CN103974279A - Method, system and device allowing small cell nodes to acquire information of adjacent cells - Google Patents
Method, system and device allowing small cell nodes to acquire information of adjacent cells Download PDFInfo
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- CN103974279A CN103974279A CN201310042553.9A CN201310042553A CN103974279A CN 103974279 A CN103974279 A CN 103974279A CN 201310042553 A CN201310042553 A CN 201310042553A CN 103974279 A CN103974279 A CN 103974279A
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Abstract
The invention discloses a method, a system and a device allowing small cell nodes to acquire the information of adjacent cells. The method includes: a measuring gap is configured for each small cell node and UE (user equipment) communicated with the small cell node, and in the measuring gap, all communication except for random accessing between the small cell node and the UE is cut off, and the small cell node adopts time division multiplexing to configure a control channel and transmits control information on the control channel; in the measuring gap, each small cell node receives the control information transmitted by other small cell nodes when not transmitting the control information, and acquires the information of adjacent cells according to the received control information. By the method, the small cell nodes can acquire the information of adjacent cells.
Description
Technical field
The application relates to mobile communication technology field, relates in particular to the mthods, systems and devices that a kind of small-cell node obtains neighboring BS information.
Background technology
In mobile communications network, in order to reach the object of Inter-Cell Interference Coordination, need each community node to obtain neighboring BS information, information such as adjacent area ID, adjacent area disturbed condition.
At present, community node is monitored the control channel of adjacent area by X2 interface, thereby obtains neighboring BS information.
Described control channel comprises broadcast channel (PBCH), synchronizing channel (SCH) etc., and SCH wherein comprises for sending the channel of main synchronizing sequence (PSS) and secondary synchronization sequences (SSS).
In the configuration of control channel, the control channel of all communities of the whole network node is all configured on same resource location at present, and all communities of the whole network node all utilizes control channel to send control information on same resource location.
Development along with mobile communication technology, in mobile communications network, there is a kind of small-cell (Small Cell) node, small-cell node is generally low power nodes, comprise Microcell, picocell, Home eNodeB etc., between each small-cell node, do not have for carrying out the X2 interface of inter-node communication, cannot obtain neighboring BS information by X2 interface, and under some scene, for example, when needs carry out Inter-Cell Interference Coordination, need again small-cell node can obtain neighboring BS information, therefore, how small-cell node obtains neighboring BS information becomes a current technical problem that needs solution.
Summary of the invention
In view of this, the mthods, systems and devices that the application provides a kind of small-cell node to obtain neighboring BS information, make small-cell node can obtain neighboring BS information.
Small-cell node obtains a method for neighboring BS information, and described small-cell node is not for carrying out the X2 interface of small-cell inter-node communication, and the method comprises:
For each small-cell node and with the UE allocating and measuring gap of each small-cell node communication, in described measurement clearance, between each small-cell node and UE, disconnect all communications except random access procedure, each small-cell node adopts time division multiplexing mode configuration control channel in described measurement clearance, and sends control information on control channel;
In described measurement clearance, each small-cell node receives the control information that other small-cell nodes send when self not sending control information, and according to the control information receiving, obtains neighboring BS information.
Small-cell node obtains a system for neighboring BS information, and described small-cell node is for carrying out the X2 interface of small-cell inter-node communication, this system comprise inking device, small-cell node and with the UE of small-cell node communication;
Described inking device, be used to each small-cell node and with the UE allocating and measuring gap of each small-cell node communication;
Described each small-cell node, for disconnect all communication the except random access procedure with UE in described measurement clearance, and in described measurement clearance, adopt time division multiplexing mode to configure control channel, and send control information on control channel, each small-cell node receives the control information that other small-cell nodes send when self not sending control information, and according to the control information receiving, obtains neighboring BS information;
Described UE, for disconnecting and the communicating by letter of small-cell node in described measurement clearance.
Small-cell node obtains a device for neighboring BS information, and described small-cell node is not for carrying out the X2 interface of small-cell inter-node communication, and this device comprises configuration module, communication module, receiver module and detection module;
Described configuration module, for obtaining the measurement clearance information of network side configuration;
Described communication module, for disconnect with UE all communication the except random access procedure in described measurement clearance, the time of setting in described measurement clearance sends control information on control channel;
Described receiver module, the control information sending for receive other small-cell nodes when described communication module does not send control information in described measurement clearance;
Described detection module, obtains neighboring BS information for the control information receiving according to described receiver module;
Wherein, different small-cell nodes adopts time division multiplexing mode configuration control channel in described measurement clearance, and sends control information on control channel.
