CN104105164A - Inter-frequency small cell search system, method, discovery signal transmission method and device - Google Patents
Inter-frequency small cell search system, method, discovery signal transmission method and device Download PDFInfo
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- CN104105164A CN104105164A CN201310116094.4A CN201310116094A CN104105164A CN 104105164 A CN104105164 A CN 104105164A CN 201310116094 A CN201310116094 A CN 201310116094A CN 104105164 A CN104105164 A CN 104105164A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses an inter-frequency small cell search system and a method for providing an effective and low power consumption inter-frequency small cell search scheme. The scheme achieves the cooperation of the small cell and a macro small cell to trigger a terminal to perform inter-frequency small cell searching through a small cell base station periodically transmitting DS and a macro base station indicating the terminal to search DS. Because the small cell base station doesn't need to constantly transmit the DS, UE doesn't need to constantly search the small cell, and the UE only performs searching when receiving the indication of the macro base station, the power consumption of the scheme is small. In the mean time, the DS is obtained through encoding according to the only identifier of the small cell, so that the scheme effectively enables the UE to identify the various small cells according to the DS. The invention also discloses a transmission method and a device for transmitting discovery signals.
Description
Technical field
The present invention relates to communication technical field, relate in particular to small-cell search system and method between a kind of frequency, and discovery signals sending method and equipment.
Background technology
In traditional wireless network, due to the restriction of frequency spectrum resource, using higher frequency bandwidth is a visible selection, and meanwhile, due to ambulant enhancing, the coverage that further reduces community will increase the expense of transmission, thereby affects service quality.Therefore, in R12, propose a kind of novel small-cell, be called FSCs or small Cell, as shown in Figure 1.
Small-cell is not traditional community, it will no longer be furnished with the exclusive signaling in community and channel, that is to say, there is not master sync signal (PSS, Primary Synchronization Signal)/auxiliary synchronous signals (SSS, Secondary Synchronization Signal), public reference signal (CRS), Master Information Block (MIB, Master Information Block)/SIB etc.Due in small-cell, chain of command is separated with user's face, for user terminal (UE, User Equipment), small-cell can only be visible by the signaling of macrocell, and the channel between small-cell and UE is set up and release also depends on macrocell, therefore, for the UE under idle pulley, the resident and gravity treatment of community will all be carried out under macrocell.This just means for small-cell and does not need to carry out any page monitoring, thereby has reduced the demand of small-cell planning, allocation and optimization.Meanwhile, because UE does not need small-cell to measure frequently the decoding with common signal channel, also reduced the energy consumption of UE.
Fast and low energy consumption to carry out small-cell search be effectively to improve the key issue of small-cell to macro base station offloading functions.Because small-cell and macrocell are used different frequencies, this just need a kind of effectively, small-cell searching method between the frequency of low-power consumption.
Summary of the invention
The embodiment of the present invention provides small-cell searching method and equipment between a kind of frequency, in order to provide a kind of effectively, small-cell search plan between the frequency of low-power consumption.
The embodiment of the present invention also provides a kind of discovery signals sending method and equipment.
The embodiment of the present invention is by the following technical solutions:
Small-cell search system between a kind of frequency, the base station that comprises at least one small-cell in macro base station and macro base station coverage, wherein: the base station of small-cell, for obtaining discovery signals DS configuration information from operation and maintenance O & M equipment, wherein, the unique identification that at least comprises small-cell in described DS configuration information; Described unique identification is encoded and obtained DS; And on the sending direction of the downstream signal of small-cell, periodically send the described DS generating; Macro base station, is used to indicate DS described in terminal searching.
A small-cell searching method between frequency, comprising: the base station of small-cell obtains discovery signals DS configuration information from operation and maintenance O & M equipment, wherein, at least comprises the unique identification of small-cell in described DS configuration information; Encode and obtain DS described unique identification in the base station of small-cell; The base station of small-cell, on the sending direction of the downstream signal of small-cell, periodically sends the described DS generating; Macro base station indicating terminal in the coverage of living in of small-cell is searched for described DS.
