CN107852668A - Access the method, apparatus and equipment of multiaerial system - Google Patents
Access the method, apparatus and equipment of multiaerial system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
Abstract
The present invention provides a kind of method, apparatus and equipment for accessing multiaerial system, and methods described includes：During user equipment (UE) accesses cell, determine whether the UE has access to idle district, wherein, the idle district is the cell of no user access；If the UE can not access idle district, new idle district is generated；Instruction message is sent to the UE, so that the UE accesses the new idle district according to the instruction message.The above method be applied to multiaerial system in, using the above method formed cell structure in, control channel can carry out joint precoding based on cell-level pilot tone in minizone, solve the problems, such as control channel capacity be limited and user class pilot-frequency expense.
Description
The present invention relates to the communication technology more particularly to a kind of method, device and equipments for accessing multiaerial system.
Multiple antennas is called array antenna.It in space according to multiple vibration members of certain geometric arrangements by forming.Each vibration member can independently received and transmitting signal.Multi-antenna technology is broadly divided into MIMO (Multi-Input&Multi-Output, multiple-input and multiple-output) technology and intelligent antenna technology two major classes.Nowadays, insider has reached common understanding, and multi-antenna technology is institute's mainstream technology to be used in future mobile communication system (3G, B3G, 4G and LTE) and broadband wireless access system.It is all to solve existing wireless communications system preferable alternative of problems that its many advantages such as power system capacity is big, the availability of frequency spectrum is high, signal transmission rate is fast etc..
In multi-antenna systems, it is based on aerial position division of cells, the certain range of each MPS process, the UE (User Equipment, user equipment) in cell coverage area is linked into the cell that its own is located at.UE can demodulate the control channel of place cell to obtain the essential information of data channel, such as available modulation coding scheme, resource distribution mode etc. control information, then data channel is demodulated further according to these control information, so as to communicate in the cell of access with respective antenna.
Summary of the invention
The embodiment of the present invention provides a kind of method, device and equipment for accessing multiaerial system, to form a kind of cell structure that can be realized control channel space division multiplexing.
In a first aspect, in the multiaerial system, being weighted using inter-cell united precoding to cell-level pilot tone and control channel the embodiment of the invention provides a kind of method for accessing multiaerial system；
The method, comprising:
During terminal device accesses cell, determine whether the terminal device has access to already existing idle district in access system, wherein the idle district is the cell of no user access；
If the terminal device is unable to already existing idle district in access system, the new free time is generated
Cell；
Instruction message is sent to the terminal device, so that the terminal device accesses the new idle district according to the instruction message.
Optionally, the method also includes: terminal device is linked into the already existing idle district of system directly or by busy cell, wherein, the already existing idle district is that the channel state information of the terminal device accessed according to busy cell each in system generates in system, and the busy cell is to have the cell of at least one user access.
It is optionally, described to generate new idle district, comprising:
Obtain the channel state information of the terminal device；
Inter-cell united precoding is determined according to the channel state information；
Cell attribute information is determined according to the inter-cell united precoding.
Optionally, described during terminal device accesses cell, determine whether the terminal device can already existing idle district in access system, comprising:
Cell access interaction is carried out with terminal device；
Determine the terminal device access is idle district or busy cell.
It is optionally, described to carry out cell access interaction with terminal device, comprising:
Radio resource control RRC, which is carried out, with the terminal device connect foundation interaction；
Correspondingly, the determination terminal device access is idle district or busy cell, comprising:
After receiving the RRC connection setup complete message that the terminal device is sent, determine the terminal device access is idle district or busy cell.
Optionally, described to send instruction message to the terminal device, so that the terminal device accesses the new idle district according to the instruction message, comprising:
The RRC connection release message of the busy cell is sent to the terminal device；
It carries out cell reselection with the terminal device to interact, so that the terminal device accesses the new idle district.
It is optionally, described to carry out cell access interaction with terminal device, comprising:
Attach, which is carried out, with the terminal device connect foundation interaction；
Correspondingly, the determination terminal device access is idle district or busy cell, comprising:
After receiving the Attach that the terminal device is sent and completing message, determine the terminal device access is idle district or busy cell.
Optionally, described to send instruction message to the terminal device, so that the terminal device accesses the new idle district according to the instruction message, comprising:
RRC connection reconfiguration is sent to the terminal device and sets message, and the RRC connection reconfiguration sets the cell identity information in message comprising the new idle district；
It receives the RRC connection reconfiguration that the terminal device is sent and sets response message, so that the terminal device is linked into the new idle district according to the cell identity information.
Optionally, described during terminal device accesses cell, determine whether the terminal device has access to already existing idle district in system, comprising:
Receive the random access request that the terminal device is sent；
Determine whether the terminal device has access to already existing idle district in system.
Optionally, described to send instruction message to the terminal device, so that the terminal device accesses the new idle district according to the instruction message, comprising:
Random access response is sent to the terminal device, includes the cell identity information of the new idle district in the random access response, so that the terminal device accesses the new idle district according to the cell identity information.
Second aspect, the embodiment of the present invention provide a kind of device for accessing multiaerial system, which is deployed in multiaerial system, are weighted using inter-cell united precoding to cell-level pilot tone and control channel；
Described device, comprising:
Determining module, for determining whether the terminal device has access to already existing idle district in access system during terminal device accesses cell, wherein the idle district is the cell of no user access；
New cell generation module, when being unable to already existing idle district in access system for the terminal device, generates new idle district；
First AM access module, for sending instruction message to the terminal device, so that the terminal device accesses the new idle district according to the instruction message.
