CN102892198B

CN102892198B - Data transmission method, subscriber equipment, access point and network system

Info

Publication number: CN102892198B
Application number: CN201110204016.0A
Authority: CN
Inventors: 郑娟; 柴丽; 薛丽霞; 马莎
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2011-07-20
Filing date: 2011-07-20
Publication date: 2016-08-03
Anticipated expiration: 2031-07-20
Also published as: WO2013010503A1; CN102892198A

Abstract

The present invention provides a kind of data transmission method, subscriber equipment, access point and network system.The method includes that UE receives the support that the first access point sends and accesses the system information of the second access point；UE is under trigger mechanism or periodically, Stochastic accessing is initiated to the second access point according to described system information, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand；UE, according to the RRC link set up during described Stochastic accessing, carries out data transmission with described second access point.The embodiment of the present invention, the most also will not the subscriber equipment of the first access point service so that subscriber equipment can select suitable community to carry out normal data service communications.

Description

Data transmission method, subscriber equipment, access point and network system

Technical field

The present invention relates to wireless communication technology, particularly relate to a kind of data transmission method, subscriber equipment, access point and network system.

Background technology

nullLower powered access point (AccessPoint is disposed in the coverage of the macro base station (MacroeNodeB) in homogeneous network (homogeneousnetwork)，AP) after，Such as，Micro-base station (microeNodeB)，Femto base station (picoeNodeB)，Home eNodeB (HomeeNodeB)，Femto base station (femto)，Relay station (RelayeNodeB) or far end radio frequency head (RemoteRadioHead，RRH)，In order to improve the availability of frequency spectrum of system，Lower powered access point and macro base station can carry out spectrum reuse wholly or in part，Now include that the network of macro base station and lower powered AP can be referred to as heterogeneous network (heterogeneousnetwork).Now, lower powered access point and macro base station can produce co-channel interference each other, and interference can affect the reliability of the transmission of lower powered access point and/or macro base station.

Such as, when deploying the Home eNodeB of frequency same with macro base station in macro base station coverage, Home eNodeB includes closed mode and mixed model, wherein, closed mode refers to that Home eNodeB only allows contracted user to use, and mixed model refers to both allow contracted user to use, and allows also to non-contracted user and uses, but in scheduling of resource, contracted user has higher priority than non-contracted user.When the Home eNodeB of non-contracted user distance closed mode is very near, although the signal that now this non-contracted user can receive from the Home eNodeB of closed mode is very strong, but as limited authority and this Home eNodeB cannot be accessed.Simultaneously, the signal of the macro base station that this non-contracted user receives can be by the strong jamming of Home eNodeB, thus cause this non-contracted user cannot demodulate some special channels of macro base station, the information of carrying on these special channels cannot be obtained, thus this non-contracted user also cannot carry out normal data communication with macro base station.Above-mentioned special channel includes synchronizing channel (SynchronizationChannel, SCH), Physical Broadcast Channel (PhysicalBroadcastChannel, PBCH) etc..Even if it addition, non-contracted user has access to Home eNodeB when mixed model, but it can only obtain the data, services that priority is low, the data resource that the contracted user of Home eNodeB can enjoy the most also can be affected..

To sum up, prior art is when strong jamming scene, and the subscriber equipment of interfered cell can not select suitable community to carry out normal data service communications, and this subscriber equipment is likely to affect the subscriber equipment of interfered cell simultaneously.

Summary of the invention

The embodiment of the present invention is to provide a kind of data transmission method, subscriber equipment, access point and network system so that subscriber equipment can select suitable community to carry out normal data service communications, does not also interfere with the subscriber equipment of the community of current strong signal simultaneously.

On the one hand the embodiment of the present invention provides a kind of data transmission method, including:

UE receives the support that the first access point sends and accesses the system information of the second access point；

UE is under trigger mechanism or periodically, Stochastic accessing is initiated to the second access point according to described system information, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand；

UE, according to the RRC link set up during described Stochastic accessing, carries out data transmission with described second access point.

The present invention implements on the other hand to provide a kind of data transmission method, including:

First access point obtains the system information supporting to access the second access point；

First access point sends the described system information supporting to access the second access point to UE；First access point sends for indicating the notification message or beep-page message accessing the second access point to UE, make described UE after receiving described notification message or beep-page message, to the second access point initiation Stochastic accessing and carry out data transmission with the second access point according to described system information.

On the other hand the embodiment of the present invention provides a kind of data transmission method, including:

Second access point will support that the system information accessing the second access point is sent to the first access point；

Second access point receives the Stochastic accessing that UE or periodically initiates under trigger mechanism according to the described system information obtained from the first access point, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand；

Second access point carries out data transmission with described UE according to the RRC link set up during described Stochastic accessing.

On the other hand the embodiment of the present invention provides a kind of subscriber equipment, including:

First receives unit, and the support sent for receiving the first access point accesses the system information of the second access point；

Stochastic accessing unit, for under trigger mechanism or periodically, Stochastic accessing is initiated to the second access point according to the described system information that described first receives unit reception, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand；

Transmission unit, for the RRC link set up when described Stochastic accessing according to described Stochastic accessing unit, carries out data transmission with described second access point.

On the other hand the embodiment of the present invention provides a kind of access point, including

Acquiring unit, for obtaining the system information supporting to access the second access point；

First transmitting element, for sending the system information of described support access the second access point that described acquiring unit obtains to UE；

Second transmitting element, for sending for indicating the notification message or beep-page message accessing the second access point to UE, make described UE after receiving described notification message or beep-page message, to the second access point initiation Stochastic accessing and carry out data transmission with the second access point according to the described system information that described first transmitting element sends.

First transmitting element, for supporting that the system information accessing the second access point is sent to the first access point；

Processing unit, for receiving the Stochastic accessing that UE or periodically initiates under trigger mechanism according to the described system information obtained from the first access point, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand；

Transmission unit, carries out data transmission with described UE for the RRC link set up when Stochastic accessing according to described processing unit.

On the other hand the embodiment of the present invention provides a kind of network system, including:

First access point and the second access point；

Described second access point is for supporting that the system information accessing the second access point is sent to described first access point；

Described first access point is for being sent to UE by described system information, make described UE under trigger mechanism or periodically initiate Stochastic accessing according to described system information to described second access point and carry out data transmission with the second access point, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand.

As shown from the above technical solution, the embodiment of the present invention obtains the system information supporting to access the second access point by UE, to the second access point initiating random access procedure to set up RRC link, and then can use this RRC link and the second access point transmission data.Owing to carrying out Stochastic accessing with the second access point, then can realize normal data service communications with the second access point；Simultaneously as be to realize normal data service communications with the second access point rather than the first access point, it is also possible to avoid that the first access point is serviced user and impact.