A sending method for discovery signals, comprising: the base station of small-cell obtains discovery signals DS configuration information from operation and maintenance O & M equipment; Wherein, the unique identification that at least comprises small-cell in described DS configuration information; Encode and obtain DS described unique identification in the base station of small-cell; And on the sending direction of the downstream signal of small-cell, periodically send the described DS generating.
A base station for small-cell, comprising: information acquisition unit, for obtaining discovery signals DS configuration information from operation and maintenance O & M equipment; Wherein, the unique identification that at least comprises small-cell in described DS configuration information; Coding unit, encodes and obtains DS for the described unique identification that information acquisition unit is obtained; Transmitting element, for the sending direction of the downstream signal in described small-cell, periodically sends the described DS that coding unit generates.
A base station for macrocell, comprising: indicating member, is used to indicate terminal the discovery signals DS of the base station transmission of small-cell is searched for; Wherein, encode and obtain the unique identification of small-cell in the base station of described DS small-cell; Receiving element, the sign of the described small-cell sending for receiving terminal; Wherein, the sign of described small-cell is that terminal is according to the indication of indicating member, after described DS is searched for, by what the decoding of the DS searching was obtained.
A terminal, comprising: search unit, for according to the indication of macro base station, the discovery signals DS of the base station transmission of small-cell is searched for; Wherein, encode and obtain the unique identification of small-cell in the base station of described DS small-cell; Decoding unit, the DS for searching by decoding search unit, obtains described unique identification; Transmitting element, sends to macro base station for the described unique identification that decoding unit is obtained.
The beneficial effect of the embodiment of the present invention is as follows:
The embodiment of the present invention periodically sends DS by the base station by small-cell, by macro base station, carrys out indicating terminal search DS, has completed and common cooperation of small-cell and macrocell has realized triggering terminal and carry out small-cell between frequency and search for.Because the base station of small-cell is without continuing to send DS, UE is also without constantly small-cell being searched for, and UE only just searches for when obtaining macro base station indication, so this scheme power consumption is less; Meanwhile, because DS encodes and obtains according to the unique identification of small-cell, so this scheme can effectively make UE identify different small-cells according to DS.
Accompanying drawing explanation
Fig. 1 has proposed a kind of schematic diagram of novel small-cell in R12;
The concrete structure schematic diagram of small-cell search system between a kind of frequency that Fig. 2 provides for the embodiment of the present invention;
The idiographic flow schematic diagram of small-cell searching method between a kind of frequency that Fig. 3 provides for the embodiment of the present invention;
The idiographic flow schematic diagram of the sending method of a kind of discovery signals that Fig. 4 provides for the embodiment of the present invention;
The idiographic flow schematic diagram of a kind of execution mode of the scheme that Fig. 5 provides for the embodiment of the present invention;
The concrete structure schematic diagram of the base station of a kind of small-cell that Fig. 6 provides for the embodiment of the present invention.
Embodiment
In the programme of following small-cell, small-cell will dense distribution in macrocell, can corresponding small-cell ID management and small-cell be searched for and will be the key issue that effectively improve its offloading functions.In existing scheme, under the scene for small-cell dense distribution, how effectively to manage small-cell sign, and make UE can carry out fast, with low power between frequency having the need for further discussion in the problems such as small-cell search.
The embodiment of the present invention has provided small-cell search plan between a kind of frequency of quick low energy consumption, by designing a kind of new discovery signals (DS, Discovery Signal), makes UE all adjacent small-cells can under trial once or seldom, be detected.Thereby under low energy consumption, carry out fast small-cell search between frequency.
Below in conjunction with Figure of description, embodiments of the invention are described, should be appreciated that embodiment described herein, only for description and interpretation the present invention, is not limited to the present invention.And in the situation that not conflicting, embodiment and the feature in embodiment in this explanation can be interosculated.
First, the embodiment of the present invention provides small-cell search system between a kind of frequency, and as shown in Figure 2, it comprises the base station of at least one small-cell in macro base station and macro base station coverage to the concrete structure schematic diagram of this system.Below specifically introduce the function of the base station of macro base station and small-cell.
