CN104144474B - The methods, devices and systems that the descending multi-antenna adaptive of LTE system is sent - Google Patents
The methods, devices and systems that the descending multi-antenna adaptive of LTE system is sent Download PDFInfo
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- CN104144474B CN104144474B CN201310170164.4A CN201310170164A CN104144474B CN 104144474 B CN104144474 B CN 104144474B CN 201310170164 A CN201310170164 A CN 201310170164A CN 104144474 B CN104144474 B CN 104144474B
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Abstract
The present invention discloses a kind of methods, devices and systems sent for the descending multi-antenna adaptive of LTE system.Wherein in the method sent for the descending multi-antenna adaptive of LTE system, cell searching control information is sent with 2 antenna port modes, when receiving the cell access request of user terminal transmission, inquiry request is sent to user terminal with 2 antenna port modes；Receive the inquiry response information that user terminal is sent, the multi-antenna port pattern information included according to inquiry response information determines the multi-antenna port pattern that user terminal can be supported, the multi-antenna port pattern that can be supported according to user terminal, data message and associated reference signal are sent to user terminal.The present invention selects corresponding multi-antenna port pattern to send downlink data and associated reference signal by inquiring about the tenability of user terminal, so as on the basis of the LTE system performance that descending 4 antenna is sent is given full play to, effectively compatibility only supports the LTE terminal of 2 antenna ports, enhances Consumer's Experience.
Description
Technical field
The present invention relates to the communications field, the method, apparatus of more particularly to a kind of descending multi-antenna adaptive transmission of LTE system
With and system.
Background technology
Sent for descending multiple antennas, LTE（Long Term Evolution, Long Term Evolution）System standard defines
Tri- kinds of sending modes of 2X2,4X2 and 4X4.Wherein, 2X2 is basic downlink sending mode；Can be with compared to 2X2 patterns, 4X2 patterns
More figuration gains, multi-user's gain and scheduling gains are brought, but product realizes that difficulty is larger, and 4X4 patterns propose to terminal
Requirements at the higher level, recent product realize that possibility is low.
At present, 2X2 sending modes are realized in LTE system equipment and end product, and popularity is high, property
It can tend towards stability；4X2 sending modes are still in research and development and test phase, and its network side maturity and popularity are preferable, terminal
Side popularity is relatively low, and actual performance needs further to be verified.
It is expected that China's large scale deployment LTE network in 2014, the factors such as covering, capacity are considered, very likely portion of operator
Affix one's name to the descending transmission system of 4 antennas.In view of the popularity of 4X2 terminals is relatively low, thus operator very likely consider initial stage " 2X2,
The Evolution Strategies of 4X2 " terminals, later stage full 4X2 terminals.However, in the 4X2LTE network systems of standard, its broadcast channel, control
Channel processed and Traffic Channel employ 4X2 downlink sending modes, therefore 2X2 terminals will be unable to the 4X2LTE of normal access standard
Network system.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of side sent for the descending multi-antenna adaptive of LTE system
Method, device and and system.The present invention inquires about user terminal to descending transmission antenna by base station before downlink service data is sent
The support situation of port number, so as to which base station can select descending transmission mode according to the tenability of user terminal, therefore can
On the basis of descending 4 antenna port LTE system performance advantage is ensured, it is ensured that 2XN terminals and 4XN terminals can access system simultaneously
Normal work.
According to an aspect of the present invention, there is provided a kind of method sent for the descending multi-antenna adaptive of LTE system, bag
Include：
Cell searching control information is sent with 2 antenna port modes, so that user terminal utilizes cell searching control information
Carry out cell searching；
When receiving the cell access request of user terminal transmission, sent and looked into user terminal with 2 antenna port modes
Request is ask, wherein user terminal sends cell access request after cell searching is completed, and inquiry request is used to inquire about user terminal
The multi-antenna port pattern that can be supported；
The inquiry response information that user terminal is sent is received, wherein inquiry response information, which includes user terminal, to support
Multi-antenna port pattern information；
The multi-antenna port pattern that user terminal can support is determined according to the multi-antenna port pattern information；
The multi-antenna port pattern that can be supported according to user terminal, data message and coherent reference are sent to user terminal
Signal.