Optionally, the device further include: the second AM access module, for terminal device to be linked into the already existing idle district of system directly or by busy cell, wherein, the already existing idle district is that the channel state information of the terminal device accessed according to busy cell each in system generates in system
The busy cell is to have the cell of at least one user access.
Optionally, the new cell generation module includes:
Information acquisition unit, for obtaining the channel state information of the terminal device；
Determination unit is encoded, for determining inter-cell united precoding according to the channel state information；
Cell generation unit, for determining cell attribute information according to the inter-cell united precoding.
Optionally, the determining module, comprising:
Interactive unit, for carrying out cell access interaction with terminal device；
First attribute determining unit is idle district or busy cell for determine the terminal device access.
Optionally, the interactive unit is specifically used for connecting foundation interaction with terminal device progress radio resource control RRC；
First attribute determining unit is idle district or busy cell specifically for after receiving the RRC connection setup complete message that the terminal device is sent, determine the terminal device access.
Optionally, first AM access module, specifically for sending the RRC connection release message of the busy cell to the terminal device；And interacted for carrying out cell reselection with the terminal device, so that the terminal device accesses the new idle district.
Optionally, the interactive unit is specifically used for connecting foundation interaction with terminal device progress Attach；
First attribute determining unit, specifically for after receiving the Attach that the terminal device is sent and completing message, determine the terminal device access is idle district or busy cell.
Optionally, first AM access module sets message specifically for sending RRC connection reconfiguration to the terminal device, and the RRC connection reconfiguration sets the cell identity information in message comprising the new idle district；And response message is set for receiving the RRC connection reconfiguration that the terminal device is sent, so that the terminal device is linked into the new idle district according to the cell identity information.
Optionally, the determining module, the random access request sent specifically for receiving the terminal device；And for determining whether the terminal device has access to idle district.
Optionally, first AM access module, it include the cell identity information of the new idle district in the random access response, so that the terminal device accesses the new idle district according to the cell identity information specifically for sending random access response to the terminal device.
The third aspect, the embodiment of the invention provides a kind of access devices, and the equipment application is in multiple antennas system
In system, comprising:
Communication interface, memory and processor and communication bus, wherein the communication interface, the memory and the processor are communicated by the communication bus；
The memory is used to execute the program of the memory storage for storing program, the processor；When space division multiplexing processing unit operation, the processor runs program, and described program includes:
During terminal device accesses cell, determine whether the terminal device has access to already existing idle district in access system, wherein the idle district is the cell of no user access；
If the terminal device is unable to already existing idle district in access system, new idle district is generated；
Instruction message is sent to the terminal device, so that the terminal device accesses the new idle district according to the instruction message.
Optionally, the equipment is the enhancing base station eNB in LTE system, the base station BS in WiFi wireless access points AP or worldwide interoperability for microwave accesses WiMAX in wireless fidelity systems.
The method, device and equipment of the access multiaerial system of the embodiment of the present invention, it can limit and only access a terminal device in each cell, control channel can carry out joint precoding in minizone based on cell-level pilot tone, there is no the channel estimation problems of original system cell-level pilot tone, so control channel and data channel can do joint precoding by minizone based on cell-level pilot tone simultaneously and carry out space division multiplexing, both it had solved the problems, such as that control channel capacity was limited, and had also solved the problems, such as user class pilot-frequency expense.
Fig. 1 is a kind of network architecture schematic diagram of multiaerial system in the prior art；
Fig. 2 is the schematic diagram of data channel space division multiplexing in the network architecture shown in Fig. 1；
Fig. 3 is a kind of possible structural schematic diagram of multiaerial system applied by the embodiment of the present invention；
Fig. 4 is cell type transition diagram in multiaerial system applied by the embodiment of the present invention；
Fig. 5 is the flow chart of the embodiment of the method one of present invention access multiaerial system；
Fig. 6 is the flow chart of the embodiment of the method two of present invention access multiaerial system；
Fig. 7 is a kind of signaling process figure of specific implementation of embodiment of the method two shown in Fig. 6；
Fig. 8 is the flow chart of the embodiment of the method three of present invention access multiaerial system；
Fig. 9 is a kind of signaling process figure of specific implementation of embodiment of the method three shown in Fig. 8；
Figure 10 is the flow chart of the embodiment of the method four of present invention access multiaerial system；
Figure 11 is a kind of signaling process figure of specific implementation of embodiment of the method four shown in Figure 10；
Figure 12 is the structural schematic diagram of the Installation practice one of present invention access multiaerial system；
The position Figure 13 present invention accesses the structural schematic diagram of the Installation practice two of multiaerial system；
Figure 14 is the structural schematic diagram of access device embodiment one of the present invention.
Multi-antenna technology becomes the important directions of future mobile communication system and broadband wireless access system development due to having many advantages, such as power system capacity is big, the availability of frequency spectrum is high, signal transmission rate is fast.For example, MIMO technology has become the key technology in LTE (Long Term Evolution, long term evolution) system, and significantly increase the spectrum efficiency and message transmission rate of system.
In order to realize the reasonable distribution of system resource and the rational management of customer service, cell division mode is used to make UE access into multiaerial system in multiaerial system.
