, and the bit corresponding with this PRB in uplink interference overload indication releasing cell is filled to the first state; Disturb overload if described uplink interference overload indication information element is labeled as this PRB, and the state of current this PRB interference overload is removed not also, the bit corresponding with this PRB in uplink interference overload indication releasing cell is filled to the second state; If this PRB is labeled as in described uplink interference overload indication information element and disturbs overload, the indication of uplink interference overload is removed the bit corresponding with this PRB in cell and is at random filled a kind of in the first state and the second state.
For example, describe as example so that 5 PRB to be arranged, these 5 PRB are respectively PRB 0, PRB 1, PRB 2, PRB 3, PRB 4.If in the uplink interference overload indication information that carries in the load Indication message that sends in step 301, PRB 0, PRB 1, PRB 4 are marked as and disturb overload, and PRB 2, PRB 3 are not marked as the interference overload, and the state of the interference of current PRB 0, PRB 4 overload is removed, the alarm state that sends in step 302 is removed the uplink interference overload indication releasing cell that carries in Indication message and can be expressed as: 10XX1, here use " 1 " expression the first state, with " 0 " expression the second state, " X " expression can fill arbitrarily 0 or 1.eNB2 receives alarm state releasing Indication message in step 302 after, the load Indication message that receives in integrating step 301 is resolved it, specifically: due to the load Indication message in step 301 with PRB 0, PRB 1, PRB 4 is labeled as and disturbs overload, therefore eNB2 only resolve alarm state remove the up high interference indication of carrying in Indication message remove in cell with PRB 0, PRB 1, the bit of PRB 4 correspondences, in this example, with PRB 0, the bit of PRB 4 correspondences is " 1 ", it disturbs the state of overload to remove as can be known, and the bit corresponding with PRB1 is " 0 ", it disturbs the state of overload also not remove as can be known, eNB2 carries out the interference coordination of corresponding minizone according to this result.
3, RNTP removes cell; This cell is corresponding with the RNTP cell;
If the load Indication message in step 301 comprises: the RNTP cell; To specify PRB to be labeled as downlink transmission power higher than the RNTP threshold value in this RNTP cell; When these downlink transmission powers of specifying all or part of PRB in PRB during higher than the status releasing of RNTP threshold value, the alarm state that sends in step 302 is removed and is carried RNTP in Indication message and remove cell.
In the present invention, RNTP removes cell and represents with bit mapping mode, is marked as downlink transmission power in described RNTP cell and removes higher than the state of RNTP threshold value higher than the downlink transmission power of all or part of PRB in the PRB of RNTP threshold value, is specially:
Each bit that RNTP removes in cell represents a PRB, for each PRB, if described RNTP cell is labeled as downlink transmission power higher than the RNTP threshold value with this PRB, and the downlink transmission power of current this PRB has been removed higher than the state of RNTP threshold value, and the bit corresponding with this PRB in RNTP releasing cell is filled to the first state; If described RNTP cell is labeled as downlink transmission power higher than the RNTP threshold value with this PRB, and the downlink transmission power of current this PRB is not also removed higher than the state of RNTP threshold value, and the bit corresponding with this PRB in RNTP releasing cell is filled to the second state; If described RNTP cell is not labeled as downlink transmission power higher than the RNTP threshold value with this PRB, RNTP removes the bit corresponding with this PRB in cell and at random fills a kind of in the first state and the second state.