From such scheme, the present invention is small-cell node and the UE allocating and measuring gap that communicates with, in this measurement clearance, small-cell node disconnects all the communicating by letter except random access procedure with UE, and reconfigure the resource location of each small-cell node control channel, in described measurement clearance, with time division multiplexing mode, configure the control channel of each small-cell node, and send control information on control channel, the control information of other small-cell nodes is monitored and is detected in the behavior that small-cell node is simulated UE in described measurement clearance, make small-cell node can obtain neighboring BS information.
Accompanying drawing explanation
Fig. 1 is the method flow diagram that small-cell provided by the invention node obtains neighboring BS information.
Fig. 2 is the system composition schematic diagram that small-cell provided by the invention node obtains neighboring BS information.
Fig. 3 is the structure drawing of device that small-cell provided by the invention node obtains neighboring BS information.
Embodiment
Fig. 1 is the method flow diagram that small-cell provided by the invention node obtains neighboring BS information.
As shown in Figure 1, the method comprises:
Step 101, for each small-cell node and with the UE allocating and measuring gap of each small-cell node communication.
In this step, by network side be each small-cell node and with the UE allocating and measuring gap of each small-cell node communication, specifically can by signaling message, measurement clearance information be handed down to each small-cell node and described UE by network side.
Step 102, in described measurement clearance, between each small-cell node and UE, disconnect all communications except random access procedure, each small-cell node adopts time division multiplexing mode configuration control channel in described measurement clearance, and sends control information on control channel.
Step 103, in described measurement clearance, each small-cell node receives the control information that other small-cell nodes send when self not sending control information, and according to the control information receiving, obtains neighboring BS information.
Visible, method shown in Fig. 1 by for small-cell node and with the UE allocating and measuring gap of small-cell node communication, and change the control channel resource location of each small-cell node in measurement clearance, make each small-cell node in described measurement clearance configure control channel with time division multiplexing mode, and send control information on control channel, when small-cell node does not send control information in described measurement clearance, simulation UE monitors the control information that other small-cell nodes send, thereby can obtain neighboring BS information.
Wherein, in described measurement clearance, between each small-cell node and UE, disconnect all communications except random access procedure, can guarantee that on the one hand each small-cell node does not need to continue as UE service in community, thereby the control information that other small-cell nodes send is monitored in simulation UE behavior, on the other hand, in order to guarantee that UE can access small-cell, therefore need to keep random access procedure communication, also can avoid UE cannot access small-cell.
Wherein, each small-cell node adopts time division multiplexing mode configuration control channel in described measurement clearance, and on control channel, send control information can adopt below several modes:
Mode one, each small-cell node determines according to the cell ID of self (ID) the shared time that self sends control information.
Mode two, each small-cell node determines according to high-level signaling the shared time that self sends control information.
Mode three, each small-cell node self sends control information the shared time from can be used in random selection in the time that sends described control information in described measurement clearance.
Each small-cell node adopts time division multiplexing mode configuration control channel in described measurement clearance, and while sending control information on control channel, the subframe of can take adopts time division multiplexing mode to send control information as the unit interval, also OFDM (OFDM) symbol of can take adopts time division multiplexing mode to send control information as the unit interval, particularly:
Can take subframe as the unit interval, determine the different small-cell nodes shared subframe that sends control information in described measurement clearance, wherein, the subframe that different small-cell nodes takies is different.
Or, can take OFDM symbol as the unit interval, determine the OFDM symbol that different small-cell nodes sends control information shared in described measurement clearance, wherein, the OFDM symbol that different small-cell nodes takies is different.
Illustrate the method that each small-cell node adopts time division multiplexing mode to send control information in described measurement clearance below.
Example one: in this example, each small-cell node adopts mode one to determine and self sends control information the shared time.
Particularly, each small-cell node can be by the community ID of self to predetermined value delivery, according to the corresponding relation putting in order that can be used in the unit interval that sends described control information in delivery result and described measurement clearance, determine the shared time that self sends control information.
Wherein, while carrying out modulo operation, described predetermined value is larger, generally can be in measurement clearance the small-cell node number of quadrature just more, correspondingly need also larger by measurement clearance configuration.
The corresponding relation putting in order that can be used in the unit interval that sends described control information in delivery result and described measurement clearance is generally made an appointment.