Preferably, the multi-antenna port pattern that can be supported according to user terminal, to user terminal send data message and
The step of associated reference signal, includes：
If user terminal can support 4 antenna port modes, with 4 antenna end mouth molds in the data area of LTE system
Formula sends data message and 4 antenna port reference signals to user terminal；
If user terminal can support 2 antenna port modes, with 2 antenna end mouth molds in the data area of LTE system
Formula sends data message and 2 antenna port reference signals to user terminal.
Preferably, the reference of the third and fourth antenna port data demodulation is remained in advance in the control area of LTE system
Signal location.
According to another aspect of the present invention, there is provided a kind of method sent for the descending multi-antenna adaptive of LTE system, bag
Include：
Cell searching control information is received with 2 antenna port modes, to carry out cell using cell searching control information
Search；
After cell searching is completed, access request is sent to cell base station；
The inquiry request of base station transmission is received with 2 antenna port modes, wherein base station is receiving user terminal transmission
Inquiry request is sent with 2 antenna port modes during cell access request, inquiry request is used to inquire about what user terminal can be supported
Multi-antenna port pattern；
The multi-antenna port pattern that inquiry user terminal can be supported；
Inquiry response information is sent to base station, wherein inquiry response information includes the multiple antennas that user terminal can be supported
Port mode information, so that the multi-antenna port pattern that base station can be supported according to user terminal sends data message and related ginseng
Examine signal；
The multi-antenna port pattern that can be supported with user terminal receives the data message and coherent reference letter that base station is sent
Number.
Preferably, the multi-antenna port pattern that can be supported with user terminal receives data message and the correlation that base station is sent
The step of reference signal, includes：
If user terminal can support 4 antenna port modes, with 4 antenna end mouth molds in the data area of LTE system
Formula receives the data message and 4 antenna port signals that base station is sent；
If user terminal can support 2 antenna port modes, with 2 antenna end mouth molds in the data area of LTE system
Formula receives the data message and 2 antenna port signals that base station is sent.
According to another aspect of the present invention, there is provided a kind of base station sent for the descending multi-antenna adaptive of LTE system, bag
Include：
First transmitting element, for sending cell searching control information with 2 antenna port modes, so that user terminal utilizes
Cell searching control information carries out cell searching；
First receiving unit, for receiving the cell access request of user terminal transmission, wherein user terminal is small in completion
Cell access request is sent after area searching, when receiving the cell access request of user terminal transmission, instruction second sends single
Member sends inquiry request with 2 antenna port modes to user terminal；
Second transmitting element, for the instruction according to the first receiving unit, sent with 2 antenna port modes to user terminal
Inquiry request, inquiry request are used to inquire about the multi-antenna port pattern that user terminal can be supported；
Second receiving unit, for receiving the inquiry response information of user terminal transmission, wherein wrapped in inquiry response information
Include the multi-antenna port pattern information that user terminal can be supported；
Pattern determining unit, for determine that user terminal can support according to the multi-antenna port pattern information more days
Line port mode, and indicate that data transmission unit is sent out according to the multi-antenna port pattern that user terminal can be supported to user terminal
Send data message and associated reference signal；
Data transmission unit, for the instruction according to pattern determining unit, the multiple antennas that can be supported according to user terminal
Port mode, data message and associated reference signal are sent to user terminal.
Preferably, pattern determining unit indicates data specifically when it is determined that user terminal can support 4 antenna port mode
Transmitting element sends data message and 4 antenna references with 4 antenna port modes in the data area of LTE system to user terminal
Signal；When it is determined that user terminal can support 2 antenna port mode, instruction data transmission unit is in the data field of LTE system
In domain data message and 2 antenna reference signals are sent with 2 antenna port modes to user terminal.
Preferably, the reference of the third and fourth antenna port data demodulation is remained in advance in the control area of LTE system
Signal location.
According to another aspect of the present invention, there is provided a kind of user's end sent for the descending multi-antenna adaptive of LTE system
End, it is characterised in that including：
3rd receiving unit, for receiving cell searching control information with 2 antenna port modes；
Cell search unit, for carrying out cell searching using cell searching control information；
3rd transmitting element, for after cell search unit completes cell searching, access request to be sent to cell base station；
4th receiving unit, for receiving the inquiry request of base station transmission with 2 antenna port modes, wherein base station is receiving
To user terminal send cell access request when with 2 antenna port modes send inquiry request, inquiry request be used for inquire about use
The multi-antenna port pattern that family terminal can be supported；
Query unit, the multi-antenna port pattern that can be supported for inquiring about user terminal；
4th transmitting element, for sending inquiry response information to base station, wherein inquiry response information includes user's end
The multi-antenna port pattern information that can be supported is held, so that the multi-antenna port pattern that base station can be supported according to user terminal is sent out
Send data message and associated reference signal；The multi-antenna port pattern that indicating data receipt unit can be supported with user terminal connects
Receive data message and associated reference signal that base station is sent；
Data receipt unit, for the instruction according to the 4th transmitting element, the multiple antennas end that can be supported with user terminal
Mouth mold formula receives the data message and associated reference signal that base station is sent.