In multiaerial system, a kind of mode of small Division is position division of cells to be arranged based on antenna, each cell all has certain signal cover, and the UE in same cell coverage area can be accessed in the same cell that its own is located at.
After UE access to cell where it, the control channel of its place cell can be demodulated to obtain the control information of data channel, such as available modulation coding scheme and resource distribution mode etc. control information, then data channel is demodulated according to these control information, so as to be communicated in the cell of access with corresponding antenna.
A kind of network architecture schematic diagram of multiaerial system in the prior art as shown in figure 1.By taking user 0 in Fig. 1 and user 5 as an example, user 0 and user 5 are located in the signal cover of cell 0 and cell 2, and user 0 and user 5 are respectively connected in cell 0 and cell 2.When communication, user 0 and user 5 receive control channel and data channel from the cell being respectively located at respectively.
In order to improve system user capacity, the space division multiplexing of multi-user data channel can be carried out in multiaerial system using inter-cell united precoding, wherein weight used in inter-cell united precoding can be generated according to the subscriber channel status information for participating in space division multiplexing.
Specifically, in the network architecture shown in Fig. 1 as shown in Figure 2 data channel space division multiplexing schematic diagram.
In Fig. 2, still by taking user 0 and user 5 as an example, user 0 and user 5 are a user equipment in cell 0 and cell 2 respectively, and user 0 and user 5 receive control letter from the cell at respective place respectively
Road, data channel then from 0~cell of cell 2, realize the space division multiplexing of data channel.
Therefore, above-mentioned small Division can realize the space division multiplexing of data channel using inter-cell united precoding mode, and then there is still a need for carry out natural space division multiplexing in a manner of the isolation of minizone space for control channel.
The cell-level pilot tone of different community is different, and the user class pilot tone of different UE is different.The demodulation of control channel is generally based on cell-level pilot tone, such as PDCCH (Physical Downlink Control Channel in LTE R8/9/10, Physical Downlink Control Channel) it is demodulated based on CRS (Cell Reference Signal, cell common pilots signal).Data channel demodulation can both be based on cell-level pilot tone, such as PDSCH (the Physical Downlink Shared Channel in LTE R8/9/10 under TM4, Physical Downlink Shared Channel), it can also be based on the PDSCH under TM7 in user class pilot tone, such as LTE R8/9/10.
Since the capacity of each cell control channels is limited (such as PDCCH at most can only be only with 3 symbols in LTE R8/9/10), if control channel is also want to do joint precoding by minizone, same joint precoding just must be also done to cell-level pilot tone in order to demodulate control channel, at this time if multiple UE have been involved in space division multiplexing in a cell, because the UE in cell uses identical cell-level pilot tone, therefore it can not be distinguished by precoding weight, the channel estimation of pilot tone will have interference, influence the accuracy of channel estimation, it finally results in the decline of control channel demodulation performance or even can not demodulate, so control channel can not be done joint precoding by minizone and carry out space division multiplexing, it can not be weighted by precoding and promote control channel capacity.
As previously described, data channel can be demodulated based on user class pilot tone, since the user class pilot tone of each UE is different, so the problem of cell-level pilot channel estimation is not present, and being continuously increased with antenna number, the UE number that can be multiplexed by joint precoding can be also continuously increased, but since control channel cannot do similar multiplexing, so the capacity of control channel just will limit the UE number of multiplexing.
Since data channel has used user class pilot tone, lead to both to have had user class pilot tone in system that there is also cell-level pilot tones, so increasing the pilot-frequency expense of this system.
It, can a kind of new cell division mode in multiaerial system in order to solve the problems, such as that control channel is difficult to realize space division multiplexing.Different from above-mentioned division mode, in this new division mode, grouping no longer is fixed by cell in antenna, the antenna that each cell uses is determined by joint precoding weight, wherein the weight of joint precoding is generated according to the subscriber channel status information for participating in space division multiplexing, cell can be moved with the movement of UE, in addition to this, further define the UE quantity that cell allows to access.
As Fig. 3 shows a kind of possible structural representation of multiaerial system applied by the embodiment of the present invention
Figure.
As can be seen from Figure 3, as only one most UE in each cell, that is cell 0, there was only user 0 in cell 1 and cell 2 respectively, when 2 one UE of user 1 and user, it is equivalent to the coverage area for reducing each cell, the accurate covering of user class is accomplished, at this time due to only one UE of each cell, cell-level pilot tone can do joint precoding by minizone and carry out Whole frequency band space division multiplexing, there is no the channel estimation problems of original system cell-level pilot tone, so control channel and data channel can do joint precoding by minizone based on cell-level pilot tone simultaneously and carry out space division multiplexing, both solved the problems, such as that control channel capacity was limited, also user class pilot-frequency expense is solved the problems, such as.
In the embodiment of the present invention, two kinds of cells can be divided into for small according to the UE number accessed in cell, the cell of UE is not known as idle district, has the cell of a UE to be known as busy cell.If Fig. 4 shows cell type transition diagram in multiaerial system applied by the embodiment of the present invention, figure 4, it is seen that idle district can be used for accessing new UE, busy cell is reformed into after accessing new UE in idle district；With should busy cell disconnect the access of all UE when, busy cell is then turned into idle district.