The function of the base station of small-cell mainly comprises following several aspect:
1, from operation and maintenance (O & M, Operation and Maintenance) equipment, obtain DS configuration information.
Wherein, in DS configuration information described here, at least comprise the unique identification of small-cell, as cell physical address (PCI, Physical Cell-ID).This O & M equipment is the upper layer device of base station, and it can manage the information of a plurality of base stations (base station that comprises macro base station and small-cell).Because this O & M equipment is existing equipment in prior art, so the embodiment of the present invention does not repeat it.
In the embodiment of the present invention, in order to reduce the phase mutual interference of the DS sending between the base station of different small-cells, in this configuration information that the base station of small-cell obtains, can also comprise the code character that obtains DS for encoding, and the base station of different small-cells is respectively used to each interblock that coding obtains corresponding DS and meets pairwise orthogonal.
2, the unique identification obtaining is encoded and obtained DS.
Optionally, when DS configuration information comprises code character, can, according to this code character, encode and obtain DS the unique identification obtaining in the base station of small-cell.
3,, on the sending direction of the downstream signal of small-cell, periodically send the DS generating.
Optionally, if the base station of small-cell receives the synchronizing signal that macro base station sends, can determine the delivery time of DS according to this synchronizing signal, and according to this delivery time, periodically send the DS generating.Such as, the base station that synchronizing signal can be used to indicate small-cell sends DS at several fixedly time slots respectively.
The DS that the function of macro base station is mainly to indicate the base station of UE search small-cell to send.
It should be noted that, according to prior art, UE only carries out in connection mode or macro base station appointment in the situation that at UE for the search of small-cell.And the technical scheme providing according to the embodiment of the present invention, the UE that macro base station can trigger in connection mode and idle pulley all searches for small-cell.Particularly, for the UE in connection mode, macro base station can be by the mode to UE transmitting system broadcast message, and indication UE is according to the search rate information comprising in system broadcast information with reference to timing information search DS.And for the UE in idle pulley, macro base station can be by send the mode that Radio Resource is controlled (RRC, Radio Resource Control) signaling to UE, indication UE is according to the search rate information comprising in RRC signaling with reference to timing information search DS.
Because the base station of small-cell is without continuing to send DS, UE is also without constantly small-cell being searched for, and UE only just searches for when obtaining macro base station indication, so this scheme power consumption is less; Meanwhile, due to the uniquely identified uniqueness for encoding, so this scheme can effectively make UE identify different small-cells according to DS.
In addition, the scheme that adopts the embodiment of the present invention to provide, the process that the base station of small-cell generates DS participates in assisting without macro base station, therefore can not expend the too many processing resource of macro base station.
For search system identical inventive concept in small-cell between the frequency providing with the embodiment of the present invention, the embodiment of the present invention also provides small-cell searching method between a kind of frequency, and the idiographic flow schematic diagram of the method as shown in Figure 3, mainly comprises the steps:
Step 31, the base station of small-cell obtains discovery signals DS configuration information from O & M equipment;
Step 32, encoding to the unique identification of the small-cell comprising in DS configuration information in the base station of small-cell, obtains DS;
Optionally, for reducing the phase mutual interference between different DS, this DS can meet: with the exist together coded DS quadrature obtaining in base station of other the arbitrarily small communities in same macrocell coverage area of this small-cell.Such as, in above-mentioned configuration information, also comprise the code character for encoding, and the base station of this code character and above-mentioned other arbitrarily small communities is for encoding while obtaining the code character quadrature of corresponding DS, the code character that the base station of small-cell comprises according to the DS configuration information obtaining is encoded to unique identification, just can be met the DS of above-mentioned condition.
Step 33, the base station of small-cell, on the sending direction of the downstream signal of small-cell, periodically sends the DS generating;
Step 34, the macro base station indication UE that covers the macrocell of small-cell searches for DS.
