CN102131223A - Interference management method and system in heterogeneous network and home base station - Google Patents
Interference management method and system in heterogeneous network and home base station Download PDFInfo
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Abstract
The invention discloses an interference management method and an interference management system in a heterogeneous network. The interference management method comprises the following steps of: pre-configuring more than one carrier wave for a macro-cellular base station, wherein different carrier waves correspond to different coverage areas; respectively detecting reference signal energy which are on the different carrier waves and from the macro-cellular station by a home base station, and determining the coverage area in which the home base station is located according to detection results; and determining that the carrier wave corresponding to the coverage area is a low priority carrier wave, determining that the remaining carrier waves are high priority carrier waves, and preferably using the high priority carrier waves. The invention simultaneously discloses the home base station. By adopting the scheme disclosed by the invention, mutual interference between the macro-cellular base station and the home base station can be reduced.
Description
Technical field
The present invention relates to mobile communication technology, interference management method in particularly a kind of heterogeneous network and system and a kind of Home eNodeB.
Background technology
For satisfying the requirement of high-speed data service to wireless system performance, at present, as third generation partner program (3GPP, 3rd Generation Partnership Project) and micro-wave access to global intercommunication (WiMAX, World Interoperability for Microwave Access) etc. International Standards Organization all proposes to introduce a class novel radio node, i.e. Home eNodeB in wireless system.Compare with existing macrocell base stations, the transmitting power of Home eNodeB is lower, and coverage is less, is mainly used in indoor places such as covering family and office, can be used as effectively replenishing of macrocell base stations.Because Home eNodeB is different with the coverage of macrocell base stations, the wireless network that therefore will introduce Home eNodeB usually is called heterogeneous network.
When being introduced in of Home eNodeB brought above-mentioned benefit, also can bring certain problem, such as and macrocell base stations between interference problem, the existence of interference problem can make user terminal (UE, UserEquipment) and the proper communication between the base station be affected, therefore, need take certain measure, reduce this interference, promptly implement interference management heterogeneous network.But also there is not a kind of effective interference management method in the prior art.
Summary of the invention
In view of this, main purpose of the present invention is to provide the interference management method in a kind of heterogeneous network, can effectively reduce the mutual interference mutually between macrocell base stations and the Home eNodeB.
Another object of the present invention is to provide the system of the interference management in a kind of heterogeneous network, can effectively reduce the mutual interference mutually between macrocell base stations and the Home eNodeB.
Another purpose of the present invention is to provide a kind of Home eNodeB, can effectively reduce the mutual interference mutually between macrocell base stations and the Home eNodeB.
For achieving the above object, technical scheme of the present invention is achieved in that
Interference management method in a kind of heterogeneous network is above carrier wave of macrocell base stations configuration, the coverage that different carrier is corresponding different in advance; This method comprises:
Home eNodeB detects on different carrier the reference signal energy from described macrocell base stations respectively, and determines self residing coverage according to testing result;
The carrier wave of coverage correspondence of living in is defined as lower priority carriers, the carrier wave of remainder is defined as the high priority carrier wave, preferentially use the high priority carrier wave.
Describedly determine that according to testing result self residing coverage comprises:
Detected each reference signal energy is compared with pre-set threshold respectively, will be defined as the residing coverage of described Home eNodeB greater than the coverage of the carrier wave of the parameter signal energy correspondence of described threshold value.