Accompanying drawing explanation

For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the method flow schematic diagram of first embodiment of the invention；

Fig. 2 is the method flow schematic diagram of second embodiment of the invention；

Fig. 3 is the method flow schematic diagram of third embodiment of the invention；

Fig. 4 is the method flow schematic diagram of fourth embodiment of the invention；

Fig. 5 is the method flow schematic diagram of fifth embodiment of the invention；

Fig. 6 is the user device architecture schematic diagram of sixth embodiment of the invention；

Fig. 7 is the access point structures schematic diagram of seventh embodiment of the invention；

Fig. 8 is the access point structures schematic diagram of eighth embodiment of the invention；

Fig. 9 is the network architecture schematic diagram of ninth embodiment of the invention.

Detailed description of the invention

For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.

When minizone uses frequency spectrum share, in order to protect the transmission of the down channel of interfered cell, some descending sub frame of oneself can be configured to approximate empty subframe (AlmostBlankSubframe, ABS) by interfered cell.Approximate empty subframe refers to the transmission of only public guide frequency in this subframe, or the only transmission of public guide frequency and the transmission of limited control channel and the transmission of some special channels.Here special channel includes SCH, PBCH, SIB-1 and Paging channel etc..Wherein, limited control channel can be Physical Downlink Control Channel (PhysicalDownlinkControlChannel, PDCCH).Now, interfered cell will bear the limited interference from interfered cell, such as the interference of public guide frequency, or public guide frequency and the interference of PDCCH and the interference of special channel.

At Long Term Evolution (LongTermEvolution, or the Long Term Evolution (AdvancedLongTermEvolution of advanced person LTE), LTE-A) in system, some channel occurs when fixing when, such as, for FDD (FrequencyDivisionDuplex, FDD) system, SCH always occurs in 0 work song frame and the 5 work song frames of each radio frames, for time division duplex (TimeDivisionDuplex, TDD) system, SCH always occurs in the 0 of each radio frames, 1,5,6 subframes.PBCH always occurs in 0 work song frame of each radio frames.System information block type 1 (SystemInformationBlock1, SIB-1) always occurs in 5 work song frames of each even frame.Paging channel (PagingChannel) is for FDD system, configure according to systematic parameter, the 9 work song frames in each radio frames can occur, or 4,9 work song frames of each radio frames, or the 0 of each radio frames, 4,5,9 work song frames, for TDD system, configure according to systematic parameter, the 0 work song frame in each radio frames, or the 0 of each radio frames and 5 work song frames, or the 0 of each radio frames, 1,5,6 work song frames can occur.Additionally, the frequency domain position that SCH and PBCH takies also is fixing, i.e. only take up 72 subcarriers at carrier frequency center.

This shows, even if certain descending sub frame is configured to approximate empty subframe by interfered cell, due to above-mentioned special channel, as SCH, PBCH, SIB-1 or pagingchannel occur to also occur on fixing frequency domain position in fixing moment and SCH/PBCH, so the SCH/PBCH causing interference with community and interfered cell is piled up, thus affect the demodulation performance of the SCH/PBCH of interfered cell；Also result in the PDCCH of interfered cell carrying SIB-1/pagingchannel schedule information except bearing the interference from interfered cell public guide frequency, still suffer from the interference of PDCCH of interfered cell carrying SIB-1/pagingchannel schedule information.When interference ratio is more serious, the victim user that interfered cell can be caused to service cannot correctly demodulate above-mentioned special channel thus cause normally accessing interfered cell, and then causes enjoying normal data service service.The scene of the Home eNodeB of frequency same with macro base station is disposed in specifically may refer to above-mentioned macro base station coverage, now, the subscriber equipment (this subscriber equipment is properly termed as victim user) of macro base station service is due to the strong jamming by Home eNodeB, it is difficult to access macro base station, and then can not carry out normal data service service with macro base station.Meanwhile, this victim user can not carry out normal data service service with Home eNodeB owing to authority limits, and at most can carry out the business such as urgent call with Home eNodeB.It addition, even if this victim user can be with access to family base station, it can only enjoy the service of low priority, and can impact the contracted user of Home eNodeB.

In order to solve the problems referred to above, the present invention provides below embodiment.

Fig. 1 is the method flow schematic diagram of first embodiment of the invention, including:

Step 11: subscriber equipment (UserEquipment, UE) receives the support that the first access point sends and accesses the system information of the second access point.

Wherein, this first access point can be interference base station, and the second access point can be interfered base station.

As a example by above-mentioned heterogeneous network, this first access point can be specially Home eNodeB (HomeeNodeB), and this second access point can be specially macro base station (MacroeNodeB).Or, this first access point is macro base station, and the second access point is micro-base station.

Additionally, above-mentioned base station can have different addresses in different systems, such as, above-mentioned base station can be base station (BaseStation, BS), base station (NodeB), evolution base station (eNodeB), base station transmitting-receiving station (BaseTransceiverStation, BTS) or access point (AccessPoint, AP) etc..Above-mentioned subscriber equipment can also have different addresses in different systems, such as, above-mentioned subscriber equipment can be access terminal (accessterminal), access point (accesspoint), personal digital assistant (PersonalDigitalAssistant, PDA) or portable computer (laptop) etc..

Above-mentioned system information can include at least one in following item: the information of the second access point SCH carrying, the information of the second access point PBCH carrying, the information of the second access point SIB-1 carrying, the basic configuration information of the second access point Physical Random Access Channel (PhysicalRandomAccessChannel, PRACH) or the basic configuration information of the second access point up channel.

Above-mentioned system information can be sent to the second access point by RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling by the first access point.

Step 12:UE is under trigger mechanism or periodically, Stochastic accessing is initiated to the second access point according to described system information, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand.

Wherein, this is used for indicating the notification message accessing the second access point can be RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling.

Further, the UE that this notification message only can have same characteristic features to a group is effective, and the most described notification message is for organizing effective message for setting user.Such as, in the wireless network that macro base station and Home eNodeB are all disposed, this setting user's group can be with the relatively low subscriber equipment of right and wrong contracted user's equipment or service priority.In the wireless network that the most micro-base station of macro base station and low power nodes base station is all disposed, this setting user's group can be affected by macro base station interference and interference level exceedes the subscriber equipment of certain thresholding, described thresholding is the Block Error Rate (BlockErrorRate that this setting user organizes the data demodulation of reception, BLER) it is not higher than the maximum interference that threshold value can bear, this threshold value can have different values for different data channels, such as PDCCH, this thresholding can be 1%；For physical down data channel (PhysicalDownlinkSharedChannel, PDSCH), this thresholding can be 10%.This threshold value can also be formulated other values, do not limit at this according to the actual requirements.