There to be 6 PRB to describe as example, these 6 PRB are respectively PRB 0, PRB 1, PRB 2, PRB 3, PRB 4, PRB 5.if in the RNTP indication information that carries in the load Indication message that sends in step 301, PRB 0, PRB 1, PRB 4, PRB 5 is labeled downlink transmission power higher than the RNTP threshold value, and PRB 2, PRB 3 is not marked as downlink transmission power higher than the RNTP threshold value, and current PRB 0, PRB 4, the downlink transmission power of PRB 5 is removed higher than the state of RNTP threshold value, the alarm state that sends in step 302 is removed the RNTP releasing cell that carries in Indication message and can be expressed as: 10XX11, here use " 1 " expression the first state, with " 0 " expression the second state, " X " expression can fill arbitrarily 0 or 1.eNB2 receives alarm state releasing Indication message in step 302 after, the load Indication message that receives in integrating step 301 is resolved it, specifically: due to the load Indication message in step 301 with PRB 0, PRB 1, PRB 4, PRB 5 is labeled as downlink transmission power higher than the RNTP threshold value, therefore eNB2 only resolve alarm state remove the RNTP that carries in Indication message remove in cell with PRB 0, PRB 1, PRB 4, the bit of PRB 5 correspondences, in this example, with PRB 0, PRB 4, the bit of PRB 5 correspondences is " 1 ", its downlink transmission power is removed higher than the state of RNTP threshold value as can be known, and the bit corresponding with PRB 1 is " 0 ", its downlink transmission power is not also removed higher than the state of RNTP threshold value as can be known, eNB2 carries out the interference coordination of corresponding minizone according to this result.
In order to reach the effect of better Inter-Cell Interference Coordination, give following timer scheme in the present invention.
Scheme implementation process based on timer: at the eNB internal needle, the load Indication message that receives is increased a timer, represent the term of validity in this load Indication message.Still take the described scene of Fig. 3 as example, eNB2 receive from the load Indication message of eNB1 the time, start or restart corresponding timer.
If the time marquis at described timer expiry, eNB2 does not receive the alarm state releasing Indication message that eNB1 sends, also do not receive the load Indication message that the first base station sends again, eNB2 when carrying out the interference coordination of minizone, no longer considers described load Indication message
If before described timer expiry, eNB2 receives the load Indication message that eNB1 sends again, and eNB2 restarts this timer;
If before described timer expiry, eNB2 receives the alarm state that eNB1 sends and removes Indication message, and this alarm state removes the alarm state that Indication message represents the whole PRB in described appointment PRB and remove, and eNB2 closes this timer;
If before described timer expiry, eNB2 receives the alarm state that eNB1 sends and removes Indication message, and this alarm state removes the alarm state that Indication message represents the part PRB in described appointment PRB and remove, and eNB2 is restarted this timer.
The front is mentioned, load can comprise one or more in up high interference indication information element, uplink interference overload indication information element and these three cells of RNTP indication information element in Indication message, therefore at the eNB internal needle, each cell in described three cells in the load Indication message is increased a timer, the term of validity that represents the corresponding cell in this load Indication message is as T
HII, T
OIAnd T
RNTPStill take the described scene of Fig. 3 as example, when carrying one or more in up high interference indication information element, uplink interference overload indication information element and RNTP indication information element in the load Indication message from eNB1 that eNB2 receives, start or restart corresponding timer.
For example, timer T
HIICorresponding with up high interference indication information element; After eNB2 receives the load Indication message that carries up high interference indication information element, start T
HII
If at T
HIIBefore overtime, eNB2 receives in the load Indication message that eNB1 sends again and carries up high interference indication information element, and eNB2 restarts T
HII
If at T
HIIBefore overtime, eNB2 receives the alarm state releasing Indication message that carries up high interference indication releasing cell that eNB1 sends, and this up high interference indication is removed the state that cell represents the high interference sensitivity of the whole PRB in described appointment PRB and is removed, and eNB2 closes T
HII
If at T
HIIBefore overtime, eNB2 receives the alarm state releasing Indication message that carries up high interference indication releasing cell that eNB1 sends, and this up high interference indication is removed the state that cell represents the high interference sensitivity of the part PRB in described appointment PRB and is removed, and eNB2 is restarted T
HII
If work as T
HIIWhen overtime, eNB2 does not receive the alarm state releasing message of carrying up high interference indication releasing cell that eNB1 sends, do not receive the load Indication message that carries up high interference indication information element that eNB1 sends again yet, eNB2 when carrying out the interference coordination of minizone, no longer considers the state of the high interference sensitivity of indicated appointment PRB in described up high interference indication information element.