Preferably, data receipt unit is specifically when user terminal can support 4 antenna port mode, in LTE system
The data message and 4 antenna reference signals of base station transmission are received in data area with 4 antenna port modes；Can in user terminal
When supporting 2 antenna port mode, the data for receiving base station transmission with 2 antenna port modes in the data area of LTE system are believed
Breath and 2 antenna reference signals.
According to another aspect of the present invention, there is provided a kind of system sent for the descending multi-antenna adaptive of LTE system, bag
Base station and user terminal are included, wherein：
Base station, for sending cell searching control information with 2 antenna port modes, so that user terminal utilizes cell searching
Control information carries out cell searching；When receive user terminal transmission cell access request when, with 2 antenna port modes to
Family terminal sends inquiry request, and inquiry request is used to inquire about the multi-antenna port pattern that user terminal can be supported；Receive user
The inquiry response information that terminal is sent, wherein inquiry response information include the multi-antenna port pattern that user terminal can be supported
Information；The multi-antenna port pattern that user terminal can support is determined according to the multi-antenna port pattern information, according to user
The multi-antenna port pattern that terminal can be supported, data message and associated reference signal are sent to user terminal；
User terminal, for receiving cell searching control information with 2 antenna port modes, utilize cell searching control information
Carry out cell searching；After cell searching is completed, access request is sent to cell base station；Base station is received with 2 antenna port modes
The inquiry request of transmission, the multi-antenna port pattern that inquiry user terminal can be supported；Inquiry response information is sent to base station, its
Middle inquiry response information includes the multi-antenna port pattern information that user terminal can be supported；It can be supported with user terminal
Multi-antenna port pattern receives the data message and associated reference signal that base station is sent.
Preferably, base station is the base station that any of the above-described embodiment is related to, and any of the above-described embodiment of user terminal is related to
User terminal.
The multi-antenna port pattern that the present invention can be supported by inquiring about user terminal when user terminal accesses cell, and
According to Query Result, corresponding multi-antenna port pattern is selected to send downlink data and associated reference signal.So as to fully send out
On the basis of waving the LTE system main advantage performance that descending 4 antenna is sent, effectively compatibility only supports that the LTE of 2 antenna ports is whole
End, optimization enhance Consumer's Experience.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the schematic diagram of the descending multi-antenna adaptive sending method one embodiment of LTE system of the present invention.
Fig. 2 is that reference signal sends schematic diagram under 2 antenna port modes of the invention.
Fig. 3 is that reference signal sends schematic diagram under 4 antenna port modes of the invention.
Fig. 4 is the schematic diagram of the descending another embodiment of multi-antenna adaptive sending method of LTE system of the present invention.
Fig. 5 is the schematic diagram of base station one embodiment of the present invention.
Fig. 6 is the schematic diagram of user terminal one embodiment of the present invention.
Fig. 7 is the schematic diagram that the descending multi-antenna adaptive of LTE system of the present invention sends system one embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Do not limited the scope of the invention up to formula and numerical value.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part for specification.
In shown here and discussion all examples, any occurrence should be construed as merely exemplary, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is the schematic diagram of the descending multi-antenna adaptive sending method one embodiment of LTE system of the present invention.Preferably,
The method and step of the present embodiment can be performed by base station.
Step 101, cell searching control information is sent with 2 antenna port modes, so that user terminal utilizes cell searching
Control information carries out cell searching.
Wherein, LTE cell searchings include detection PSCH（Physical Synchronisation Channel, physics are same
Walk channel）, detection SSCH（Secondary Synchronisation Channel, auxiliary synchronization channel）, detection descending reference
Four steps of signal and read broadcast channel.
Step 102, it is whole to user with 2 antenna port modes when receiving the cell access request of user terminal transmission
End sends inquiry request.
Wherein user terminal sends cell access request after cell searching is completed, and inquiry request is used to inquire about user terminal
The multi-antenna port pattern that can be supported.