This beep-page message can be that UE is known by the paging channel monitoring the first access point, it is also possible to is that UE is known by the paging channel monitoring the second access point.

Above-mentioned periodicity refers to that UE, at the time point set, periodically initiates Stochastic accessing to the second access point.Wherein, time point and the cycle of this setting can be that the first access point notifies to UE.

Step 13:UE, according to wireless heterogeneous networks (RadioResourceControl, the RRC) link set up during described Stochastic accessing, carries out data transmission with described second access point.

Wherein, UE, after using system information to access the second access point, can be linked by the RRC that random access procedure builds up, sends upstream data to the second access point, it is also possible to receive, by this RRC link, the downlink data that the second access point sends.

Specifically, UE accesses community (or referred to as base station) and carries out the general flow of data communication and can be such that

In LTE/LTE-A system, UE first passes through cell selection procedure and selects a suitable community as its Serving cell.Concrete, UE can detect the SCH of community, Physical Cell Identifier (the PhysicalCellID of this community is captured from this SCH, PCI), the length of the Cyclic Prefix (CyclicPrehx, CP) that this cell downlink OFDM (OrthogonalFrequencyDivisionMultiple, OFDM) symbol comprises, symbol and frame timing synchronisation information, and frequency synchronization information.UE reads the PBCH channel of this community afterwards, knows some essential informations of cell configuration by this channel demodulates detection, such as the downlink bandwidth information of this community, System Frame Number information etc..UE can read SIB-1 information (as previously mentioned at fixed time afterwards, 5 work song frames of each even frame), to obtain some public informations of this community, include but not limited to that the measurement that community selection criterion relates to judges information, and the schedule information of other system information (SystemInformation, SI).UE can read other system information in the moment of correspondence scheduling according to the scheduling message of other SI known from SIB-1 channel, include but not limited to that system information block type 2 (SIB-2) is to system information block type 13 (SIB-13) simultaneously.Wherein, by the detection to SIB-2 channel, UE can obtain the parameter configuration of PRACH, if this community is the community that UE can access, such as this community is the community open to all users, this information then can be utilized to base station to initiate Stochastic accessing (RandomAccessChannel, RACH).Once Stochastic accessing success, UE can obtain Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (CellRadioNetworkTemporaryIdentifier, C-RNTI), to ensure that in the data communication process later of UE and base station, base station can uniquely identify this UE；It addition, UE can also obtain timing-advance information, with ensure UE up transmit a signal to reach base station side when, can align with the up timing of base station.So far, from physical layer angle, it is believed that complete the process that RRC link is set up between base station and UE.High level also completes the corelation behaviours such as the Location Registration to this UE and authentication simultaneously.So far, it is achieved that UE select a suitable community as its Serving cell, and can utilize this RRC link with base station between data communication.

On the other hand, if UE does not has business to transmit demand within a period of time, the most do not received downlink data from base station, do not sent upstream data to base station, then the RRC link between base station and UE can discharge yet.After RRC link release, when there is downlink business when, due to the process set up in above-mentioned RRC link, network side is made to have preserved the positional information of UE, thus just so that same tracing area (TrackingArea, TA) all pagings of the base station in are to this UE, to indicate this UE to there is currently downlink business, now UE can initiate Stochastic accessing to its serving BS again, complete the RRC link process between base station, thus ensure the communication of normal downstream data traffic between base station and UE；If when UE has upstream data to send demand when, serving BS also can be initiated Stochastic accessing by UE again, completes above-mentioned RRC link and sets up process, to ensure can carry out between subsequent base stations and UE the communication of normal upstream data service.

Description by above-mentioned random access procedure, when macro base station and Home eNodeB coexist with frequency, and the UE of macro base station service is when being the non-contracted user of Home eNodeB, strong jamming due to Home eNodeB, this UE is owing to cannot correctly demodulate the system information of macro base station so that UE cannot initiate Stochastic accessing to macro base station.Therefore when there is downstream data traffic when, UE due to cannot by macro base station paging to and cause having no idea to receive normal downlink data；Simultaneously when this UE has upstream data service to send demand when, also due to Stochastic accessing cannot be initiated to macro base station and cause the transmission that cannot be carried out upstream data service.Make UE and macro base station can not carry out normal data service.

And in the present embodiment, first access point can will support that the system information accessing the second access point is sent to UE, and this UE can be according to this system information, at trigger mechanism or periodic, Stochastic accessing is initiated so that UE can carry out normal data traffic transmission with the second access point to the second access point.Described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand.

The present embodiment obtains the system information supporting to access the second access point by UE, to the second access point initiating random access procedure to set up RRC link, and then can use this RRC link and the second access point transmission data.Owing to carrying out Stochastic accessing with the second access point, then can realize normal data service communications with the second access point；Simultaneously as be to carry out normal data service communications between the second access point rather than the first access point, therefore can avoid the contracted user of the first access point is impacted.

Fig. 2 is the method flow schematic diagram of second embodiment of the invention, including:

Step 21: the first access point will support that the system information accessing the second access point is sent to UE.

Wherein, described system information can by S1 interface or X2 interface or be eated dishes without rice or wine to notify to the first access point by the second access point, or described system information first by S1 interface or X2 interface or is eated dishes without rice or wine to notify to other network equipments (such as base station controller, radio network controller, mobile management entity, access gateway or multiple cell/multicast cooperation entity) by the second access point, then or is eated dishes without rice or wine to notify described system information to the first access point by S1 interface or X2 interface by other network equipments described.

As above described in an embodiment, this system information at least includes at least one in following item: the information of the second access point SCH carrying, the information of the second access point PBCH carrying, the information of the second access point SIB-1 carrying, the basic configuration information of the second access point PRACH or the basic configuration information of the second access point up channel.

Said system information can be sent to UE by the first access point in the following way.

The information of (1) second access point SCH carrying.

The information of SCH carrying includes PCI, descending CP length, timing synchronisation information and frequency synchronization information.

For PCI, the PCI of the second access point can be directly notified UE by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling by the first access point, so that this UE can directly obtain the PCI of the second access point.Concrete, first access point can indicate the PCI of the second access point by the redundant bit in Physical Broadcast Channel PBCH, such as 9bit can be utilized to indicate 512 states to use binary form, such that it is able to one of them in 504 PCI of instruction, this indicating means is particularly well-suited to macro base station and the Home eNodeB scene that channel is disposed altogether；First access point can also pass through system information block (SystemInformationBlock, SIB) signal or by the PCI signaling the second access point of subscriber equipment specific (UE-Specific), here UE-Specific signaling can be effective to one group of subscriber equipment with same characteristic features, such as in the wireless network that macro base station and Home eNodeB are all disposed, this group has the subscriber equipment of same characteristic features can be with right and wrong authorized user device, and in the wireless network that the most micro-base station of macro base station and low power nodes base station is all disposed, this group subscriber equipment can be affected by macro base station interference and interference level exceedes the subscriber equipment of certain thresholding.In addition, relativeness between first access point PCI and the second access point PCI can also be notified to UE by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling by the first access point, so that this UE can utilize the first access point PCI and this relativeness of acquisition, it is calculated the PCI of the second access point.