Described preferential use high priority carrier wave comprises: according to priority order from high to low, each carrier wave is sorted, be in primary carrier wave after the preferential use ordering; Wherein, the carrier wave that is in equal priority is set its sequencing arbitrarily;
Be in after the primary carrier wave after the described preferential use ordering, further comprise:
Be positioned at the interference value of each macrocellular user terminal UE measurement of described macrocell base stations coverage from described Home eNodeB, and interference value and the predefined interference threshold value that measures compared, if interference value greater than the interference threshold value, then reports interference value described macrocell base stations; Described interference value comprises interference strength and interference source sign;
Described macrocell base stations is according to the interference source sign that receives, and the interference value of the interference strength maximum that receives is notified to described Home eNodeB;
After described Home eNodeB receives notification message, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from described macrocell base stations, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from described macrocell base stations, then from all interference values that are received from described macrocell base stations, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
Described preferential use high priority carrier wave comprises: according to priority order from high to low, each carrier wave is sorted, be in primary carrier wave after the preferential use ordering; Wherein, the carrier wave that is in equal priority is set its sequencing arbitrarily;
Be in after the primary carrier wave after the described preferential use ordering, further comprise:
Be positioned at the interference value of each macrocellular UE measurement of the macrocell base stations coverage adjacent from described Home eNodeB with Home eNodeB, and interference value and the predefined interference threshold value that measures compared, if interference value greater than the interference threshold value, then reports interference value the described macrocell base stations adjacent with Home eNodeB; Described interference value comprises interference strength and interference source sign;
The described macrocell base stations adjacent with Home eNodeB be according to the interference source sign that receives, and the interference value of the interference strength maximum that receives is notified to described Home eNodeB;
After described Home eNodeB receives notification message, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from the macrocell base stations that is adjacent, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from the macrocell base stations that is adjacent, then from all interference values that are received from the macrocell base stations that is adjacent, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
Interference management system in a kind of heterogeneous network comprises: macrocell base stations and Home eNodeB, described macrocell base stations are provided with an above carrier wave in advance, the coverage that different carrier is corresponding different;
Described Home eNodeB is used for detecting respectively on different carrier the reference signal energy from described macrocell base stations, and determines self residing coverage according to testing result; The carrier wave of coverage correspondence of living in is defined as lower priority carriers, remaining carrier wave is defined as the high priority carrier wave, preferentially use the high priority carrier wave.
Described Home eNodeB sorts to each carrier wave according to priority order from high to low, is in primary carrier wave after the preferential use ordering;
Described macrocell base stations is further used for, receive the interference value that each interior macrocellular user terminal UE of self coverage reports, described interference value comprises interference strength and interference source sign, and, the interference value of the interference strength maximum that receives is notified to described Home eNodeB according to the interference source that receives sign;
Described Home eNodeB is further used for, after receiving the notification message of described macrocell base stations, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from described macrocell base stations, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from described macrocell base stations, then from all interference values that are received from described macrocell base stations, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
Described Home eNodeB sorts to each carrier wave according to priority order from high to low, is in primary carrier wave after the preferential use ordering; Further comprise in this system:
The macrocell base stations adjacent with described Home eNodeB, be used to receive the interference value that each interior macrocellular UE of self coverage reports, described interference value comprises interference strength and interference source sign, and, the interference value of the interference strength maximum that receives is notified to described Home eNodeB according to the interference source that receives sign;
Described Home eNodeB is further used for, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from the macrocell base stations that is adjacent, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from the macrocell base stations that is adjacent, then from all interference values that are received from the macrocell base stations that is adjacent, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
A kind of Home eNodeB comprises:
First determining unit is used for detecting respectively on different carrier the reference signal energy from macrocell base stations, and determines the residing coverage of described Home eNodeB according to testing result; Described different carrier is an above carrier wave for described macrocell base stations configuration, the coverage that different carrier is corresponding different;
Second determining unit is used for the carrier wave of coverage correspondence of living in is defined as lower priority carriers, and remaining carrier wave is defined as the high priority carrier wave, preferentially uses the high priority carrier wave.
Described first determining unit comprises:
Detection sub-unit is used for detecting respectively on different carrier the reference signal energy from described macrocell base stations;
Relatively subelement is used for detected each reference signal energy is compared with pre-set threshold respectively, will be defined as the residing coverage of described Home eNodeB greater than the coverage of the carrier wave of the parameter signal energy correspondence of described threshold value.