Step 103, the inquiry response information that user terminal is sent is received, wherein inquiry response information includes user terminal
The multi-antenna port pattern information that can be supported.
Step 104, the multi-antenna port mould that user terminal can support is determined according to the multi-antenna port pattern information
Formula.
Step 105, the multi-antenna port pattern that can be supported according to user terminal, to user terminal send data message and
Associated reference signal.
The method provided based on the above embodiment of the present invention, by inquiring about user terminal energy when user terminal accesses cell
The multi-antenna port pattern enough supported, and according to Query Result, downlink data letter is sent using corresponding multi-antenna port pattern
Breath and associated reference signal.So as on the basis of the LTE system main advantage performance that descending 4 antenna is sent is given full play to, have
Effect compatibility only supports the LTE terminal of 2 antenna ports, and optimization enhances Consumer's Experience.
Preferably, the above-mentioned multi-antenna port pattern that can be supported according to user terminal, data letter is sent to user terminal
The step of breath and associated reference signal, includes：
If user terminal can support 4 antenna port modes, with 4 antenna end mouth molds in the data area of LTE system
Formula sends data message and 4 antenna port reference signals to user terminal.In addition, control channel（PHICH（Physical
Hybrid ARQ Indicator Channel, physical mixing retransmission indicating chanel）、PCFICH（Physical Control
Format Indicator Channel, Physical Control Format Indicator Channel）、PDCCH（Physical Downlink
Control Channel, Physical Downlink Control Channel））Descending sending method be consistent with broadcast channel, i.e., using being based on
The transmission diversity technique of 2 antenna ports.
If user terminal can support 2 antenna port modes, with 2 antenna end mouth molds in the data area of LTE system
Formula sends data message and 2 antenna port reference signals to user terminal.In addition, control channel（PHICH、PCFICH、PDCCH）
Descending sending method be consistent with broadcast channel, that is, use the transmission diversity technique based on 2 antenna ports.
Preferably, the reference of the third and fourth antenna port data demodulation is remained in advance in the control area of LTE system
Signal location.
Fig. 2 is that reference signal sends schematic diagram under 2 antenna port modes of the invention.Fig. 3 is 4 antenna port modes of the invention
Lower reference signal sends schematic diagram.In figs. 2 and 3, the three row dash areas in left side are control signal bearing area, upper right side
Dash area be business datum region.
In the prior art, all 2 antenna port configurations of downlink reference signal in LTE system control area, do not enter
Row resource reservation.In fact, under existing 2 antenna port mode, either data area or control area, uplink/downlink antenna
Reference signal is the configuration of 2 antenna ports.Equally, under existing 4 antenna port mode, either data area still controls
Region, uplink/downlink antenna reference signal are the configuration of 4 antenna ports.
And from Fig. 2 and Fig. 3 as can be seen that under 2 antenna port modes and 4 antenna port modes, in the control of LTE system
Remain for the reference signal position of the third and fourth antenna port data demodulation in region processed in advance, wherein reserved location is by dark color
Shade block identification.This reserve is due to that compatible 4 antennas are sent caused by the compromise selection sent with 2 antennas.Wherein c1 and
C2 is the reference signal position for the demodulation of first, second antenna port data.That is, under adaptive model, uplink/downlink antenna ginseng
Examine being configured to for signal：Control area configures for 2 antenna ports（Using c1 and c2, c3 and c4 is reserved）.If terminal is supported 4 days
Line port mode, data area configure for 4 antenna ports；If terminal supports 2 antenna port modes, data area is 2 antenna ends
Mouth configuration.
Fig. 4 is the schematic diagram of the descending another embodiment of multi-antenna adaptive sending method of LTE system of the present invention.Preferably,
This method step can be performed by user terminal.
Step 401, cell searching control information is received with 2 antenna port modes.
Step 402, cell searching is carried out using cell searching control information.
Step 403, after cell searching is completed, access request is sent to cell base station.
Step 404, the inquiry request of base station transmission is received with 2 antenna port modes, wherein base station is receiving user's end
Hold and send inquiry request during the cell access request sent with 2 antenna port modes, inquiry request is used to inquire about user terminal energy
The multi-antenna port pattern enough supported.
Step 405, the multi-antenna port pattern that inquiry user terminal can be supported.