Cell framework explanation based on above-mentioned multiaerial system, the embodiment of the invention provides a kind of method for supporting UE access multiaerial system, in this method when UE requests access multiaerial system, it can be determined that whether the UE has access into idle district；If current UE cannot be linked into idle district, then system can generate an idle district, and indicate that current UE accesses to idle district, it is possible thereby to the UE quantity accessed in the coverage area and cell of control cell during UE access, it obtains meeting cell framework shown in Fig. 3, and then multiaerial system is supported to carry out space division multiplexing to control channel, solve the problem of that multiaerial system control channel capacity is limited while also can solve user class pilot-frequency expense.
Specifically, the embodiment of the invention provides the embodiments of the method for following access multiaerial system.
The embodiment of the present invention can be applied to the communication systems such as cellular system, wifi, wimax, accordingly, network element involved in the embodiment of the present invention is Long-Term Evolution base station LTE eNB, WiFi AP (WiFi WirelessAccessPoint, the wireless access points in Wireless Fidelity), WiMAX BS (base station in Base Station of Worldwide Interoperability for Microwave Access worldwide interoperability for microwave accesses) etc..For convenience, following embodiments are illustrated by taking LTE eNB as an example.
Embodiment one
As shown in figure 5, the executing subject of the present embodiment method can be LTE eNB, specifically include that
Step S11: during UE access cell, determine whether UE has access to already existing idle district in system.
UE will access multiaerial system, it is necessary to by cell searching, obtain the processes such as cell system information, random access, RRC (Radio Resource Control, wireless heterogeneous networks) connection and Attach connection.
Wherein, the main purpose of cell searching includes: 1) to obtain frequency and sign synchronization with cell；2) system-frame timing, the i.e. initial position of downlink frame are obtained；3) PCI (Physical-layer Cell Identity, physical-layer cell identifier) of cell is determined.
UE, with after a cell synchronous, receives the system message of the Cell Broadcast CB by cell searching selection, and starts the process of access cell using the system message received.
Wherein, during UE access cell, eNB can determine whether UE has access in system in already existing idle district, such as UE passes through cell searching, the cell for selecting access is already existing idle district in a system, and UE and cell are provided with the condition of access, eNB can determine that UE has access in the idle district at this time, and can directly be accessed；In another example, UE passes through cell searching, the cell for selecting access is a busy cell, but there is also the idle districts with UE access condition in current system, eNB can allow UE to pass through cell reselection at this time, switching and etc. be linked into the current existing idle district of system, it can also determine that UE has access into idle district in such cases, preferably, already existing idle district is that the channel state information of the terminal device accessed according to busy cell each in system generates in system, the busy cell is to have the cell of at least one user access.
It is a busy cell when UE selects access, and when the idle district with access conditions is also not present in current system, then eNB determines that UE can not access idle district.
Step S12: if UE is unable to already existing idle district in access system, new idle district is generated.
When eNB determines that current UE is unable to already existing idle district in access system, new idle district is generated, and current UE is linked into new idle district by subsequent instruction step.
The method that new idle district is generated in the embodiment of the present invention can select according to actual needs different methods to generate.In order to which the process to UE access multiaerial system is described in detail, a kind of method for generating new idle district is provided in the present embodiment as an example, wherein specifically, the step of generating new idle district may include: the channel state information for obtaining UE；Determine that minizone joins according to channel state information
Close precoding；Cell attribute information is determined according to inter-cell united precoding.Wherein, cell attribute information can be for example frequency point etc. the content relevant to cell is defined of Physical Cell Identifier PCI, cell.
Step S13: instruction message is sent to UE, so that UE accesses new idle district according to instruction message.
After eNB generates new idle district, instruction message is sent to UE, UE is linked into new idle district according to the instruction message received.
Utilize the method for the above-mentioned access multiaerial system of the present embodiment, limit only one UE in each cell, control channel can carry out joint precoding in minizone based on cell-level pilot tone, there is no the channel estimation problems of original system cell-level pilot tone, so control channel and data channel can do joint precoding by minizone based on cell-level pilot tone simultaneously and carry out space division multiplexing, both it had solved the problems, such as that control channel capacity was limited, and had also solved the problems, such as user class pilot-frequency expense.
In the method for the access multiaerial system of the embodiment of the present invention, in order to make UE finally be linked into idle district, form cell structure shown in Fig. 3, during UE requests to access, eNB determines whether UE has access to idle district first, the method wherein judged can be that eNB and UE carry out cell access interaction, such as carry out RRC access interaction, Attach access interaction and random access interaction.During eNB and UE carries out access interaction, whether can not only determine UE access is idle district, and the channel state information of UE can also be got during UE access, to provide Informational support to generate new idle district.
It will illustrate the method for UE access multiaerial system from the different access phases of UE by specific embodiment below.
Embodiment two
In order to which the UE access of access will be requested into idle district, what eNB determined UE access in the RRC connection procedure of UE in the present embodiment is idle district or busy cell, and eNB obtains the channel state information of UE in the access procedure of UE；When eNB determine UE access be non-idle district when, after the completion of the RRC of UE connection, new idle district is generated according to the UE channel state information got, and indicate that the UE for being currently accessed busy cell is connected in new idle district by re-selection procedure.
As shown in fig. 6, the executing subject of the method for the UE access multiaerial system of the present embodiment can be LTE eNB, main processing steps include:
Step S21: RRC is carried out with UE and connect foundation interaction.
Step S22: after the RRC connection setup complete message for receiving UE transmission, determine that UE connects
What is entered is idle district or busy cell.