Described second determining unit comprises:
The ordering subelement is used for according to priority order from high to low each carrier wave being sorted, and wherein, the carrier wave that is in equal priority is set its sequencing arbitrarily;
Use subelement, be used for being in primary carrier wave after the preferential use ordering.
Described use subelement is further used for, reception is from the notification message of described macrocell base stations, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from described macrocell base stations, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from described macrocell base stations, then be received from the interference value of finding out the interference strength minimum in the interference value that carries the notification message of described macrocell base stations, select the carrier wave of the interference value correspondence of this interference strength minimum to use from each time.
And/or, described use subelement is further used for, reception is from the notification message of the macrocell base stations adjacent with Home eNodeB, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from the macrocell base stations adjacent with Home eNodeB, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from the macrocell base stations adjacent with Home eNodeB, then be received from the interference value of finding out the interference strength minimum in the interference value that carries the notification message of the described macrocell base stations adjacent, select the carrier wave of the interference value correspondence of this interference strength minimum to use with Home eNodeB from each time.
As seen, adopt technical scheme of the present invention, the carrier wave of Home eNodeB coverage correspondence of living in is defined as lower priority carriers, remaining carrier wave is defined as the high priority carrier wave, Home eNodeB preferentially uses the high priority carrier wave, because Home eNodeB is in the coverage of high priority carrier wave, thus reduced and macrocell base stations between produce the possibility of disturbing; And Home eNodeB also can be in the use of carrier wave, according to the interference measurement results of each macrocellular UE feedback of macrocell base stations subordinate, adjusts employed carrier wave, disturbs thereby further reduce.
Description of drawings
Fig. 1 is the flow chart of the inventive method embodiment.
Fig. 2 is the composition structural representation of system embodiment of the present invention.
Fig. 3 is the composition structural representation of Home eNodeB embodiment of the present invention.
Embodiment
At problems of the prior art, the interference management scheme in a kind of heterogeneous network is proposed among the present invention, be above carrier wave of macrocell base stations configuration, the coverage that different carrier is corresponding different in advance; Home eNodeB detects on different carrier the reference signal energy from macrocell base stations respectively, and determines self residing coverage according to testing result; The carrier wave of coverage correspondence of living in is defined as lower priority carriers, remaining carrier wave is defined as the high priority carrier wave, preferentially use the high priority carrier wave.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
Fig. 1 is the flow chart of the inventive method embodiment.Suppose to have disposed 3 carrier waves for macrocell base stations in the present embodiment, be respectively carrier wave C1, C2 and C3, the corresponding different coverage of different carrier (need to prove, here the different coverage of being mentioned, do not represent to exist between each carrier wave the covering repeat region), 3 carrier waves can satisfy the covering requirement of macrocell base stations by the network planning.As shown in Figure 1, may further comprise the steps:
Step 11: Home eNodeB detects on different carrier the reference signal energy from macrocell base stations respectively, and determines self residing coverage according to testing result.
According to network design, Home eNodeB is arranged in one or several the coverage of carrier wave C1, C2 and C3, but Home eNodeB itself is ignorant, so after its start, but perhaps also periodically, detect on different carrier reference signal energy from macrocell base stations; It is pre-configured in Home eNodeB specifically to need to detect which carrier wave, usually, Home eNodeB need be positioned in the coverage of which macrocell base stations, and Home eNodeB just needs to detect the carrier wave of which macrocell base stations correspondence; Afterwards, Home eNodeB compares detected each reference signal energy respectively with pre-set threshold, this threshold value can be meant the macrocellular user's who has provided in the standard access thresholding, in present embodiment, being about to carrier wave C1, C2 and C3 corresponding reference signal energy compares with threshold value respectively, if a certain or certain several reference signal energy, think then that Home eNodeB is positioned at the coverage of the carrier wave of this or this several reference signal energy correspondences greater than threshold value.