Timer T
OICorresponding with uplink interference overload indication information element; ENB2 starts T after receiving the load Indication message that carries uplink interference overload indication information element
OI
At T
OIBefore overtime, after eNB2 received the load Indication message that carries uplink interference overload indication information element that eNB1 sends again, eNB2 restarted T
OI
At T
OIBefore overtime, eNB2 receives the alarm state releasing Indication message that carries uplink interference overload indication releasing cell that eNB1 sends, and the state that this uplink interference overload indicates releasing cell to represent that the interference of the whole PRB in described appointment PRB is transshipped is removed, and eNB2 closes T
OI
At T
OIBefore overtime, eNB2 receives the alarm state releasing Indication message that carries uplink interference overload indication releasing cell that eNB1 sends, and this uplink interference overload indication information element represents that the state of the interference overload of the part PRB in described appointment PRB removes, and eNB2 is restarted T
OI
Work as T
OIIn the time of overtime, eNB2 does not receive the alarm state releasing message of carrying uplink interference overload indication releasing cell that eNB1 sends, do not receive the load Indication message that carries uplink interference overload indication information element that eNB1 sends again yet, eNB2 when carrying out the interference coordination of minizone, no longer considers the state of the interference overload of indicated appointment PRB in described uplink interference overload indication information element.
Timer T
RNTPCorresponding with the RNTP indication information element; After eNB2 receives the load Indication message that carries the RNTP indication information element, start T
RNTP
At T
RNTPBefore overtime, after eNB2 received the load Indication message that eNB1 sends the RNTP indication information element again, eNB2 restarted T
RNTP
At T
RNTPBefore overtime, eNB2 receives the alarm state releasing Indication message that carries RNTP releasing cell that eNB1 sends, and this RNTP removes the downlink transmission power that cell represents the whole PRB in described appointment PRB and removes higher than the state of RNTP threshold value, and eNB2 closes T
RNTP
At T
RNTPBefore overtime, eNB2 receives the alarm state releasing Indication message that carries RNTP releasing cell that eNB1 sends, and this RNTP removes the downlink transmission power that cell represents the part PRB in described appointment PRB and removes higher than the state of RNTP threshold value, and eNB2 is restarted T
RNTP
Work as T
RNTPIn the time of overtime, eNB2 does not receive the alarm state releasing Indication message that carries RNTP releasing indication information element that eNB1 sends, do not receive the load Indication message that carries RNTP releasing indication information element that eNB1 sends again yet, eNB2 when carrying out the interference coordination of minizone, considers that no longer the downlink transmission power of indicated appointment PRB in described RNTP cell is higher than the state of RNTP threshold value.
By above embodiment as seen, eNB2 as shown in Figure 3 receives a load Indication message, the PRB of this load Indication message indication appointment is in the interference alarm state, if being marked as the PRB that disturbs alarm state, these do not occur in follow-up load Indication message, eNB2 thinks that these PRB still are in the interference alarm state, but in fact, the state of the interference alarm of all or part of PRB of these PRB is removed, has so just caused can't taking full advantage of of minizone resource.