Particularly, for the UE in connection mode, macro base station can be by the mode to UE transmitting system broadcast message, and indication UE is according to the search rate information comprising in this system broadcast information with reference to timing information search DS; And for the UE in idle pulley, macro base station can be by send the mode of RRC signaling to UE, indication UE is according to the search rate information comprising in this RRC signaling with reference to timing information search DS.
Optionally, when macro base station also sends the synchronizing signal of the delivery time that is used to indicate DS to small-cell, the base station of small-cell can, according to this synchronizing signal, periodically send the DS generating.
For search plan identical inventive concept in small-cell between the frequency providing with the embodiment of the present invention, the embodiment of the present invention also provides a kind of sending method of discovery signals, and the idiographic flow schematic diagram of the method as shown in Figure 4, mainly comprises the steps:
Step 41, the base station of small-cell obtains discovery signals DS configuration information from O & M equipment;
Wherein, the unique identification that at least comprises small-cell in this DS configuration information.In the embodiment of the present invention, the base station of described small-cell refers to the base station of small-cell self, as Home eNodeB, femtocell base station (Femto NodeB) or base station, Microcell (Pico Cell) etc., and not refer to the macro base station of the macrocell that covers small-cell.
Step 42, encode and obtain DS this unique identification obtaining in the base station of small-cell;
The coded DS quadrature obtaining in base station of other arbitrarily small communities that optionally, the macrocell of this DS and this small-cell of covering covers.
Optionally, in configuration information, can also comprise the code character for encoding, and the base station of this code character and above-mentioned other arbitrarily small communities obtains the code character quadrature of corresponding DS for encoding.The specific implementation of this step 42 can comprise: the code character that the base station of small-cell comprises according to this configuration information, and the unique identification obtaining is encoded and obtained DS.
Step 43, the base station of small-cell, on the sending direction of the downstream signal of small-cell, periodically sends the described DS generating.
Optionally, the synchronizing signal that the base station of small-cell can send according to the macro base station that covers the macrocell of this small-cell, periodically sends the DS generating.
The concrete execution mode of take is below example, the such scheme that the detailed description embodiment of the present invention provides application flow in practice.
As shown in Figure 2, in reality for realizing a kind of system configuration schematic diagram of the such scheme that the embodiment of the present invention provides.Based on this system configuration, a plurality of small-cells under macrocell (small Cells) can periodically send a synchronous DS at down direction respectively, thereby UE can more effectively carry out inter-frequency search, under once trial or search are seldom attempted, just can find all adjacent small-cells sign, reach the object of saving energy consumption and finding fast small-cell sign.Particularly, based on this system, a kind of embodiment of the such scheme that the embodiment of the present invention provides comprises following step as shown in Figure 5:
Step 51, the base station of each small-cell of high frequency (small Cells) obtains corresponding configuration data information from O & M equipment respectively, and wherein, configuration data information comprises small-cell sign etc.
Step 52, the base station of each small-cell is respectively according to the configuration data information obtaining, the DS that configuration will be launched.
The coding of the DS designing in this embodiment and small-cell sign has man-to-man mapping relations, and the base station of different small-cells configures respectively and obtains between DS, having orthogonality.In addition the DS that, configuration obtains also needs to meet support down channel quality and measures and support small-cell search.
Step 53, the base station of each small-cell obtains respectively the synchronizing information relevant to the macrocell that covers each small-cell.
In this embodiment, this synchronizing information does not need to use GPS to reach accurate synchronous.For the DS of periodic transmission, each small-cell only need to reach general synchronously just enough by backhaul and the macrocell that covers self.
Step 54, the macro base station indication UE of low frequency carries out small-cell search between frequency.
In this embodiment, this process of step 54 both can be carried out at UE under idle pulley, also can under connection mode, carry out at UE.
Step 55, UE is according to the indication of macro base station, obtains the list of frequency that will search for and initial reference timing information.