Illustrate, be positioned at the common zone that covers of 3 carrier waves if carrier wave C1, C2 and C3 corresponding reference signal energy, so then illustrate Home eNodeB all greater than threshold value; If carrier wave C2 and C3 corresponding reference signal energy are greater than threshold value, but carrier wave C1 corresponding reference signal energy illustrates so then that less than threshold value Home eNodeB is positioned at carrier wave C2 and the common zone that covers of C3; If carrier wave C3 corresponding reference signal energy is greater than threshold value, but carrier wave C1 and C2 corresponding reference signal energy illustrate so then that all less than threshold value Home eNodeB only is positioned at the coverage of carrier wave C1; Other possible situation is given unnecessary details no longer one by one.
Need to prove that in actual applications, may be provided with a plurality of Home eNodeB in the coverage of a macrocell base stations, the processing mode of each Home eNodeB is identical, is that example describes with one only in the present embodiment.
Step 12: Home eNodeB is defined as lower priority carriers with the carrier wave of coverage correspondence of living in, and remaining carrier wave is defined as the high priority carrier wave, preferentially uses the high priority carrier wave.
For instance, if Home eNodeB is positioned at carrier wave C2 and the common zone that covers of C3, promptly be positioned at the coverage of carrier wave C2 and C3 simultaneously, so carrier wave C2 and C3 are defined as lower priority carriers, and carrier wave C1 is defined as the high priority carrier wave, Home eNodeB preferentially uses carrier wave C1.If the number of the high priority carrier wave of determining is 2 or 3, can select a high priority carrier wave to use so at random.
In actual applications, Home eNodeB also can sort to each carrier wave according to priority order from high to low, is in primary carrier wave after the preferential use ordering, wherein, the carrier wave that is in equal priority can be set its sequencing arbitrarily, such as, the priority of carrier wave C1 is the highest, the priority of carrier wave C2 and C3 is identical, so, can sort, also can sort according to the order of C1, C3, C2 according to the order of C1, C2, C3.
Follow-up, disturb in order further to reduce, Home eNodeB is in the use to carrier wave, and also the interference measurement results that can feed back according to each macrocellular UE of macrocell base stations subordinate is adjusted employed carrier wave in real time.
Specific implementation comprises:
Each the macrocellular UE that is positioned at the macrocell base stations coverage periodically measures the interference value from Home eNodeB, and interference value and the predefined interference threshold value that measures compared, if greater than the interference threshold value, then the interference value that measures is reported macrocell base stations, comprise information such as interference strength and interference source sign in the described interference value, usually, Home eNodeB mainly may cause interference to its peripheral macrocellular UE.Macrocell base stations knows that promptly Home eNodeB has influenced the performance of macrocellular UE after receiving the interference value that macrocellular UE reports, and the interference source sign according to receiving is notified to Home eNodeB by existing X2 interface or S1 interface etc. with interference value.Macrocellular may receive the interference value that a plurality of macrocellular UE report simultaneously, and it can be notified to Home eNodeB with the interference value of interference strength maximum usually.After Home eNodeB receives notification message, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from macrocell base stations, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from macrocell base stations, then from all interference values that are received from macrocell base stations, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
Illustrate, suppose that 3 carrier waves sort according to the order of C1, C2, C3, Home eNodeB at first uses carrier wave C1, behind the notification message that receives from macrocell base stations, change into and use carrier wave C2, if receive notification message once more from macrocell base stations, then change into and use carrier wave C3, if still receive notification message from macrocell base stations, then explanation uses 3 carrier waves all can cause interference to macrocellular UE, correspondingly, according to the interference value that carries respectively in the notification message that receives for 3 times, select the carrier wave of interference strength minimum to use.