Step S23: after determine UE access is non-idle district, new idle district is generated.
It should be noted that eNB determines that UE has already accessed in busy cell after UE completion is connect with the RRC of busy cell in this step, two UE have been included at least in busy cell at this time.
In the present embodiment, eNB obtains the channel state information of UE during UE is established and connect with the RRC of busy cell, and new idle district can be generated according to the channel state information of UE, it is preferred that the wave beam of the used antenna in new idle district is directed at current UE.
Step S24: the RRC connection release message of busy cell is sent to UE.
After eNB determines that UE establishes connection by RRC connection and busy cell, eNB sends connection release message instruction UE disconnection to UE and connect with the RRC of current busy cell, if only there are two UE in the busy cell of UE access, then after UE disconnects the connection with busy cell, busy cell becomes the cell for only accessing a UE.
Step S25: cell reselection is carried out with UE and is interacted, so that the idle district that UE access is new.
After UE release and the connection of busy cell, re-search for cell, since newly-generated idle district is generated according to the channel state information of UE dedicated for the new cell matched with current UE, so in the cell that UE is searched, the access conditions of UE is best suitable for according to the new idle district that UE channel state information generates, UE is linked into new idle district by cell reselection access process.
It carries out RRC and connect interacting, generating new idle district and by the signaling process figure of the new idle district of UE access as Fig. 7 shows UE and eNB, comprising:
S201:UE sends RRC connection request (RRC Connection Request) to eNB, wherein can carry the initial marking of UE in RRC connection request and establish the information such as reason.
After S202:eNB receives the RRC connection request of UE transmission, RRC is sent to UE and establishes connection message (RRC Connection Setup), wherein establishing in RRC may include the complete configuration information for establishing the busy cell RRC connection of UE and request in connection message.
After S203:UE completion is connect with the RRC of busy cell, RRC connection setup complete message (RRC Connection Setup Complete) is sent to eNB.
After S204:eNB receives RRC connection setup complete message, confirm that UE connect completion with busy cell RRC, thus according to new idle district is being generated with UE channel state information obtained in UE exchange process.
After S205:eNB generates new idle district, release is sent to UE and is connect with busy cell RRC
Message (RRC Connection Release).
After S206~S208:UE receives the message of release RRC connection, re-search for cell, since newly-generated cell is generated according to the channel state information of UE, generally most meet the access conditions of UE, so UE is linked into newly-generated cell by cell searching, and start and connect with the RRC of new idle district, wherein UE and new idle district RRC connection procedure are identical as above-mentioned S201~S203 step, repeat no more.
Embodiment three
In order to which the UE access of access will be requested into idle district, what eNB determined UE access in the Attach connection procedure of UE in the present embodiment is idle district or busy cell, and eNB obtains the channel state information of UE in the access procedure of UE；When eNB determine UE access be non-idle district when, after the completion of the Attach of UE connection, new idle district is generated according to the UE channel state information got, and indicates that the UE for being currently accessed busy cell is switched in new idle district by switching flow.
As shown in figure 8, the executing subject of the method for the UE access multiaerial system of the present embodiment can be LTE eNB, main processing steps include:
Step S31: Attach is carried out with UE and connect foundation interaction.
Step S32: after the Attach for receiving UE transmission completes message, determine UE access is idle district or busy cell；
It should be noted that eNB determines that UE has already accessed in busy cell after UE completion is connect with the Attach of busy cell in this step, two UE have been included at least in busy cell at this time.
Step S33: after determine UE access is non-idle district, new idle district is generated；
In the embodiment of the present invention, eNB obtains the channel state information of UE during UE is established and connect with the Attach of busy cell, and new idle district can be generated according to the channel state information of UE, it is preferred that the wave beam of the used antenna in new idle district is directed at current UE.
Step S34: RRC connection reconfiguration is sent to UE and sets message, RRC connection reconfiguration sets the identification information in message comprising new idle district.
It is connect in view of UE establishes Attach with multiaerial system, obtain the default bearing of system, in order to be switched to UE in new idle district from the busy cell being currently accessed, eNB sends RRC connection reconfiguration to UE and sets message, and thus UE is switched in new idle district with being reconfigured by RRC.
Wherein, eNB contains the mark letter of new idle district into the RRC reconfiguration message that UE is sent
Breath, such as PCI.
After UE receives RRC reconfiguration message, according to the identification information of the idle district in this message, the connection of RRC is re-established with idle district, and send RRC connection reconfiguration to eNB and set response message.
Step S35: it receives the RRC connection reconfiguration that UE is sent and sets response message, by UE access to new idle district.
After the RRC connection reconfiguration that eNB receives UE transmission sets response message, confirmation UE establishes RRC with new idle district and connect, and determines the new idle district of UE access.
If Fig. 9 is shown, UE and eNB carry out Attach and connects interacting, generating new idle district and by the signaling process figure of the new idle district of UE access, comprising:
After S301:UE completion is connect with the RRC of busy cell, RRC connection is sent to eNB and completes message, wherein carrying Attach connection request within the message.
S302:eNB sends the message for establishing RRC connection to UE.
S303:UE and busy cell are established after RRC connect, and send RRC connection completion message to eNB.
S304:eNB sends RR connection to UE and reconfigures message, and Attach default bearing information is wherein carried in the message.
S305:UE sends RRC connection to eNB and reconfigures message.