For the UE in idle pulley, macro base station can carry the list of frequency that will search for and initial reference timing information in the system broadcast information of macro base station; And for the UE in connection mode, macro base station can carry the list of frequency that will search for and initial reference timing information in RRC signaling.Wherein, what in list of frequency, comprise is the frequency that UE should search for, and the base station that initial reference timing information can comprise small-cell sends the moment and the transmission cycle of DS for the first time.Said system broadcast message and RRC signaling can be considered as the indication that macro base station sends to UE, and UE indicates according to this, just can get the list of frequency of search and initial reference timing information.
Step 56, the base station of each small-cell, according to the indicated information delivery time of synchronizing information obtaining, sends the DS that configuration obtains.
Step 57, UE in the indicated search of the initial reference timing information getting constantly, the enterprising line search of frequency in the list of frequency getting, and the DS searching is decoded, thus obtain relevant small-cell ID.
Therefore due to the orthogonality between different DS, even under the scene of small-cell dense distribution, UE also can relatively easily obtain small-cell sign.In addition, UE, owing to being that between carrying out frequently according to the indicated initial reference timing information of macro base station, small-cell is searched for, therefore can, under trial once or seldom, obtain the DS of all small-cells adjacent with UE transmitting.
Step 58, the small-cell sign that UE obtains decoding reports macro base station.
The scheme providing by embodiment of the present invention application in practice can be found out, because the base station of small-cell is without continuing to send DS, UE is also without constantly small-cell being searched for, and UE only just searches for when obtaining macro base station indication, so this scheme power consumption is less; Meanwhile, due to the uniqueness of the PCI for encoding, so this scheme can effectively make UE identify different small-cells according to DS.In addition, the scheme that adopts the embodiment of the present invention to provide, the process that the base station of small-cell generates DS participates in assisting without macro base station, therefore can not expend the too many processing resource of macro base station.
For search plan identical inventive concept in small-cell between the frequency providing with the embodiment of the present invention, the embodiment of the present invention also provides plurality of devices, below respectively each equipment is introduced:
A base station for small-cell, comprises following function unit as shown in Figure 6:
Information acquisition unit 61, for obtaining discovery signals DS configuration information from O & M equipment; Wherein, the unique identification that at least comprises small-cell in DS configuration information;
Coding unit 62, encodes and obtains DS for the unique identification that information acquisition unit 61 is obtained;
Transmitting element 63, for the sending direction of the downstream signal in small-cell, periodically sends the DS that coding unit 62 generates.
Optionally, if also comprise the code character for encoding in configuration information, and the base station of other arbitrarily small communities that the macrocell of this code character and covering small-cell covers obtains the code character quadrature of corresponding DS for encoding, coding unit 62 specifically can be for so: the code character comprising according to configuration information, the unique identification that information acquisition unit 61 is obtained is encoded and obtained DS.
Optionally, this equipment that the embodiment of the present invention provides can further include: signal receiving unit, the synchronizing signal sending for receiving macro base station.The function based on this signal receiving unit, transmitting element specifically can, for the synchronizing signal receiving according to signal receiving unit, periodically send the described DS that coding unit generates.
The embodiment of the present invention also provides a kind of base station of macrocell, and this equipment comprises:
Indicating member, is used to indicate terminal the discovery signals DS of the base station transmission of small-cell is searched for; Wherein, encode and obtain the unique identification of small-cell in the base station of DS small-cell;
Receiving element, the sign of the small-cell sending for receiving terminal; Wherein, the sign of small-cell is after terminal is searched for DS according to the indication of indicating member, by what the decoding of the DS searching was obtained.
The embodiment of the present invention also provides a kind of terminal, and this terminal comprises:
Search unit, for according to the indication of macro base station, searches for the discovery signals DS of the base station transmission of small-cell; Wherein, encode and obtain the unique identification of small-cell in the base station of DS small-cell;
Decoding unit, the DS for searching by decoding search unit, obtains unique identification;
Transmitting element, sends to macro base station for the unique identification that decoding unit is obtained.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (22)
1. a small-cell search system between frequency, comprises and it is characterized in that the base station of at least one small-cell in macro base station and macro base station coverage:
The base station of small-cell, for obtaining discovery signals DS configuration information from operation and maintenance O & M equipment, wherein, at least comprises the unique identification of small-cell in described DS configuration information; Described unique identification is encoded and obtained DS; And on the sending direction of the downstream signal of small-cell, periodically send the described DS generating;
Macro base station, is used to indicate DS described in terminal searching.