In addition, in the said process, only considered the interference that Home eNodeB may cause the macrocellular UE in the macrocell base stations of place, and in actual applications, if Home eNodeB is positioned at the fringe region of macrocell base stations coverage, Home eNodeB also may produce the macrocellular UE in the macrocell base stations that is adjacent and disturb so, therefore, can further carry out following processing in the scheme of the present invention:
Be positioned at the interference value of each macrocellular UE measurement of the macrocell base stations coverage adjacent from Home eNodeB with Home eNodeB, and interference value and the predefined interference threshold value that measures compared, if interference value greater than the interference threshold value, then reports interference value the macrocell base stations adjacent with Home eNodeB; The macrocell base stations adjacent with Home eNodeB be according to the interference source sign that receives, and the interference value of the interference strength maximum that receives is notified to Home eNodeB; After Home eNodeB receives notification message, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from the macrocell base stations that is adjacent, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from the macrocell base stations that is adjacent, then from all interference values that receive, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
Based on said method, Fig. 2 is the composition structural representation of system embodiment of the present invention.As shown in Figure 2, comprising: macrocell base stations 21 and Home eNodeB 22; Be provided with an above carrier wave on the macrocell base stations 21 in advance, the coverage that different carrier is corresponding different;
Home eNodeB 22 is used for detecting respectively on different carrier the reference signal energy from macrocell base stations 21, and determines self residing coverage according to testing result; The carrier wave of coverage correspondence of living in is defined as lower priority carriers, remaining carrier wave is defined as the high priority carrier wave, preferentially use the high priority carrier wave.
Wherein, Home eNodeB 22 sorts to each carrier wave according to priority order from high to low, is in primary carrier wave after the preferential use ordering;
Macrocell base stations 21 can be further used for, receive the interference value that each interior macrocellular UE of self coverage reports, described interference value comprises interference strength and interference source sign, and according to the interference source sign that receives, and the interference value of the interference strength maximum that receives is notified to Home eNodeB 22;
Home eNodeB 22 is further used for, behind the notification message that receives macrocell base stations 21, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from macrocell base stations 21, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from macrocell base stations 21, then from all interference values that are received from macrocell base stations 21, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
In addition, also can further comprise in the system shown in Figure 2:
The macrocell base stations 23 adjacent with Home eNodeB 22, be used to receive the interference value that each interior macrocellular UE of self coverage reports, described interference value comprises interference strength and interference source sign, and, the interference value of the interference strength maximum that receives is notified to Home eNodeB 22 according to the interference source that receives sign; Home eNodeB 22 is according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from the macrocell base stations 23 that is adjacent, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from the macrocell base stations 23 that is adjacent, then from all interference values that are received from the macrocell base stations 23 that is adjacent, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
Fig. 3 is the composition structural representation of Home eNodeB embodiment of the present invention.As shown in Figure 3, comprising:
First determining unit 31 is used for detecting respectively on different carrier the reference signal energy from macrocell base stations, and determines the residing coverage of Home eNodeB according to testing result; Described different carrier is an above carrier wave for the macrocell base stations configuration, the coverage that different carrier is corresponding different;
Second determining unit 32 is used for the carrier wave of coverage correspondence of living in is defined as lower priority carriers, and remaining carrier wave is defined as the high priority carrier wave, preferentially uses the high priority carrier wave.
Wherein, can specifically comprise in first determining unit 31:
Detection sub-unit 311 is used for detecting respectively on different carrier the reference signal energy from macrocell base stations;
Relatively subelement 312 is used for detected each reference signal energy is compared with pre-set threshold respectively, will be defined as the residing coverage of Home eNodeB greater than the coverage of the carrier wave of the parameter signal energy correspondence of threshold value.
Can specifically comprise in second determining unit 32:
Ordering subelement 321 according to priority order from high to low, sorts to each carrier wave, and wherein, the carrier wave that is in equal priority is set its sequencing arbitrarily;
Use subelement 322, be used for being in primary carrier wave after the preferential use ordering.
Wherein, use subelement 322 to be further used for, reception is from the notification message of macrocell base stations, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from macrocell base stations, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message, then be received from the interference value of finding out the interference strength minimum in the interference value that carries the notification message of macrocell base stations, select the carrier wave of the interference value correspondence of this interference strength minimum to use from each time from macrocell base stations; And/or, reception is from the notification message of the macrocell base stations adjacent with Home eNodeB, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from the macrocell base stations adjacent with Home eNodeB, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from the macrocell base stations adjacent with Home eNodeB, then be received from the interference value of finding out the interference strength minimum in the interference value that carries the notification message of the macrocell base stations adjacent, select the carrier wave of the interference value correspondence of this interference strength minimum to use with Home eNodeB from each time.