In the present invention, when the alarm state of PRB is removed, eNB1 can trigger one and carry the alarm state releasing message that up high interference indication releasing cell, uplink interference overload indication releasing cell or RNTP remove the one or more cells in cell, come high interference sensitivity, interference overload, the downlink transmission power of clear and definite which PRB of indication to remove higher than the state of RNTP threshold value, eNB2 can distribute these available PRB in follow-up scheduling its edge customer, utilize to greatest extent resource, realize the interference coordination of minizone.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (8)
1. the disturbance coordination method of a minizone, the method is applicable to control respectively between two base stations of two adjacent residential quarters of same frequency, described two base stations are respectively the first base station and the second base station, the first base station sends the load Indication message to the second base station, it is alarm state that this load Indication message represents to specify Physical Resource Block PRB, the interference coordination of minizone is carried out in the second base station according to this load Indication message, it is characterized in that, the method comprises:
When the alarm state of all or part of PRB in described appointment PRB was removed, the first base station sent alarm state to the second base station and removes Indication message, and this alarm state is removed Indication message and represented to specify the alarm state of all or part of PRB in PRB to remove;
The interference coordination that Indication message carries out the minizone is removed according to this alarm state after receiving described alarm state releasing Indication message in the second base station;
The second base station starts a timer when receiving the load Indication message of the first base station transmission;
If the time marquis at described timer expiry, the second base station does not receive the alarm state releasing Indication message that the first base station sends, do not receive the load Indication message that the first base station sends again yet, described load Indication message when carrying out the interference coordination of minizone, is no longer considered in the second base station.
2. method according to claim 1, is characterized in that,
Described load Indication message comprises: up high interference indication information element; This up high interference indication information element will specify PRB to be labeled as high interference sensitivity;
Described alarm state is removed Indication message and comprised: cell is removed in up high interference indication; This up high interference indication is removed cell and is represented with bit mapping mode, and the state that is marked as the high interference sensitivity of all or part of PRB in the PRB of high interference sensitivity in the up high interference indication information element in described load Indication message is removed.
3. method according to claim 2, it is characterized in that, described up high interference indication is removed cell and is represented with bit mapping mode, and the state that is marked as the high interference sensitivity of all or part of PRB in the PRB of high interference sensitivity in the up high interference indication information element in described load Indication message has been removed and comprised:
The corresponding PRB of each bit in cell is removed in up high interference indication; For each PRB, if described up high interference indication information element is labeled as high interference sensitivity with this PRB, and the state of the high interference sensitivity of current this PRB has been removed, and the bit corresponding with this PRB in up high interference indication releasing cell is filled to the first state; If described up high interference indication information element is labeled as high interference sensitivity with this PRB, and the state of the high interference sensitivity of current this PRB is not also removed, and the bit corresponding with this PRB in up high interference indication releasing cell is filled to the second state; If this PRB is not labeled as high interference sensitivity in described up high interference indication information element, the indication of up high interference is removed the bit corresponding with this PRB in cell and is at random filled a kind of in the first state and the second state.
4. method according to claim 1, is characterized in that,
Described load Indication message comprises: uplink interference overload indication information element; This uplink interference overload indication information element will be specified PRB to be labeled as and be disturbed overload;
Described alarm state is removed Indication message and comprised: cell is removed in the indication of uplink interference overload; This uplink interference overload indication is removed cell and is represented with bit mapping mode, and the state that is marked as the interference overload of all or part of PRB in the PRB that disturbs overload in the uplink interference overload indication information element in described load Indication message is removed.
5. method according to claim 4, it is characterized in that, the indication of described uplink interference overload is removed cell and is represented with bit mapping mode, and the state that is marked as the interference overload of all or part of PRB in the PRB that disturbs overload in the uplink interference overload indication information element in described load Indication message has been removed and comprised:
The corresponding PRB of each bit in cell is removed in the indication of uplink interference overload; For each PRB, if being labeled as this PRB, described uplink interference overload indication information element disturbs overload, and the state of the interference of current this PRB overload has been removed, and the bit corresponding with this PRB in uplink interference overload indication releasing cell is filled to the first state; Disturb overload if described uplink interference overload indication information element is labeled as this PRB, and the state of current this PRB interference overload is removed not also, the bit corresponding with this PRB in uplink interference overload indication releasing cell is filled to the second state; If this PRB is labeled as in described uplink interference overload indication information element and disturbs overload, the indication of uplink interference overload is removed the bit corresponding with this PRB in cell and is at random filled a kind of in the first state and the second state.