For example, ID that can approximately settled small-cell node is 0 o'clock to the delivery result of described predetermined value, the resource location that this small-cell node is stipulated in existing protocol 3GPP TS36.211 sent control information on (being called for short existing position), when the ID of small-cell node is n to the delivery result of described predetermined value, described in this small-cell node, on the basis of existing position, be offset on the descending unit interval that the integral multiple of n obtains after descending unit interval and send control information, wherein, described integral multiple is generally 1 times, general while being only offset n unit interval after the descending unit interval on the basis of described existing position during the up unit interval, just continue n the descending unit interval of skew, until the unit interval after skew is the descending unit interval, till can be used in and sending control information.
Such as, suppose take that subframe adopts time division multiplexing mode to send control information as the unit interval, the up-downgoing proportioning structure that TDD radio frames adopts is: subframe 0 and 5 is descending sub frame, subframe 1 and 6 is special subframe, subframe 2 and 7 is sub-frame of uplink, subframe 3,4 and subframe 8,9 are descending sub frame, the community ID of community 1 is 0, the community ID of community 2 is 1, the community ID of community 3 is 2, utilize community ID to carry out delivery to 10, according to delivery result, determine the time that community sends control information and takies in measurement clearance.
The ID of community 1 is 0 to 10 delivery result, therefore on described existing position, send control information, particularly, when described control channel comprises PBCH and synchronizing channel, on front 4 OFDM symbols of the time slot 1 of the subframe 0 of community 1 in TDD radio frames, send PBCH information, on the 3rd OFDM symbol of subframe 1 and subframe 6(subframe 6 are special subframes) the 3rd OFDM symbol on send PSS, on last OFDM symbol of subframe 0 and last OFDM symbol of subframe 5, send SSS.
Because the ID of community 2 is 1 to 10 delivery result, on the basis of the subframe that therefore community 2 should send control information in community 1, be offset 1 descending sub frame, community 2 should send PBCH information, on the 3rd OFDM symbol of subframe 4 and the 3rd OFDM symbol of subframe 8, sends PSS, on last 1 OFDM symbol of subframe 3 and last OFDM symbol of subframe 8, send SSS on front 4 OFDM symbols of the time slot 1 of subframe 3.
Because the ID of community 3 is 2 to 10 delivery result, on the basis of the subframe that therefore community 3 should send control information in community 1, be offset 2 descending sub frames, be that community 3 should send PBCH information, on the 3rd OFDM symbol of subframe 5 and the 3rd OFDM symbol of subframe 9, send PSS on front 4 OFDM symbols of the time slot 1 of subframe 4, on last 1 OFDM symbol of subframe 4 and last OFDM symbol of subframe 9, send SSS.
Similarly, when take OFDM symbol as the unit interval is while adopting time division multiplexing mode to send control information, can utilize the ID of small-cell node to carry out delivery to described predetermined value, when delivery result is n, the integral multiple descending OFDM symbol that this small-cell node is offset n on the basis of described existing position sends control information.
Example two: in this example, each small-cell node adopts mode three to determine and self sends control information the shared time, being each small-cell node self sends control information the shared time from can be used in random selection in the time that sends described control information in described measurement clearance, for example, when take subframe during as the unit interval, each small-cell node selects from can be used in the subframe that sends described control information in described measurement clearance the shared subframe that self sends control information immediately.
Such as, the up-downgoing proportioning structure that TDD radio frames adopts is still: subframe 0 and 5 is descending sub frame, subframe 1 and 6 is special subframe, subframe 2 and 7 is sub-frame of uplink, subframe 3, 4 and subframe 8, 9 is descending sub frame, community 1 adopts described existing position to send control information, community 2 can be chosen at random on front 4 OFDM symbols of time slot 1 of subframe 5 and send PBCH information, on the 3rd OFDM symbol of the subframe 1 of the next radio frames on the 3rd OFDM symbol of subframe 6 and in measurement clearance, send PSS, on last OFDM symbol of last OFDM symbol of subframe 5 and the subframe 0 of the next radio frames in measurement clearance, send SSS.
Wherein, no matter be that employing mode one, mode two or mode three are determined the unit interval that each small-cell sends control information and takies, be each small-cell configuration control channel, between the unit interval that the different control channels of each small-cell take, interlude interval can be also unfixed, upper as long as each control channel is all configured in the descending unit interval.