The concrete workflow of system and apparatus embodiments shown in Fig. 2 and 3 please refer to the respective description among the method embodiment shown in Figure 1, repeats no more herein.
In a word, adopt technical scheme of the present invention, effectively reduce the mutual interference mutually between Home eNodeB and the macrocell base stations.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. the interference management method in the heterogeneous network is above carrier wave of macrocell base stations configuration in advance, the coverage that different carrier is corresponding different; It is characterized in that this method comprises:
Home eNodeB detects on different carrier the reference signal energy from described macrocell base stations respectively, and determines self residing coverage according to testing result;
The carrier wave of coverage correspondence of living in is defined as lower priority carriers, the carrier wave of remainder is defined as the high priority carrier wave, preferentially use the high priority carrier wave.
2. method according to claim 1 is characterized in that, describedly determines that according to testing result self residing coverage comprises:
Detected each reference signal energy is compared with pre-set threshold respectively, will be defined as the residing coverage of described Home eNodeB greater than the coverage of the carrier wave of the parameter signal energy correspondence of described threshold value.
3. method according to claim 1 and 2 is characterized in that, described preferential use high priority carrier wave comprises: according to priority order from high to low, each carrier wave is sorted, be in primary carrier wave after the preferential use ordering; Wherein, the carrier wave that is in equal priority is set its sequencing arbitrarily;
Be in after the primary carrier wave after the described preferential use ordering, further comprise:
Be positioned at the interference value of each macrocellular user terminal UE measurement of described macrocell base stations coverage from described Home eNodeB, and interference value and the predefined interference threshold value that measures compared, if interference value greater than the interference threshold value, then reports interference value described macrocell base stations; Described interference value comprises interference strength and interference source sign;
Described macrocell base stations is according to the interference source sign that receives, and the interference value of the interference strength maximum that receives is notified to described Home eNodeB;
After described Home eNodeB receives notification message, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from described macrocell base stations, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from described macrocell base stations, then from all interference values that are received from described macrocell base stations, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
4. method according to claim 1 and 2 is characterized in that, described preferential use high priority carrier wave comprises: according to priority order from high to low, each carrier wave is sorted, be in primary carrier wave after the preferential use ordering; Wherein, the carrier wave that is in equal priority is set its sequencing arbitrarily;
Be in after the primary carrier wave after the described preferential use ordering, further comprise:
Be positioned at the interference value of each macrocellular UE measurement of the macrocell base stations coverage adjacent from described Home eNodeB with Home eNodeB, and interference value and the predefined interference threshold value that measures compared, if interference value greater than the interference threshold value, then reports interference value the described macrocell base stations adjacent with Home eNodeB; Described interference value comprises interference strength and interference source sign;
The described macrocell base stations adjacent with Home eNodeB be according to the interference source sign that receives, and the interference value of the interference strength maximum that receives is notified to described Home eNodeB;
After described Home eNodeB receives notification message, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from the macrocell base stations that is adjacent, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from the macrocell base stations that is adjacent, then from all interference values that are received from the macrocell base stations that is adjacent, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
5. the interference management system in the heterogeneous network, comprising: macrocell base stations and Home eNodeB, described macrocell base stations are provided with an above carrier wave in advance, the coverage that different carrier is corresponding different; It is characterized in that,
Described Home eNodeB is used for detecting respectively on different carrier the reference signal energy from described macrocell base stations, and determines self residing coverage according to testing result; The carrier wave of coverage correspondence of living in is defined as lower priority carriers, remaining carrier wave is defined as the high priority carrier wave, preferentially use the high priority carrier wave.