For descending CP length, the CP length of the second access point can also be notified to UE by the first access point by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling.Concrete, the CP length of the second access point can be indicated by the redundant bit in PBCH, such as can utilize two states of 1bit instruction CP length to use binary form, it is i.e. extension CP or normal CP, 1bit can also be utilized to indicate the CP of the CP of the second access point and the first access point the most identical, and such as 0 represents identical, and 1 represents difference, or 0 represents difference, and 1 represents identical；In addition it is also possible to by SIB signaling or signal to UE by UE-Specific, it is described herein as identical with PCI information instruction, does not repeats.Additionally, the CP length that UE can also give tacit consent to the first access point and the second access point is identical.

nullAcquisition for timing synchronisation information，Here timing information can include symbol timing information，Frame timing information，The timing information that subscriber equipment can give tacit consent to timing information and the second access point obtained from the first access point SCH is identical，Now the data transmission time between the first access point and the second access point can coordinate，So that the time that the first access point transmission signal and the second access point transmit a signal to reach UE end is substantially aligned，Or the fast Fourier transform (FastFourierTransform that subscriber equipment timing information based on the first access point obtains，Or anti-fast Fourier transform (InverseFastFourierTransform FFT)，IFFT) timing position falls at the OFDM (OrthogonalFrequencyDivisionMultiplexing of the second access point，OFDM) in the range of the CP of symbol；The timing information of the second access point can also be obtained by the signaling instruction of the timing information obtained from the first access point SCH and the first access point, the content of this signaling instruction can be the difference between the first access point and the second access point between difference and/or OFDM symbol index between difference and/or wireless sub-frame call number between radio frames call number, and this signaling can pass through RRC broadcast signaling, the proprietary signaling of RRC, physical layer signaling notify.Further, after subscriber equipment obtains the timing information of the second access point, by the detection of the known channel that the second access point is sent and/or known signal, the timing information of the second access point further can also be adjusted, the most here known signal can be cell specific reference signal (Cell-specificReferenceSignal, CRS).

For the acquisition of frequency synchronization information, frequency information here can include center carrier frequence information and frequency offset information.It is identical with the frequency synchronization information of the second access point that subscriber equipment can give tacit consent to the frequency synchronization information obtained from the first access point SCH；The frequency synchronization information obtaining the second access point can also be indicated by the signaling of the first access point.Further, after subscriber equipment obtains the frequency synchronization information of the second access point, it is also possible to by the detection of the known channel that the second access point is sent and/or known signal, the frequency synchronization information of the second access point is further adjusted.

The information of (2) second access point PBCH carryings.

The information of PBCH carrying can include system bandwidth information, system antenna port number, system wireless frame number, physical hybrid automatic repeat request indicator channel (PhysicalHybrid-ARQIndicatorChannel, PHICH) resource allocation information.First access point can pass through RRC broadcast signaling, full detail or partial information that second access point PBCH is carried by the proprietary signaling of RRC or physical layer signaling directly notify subscriber equipment so that subscriber equipment can directly obtain the information of the second access point PBCH carrying.Here, when the first access point only notifies the partial information of the second access point PBCH carrying to subscriber equipment, for carrying information not over the second access point PBCH of the first access point notice, it is identical with the corresponding informance of the first access point that subscriber equipment can give tacit consent to these information.Further, can also the write from memory information of the first access point PBCH channel bearing of UE is the most identical with the information of the second access point PBCH channel bearing, now need not the information of first access point additional notifications UE the second access point PBCH carrying.

Additionally, relativeness between information and the information of the second access point PBCH carrying that first access point PBCH can also be carried by the first access point by signaling notifies to subscriber equipment, so that subscriber equipment can carry information according to first access point PBCH carrying information and this relativeness, the PBCH being calculated the second access point.

The information of (3) second access point SIB-1 carryings.

The information of the second access point SIB-1 carrying, can include most public information of the second access point, as community selects decision parameter, the schedule information of other system information (SystemInformation, SI).Describe with (2), full detail or partial information that second access point SIB-1 can be carried by the first access point by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling notify to subscriber equipment, so that subscriber equipment can be according to the described information signaling and knowing that the second access point SIB-1 carries.When the first access point only notifies the partial information of the second access point SIB-1 carrying to subscriber equipment, for carrying information not over the second access point SIB-1 of the first access point notice, it is identical with the SIB-1 corresponding informance of the first access point that subscriber equipment can give tacit consent to these information；Or the relativeness between information and the information of the second access point SIB-1 carrying that the first access point SIB-1 can also be carried by the first access point by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling notifies to subscriber equipment, so that UE can obtain the information of the second access point SIB-1 carrying according to the information of the first access point SIB-1 carrying and described relativeness.Additionally, the information that subscriber equipment can also give tacit consent to the first access point SIB-1 carrying is identical with the information that the second access point SIB-1 carries, the most also avoid the need for the information of the first access point additional notifications this subscriber equipment the second access point SIB-1 carrying.

Further, first access point can be by adding extended field at the information field of existing first access point SIB-1 carrying, it is used to refer to full detail or the partial information of the second access point SIB-1 carrying, or is used to refer to the relativeness between information and the information of the second access point SIB-1 carrying of the first access point SIB-1 carrying.

The basic configuration information of (4) second access point PRACH.

The basic configuration information of the second access point PRACH can include but not limited to following parameter: root sequence index (rootSequenceIndex), PRACH configuration index (prach-ConfigIndex), PRACH frequency shift (FS) index (prach-FreqOffset), zero correlation band configure (zeroCorrelationZoneConfig).Concrete, all or part of basic configuration parameter of the second access point PRACH can be notified to subscriber equipment by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling by the first access point, when the first access point only notifies the part basic configuration parameter of the second access point PRACH to subscriber equipment, for the part basic configuration parameter of the second access point PRACH not over the first access point notice, it is identical with the basic configuration parameter of the first access point that subscriber equipment can give tacit consent to these basic configuration parameters.Same, relativeness between basic configuration parameter and the basic parameter of the second access point PRACH of the first access point PRACH can also be notified to subscriber equipment, so that subscriber equipment can obtain the basic configuration parameter of the second access point PRACH according to the basic configuration parameter of the first access point PRACH and this relativeness by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling by the first access point.