S306:UE sends Attach connection to eNB and completes message.
After S307:eNB receives Attach connection completion message, new idle district is generated according to the UE channel state information got in Attach connection procedure
S308:eNB sends RRC connection to UE and reconfigures message.
S309:UE response RRC connection reconfigures message, is switched to new idle district.
Example IV
In the multiaerial system cut-in method of embodiment two and embodiment three, eNB enables UE and busy cell be attached interaction to obtain UE channel state information.ENB obtains the channel state information of UE in the connection interactive process of UE and busy cell, however since the access procedure of UE and busy cell needs to occupy longer time, so that obtaining, the time occupied by UE channel state information is longer, and the time for finally making UE finally be linked into new idle district also can relatively be grown.In order to shorten the time of the new idle district of UE access, whether determine UE access in UE accidental access stage in the present embodiment is idle district, and the channel state information of UE is obtained in the random access procedure of UE, and the idle district to generate new provides Informational support.
As shown in Figure 10, the executing subject of the method for the access multiaerial system of this implementation can be LTE eNB, and main processing steps include:
Step S41: the random access request that UE is sent is received.
Step S42: the idle district having access in system with the presence or absence of UE is determined.
Step S43: when capableing of the idle district of random access there is no UE in system, new idle district is generated.
Step S44: random access response is sent to UE, includes the identification information of new idle district in random access response, so that UE accesses new idle district according to identification information.
The multiple antennas cut-in method of the present embodiment, eNB obtains the subscriber channel status information of UE in the random access procedure of UE, avoid UE connect with busy cell RRC, the processes such as Attach connection, thus the time for obtaining UE channel state information is shortened, finally simplify UE access to new idle district process, shorten UE access to idle district time.
If Figure 11 is shown, UE with carry out random access and interact, generate new idle district and by the signaling process figure of the new idle district of UE access, comprising:
S401:UE sends random access leader sequence (Random Access Preamble) message to eNB.
Wherein, eNB some or all of can choose in 64 Preamble codes for contention access；And the random access leader sequence message bearing is in PRACH (Physical Random Access Channel, Physical Random Access Channel).
After S402:eNB receives random access leader sequence message, the channel state information of UE is obtained according to the PRACH of UE, and new idle district is generated according to the channel state information of the UE got.
S403:eNB sends accidental access response message (Random AccessResponse) to UE, wherein include the identification information of new idle district in the accidental access response message of transmission, such as PCI. of new idle district
The identification information of the S404:UE new cell in accidental access response message based on the received is re-searched for be linked into new idle district.
Currently, the bandwidth of random access channel used in UE random access procedure is 6 RB, it is unable to satisfy the demand for obtaining full bandwidth channel state information, it is therefore preferable that, the bandwidth of random access channel can be revised as taking the RB number of system bandwidth from 6 RB, so that eNB can get the channel state information of full bandwidth when receiving letter UE and obtaining random access channel.
Figure 12 is the structural schematic diagram of the Installation practice one of present invention access multiaerial system, which is deployed in multiaerial system, is weighted using inter-cell united precoding to cell-level pilot tone and control channel；The device, comprising: determining module 51, new cell generation module 52 and the first AM access module 53；Wherein it is determined that module 51, for determining whether terminal device has access to already existing idle district in access system during terminal device accesses cell, wherein idle district is the cell of no user access；New cell generation module 52, when being unable to already existing idle district in access system for terminal device, generates new idle district；First AM access module 53, for sending instruction message to terminal device, so that terminal device accesses new idle district according to instruction message.
In the above-described embodiments, access the device of multiaerial system further include: the second AM access module, for terminal device to be linked into the already existing idle district of system directly or by busy cell, wherein, already existing idle district is that the channel state information of the terminal device accessed according to busy cell each in system generates in system, and busy cell is to have the cell of at least one user access.
Figure 13 is the structural schematic diagram of the Installation practice two of present invention access multiaerial system, which is deployed in multiaerial system, is weighted using inter-cell united precoding to cell-level pilot tone and control channel；The device, comprising: determining module 51, new cell generation module 52 and the first AM access module 53, each functions of modules is identical as above-mentioned apparatus embodiment one, repeats no more.
In the above-described embodiments, new cell generation module 52 includes: information acquisition unit 521, coding determination unit 522 and cell generation unit 523；Information acquisition unit 521, for obtaining the channel state information of terminal device；Determination unit 522 is encoded, for determining inter-cell united precoding according to channel state information；Cell generation unit 523, for determining cell attribute information according to inter-cell united precoding.
In the above-described embodiments, determining module 51, comprising: interactive unit 511, for carrying out cell access interaction with terminal device；First attribute determining unit 512 is idle district or busy cell for determine terminal device access.
In the above-described embodiments, interactive unit 511 are specifically used for connecting foundation interaction with terminal device progress radio resource control RRC；First attribute determining unit 512 is idle district or busy cell specifically for after the RRC connection setup complete message for receiving terminal device transmission, determine terminal device access.
In the above-described embodiments, the first AM access module 53 is specifically used for sending the RRC connection release message of busy cell to terminal device；And interacted for carrying out cell reselection with terminal device, so that terminal device accesses new idle district.
In the above-described embodiments, interactive unit 511 are specifically used for connecting foundation interaction with terminal device progress Attach；First attribute determining unit 512, after completing message in the Attach for receiving terminal device transmission, determine terminal device access is idle district or busy cell.