6. system according to claim 5 is characterized in that, described Home eNodeB sorts to each carrier wave according to priority order from high to low, is in primary carrier wave after the preferential use ordering;
Described macrocell base stations is further used for, receive the interference value that each interior macrocellular user terminal UE of self coverage reports, described interference value comprises interference strength and interference source sign, and, the interference value of the interference strength maximum that receives is notified to described Home eNodeB according to the interference source that receives sign;
Described Home eNodeB is further used for, after receiving the notification message of described macrocell base stations, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from described macrocell base stations, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from described macrocell base stations, then from all interference values that are received from described macrocell base stations, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
7. system according to claim 5 is characterized in that, described Home eNodeB sorts to each carrier wave according to priority order from high to low, is in primary carrier wave after the preferential use ordering; Further comprise in this system:
The macrocell base stations adjacent with described Home eNodeB, be used to receive the interference value that each interior macrocellular UE of self coverage reports, described interference value comprises interference strength and interference source sign, and, the interference value of the interference strength maximum that receives is notified to described Home eNodeB according to the interference source that receives sign;
Described Home eNodeB is further used for, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from the macrocell base stations that is adjacent, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from the macrocell base stations that is adjacent, then from all interference values that are received from the macrocell base stations that is adjacent, find out the interference value of interference strength minimum, select the carrier wave of the interference value correspondence of this interference strength minimum to use.
8. a Home eNodeB is characterized in that, comprising:
First determining unit is used for detecting respectively on different carrier the reference signal energy from macrocell base stations, and determines the residing coverage of described Home eNodeB according to testing result; Described different carrier is an above carrier wave for described macrocell base stations configuration, the coverage that different carrier is corresponding different;
Second determining unit is used for the carrier wave of coverage correspondence of living in is defined as lower priority carriers, and remaining carrier wave is defined as the high priority carrier wave, preferentially uses the high priority carrier wave.
9. Home eNodeB according to claim 8 is characterized in that, described first determining unit comprises:
Detection sub-unit is used for detecting respectively on different carrier the reference signal energy from described macrocell base stations;
Relatively subelement is used for detected each reference signal energy is compared with pre-set threshold respectively, will be defined as the residing coverage of described Home eNodeB greater than the coverage of the carrier wave of the parameter signal energy correspondence of described threshold value.
10. according to Claim 8 or 9 described Home eNodeB, it is characterized in that described second determining unit comprises:
The ordering subelement is used for according to priority order from high to low each carrier wave being sorted, and wherein, the carrier wave that is in equal priority is set its sequencing arbitrarily;
Use subelement, be used for being in primary carrier wave after the preferential use ordering.
11. Home eNodeB according to claim 10, it is characterized in that, described use subelement is further used for, reception is from the notification message of described macrocell base stations, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from described macrocell base stations, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from described macrocell base stations, then be received from the interference value of finding out the interference strength minimum in the interference value that carries the notification message of described macrocell base stations, select the carrier wave of the interference value correspondence of this interference strength minimum to use from each time.
12. Home eNodeB according to claim 10, it is characterized in that, described use subelement is further used for, reception is from the notification message of the macrocell base stations adjacent with Home eNodeB, according to ranking results, be in deputy carrier wave after using ordering, if receive notification message once more from the macrocell base stations adjacent with Home eNodeB, be in tertiary carrier wave after then using ordering, and the like, after if all carrier waves are all finished using, still receive notification message from the macrocell base stations adjacent with Home eNodeB, then be received from the interference value of finding out the interference strength minimum in the interference value that carries the notification message of the described macrocell base stations adjacent, select the carrier wave of the interference value correspondence of this interference strength minimum to use with Home eNodeB from each time.
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| WO2014154165A1 (en) * | 2013-03-28 | 2014-10-02 | 电信科学技术研究院 | Method and device for selecting working carrier and reporting information |
| CN104080089B (en) * | 2013-03-28 | 2018-03-16 | 电信科学技术研究院 | Operating carriers select and information uploading method and equipment |
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| CN102131223B (en) | 2013-09-11 |
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