Further, first access point can be by adding extended info field in the system message of existing first access point carrying PRACH basic configuration parameter, it is used to refer to whole basic configuration parameters or the part basic configuration parameter of the second access point PRACH, or is used to refer to the relativeness between the first access point PRACH basic configuration parameter and the second access point PRACH basic configuration parameter.

5) basic configuration information of the second access point up channel.

The basic configuration information of the second access point up channel can include but not limited to following parameter: uplink carrier frequency, upstream bandwidth, uplink cycle prefix length, the common configuration parameter of Physical Uplink Shared Channel (PhysicalUplinkSharedChannel, PUSCH).Concrete advice method is same as above, is not repeating.

In addition, optionally, all or part of information that other all or part of system information block SIBs of second access point carry can also be notified to subscriber equipment, so that subscriber equipment can obtain all or part of information of other all or part of SIBs of the second access point carrying by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling by the first access point.Or, relativeness between information and the information of the first access point SIBs carrying that second access point SIBs can also be carried by the first access point by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling notifies to subscriber equipment, so that subscriber equipment can obtain the information of the second access point SIBs carrying according to the information of the first access point SIBs carrying and described relativeness.

In addition, first access point can also access the channel position information of the system information carrying of the second access point by the proprietary signaling of RRC broadcast signaling or RRC or the above-mentioned support of physical layer signaling notifying user equipment, so that subscriber equipment can obtain the described system information supporting to access the second access point according to this positional information.

Step 22: the first access point sends the first notification message to UE, described first notification message is used for indicating UE to access the second access point.

Wherein, first access point can send this first notification message by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling to subscriber equipment, so that subscriber equipment can access the system information of the second access point according to the above-mentioned support obtained from the first access point, initiate Stochastic accessing to the second access point.

Further, this first notification message can be the most effective to one group of subscriber equipment with same characteristic features, such as in the wireless network that macro base station and Home eNodeB are all disposed, this group has the subscriber equipment of same characteristic features can be with the relatively low subscriber equipment of right and wrong authorized user device or service priority, and in the wireless network that the most micro-base station of macro base station and low power nodes base station is all disposed, this group subscriber equipment can be affected by macro base station interference and interference level exceedes the subscriber equipment of certain thresholding.Described thresholding is the maximum interference that can bear of BLER not higher than threshold value that this setting user organizes the data demodulation of reception, and this threshold value can have different values for different data channels, such as, for PDCCH, this thresholding can be 1%；For PDSCH, this thresholding can be 10%.This threshold value can also be formulated other values, do not limit at this according to the actual requirements.

After step 23:UE receives this first notification message, access the system information of the second access point according to the above-mentioned support received, initiate Stochastic accessing to the second access point.Afterwards, UE can carry out normal data service with the second access point.

Subscriber equipment utilizes first notification message signaled of the first access point, directly initiates Stochastic accessing to the second access point, completes the resident process at the second access point.

Wherein, the response message related in this random access procedure can be carried on the locked resource of the second access point to ensure that this subscriber equipment can have correctly received the response message of Stochastic accessing by the second access point.Here locked resource refers to can ensure that the BLER that the data that this subscriber equipment receives demodulate not higher than sets threshold value.This threshold value can have different values for different data channels, such as, for PDCCH channel, this thresholding can be 1%；For PDSCH channel, this thresholding can be 10%.Additionally, this threshold value can also be formulated other values, do not limit at this according to the actual requirements.Further, this resource can be time resource (such as one subframe), frequency resource (such as Physical Resource Block PRB, PhysicalResourceBlock), can also be space resources (such as one code book codebook).On the other hand; the response message related in this random access procedure can also be carried on the non-locked resource of the second access point by the second access point; if this subscriber equipment correctly solution cannot be transferred to described response message; so this subscriber equipment may proceed to initiate Stochastic accessing to the second access point, until this subscriber equipment can be successfully established RRC link with the second access point；Or this subscriber equipment can also postpone a period of time, then initiate Stochastic accessing to the second access point, and until this subscriber equipment can be successfully established RRC link with the second access point.

It can be seen that, in this step, for subscriber equipment, the judgement of community criterion can be carried out, and the support signaling and being known by the first access point directly utilizing the first access point accesses the system information of the second access point, directly initiate Stochastic accessing to the second access point, complete resident process.

Above-mentioned is to initiate as a example by Stochastic accessing to the second access point according to the notification message in trigger mechanism by UE, optionally, subscriber equipment can also utilize the first access point to access the system information of the second access point in step 21 by the support that the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling notify, periodically initiates Stochastic accessing to the second access point.Wherein, in the PRACH basic configuration information of the second access point that the time location of period assignment from RACH to the second access point and initiation RACH place that subscriber equipment initiates may be embodied in the first access point notice, it is also possible to introduce new RRC broadcast or RRC is proprietary or physical layer signaling is for notifying that UE initiates the period assignment information of RACH to the second access point and initiates the time location information at RACH place.Now, subscriber equipment, after the system information of obtaining step 21, directly periodically can initiate Stochastic accessing to the second access point.

Further, alternatively, the present embodiment can also include:

Step 24: the second access point sends the second notification message to UE, this second notification message is for indicating UE to receive the system information of the second access point from the first access point.

Wherein, when UE and the second access point are set up after RRC links, generally UE can receive the system information of the second access point from the second access point, but, owing to the signal of the second access point is by the strong jamming of the first access point, it is difficult to send efficient system information to UE, therefore, in order to improve the effectiveness of system information, the second access point can also indicate that UE continues to obtain the system information of the second access point from the first access point.

Specifically, after subscriber equipment completes the RRC link with the second access point, by the proprietary signaling of RRC broadcast signaling or RRC or physical layer signaling, the second access point can notify that this subscriber equipment still receives the system information of the second access point from the first access point.Described system information may include that the information of the second access point SCH carrying, the information of the second access point PBCH carrying, information, the basic configuration information of the second access point PRACH or the basic configuration information of the second access point up channel of the second access point SIB-1 carrying.Concrete information content and the mode that signals can be identical with the description in step 21, do not repeat them here.Similarly, the subscriber equipment that described RRC broadcast or the proprietary signaling of RRC or physical layer signaling can have same characteristic features to a group is effective, described in there is the subscriber equipment of same characteristic features as it has been described above, do not repeat at this.Further, when the subscriber equipment that described signaling can have same characteristic features to a group is effective, in order to identify described subscriber equipment, random access leader sequence (Preamble) can also be reserved in advance between first access point and the second access point, concrete, first access point or the second access point can reserve Stochastic accessing preamble, and described preamble information is eated dishes without rice or wine notice to the second access point or the first access point by X2/S1/.Additionally, described preamble information is also notified to subscriber equipment by the first access point, so that described subscriber equipment can utilize described preamble information to initiate Stochastic accessing to the second access point.Simultaneously, second access point can also know the feature of described subscriber equipment according to described subscriber equipment to the preamble information that the second access point initiation Stochastic accessing utilizes, further, the Stochastic accessing that the second access point can also be paid the utmost attention to initiate described subscriber equipment responds.