6. method according to claim 1, is characterized in that,
Described load Indication message comprises: Relative Narrowband TX Power RNTP cell; This RNTP cell will specify PRB to be labeled as downlink transmission power higher than the RNTP threshold value;
Described alarm state is removed Indication message and comprised: RNTP removes cell; This RNTP removes cell and represents with bit mapping mode, is marked as downlink transmission power in the RNTP cell in described load Indication message and removes higher than the state of RNTP threshold value higher than the downlink transmission power of all or part of PRB in the PRB of RNTP threshold value.
7. method according to claim 6, it is characterized in that, described RNTP removes cell and represents with bit mapping mode, is marked as downlink transmission power in the RNTP cell in described load Indication message and has removed higher than the state of RNTP threshold value higher than the downlink transmission power of all or part of PRB in the PRB of RNTP threshold value and comprise:
RNTP removes the corresponding PRB of each bit in cell; For each PRB, if described RNTP cell is labeled as downlink transmission power higher than the RNTP threshold value with this PRB, and the downlink transmission power of current this PRB has been removed higher than the state of RNTP threshold value, and the bit corresponding with this PRB in RNTP releasing cell is filled to the first state; If described RNTP cell is labeled as downlink transmission power higher than the RNTP threshold value with this PRB, and the downlink transmission power of current this PRB is not also removed higher than the state of RNTP threshold value, and the bit corresponding with this PRB in RNTP releasing cell is filled to the second state; If this PRB is not labeled as downlink transmission power higher than the RNTP threshold value in described RNTP cell, RNTP removes the bit corresponding with this PRB in cell and at random fills a kind of in the first state and the second state.
8. the described method of any one according to claim 1 to 7, is characterized in that, the method further comprises:
If before described timer expiry, the second base station receives the load Indication message that the first base station sends again, and this timer is restarted in the second base station;
If before described timer expiry, the second base station receives the alarm state releasing Indication message that the first base station sends, and this alarm state is removed the alarm state that Indication message represents the whole PRB in described appointment PRB and is removed, and this timer is closed in the second base station;
If before described timer expiry, the second base station receives the alarm state releasing Indication message that the first base station sends, and this alarm state is removed the alarm state that Indication message represents the part PRB in described appointment PRB and is removed, and this timer is restarted in the second base station.
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| CN102685757B (en) * | 2011-03-16 | 2015-09-16 | 中兴通讯股份有限公司 | Inter-cell interference coordination method and system |
| EP2686987A4 (en) * | 2011-03-16 | 2015-04-22 | Nokia Solutions & Networks Oy | A method and apparatus |
| CN102143521B (en) * | 2011-03-24 | 2016-07-13 | 电信科学技术研究院 | A kind of carry out method, system and the equipment that mutual interference in equipment is coordinated |
| GB2489702A (en) * | 2011-04-04 | 2012-10-10 | Nec Corp | Determining interference between first and second radio technologies in a mobile communications device |
| CN102833787B (en) * | 2011-06-16 | 2018-01-23 | 盐城报业科技发展有限公司 | A kind of method and system of Inter-Cell Interference Coordination |
| CN103037377B (en) * | 2011-09-30 | 2017-10-27 | 中兴通讯股份有限公司 | A kind of co-channel interference coordination approach and device |
| CN104066093B (en) | 2013-03-18 | 2018-03-23 | 财团法人工业技术研究院 | Interference management method, anchor point equipment, base station and system of wireless communication system |
| CN103327539B (en) * | 2013-06-04 | 2016-08-10 | 中国联合网络通信集团有限公司 | Inter-cell interference coordination method and device |
| CN104902496B (en) * | 2014-03-07 | 2020-02-14 | 中兴通讯股份有限公司 | Method and device for coordinating interference between cells |
| CN106161322B (en) * | 2015-04-14 | 2020-10-20 | 电信科学技术研究院 | Signal processing method, uplink resource allocation method and device thereof |
| CN113068219B (en) * | 2021-03-03 | 2022-10-25 | 深圳市日海飞信信息系统技术有限公司 | Uplink resource allocation method, device, base station and storage medium |
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