Step 406, inquiry response information is sent to base station, wherein inquiry response information, which includes user terminal, to support
Multi-antenna port pattern information, so that the multi-antenna port pattern that base station can be supported according to user terminal sends data message
And associated reference signal.
Step 407, the multi-antenna port pattern that can be supported with user terminal receives data message and the phase that base station is sent
Close reference signal.
The method provided based on the above embodiment of the present invention, by inquiring about user terminal energy when user terminal accesses cell
The multi-antenna port pattern enough supported, and according to Query Result, corresponding multi-antenna port pattern may be selected and send downlink data
Information and associated reference signal.So that on the basis of the LTE system main advantage performance that descending 4 antenna is sent is given full play to,
Effectively compatibility only supports the LTE terminal of 2 antenna ports, and optimization enhances Consumer's Experience.
Preferably, the above-mentioned multi-antenna port pattern that can be supported with user terminal receive data message that base station sends and
The step of associated reference signal, includes：
If user terminal can support 4 antenna port modes, with 4 antenna end mouth molds in the data area of LTE system
Formula receives the data message and 4 antenna port signals that base station is sent；
If user terminal can support 2 antenna port modes, with 2 antenna end mouth molds in the data area of LTE system
Formula receives the data message and 2 antenna port signals that base station is sent.
Fig. 5 is the schematic diagram of base station one embodiment of the present invention.As shown in figure 5, base station includes：
First transmitting element 501, for sending cell searching control information with 2 antenna port modes, so as to user terminal
Cell searching is carried out using cell searching control information.
First receiving unit 502, for receiving the cell access request of user terminal transmission, wherein user terminal is completed
Cell access request is sent after cell searching, when receiving the cell access request of user terminal transmission, instruction second is sent
Unit 503 sends inquiry request with 2 antenna port modes to user terminal.
Second transmitting element 503, it is whole to user with 2 antenna port modes for the instruction according to the first receiving unit 502
End sends inquiry request, and inquiry request is used to inquire about the multi-antenna port pattern that user terminal can be supported.
Second receiving unit 504, for receiving the inquiry response information of user terminal transmission, wherein in inquiry response information
The multi-antenna port pattern information that can be supported including user terminal.
Pattern determining unit 505, for determining what user terminal can be supported according to the multi-antenna port pattern information
Multi-antenna port pattern, and indicate data transmission unit 506 according to the multi-antenna port pattern that user terminal can be supported to
Family terminal sends data message and associated reference signal.
Data transmission unit 506, for the instruction according to pattern determining unit 505, it can be supported according to user terminal
Multi-antenna port pattern, data message and associated reference signal are sent to user terminal.
The base station provided based on the above embodiment of the present invention, by inquiring about user terminal energy when user terminal accesses cell
The multi-antenna port pattern enough supported, and according to Query Result, corresponding multi-antenna port pattern may be selected and send downlink data
Information and associated reference signal.So that on the basis of the LTE system main advantage performance that descending 4 antenna is sent is given full play to,
Effectively compatibility only supports the LTE terminal of 2 antenna ports, and optimization enhances Consumer's Experience.
Preferably, pattern determining unit 505 indicates specifically when it is determined that user terminal can support 4 antenna port mode
Data transmission unit sends data message and 4 antennas with 4 antenna port modes in the data area of LTE system to user terminal
Reference signal；When it is determined that user terminal can support 2 antenna port mode, number of the instruction data transmission unit in LTE system
According in region data message and 2 antenna reference signals are sent with 2 antenna port modes to user terminal.
Preferably, the reference of the third and fourth antenna port data demodulation is remained in advance in the control area of LTE system
Signal location.
Fig. 6 is the schematic diagram of user terminal one embodiment of the present invention.As shown in fig. 6, user terminal includes：
3rd receiving unit 601, for receiving cell searching control information with 2 antenna port modes.
Cell search unit 602, for carrying out cell searching using cell searching control information.
3rd transmitting element 603, for after cell search unit 602 completes cell searching, sending and connecing to cell base station
Enter request.
4th receiving unit 604, for receiving the inquiry request of base station transmission with 2 antenna port modes, wherein base station exists
Inquiry request is sent with 2 antenna port modes when receiving the cell access request of user terminal transmission, inquiry request is used to look into
Ask the multi-antenna port pattern that user terminal can be supported.
Query unit 605, the multi-antenna port pattern that can be supported for inquiring about user terminal.