Optionally, the second access point can monitor the paging channel of the first access point with notifying user equipment, so that subscriber equipment can obtain the first access point and/or the second access point system information more new information.Further, the system information update notification of the paging channel carrying of the first access point can be used to indicate respectively whether the system information of the first access point changes, whether the support of the first access point notice accesses the necessary system information of the second access point and change.Additionally, the subscriber equipment completing to reside in the second access point can also obtain downlink business paging information by the paging channel monitoring the first access point, downlink business here can be introduced into calling (incomingcall).

Further, alternatively, the present embodiment can also include:

If in a certain time interval, there is no the communication of data service between the second access point and UE, then the RRC link between the second access point and UE will release.

Afterwards, when the second access point have downstream data traffic be sent to UE or UE have upstream data service to be sent to the second access point time, UE according to support access the second access point system information, again carry out Stochastic accessing to the second access point.

Communication for downstream data traffic, subscriber equipment can know whether to need to carry out communicating of downstream data traffic with the second access point by the paging channel monitoring the first access point or the second access point, the need to, second access point is initiated Stochastic accessing by system information that subscriber equipment then utilizes the support received from the first access point to access the second access point again, complete RRC link setup, RRC link be successfully established after, subscriber equipment just can and the second access point between carry out normal data communication.Further, when subscriber equipment by the paging channel monitoring the first access point know needs carry out with the second access point downstream data traffic communicate time, first access point can introduce extraneous information field in existing beep-page message (PagingMessage), it is used to refer to subscriber equipment and initiates RACH to the second access point, thus and between the second access point, carry out normal downstream data traffic.For uplink service, when there is upstream data transmission demand in subscriber equipment, second access point is initiated Stochastic accessing by system information that the support received from the first access point also can be utilized to access the second access point again, after completing RRC link setup, subscriber equipment just can carry out normal upstream data communication by sending to the second access point between dispatch request (SchedulingRequest, SR) and the second access point.

The system information supporting the second access point is sent to UE by the first access point by the present embodiment, UE is made to initiate Stochastic accessing according to this system information to the second access point, realizing UE can select suitable community to carry out normal data service, and avoids the user of the first access point causes data, services affect.In the present embodiment, UE does not go for the scene of the Home eNodeB that the first access point is closed mode to the first access point initiation Stochastic accessing.Fig. 3 is the method flow schematic diagram of third embodiment of the invention, including:

Step 31:UE obtains the system information supporting to access the first access point, and initiates Stochastic accessing to the first access point.

Wherein, when the Home eNodeB that the first access point is mixed model, even if UE is non-contracted user, it is also possible to access the first access point, simply can obtain the service of low priority.Now, UE can demodulate the system information of the first access point, and accesses the first access point, sets up RRC with the first access point and carries out data service.

Step 32: the first access point will support that the system information accessing the second access point is sent to UE.

Step 33: the first access point sends the first notification message to UE, described first notification message is used for indicating UE to access the second access point.

After step 34:UE receives this first notification message, access the system information of the second access point according to above-mentioned support, initiate Stochastic accessing to the second access point.Afterwards, UE can carry out normal data service with the second access point.

Wherein, above-mentioned step 33-34 is to trigger UE as a example by the second access point initiates Stochastic accessing by the first notification message, can also be that UE initiates Stochastic accessing when there being data transfer demands to the second access point, or UE periodically initiates Stochastic accessing i.e. to the second access point, subscriber equipment can also be after completing above-mentioned steps 31 and 32, when there is data communication needs, then initiate Stochastic accessing to the second access point.Such as, when subscriber equipment detects the presence of the paging ID of this subscriber equipment from the paging channel of the first access point, subscriber equipment can initiate Stochastic accessing to the second access point again；Or when subscriber equipment exists uplink service transmission demand, subscriber equipment can initiate Stochastic accessing to the second access point again.Further, subscriber equipment here can be the subscriber equipment at the first access point with low service priority, the non-contracted user of the Home eNodeB service of such as Hybrid pattern.

Concrete, when subscriber equipment detects the presence of the paging ID of this subscriber equipment from the paging channel of the first access point, subscriber equipment can access the system information of the second access point according to the support that step 32 obtains and initiate Stochastic accessing to the second access point, and the second access point completes and the RRC link process of this subscriber equipment.Afterwards, the second access point can carry out normal downlink data communication with this subscriber equipment；When subscriber equipment exist uplink service send demand time, subscriber equipment can access the system information of the second access point according to the support that step 32 obtains and initiate Stochastic accessing to the second access point, and the second access point completes and the RRC link process of this subscriber equipment.This subscriber equipment can send to the second access point and carry out normal upstream data communication between dispatch request SR, and the second access point afterwards.

Further, alternatively, the present embodiment can also include:

Step 35: the second access point sends the second notification message to UE, this second notification message is for indicating UE to receive the system information of the second access point from the first access point.

Further, alternatively, the present embodiment can also include:

RRC link release between UE and the second access point.Afterwards, when the downstream data traffic or UE having the second access point has upstream data service, UE, according to supporting the system information of the second access point, carries out Stochastic accessing to the second access point again.Handling process after concrete RRC link release may refer to an embodiment.

The content of above-mentioned step 32-35 can be referring specifically to step 21-24 in a upper embodiment.

The system information supporting the second access point is sent to UE by the first access point by the present embodiment, UE is made to initiate Stochastic accessing according to this system information to the second access point, realizing UE can select suitable community to carry out normal data service, and avoids causing the user of the first access point the impact of data, services.In the present embodiment, UE goes for the scene of the Home eNodeB that the first access point is mixed model to the first access point initiation Stochastic accessing, it is also possible to being applicable to the first access point is macro base station, and the second access point is the scene of micro-base station.

Fig. 4 is the method flow schematic diagram of fourth embodiment of the invention, including:

Step 41: the first access point obtains the system information supporting to access the second access point；

It may be that the first access point receives the second access point (or other network equipments) by X2 interface, S1 interface or the system information of described support access the second access point sent of eating dishes without rice or wine.

Above-mentioned system information can include at least one in following item: the information of the second access point SCH carrying, the information of the second access point PBCH carrying, information, the basic configuration information of the second access point PRACH or the basic configuration information of the second access point up channel of the second access point SIB-1 carrying.

Step 42: the first access point sends the described system information supporting to access the second access point to UE；

In RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling, it is sent to UE it may be that system information carried.