In the above-described embodiments, the first AM access module 53 sets message specifically for sending RRC connection reconfiguration to terminal device, and RRC connection reconfiguration sets the cell identity information in message comprising new idle district；And the RRC connection reconfiguration for receiving terminal apparatus to be sent sets response message, so that terminal device is linked into new idle district according to cell identity information.
In the above-described embodiments, determining module 51, the random access request sent specifically for receiving terminal apparatus；And for determining whether terminal device has access to idle district.
In the above-described embodiments, the first AM access module 53 is specifically used for sending random access response to terminal device, includes the cell identity information of new idle district in random access response, so that terminal device accesses new idle district according to cell identity information.
Such as the structural schematic diagram of the position Figure 14 access device embodiment one of the present invention, the equipment application is in multiaerial system, it include: that access device 1400 includes communication interface 1401, memory 1403 and processor 1402, wherein, communication interface 1401, processor 1402, memory 1403, be connected with each other by bus 1404；Bus 1404 can be Peripheral Component Interconnect standard (peripheral component interconnect, abbreviation PCI) bus or expanding the industrial standard structure (extended industry standard architecture, abbreviation EISA) bus etc..Bus can be divided into address bus, data/address bus, control bus etc..Only to be indicated with a thick line in Figure 14, it is not intended that an only bus or a type of bus convenient for indicating.
Communication interface 1401 with transmitting terminal for communicating.Memory 1403, for storing program.Specifically, program may include program code, and program code includes computer operation instruction.Memory 1403 may include random access memory (random access memory, abbreviation RAM), it is also possible to further include nonvolatile memory (non-volatile memory), for example, at least a magnetic disk storage.
Processor 1402 executes the program that memory 1403 is stored, the method for realizing preceding method embodiment of the present invention:
During terminal device accesses cell, determine whether the terminal device has access to already existing idle district in access system, wherein the idle district is the cell of no user access；
If the terminal device is unable to already existing idle district in access system, new idle district is generated；
Instruction message is sent to the terminal device, so that the terminal device accesses the new idle district according to the instruction message.
Above-mentioned processor 1402 can be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit (Network Processor, abbreviation NP) etc.；It can also be digital signal processor (DSP), specific integrated circuit (ASIC), field programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.
In the above-described embodiments, the equipment is the enhancing base station eNB in LTE system, the base station BS in WiFi wireless access points AP or worldwide interoperability for microwave accesses WiMAX in wireless fidelity systems.
The function that the device and access device of the access multiaerial system of the embodiment of the present invention are realized is same as mentioned above, no longer repeats one by one.
Those of ordinary skill in the art will appreciate that: realizing all or part of the steps of above method embodiment, this can be accomplished by hardware associated with program instructions, program above-mentioned can be stored in a computer readable storage medium, the program when being executed, executes step including the steps of the foregoing method embodiments；And storage medium above-mentioned includes: the various media that can store program code such as ROM, RAM, magnetic or disk.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or equivalent substitution of some or all of the technical features；And these are modified or replaceed, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (22)
- A method of access multiaerial system, which is characterized in that in the multiaerial system, cell-level pilot tone and control channel are weighted using inter-cell united precoding；The method, comprising:During terminal device accesses cell, determine whether the terminal device has access to already existing idle district in access system, wherein the idle district is the cell of no user access；If the terminal device is unable to already existing idle district in access system, new idle district is generated；Instruction message is sent to the terminal device, so that the terminal device accesses the new idle district according to the instruction message.
- According to the method for claim 1, it is characterized in that, the method also includes: terminal device is linked into the already existing idle district of system directly or by busy cell, wherein, the already existing idle district is the cell of the channel state information generation of the terminal device accessed according to busy cell each in system in system, and the busy cell is to have the cell of at least one user access.
- The method according to claim 1, wherein described generate new idle district, comprising:Obtain the channel state information of the terminal device；Inter-cell united precoding is determined according to the channel state information；Cell attribute information is determined according to the inter-cell united precoding.
- The method according to claim 1, wherein described during terminal device accesses cell, determine whether the terminal device can already existing idle district in access system, comprising:Cell access interaction is carried out with terminal device；Determine the terminal device access is idle district or busy cell.
- According to the method described in claim 4, it is characterized in that, described carry out cell access interaction with terminal device, comprising:Radio resource control RRC, which is carried out, with the terminal device connect foundation interaction；Correspondingly, the determination terminal device access is idle district or busy cell, comprising:After receiving the RRC connection setup complete message that the terminal device is sent, determine the terminal device access is idle district or busy cell.
- According to the method described in claim 5, it is characterized in that, described send instruction message to the terminal device, so that the terminal device accesses the new idle district according to the instruction message, comprising:The RRC connection release message of the busy cell is sent to the terminal device；It carries out cell reselection with the terminal device to interact, so that the terminal device accesses the new idle district.
- According to the method described in claim 4, it is characterized in that, described carry out cell access interaction with terminal device, comprising:Attach, which is carried out, with the terminal device connect foundation interaction；Correspondingly, the determination terminal device access is idle district or busy cell, comprising:After receiving the Attach that the terminal device is sent and completing message, determine the terminal device access is idle district or busy cell.