4th transmitting element 606, for sending inquiry response information to base station, wherein inquiry response information includes user
The multi-antenna port pattern information that terminal can be supported, the multi-antenna port pattern that can be supported according to user terminal so as to base station
Send data message and associated reference signal；Indicate the multi-antenna port that data receipt unit 607 can be supported with user terminal
Pattern receives the data message and associated reference signal that base station is sent.
Data receipt unit 607, for the instruction according to the 4th transmitting element 606, it can be supported with user terminal more
Antenna port mode receives the data message and associated reference signal that base station is sent.
The user terminal provided based on the above embodiment of the present invention, it is whole by inquiring about user when user terminal accesses cell
The multi-antenna port pattern that can be supported is held, and according to Query Result, may be selected in corresponding data transmission region using corresponding
Multi-antenna port pattern send downlink data information and associated reference signal.So as to give full play to what descending 4 antenna was sent
On the basis of LTE system main advantage performance, effectively compatibility only supports the LTE terminal of 2 antenna ports, and optimization enhances user's body
Test.
Preferably, data receipt unit 607 is specifically when user terminal can support 4 antenna port mode, in LTE system
Data area in 4 antenna port modes receive base station send data message and 4 antenna reference signals；In user terminal energy
When enough supporting 2 antenna port mode, the data of base station transmission are received with 2 antenna port modes in the data area of LTE system
Information and 2 antenna reference signals.
Fig. 7 is the schematic diagram that the descending multi-antenna adaptive of LTE system of the present invention sends system one embodiment.Such as Fig. 7 institutes
To show, system includes base station 701 and user terminal 702, wherein：
Base station 701, for sending cell searching control information with 2 antenna port modes, so that user terminal utilizes cell
Search for control information and carry out cell searching；When receiving the cell access request of user terminal transmission, with 2 antenna port modes
Inquiry request is sent to user terminal, inquiry request is used to inquire about the multi-antenna port pattern that user terminal can be supported；Receive
The inquiry response information that user terminal is sent, wherein inquiry response information include the multi-antenna port that user terminal can be supported
Pattern information；The multi-antenna port pattern that user terminal can support is determined according to the multi-antenna port pattern information, according to
The multi-antenna port pattern that user terminal can be supported, data message and associated reference signal are sent to user terminal.
User terminal 702, for receiving cell searching control information with 2 antenna port modes, controlled using cell searching
Information carries out cell searching；After cell searching is completed, access request is sent to cell base station；Received with 2 antenna port modes
The inquiry request that base station is sent, the multi-antenna port pattern that inquiry user terminal can be supported；Inquiry response letter is sent to base station
Breath, wherein inquiry response information includes the multi-antenna port pattern information that user terminal can be supported；Can with user terminal
The multi-antenna port pattern of support receives the data message and associated reference signal that base station is sent.
The system provided based on the above embodiment of the present invention, by inquiring about user terminal energy when user terminal accesses cell
The multi-antenna port pattern enough supported, and according to Query Result, may be selected in corresponding data transmission region using corresponding more
Antenna port mode sends downlink data information and associated reference signal.So as to give full play to the LTE systems of descending 4 antenna transmission
On the basis of main advantage performance of uniting, effectively compatibility only supports the LTE terminal of 2 antenna ports, and optimization enhances Consumer's Experience.
It should be noted that for brevity, a user terminal is only gived in the figure 7.Those skilled in the art
It will be appreciated that it may include that multiple user terminals interact with base station in system.
Preferably, base station is the base station that any embodiment is related in Fig. 5, and user terminal is that any embodiment is related in Fig. 6
User terminal.
The present invention is giving full play to the LTE system main advantage performance of descending 4 antenna transmission relative to prior art
On the basis of, the operatively compatible LTE terminal for only supporting 2 antenna ports, optimization enhances Consumer's Experience.
One of ordinary skill in the art will appreciate that hardware can be passed through by realizing all or part of step of above-described embodiment
To complete, by program the hardware of correlation can also be instructed to complete, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
Description of the invention provides for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be to more preferably illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The present invention is solved so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (12)
- A kind of 1. method sent for the descending multi-antenna adaptive of LTE system, it is characterised in that including：Cell searching control information is sent with 2 antenna port modes, so that user terminal is carried out using cell searching control information Cell searching；When receiving the cell access request of user terminal transmission, sending inquiry to user terminal with 2 antenna port modes please Ask, wherein user terminal sends cell access request after cell searching is completed, and inquiry request can for inquiring about user terminal The multi-antenna port pattern of support；Receive user terminal send inquiry response information, wherein inquiry response information include user terminal can support it is more Antenna port mode information；The multi-antenna port pattern that user terminal can support is determined according to the multi-antenna port pattern information；The multi-antenna port pattern that can be supported according to user terminal, send data message to user terminal and coherent reference is believed Number, so as to which the multi-antenna port mode adaptive that can be supported according to user terminal adjusts the descending multi-antenna port of LTE system Pattern.