Step 43: the first access point sends for indicating the notification message or beep-page message accessing the second access point to UE, make described UE after receiving described notification message or beep-page message, to the second access point initiation Stochastic accessing and carry out data transmission with the second access point according to described system information.

Above-mentioned notification message can carry in RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling.

Above-mentioned beep-page message can obtain by monitoring paging channel.

The present embodiment will support that the system information accessing the second access point is sent to UE by the first access point, and send a notification message or beep-page message to UE, so that UE is under the triggering of notification message or beep-page message, according to this system message to the second access point initiating random access procedure to set up RRC link, and then use this RRC link and the second access point transmission data.Owing to carrying out Stochastic accessing with the second access point, then can realize normal data service communications with the second access point；Simultaneously as be to realize normal data service communications with the second access point rather than the first access point, it is also possible to avoid that the first access point is serviced user and impact.

Fig. 5 is the method flow schematic diagram of fifth embodiment of the invention, including:

Step 51: the second access point will support that the system information accessing the second access point is sent to the first access point；

Can be, second access point is by X2 interface, S1 interface or eats dishes without rice or wine the described system information supporting to access the second access point is sent to the first access point, or the second access point is by X2 interface, S1 interface or eats dishes without rice or wine to be sent to the described system information supporting to access the second access point other network equipments, then or is eated dishes without rice or wine the described system information supporting to access the second access point is sent to the first access point by X2 interface, S1 interface by other network equipments described

Step 52: the second access point receives the Stochastic accessing that UE or periodically initiates under trigger mechanism according to the described system information obtained from the first access point, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand；

Further; can also include: the second access point is after UE initiates Stochastic accessing; being carried on locked resource by the response message of Stochastic accessing and be sent to UE, described locked resource refers to ensure the resource that the BLER that the data that described UE receives demodulate is less than or equal to set threshold value.

Step 53: the second access point carries out data transmission with described UE according to the RRC link set up during described Stochastic accessing.

Further, it is also possible to including: the described RRC link that the second access point is set up by Stochastic accessing sends for indicating the system information accessing the second access point from the first access point acquisition support to UE.

The present embodiment will support that the system information accessing the second access point is sent to the first access point by the second access point, and by the first access point, this system information is sent to UE, so that UE is at trigger mechanism or periodic, according to this system information to the second access point initiating random access procedure to set up RRC link, and then use this RRC link and the second access point transmission data.Owing to carrying out Stochastic accessing with the second access point, then can realize normal data service communications with the second access point；Simultaneously as be to realize normal data service communications with the second access point rather than the first access point, it is also possible to avoid that the first access point is serviced user and impact.

Fig. 6 is the user device architecture schematic diagram of sixth embodiment of the invention, including the first reception unit 61, Stochastic accessing unit 62 and transmission unit 63；First receives unit 61 accesses the system information of the second access point for the support receiving the first access point transmission；Stochastic accessing unit 62 is used under trigger mechanism or periodic, Stochastic accessing is initiated to the second access point according to the described system information that described first receives unit reception, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand；Transmission unit 63, for the RRC link set up when described Stochastic accessing according to described Stochastic accessing unit, carries out data transmission with described second access point.

Further, it is also possible to including: second receives unit, for receiving the message receiving described system information for instruction from the first access point that described second access point sends；Now, described first receives unit receives described for indicating after the first access point receives the message of described system information at described second reception unit, continues from the described first access point described system information of reception.

Further; can also include: the 3rd receives unit; after initiating Stochastic accessing at described Stochastic accessing unit; receive the response message of the described Stochastic accessing being carried on locked resource that the second access point sends; described locked resource refers to ensure the resource that the BLER that the data that described UE receives demodulate is less than or equal to set threshold value, and described locked resource includes: time resource, frequency resource or space resources.

It may be that described first receives the described system information that unit receives and includes at least one in following item: the information of the second access point SCH carrying, the information of the second access point PBCH carrying, information, the basic configuration information of the second access point PRACH or the basic configuration information of the second access point up channel of the second access point SIB-1 carrying.

It may be that the described first described system information receiving unit reception is carried in RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling；Or, the described notification message in the trigger mechanism that described Stochastic accessing unit is corresponding carries in RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling.

The present embodiment obtains the system information supporting to access the second access point by UE, to the second access point initiating random access procedure to set up RRC link, and then can use this RRC link and the second access point transmission data.Owing to carrying out Stochastic accessing with the second access point, then can realize normal data service communications with the second access point；Simultaneously as be to realize normal data service communications with the second access point rather than the first access point, it is also possible to avoid that the first access point is serviced user and impact.

Fig. 7 is the access point structures schematic diagram of seventh embodiment of the invention, and this access point can be that in the heterogeneous network of interfering nodes, such as Home eNodeB and macro base station composition, this access point can be Home eNodeB.The most such as, in the heterogeneous network that macro base station and micro-base station are constituted, this access point is macro base station.This access point 70 includes acquiring unit the 71, first transmitting element 72 and the second transmitting element 73；Acquiring unit 71 is for obtaining the system information supporting to access the second access point；First transmitting element 72 for sending the system information of described support access the second access point that described acquiring unit obtains to UE；Second transmitting element 73 is for sending for indicating the notification message or beep-page message accessing the second access point to UE, make described UE after receiving described notification message or beep-page message, to the second access point initiation Stochastic accessing and carry out data transmission with the second access point according to the described system information that described first transmitting element sends.

Further, described acquiring unit 71 specifically for: receive the second access point by X2 interface, S1 interface or eat dishes without rice or wine send described support access the second access point system information.

Further, the described system information that described first transmitting element 72 sends is carried in RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling；Or, the described notification message that described second transmitting element 73 sends carries in RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling.

Fig. 8 is the access point structures schematic diagram of eighth embodiment of the invention, and this access point can be that in the heterogeneous network of disturbed node, such as Home eNodeB and macro base station composition, this access point can be macro base station.The most such as, in the heterogeneous network that macro base station and micro-base station are constituted, this access point is micro-base station.This access point 80 includes the first transmitting element 81, processing unit 82 and transmission unit 83；First transmitting element 81 is for supporting that the system information accessing the second access point is sent to the first access point；Processing unit 82 is for receiving the Stochastic accessing that UE or periodically initiates under trigger mechanism according to the described system information obtained from the first access point, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand；Transmission unit 83 carries out data transmission with described UE for the RRC link set up when Stochastic accessing according to described processing unit.

Further, it is also possible to including: the second transmitting element, the described RRC link for being set up by described processing unit obtains, to UE transmission, the system information supporting to access the second access point for instruction from the first access point.