- The method according to the description of claim 7 is characterized in that described send instruction message to the terminal device, so that the terminal device accesses the new idle district according to the instruction message, comprising:RRC connection reconfiguration is sent to the terminal device and sets message, and the RRC connection reconfiguration sets the cell identity information in message comprising the new idle district；It receives the RRC connection reconfiguration that the terminal device is sent and sets response message, so that the terminal device is linked into the new idle district according to the cell identity information.
- The method according to claim 1, wherein it is described during terminal device accesses cell, determine whether the terminal device has access to already existing idle district in system, comprising:Receive the random access request that the terminal device is sent；Determine whether the terminal device has access to already existing idle district in system.
- According to the method described in claim 9, it is characterized in that, described send instruction message to the terminal device, so that the terminal device accesses the new idle district according to the instruction message, comprising:Random access response is sent to the terminal device, includes the cell identity information of the new idle district in the random access response, so that the terminal device accesses institute according to the cell identity information State new idle district.
- A kind of device accessing multiaerial system, which is characterized in that the device is deployed in multiaerial system, is weighted using inter-cell united precoding to cell-level pilot tone and control channel；Described device, comprising:Determining module, for determining whether the terminal device has access to already existing idle district in access system during terminal device accesses cell, wherein the idle district is the cell of no user access；New cell generation module, when being unable to already existing idle district in access system for the terminal device, generates new idle district；First AM access module, for sending instruction message to the terminal device, so that the terminal device accesses the new idle district according to the instruction message.
- Device according to claim 11, it is characterized in that, the device further include: the second AM access module, for terminal device to be linked into the already existing idle district of system directly or by busy cell, wherein, the already existing idle district is that the channel state information of the terminal device accessed according to busy cell each in system generates in system, and the busy cell is to have the cell of at least one user access.
- Device according to claim 11, which is characterized in that the new cell generation module includes:Information acquisition unit, for obtaining the channel state information of the terminal device；Determination unit is encoded, for determining inter-cell united precoding according to the channel state information；Cell generation unit, for determining cell attribute information according to the inter-cell united precoding.
- Device according to claim 11, which is characterized in that the determining module, comprising:Interactive unit, for carrying out cell access interaction with terminal device；First attribute determining unit is idle district or busy cell for determine the terminal device access.
- Device according to claim 14, which is characterized in that the interactive unit is specifically used for connecting foundation interaction with terminal device progress radio resource control RRC；First attribute determining unit is idle district or busy cell specifically for after receiving the RRC connection setup complete message that the terminal device is sent, determine the terminal device access.
- Device according to claim 15, which is characterized in that first AM access module, tool Body is used to send the RRC connection release message of the busy cell to the terminal device；And interacted for carrying out cell reselection with the terminal device, so that the terminal device accesses the new idle district.
- Device according to claim 14, which is characterized in that the interactive unit is specifically used for connecting foundation interaction with terminal device progress Attach；First attribute determining unit, specifically for after receiving the Attach that the terminal device is sent and completing message, determine the terminal device access is idle district or busy cell.
- Device according to claim 17, which is characterized in that first AM access module sets message specifically for sending RRC connection reconfiguration to the terminal device, and the RRC connection reconfiguration sets the cell identity information in message comprising the new idle district；And response message is set for receiving the RRC connection reconfiguration that the terminal device is sent, so that the terminal device is linked into the new idle district according to the cell identity information.
- Device according to claim 11, which is characterized in that the determining module, the random access request sent specifically for receiving the terminal device；And for determining whether the terminal device has access to idle district.
- Device according to claim 19, it is characterized in that, first AM access module, specifically for sending random access response to the terminal device, it include the cell identity information of the new idle district in the random access response, so that the terminal device accesses the new idle district according to the cell identity information.
- A kind of access device, which is characterized in that the equipment application is in multiaerial system, comprising:Communication interface, memory and processor and communication bus, wherein the communication interface, the memory and the processor are communicated by the communication bus；The memory is used to execute the program of the memory storage for storing program, the processor；When space division multiplexing processing unit operation, the processor runs program, and described program includes:During terminal device accesses cell, determine whether the terminal device has access to already existing idle district in access system, wherein the idle district is the cell of no user access；If the terminal device is unable to already existing idle district in access system, new idle district is generated；Instruction message is sent to the terminal device, so that the terminal device accesses the new idle district according to the instruction message.
- Access device according to claim 21, which is characterized in that the equipment is the enhancing base station eNB in LTE system, the base station BS in WiFi wireless access points AP or worldwide interoperability for microwave accesses WiMAX in wireless fidelity systems.
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| PCT/CN2015/087097 WO2017028060A1 (en) | 2015-08-14 | 2015-08-14 | Method, device and apparatus for accessing a multiple-antenna system |
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| CN1941998A (en) * | 2005-09-29 | 2007-04-04 | 北京三星通信技术研究有限公司 | Access for controlling user terminal equipment in LTE system |
| WO2015085484A1 (en) * | 2013-12-10 | 2015-06-18 | 华为技术有限公司 | Load balancing method and device |
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| US20060276227A1 (en) * | 2005-06-02 | 2006-12-07 | Qualcomm Incorporated | Multi-antenna station with distributed antennas |
| CN101516124A (en) * | 2008-02-20 | 2009-08-26 | 中兴通讯股份有限公司 | Admission control method and device for TD-SCDMA system |
| CN101562858A (en) * | 2008-04-18 | 2009-10-21 | 大唐移动通信设备有限公司 | User access method and device thereof |
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