2. the system as claimed in claim 1, is characterized in that, described terminal is the terminal in connection mode; ?
Macro base station specifically for: to described terminal transmitting system broadcast message, to indicate described terminal according to the search rate information comprising in described system broadcast information and to search for described DS with reference to timing information.
3. the system as claimed in claim 1, is characterized in that, described terminal is the terminal in idle pulley; ?
Macro base station specifically for: to described terminal, send radio resource control RRC signaling, to indicate described terminal according to the search rate information comprising in described RRC signaling and to search for described DS with reference to timing information.
4. the system as described in as arbitrary in claim 1～3, is characterized in that, described system comprises the base station of a plurality of small-cells; ?
The described DS pairwise orthogonal that the base station of a plurality of small-cells sends respectively.
5. system as claimed in claim 4, is characterized in that, also comprises the code character for encoding in described configuration information, and the base station of described a plurality of small-cells is respectively used to the code character pairwise orthogonal that coding obtains corresponding DS; ?
, specifically for the code character comprising according to described configuration information, encode and obtain described DS described unique identification in the base station of small-cell.
6. the system as claimed in claim 1, is characterized in that,
Macro base station is also for synchronizing signal from the delivery time be used to indicate described DS to small-cell that send;
The base station of small-cell also for: receive the synchronizing signal that macro base station sends; And according to described synchronizing signal, periodically send the described DS generating.
7. a small-cell searching method between frequency, is characterized in that, comprising:
The base station of small-cell obtains discovery signals DS configuration information from operation and maintenance O & M equipment, wherein, at least comprises the unique identification of small-cell in described DS configuration information;
Encode and obtain DS described unique identification in the base station of small-cell;
The base station of small-cell, on the sending direction of the downstream signal of small-cell, periodically sends the described DS generating;
The macro base station indicating terminal that covers the macrocell of described small-cell is searched for described DS.
8. method as claimed in claim 7, is characterized in that, described terminal is the terminal in connection mode; ?
Macro base station indicating terminal is searched for described DS, specifically comprises:
Macro base station is to described terminal transmitting system broadcast message, to indicate described terminal according to the search rate information comprising in described system broadcast information and to search for described DS with reference to timing information.
9. method as claimed in claim 7, is characterized in that, described terminal is the terminal in idle pulley; ?
Macro base station indicating terminal is searched for described DS, specifically comprises:
Macro base station sends radio resource control RRC signaling to described terminal, to indicate described terminal according to the search rate information comprising in described RRC signaling and to search for described DS with reference to timing information.
10. the method as described in as arbitrary in claim 7～9, is characterized in that the coded DS quadrature obtaining in base station of other the arbitrarily small communities in described DS and macro base station coverage.
11. methods as claimed in claim 10, is characterized in that, also comprise the code character for encoding in described configuration information, and the base station of described code character and other arbitrarily small communities obtains the code character quadrature of corresponding DS for encoding; ?
Encoding and obtain DS described unique identification in the base station of small-cell, specifically comprises:
The code character comprising according to described configuration information, encodes and obtains described DS described unique identification.
12. methods as claimed in claim 7, is characterized in that, also comprise:
Macro base station sends the synchronizing signal of the delivery time that is used to indicate described DS to small-cell; ?
The base station of small-cell periodically sends the described DS of generation, specifically comprises:
The base station of small-cell, according to described synchronizing signal, periodically sends the described DS generating.
The sending method of 13. 1 kinds of discovery signals, is characterized in that, comprising:
The base station of small-cell obtains discovery signals DS configuration information from operation and maintenance O & M equipment; Wherein, the unique identification that at least comprises small-cell in described DS configuration information;
Encode and obtain DS described unique identification in the base station of small-cell; And
On the sending direction of the downstream signal of small-cell, periodically send the described DS generating.