- 2. according to the method for claim 1, it is characterised in that：The multi-antenna port pattern that can be supported according to user terminal, data message and associated reference signal are sent to user terminal The step of include：If user terminal can support 4 antenna port modes, in the data area of LTE system with 4 antenna port modes to User terminal sends data message and 4 antenna port reference signals；If user terminal can support 2 antenna port modes, in the data area of LTE system with 2 antenna port modes to User terminal sends data message and 2 antenna port reference signals.
- 3. method according to claim 1 or 2, it is characterised in that：Remain for the reference signal position of the third and fourth antenna port data demodulation in advance in the control area of LTE system.
- A kind of 4. method sent for the descending multi-antenna adaptive of LTE system, it is characterised in that including：Cell searching control information is received with 2 antenna port modes, to carry out cell searching using cell searching control information；After cell searching is completed, access request is sent to cell base station；The inquiry request of base station transmission is received with 2 antenna port modes, wherein base station is receiving the cell of user terminal transmission Inquiry request is sent with 2 antenna port modes during access request, inquiry request is used to inquire about more days that user terminal can be supported Line port mode；The multi-antenna port pattern that inquiry user terminal can be supported；Inquiry response information is sent to base station, wherein inquiry response information includes the multi-antenna port that user terminal can be supported Pattern information, so that the multi-antenna port pattern that base station can be supported according to user terminal sends data message and coherent reference letter Number, so as to which the multi-antenna port mode adaptive that can be supported according to user terminal adjusts the descending multi-antenna port of LTE system Pattern；The multi-antenna port pattern that can be supported with user terminal receives the data message and associated reference signal that base station is sent.
- 5. according to the method for claim 4, it is characterised in that：The multi-antenna port pattern that can be supported with user terminal receives the data message that base station sends and associated reference signal Step includes：If user terminal can support 4 antenna port modes, connect in the data area of LTE system with 4 antenna port modes Receive data message and 4 antenna port signals that base station is sent；If user terminal can support 2 antenna port modes, connect in the data area of LTE system with 2 antenna port modes Receive data message and 2 antenna port signals that base station is sent.
- A kind of 6. base station sent for the descending multi-antenna adaptive of LTE system, it is characterised in that including：First transmitting element, for sending cell searching control information with 2 antenna port modes, so that user terminal utilizes cell Search for control information and carry out cell searching；First receiving unit, for receiving the cell access request of user terminal transmission, wherein user terminal is searched in completion cell Cell access request is sent after rope, when receiving the cell access request of user terminal transmission, the second transmitting element of instruction is with 2 Antenna port mode sends inquiry request to user terminal；Second transmitting element, for the instruction according to the first receiving unit, sent and inquired about to user terminal with 2 antenna port modes Request, inquiry request are used to inquire about the multi-antenna port pattern that user terminal can be supported；Second receiving unit, for receiving the inquiry response information of user terminal transmission, wherein inquiry response information includes using The multi-antenna port pattern information that family terminal can be supported；Pattern determining unit, for determining multiple antennas end that user terminal can support according to the multi-antenna port pattern information Mouth mold formula, and indicate that data transmission unit sends number according to the multi-antenna port pattern that user terminal can be supported to user terminal It is believed that breath and associated reference signal；Data transmission unit, for the instruction according to pattern determining unit, the multi-antenna port that can be supported according to user terminal Pattern, data message and associated reference signal are sent to user terminal, so as to the multiple antennas end that can be supported according to user terminal The descending multi-antenna port pattern of mouth mode adaptive adjustment LTE system.
- 7. base station according to claim 6, it is characterised in that：Specifically when it is determined that user terminal can support 4 antenna port mode, instruction data transmission unit exists pattern determining unit In the data area of LTE system data message and 4 antenna reference signals are sent with 4 antenna port modes to user terminal；True When 2 antenna port mode can be supported by determining user terminal, instruction data transmission unit is in the data area of LTE system with 2 days Line port mode sends data message and 2 antenna reference signals to user terminal.