For fear of because point between small-cell obtains neighboring BS information, the communication quality of UE being affected greatly, the present invention proposes, described measurement clearance can comprise discrete two above time periods, between described discrete two above time periods, interval is useful on subframe or the OFDM symbol communicating with UE, thereby make each small-cell node described for the subframe or OFDM symbol that communicate with UE in, communicate with UE, described UE communicates with small-cell in for the subframe that communicates to UE or OFDM symbol described.
According to said method provided by the invention, the present invention also provides small-cell node to obtain system and the device of neighboring BS information, specifically please participate in Fig. 2 and Fig. 3.
Fig. 2 is the system composition schematic diagram that small-cell provided by the invention node obtains neighboring BS information.
As shown in Figure 2, this system comprise inking device 201, small-cell node 202 and with the UE203 of small-cell node communication, wherein the number of small-cell node 202 is two above (in Fig. 2, only illustrating two).
Inking device 201, be used to each small-cell node 202 and with the UE203 allocating and measuring gap of each small-cell node communication.
Small-cell node 202, for disconnect all communication the except random access procedure with UE203 in described measurement clearance, and in described measurement clearance, adopt time division multiplexing mode to configure control channel, and send control information on control channel, each small-cell node receives the control information that other small-cell nodes send when self not sending control information, and according to the control information receiving, obtains neighboring BS information.
UE203, for disconnecting with small-cell node all communication the except random access procedure in described measurement clearance.
Wherein, described measurement clearance comprises discrete two above time periods, and between described discrete two above time periods, interval is useful on subframe or the OFDM symbol communicating with UE.
Each small-cell node 202 described for the subframe or OFDM symbol that communicate with UE203 in, communicate with UE203, described UE203 is in the described information that receives node 202 transmission in small-cell in for the subframe that communicates with UE or OFDM symbol.
Fig. 3 is the structure drawing of device that small-cell provided by the invention node obtains neighboring BS information.
As shown in Figure 3, this device comprises configuration module 301, communication module 302, receiver module 303 and detection module 304.
Configuration module 301, for obtaining the measurement clearance information of network side configuration.
Communication module 302, for disconnect with UE all communication the except random access procedure in described measurement clearance, the time of setting in described measurement clearance sends control information on control channel.
Receiver module 303, the control information sending for receive other small-cell nodes when described communication module 302 does not send control information in described measurement clearance.
Detection module 304, obtains neighboring BS information for the control information receiving according to described receiver module 303.
Wherein, different small-cell nodes adopts time division multiplexing mode configuration control channel in described measurement clearance, and sends control information on control channel.
Communication module 302, for determining that according to the community ID of the small-cell node at these communication module 302 places self this communication module self sends control information shared time or determine that according to high-level signaling this communication module 302 self sends control information shared time or self send control information the shared time from can be used in random this communication module 302 of selecting in the time that sends described control information in described measurement clearance.
Wherein, when communication module 302 determines according to the community ID of the small-cell node at these communication module 302 places self time that this communication module 302 self sends control information shared, described communication module 302 by the community ID of the small-cell node at these communication module 302 places self to predetermined value delivery, according to the corresponding relation putting in order that can be used in the unit interval that sends described control information in delivery result and described measurement clearance, determine that this communication module 302 self sends control information the shared time.
Communication module 302, can be for take subframe as the unit interval, determine the different small-cell nodes shared subframe that sends control information in described measurement clearance, wherein, the subframe that different small-cell nodes takies is different, or, OFDM (OFDM) symbol of take is the unit interval, determine the OFDM symbol that different small-cell nodes sends control information shared in described measurement clearance, wherein, the OFDM symbol that different small-cell nodes takies is different.
Described measurement clearance comprises discrete two above time periods, and between described discrete two above time periods, interval is useful on subframe or the OFDM symbol that carries out downlink transfer to UE.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.
Claims (10)
1. small-cell (Small Cell) node obtains a method for neighboring BS information, and described small-cell node does not have for carrying out the X2 interface of small-cell inter-node communication, it is characterized in that, the method comprises:
For each small-cell node and with the UE allocating and measuring gap of each small-cell node communication, in described measurement clearance, between each small-cell node and UE, disconnect all communications except random access procedure, each small-cell node adopts time division multiplexing mode configuration control channel in described measurement clearance, and sends control information on control channel;
In described measurement clearance, each small-cell node receives the control information that other small-cell nodes send when self not sending control information, and according to the control information receiving, obtains neighboring BS information.