14. methods as claimed in claim 13, is characterized in that, the coded DS quadrature obtaining in base station of other arbitrarily small communities that the macrocell of described DS and the described small-cell of covering covers.
15. methods as claimed in claim 13, is characterized in that, it is characterized in that, also comprise the code character for encoding in described configuration information, and the base station of described code character and other arbitrarily small communities obtains the code character quadrature of corresponding DS for encoding; Wherein, described arbitrarily small community and the described small-cell coverage of same macro base station that exists together; ?
Encoding and obtain DS described unique identification in the base station of described small-cell, specifically comprises:
The code character that the base station of described small-cell comprises according to described configuration information, encodes and obtains DS described unique identification.
16. methods as claimed in claim 13, is characterized in that, described method also comprises:
The base station of small-cell receives the synchronizing signal that macro base station sends; ?
The base station of small-cell periodically sends the described DS of generation, specifically comprises: the base station of small-cell, according to described synchronizing signal, periodically sends the described DS generating.
The base station of 17. 1 kinds of small-cells, is characterized in that, comprising:
Information acquisition unit, for obtaining discovery signals DS configuration information from operation and maintenance O & M equipment; Wherein, the unique identification that at least comprises small-cell in described DS configuration information;
Coding unit, encodes and obtains DS for the described unique identification that information acquisition unit is obtained;
Transmitting element, for the sending direction of the downstream signal in described small-cell, periodically sends the described DS that coding unit generates.
18. base stations as claimed in claim 17, is characterized in that, the coded DS quadrature obtaining in base station of other arbitrarily small communities that the macrocell of described DS and the described small-cell of covering covers.
19. base stations as claimed in claim 17, is characterized in that, it is characterized in that, also comprise the code character for encoding in described configuration information, and the base station of described code character and other arbitrarily small communities obtains the code character quadrature of corresponding DS for encoding; Wherein, described arbitrarily small community and the described small-cell coverage of same macro base station that exists together; ?
Coding unit is specifically for the code character comprising according to described configuration information, and the described unique identification that information acquisition unit is obtained is encoded and obtained DS.
20. base stations as claimed in claim 17, is characterized in that, described equipment also comprises:
Signal receiving unit, the synchronizing signal sending for receiving macro base station; ?
The described synchronizing signal of transmitting element specifically for receiving according to signal receiving unit, periodically sends the described DS that coding unit generates.
21. 1 kinds of macro base stations, is characterized in that, comprising:
Indicating member, is used to indicate terminal the discovery signals DS of the base station transmission of small-cell is searched for; Wherein, encode and obtain the unique identification of small-cell in the base station of described DS small-cell;
Receiving element, the sign of the described small-cell sending for receiving terminal; Wherein, the sign of described small-cell is that terminal is according to the indication of indicating member, after described DS is searched for, by what the decoding of the DS searching was obtained.
22. 1 kinds of terminals, is characterized in that, comprising:
Search unit, for according to the indication of macro base station, searches for the discovery signals DS of the base station transmission of small-cell; Wherein, encode and obtain the unique identification of small-cell in the base station of described DS small-cell;
Decoding unit, the DS for searching by decoding search unit, obtains described unique identification;
Transmitting element, sends to macro base station for the described unique identification that decoding unit is obtained.
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| CN201310116094.4A CN104105164A (en) | 2013-04-03 | 2013-04-03 | Inter-frequency small cell search system, method, discovery signal transmission method and device |
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| CN102869053A (en) * | 2011-07-07 | 2013-01-09 | 上海贝尔股份有限公司 | Method and device for finding small cells in heterogeneous communication network |
| CN102883408A (en) * | 2012-09-21 | 2013-01-16 | 中兴通讯股份有限公司 | Method and device for discovering micro cell |
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| US20120087318A1 (en) * | 2010-10-07 | 2012-04-12 | Futurewei Technologies, Inc. | System and Method for Search Space Reconfiguration in a Communications System |
| CN102869053A (en) * | 2011-07-07 | 2013-01-09 | 上海贝尔股份有限公司 | Method and device for finding small cells in heterogeneous communication network |
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