- 8. the base station according to claim 6 or 7, it is characterised in that：Remain for the reference signal position of the third and fourth antenna port data demodulation in advance in the control area of LTE system.
- A kind of 9. user terminal sent for the descending multi-antenna adaptive of LTE system, it is characterised in that including：3rd receiving unit, for receiving cell searching control information with 2 antenna port modes；Cell search unit, for carrying out cell searching using cell searching control information；3rd transmitting element, for after cell search unit completes cell searching, access request to be sent to cell base station；4th receiving unit, for receiving the inquiry request of base station transmission with 2 antenna port modes, wherein base station is receiving use Inquiry request is sent with 2 antenna port modes during the cell access request that family terminal is sent, inquiry request is used to inquire about user's end Hold the multi-antenna port pattern that can be supported；Query unit, the multi-antenna port pattern that can be supported for inquiring about user terminal；4th transmitting element, for sending inquiry response information to base station, wherein inquiry response information includes user terminal energy The multi-antenna port pattern information enough supported, so that the multi-antenna port pattern that base station can be supported according to user terminal sends number It is believed that breath and associated reference signal, so as to which the multi-antenna port mode adaptive that can be supported according to user terminal adjusts LTE systems The descending multi-antenna port pattern of system；The multi-antenna port pattern that indicating data receipt unit can be supported with user terminal receives The data message and associated reference signal that base station is sent；Data receipt unit, for the instruction according to the 4th transmitting element, the multi-antenna port mould that can be supported with user terminal Formula receives the data message and associated reference signal that base station is sent.
- 10. user terminal according to claim 9, it is characterised in that：Data receipt unit specifically when user terminal can support 4 antenna port mode, in the data area of LTE system with 4 antenna port modes receive the data message and 4 antenna reference signals that base station is sent；2 antenna ends can be supported in user terminal During mouth mold formula, data message and the 2 antennas ginseng that base station is sent are received with 2 antenna port modes in the data area of LTE system Examine signal.
- 11. a kind of system sent for the descending multi-antenna adaptive of LTE system, it is characterised in that whole including base station and user End, wherein：Base station, for sending cell searching control information with 2 antenna port modes, so that user terminal is controlled using cell searching Information carries out cell searching；It is whole to user with 2 antenna port modes when receiving the cell access request of user terminal transmission End sends inquiry request, and inquiry request is used to inquire about the multi-antenna port pattern that user terminal can be supported；Receive user terminal The inquiry response information of transmission, wherein inquiry response information include the multi-antenna port pattern letter that user terminal can be supported Breath；The multi-antenna port pattern that user terminal can support is determined according to the multi-antenna port pattern information, it is whole according to user The multi-antenna port pattern that can be supported is held, data message and associated reference signal are sent to user terminal, so as to according to user The descending multi-antenna port pattern for the multi-antenna port mode adaptive adjustment LTE system that terminal can be supported；User terminal, for receiving cell searching control information with 2 antenna port modes, carried out using cell searching control information Cell searching；After cell searching is completed, access request is sent to cell base station；Base station is received with 2 antenna port modes to send Inquiry request, the multi-antenna port pattern that can support of inquiry user terminal；Inquiry response information is sent to base station, wherein looking into Asking response message includes the multi-antenna port pattern information that user terminal can be supported；Can be supported with user terminal more days Line port mode receives the data message and associated reference signal that base station is sent.
- 12. system according to claim 11, it is characterised in that：Base station is the base station that any one of claim 6-8 is related to；User terminal is the user terminal that any one of claim 9-10 is related to.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1389029A (en) * | 2000-08-22 | 2003-01-01 | 三星电子株式会社 | Transmit diversity apparatus and method using two or more antennas |
| CN103081388A (en) * | 2010-09-03 | 2013-05-01 | 夏普株式会社 | Terminal device, base station device, communication system, and communication method |
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| KR101984972B1 (en) * | 2012-06-22 | 2019-09-03 | 삼성전자주식회사 | Method and apparatus for transmitting and receiving a reference signal in a wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1389029A (en) * | 2000-08-22 | 2003-01-01 | 三星电子株式会社 | Transmit diversity apparatus and method using two or more antennas |
| CN103081388A (en) * | 2010-09-03 | 2013-05-01 | 夏普株式会社 | Terminal device, base station device, communication system, and communication method |
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