2. method according to claim 1, is characterized in that, each small-cell node adopts time division multiplexing mode configuration control channel in described measurement clearance, and sends control information and comprise on control channel:
Each small-cell node determines according to the cell ID of self (ID) the shared time that self sends control information, or, each small-cell node determines according to high-level signaling the shared time that self sends control information, or each small-cell node self sends control information the shared time from can be used in random selection in the time that sends described control information in described measurement clearance.
3. method according to claim 2, is characterized in that, each small-cell node determines that according to the community ID of self the shared time that self sends control information comprises:
Each small-cell node to predetermined value delivery, according to the corresponding relation putting in order that can be used in the unit interval that sends described control information in delivery result and described measurement clearance, is determined the shared time that self sends control information by the community ID of self.
4. according to the method described in the arbitrary claim of claims 1 to 3, it is characterized in that, each small-cell node adopts time division multiplexing mode configuration control channel in described measurement clearance, and sends control information and comprise on control channel:
Take subframe as the unit interval, determine the different small-cell nodes shared subframe that sends control information in described measurement clearance, wherein, the subframe that different small-cell nodes takies is different;
Or OFDM (OFDM) symbol of take is the unit interval, determines the OFDM symbol that different small-cell nodes sends control information shared in described measurement clearance, wherein, the OFDM symbol that different small-cell nodes takies is different.
5. method according to claim 1, is characterized in that, described control channel comprises broadcast channel (PBCH) and/or for sending the synchronizing channel of main synchronizing sequence (PSS) and/or secondary synchronization sequences (SSS).
6. a small-cell node obtains the system of neighboring BS information, described small-cell node is not for carrying out the X2 interface of small-cell inter-node communication, it is characterized in that, this system comprise inking device, small-cell node and with the UE of small-cell node communication, wherein, the number of small-cell node is more than two;
Described inking device, be used to each small-cell node and with the UE allocating and measuring gap of each small-cell node communication;
Described each small-cell node, for disconnect all communication the except random access procedure with UE in described measurement clearance, and in described measurement clearance, adopt time division multiplexing mode to configure control channel, and send control information on control channel, each small-cell node receives the control information that other small-cell nodes send when self not sending control information, and according to the control information receiving, obtains neighboring BS information;
Described UE, for disconnecting with small-cell node all communication the except random access procedure in described measurement clearance.
7. small-cell node obtains a device for neighboring BS information, and described small-cell node does not have for carrying out the X2 interface of small-cell inter-node communication, it is characterized in that, this device comprises configuration module, communication module, receiver module and detection module;
Described configuration module, for obtaining the measurement clearance information of network side configuration;
Described communication module, for disconnect with UE all communication the except random access procedure in described measurement clearance, the time of setting in described measurement clearance sends control information on control channel;
Described receiver module, the control information sending for receive other small-cell nodes when described communication module does not send control information in described measurement clearance;
Described detection module, obtains neighboring BS information for the control information receiving according to described receiver module;
Wherein, different small-cell nodes adopts time division multiplexing mode configuration control channel in described measurement clearance, and sends control information on control channel.
8. device according to claim 7, is characterized in that,
Described communication module, for determining that according to the community ID of the small-cell node at this communication module place self this communication module self sends control information shared time or determine that according to high-level signaling this communication module self sends control information shared time or self send control information the shared time from can be used in random this communication module of selecting in the time that sends described control information in described measurement clearance.
9. device according to claim 8, is characterized in that,
When described communication module determines according to the community ID of the small-cell node at this communication module place self time that this communication module self sends control information shared, described communication module by the community ID of the small-cell node at this communication module place self to predetermined value delivery, according to the corresponding relation putting in order that can be used in the unit interval that sends described control information in delivery result and described measurement clearance, determine that this communication module self sends control information the shared time.
10. device according to claim 9, is characterized in that,
Described communication module, for take subframe as the unit interval, determine the different small-cell nodes shared subframe that sends control information in described measurement clearance, wherein, the subframe that different small-cell nodes takies is different, or, OFDM (OFDM) symbol of take is the unit interval, determine the OFDM symbol that different small-cell nodes sends control information shared in described measurement clearance, wherein, the OFDM symbol that different small-cell nodes takies is different.
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| CN102440050A (en) * | 2010-06-18 | 2012-05-02 | 联发科技股份有限公司 | Method for coordinating transmissions between different communications apparatuses and communication sapparatuses utilizing the same |
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