Further; can also include: the 3rd transmitting element; after receiving, at described processing unit, the Stochastic accessing that UE initiates; being carried on locked resource by the response message of Stochastic accessing and be sent to UE, described locked resource refers to ensure the resource that the BLER that the data that described UE receives demodulate is less than or equal to set threshold value.

It is possible to further be, described first transmitting element specifically for by X2 interface, S1 interface or eat dishes without rice or wine will support access the second access point system information be sent to the first access point.

Fig. 9 is the network architecture schematic diagram of ninth embodiment of the invention, and this network system can be heterogeneous network, including the first access point 91 and the second access point 92；Described second access point 92 is for supporting that the system information accessing the second access point is sent to described first access point；Described first access point 91 is for being sent to UE by described system information, make described UE under trigger mechanism or periodically initiate Stochastic accessing according to described system information to described second access point and carry out data transmission with the second access point, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand.

The first above-mentioned access point can be interfering nodes, and the second access point is disturbed node.Such as, in the heterogeneous network of Home eNodeB and macro base station composition, this first access point is Home eNodeB, and the second access point is macro base station.The most such as, in the heterogeneous network that macro base station and micro-base station are constituted, this first access point is macro base station, and the second access point is micro-base station.

Specifically, the first above-mentioned access point can be as shown in Figure 7.Second access point can be as shown in Figure 8.

The present embodiment will support that the system information accessing the second access point is sent to the first access point by the second access point, this system information is sent to UE by the first access point, UE is under trigger mechanism or periodically, according to this system information to the second access point initiating random access procedure to set up RRC link, and then use this RRC link and the second access point transmission data.Owing to carrying out Stochastic accessing with the second access point, then can realize normal data service communications with the second access point；Simultaneously as be to realize normal data service communications with the second access point rather than the first access point, it is also possible to avoid that the first access point is serviced user and impact.

It is understood that the correlated characteristic in each embodiment of said method and device can mutually reference.It addition, " first ", " second " in above-described embodiment etc. is for distinguishing each embodiment, and do not represent the quality of each embodiment.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can be completed by the hardware that programmed instruction is relevant, aforesaid program can be stored in computer read/write memory medium, this program upon execution, performs to include the step of said method embodiment；And aforesaid storage medium includes: the various media that can store program code such as ROM, RAM, magnetic disc or CDs.

Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1. a data transmission method, it is characterised in that including:

User equipment (UE) receives the support that the first access point sends and accesses the system information of the second access point, and described system information includes at least one in following item: the information of the second access point synchronous channel SCH carrying, the information of the second access point Physical Broadcast Channel PBCH carrying, information, the basic configuration information of the second access point Physical Random Access Channel PRACH or the basic configuration information of the second access point up channel of the second access point system information block type SIB-1 carrying；

UE, according to the radio resource control RRC link set up during described Stochastic accessing, carries out data transmission with described second access point.

Method the most according to claim 1, it is characterised in that described after the second access point initiates Stochastic accessing, described method also includes:

UE receives the message receiving described system information for instruction from the first access point that described second access point sends；

Described UE continues to receive described system information from described first access point.

UE receives the response message of the described Stochastic accessing being carried on locked resource that the second access point sends; described locked resource refers to ensure the resource that the block error rate BLER that the data that described UE receives demodulate is less than or equal to set threshold value, and described locked resource includes: time resource, frequency resource or space resources.

4. according to the method described in any one of claim 1-3, it is characterised in that

Described system information is carried in RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling；

Or,

Described notification message carries in RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling.

5. a data transmission method, it is characterised in that including:

First access point obtains the system information supporting to access the second access point, and described system information includes at least one in following item: the information of the second access point synchronous channel SCH carrying, the information of the second access point Physical Broadcast Channel PBCH carrying, information, the basic configuration information of the second access point Physical Random Access Channel PRACH or the basic configuration information of the second access point up channel of the second access point system information block type SIB-1 carrying；

First access point sends the described system information supporting to access the second access point to user equipment (UE)；First access point sends for indicating the notification message or beep-page message accessing the second access point to UE, make described UE after receiving described notification message or beep-page message, initiate Stochastic accessing according to described system information to the second access point, and carry out data transmission with described second access point according to the radio resource control RRC link set up during described Stochastic accessing.

Method the most according to claim 5, it is characterised in that described first access point obtains the system information supporting to access the second access point, including:

First access point receives the second access point by X2 interface, S1 interface or the system information of described support access the second access point sent of eating dishes without rice or wine.

7. according to the method described in claim 5 or 6, it is characterised in that

Described system information is carried at radio resource control RRC broadcast signaling, the proprietary signaling of RRC or thing

In reason layer signaling；Or,

8. a data transmission method, it is characterised in that including:

Second access point will support that the system information accessing the second access point is sent to the first access point, and described system information includes at least one in following item: the information of the second access point synchronous channel SCH carrying, the information of the second access point Physical Broadcast Channel PBCH carrying, information, the basic configuration information of the second access point Physical Random Access Channel PRACH or the basic configuration information of the second access point up channel of the second access point system information block type SIB-1 carrying；

Second access point receives the Stochastic accessing that user equipment (UE) or is periodically initiated under trigger mechanism according to the described system information obtained from the first access point, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand；

Second access point carries out data transmission with described UE according to the radio resource control RRC link set up during described Stochastic accessing.

Method the most according to claim 8, it is characterised in that also include:

Second access point supports the system information of access the second access point by described RRC link to UE transmission for instruction from the first access point acquisition.

Method the most according to claim 8 or claim 9, it is characterised in that also include:

The response message of Stochastic accessing, after UE initiates Stochastic accessing, is carried on locked resource and is sent to UE by the second access point, and described locked resource refers to ensure the resource that the block error rate BLER that the data that described UE receives demodulate is less than or equal to set threshold value.

11. methods according to claim 8 or claim 9, it is characterised in that described second access point will support that the system information accessing the second access point is sent to the first access point, including:

Second access point is by X2 interface, S1 interface or eats dishes without rice or wine to support that the system information accessing the second access point is sent to the first access point.

12. 1 kinds of user equipment (UE)s, it is characterised in that including:

First receives unit, the support sent for receiving the first access point accesses the system information of the second access point, and described system information includes at least one in following item: the information of the second access point synchronous channel SCH carrying, the information of the second access point Physical Broadcast Channel PBCH carrying, information, the basic configuration information of the second access point Physical Random Access Channel PRACH or the basic configuration information of the second access point up channel of the second access point system information block type SIB-1 carrying；

Transmission unit, for the radio resource control RRC link set up when described Stochastic accessing according to described Stochastic accessing unit, carries out data transmission with described second access point.

13. UE according to claim 12, it is characterised in that also include:

Second receives unit, for receiving the message receiving described system information for instruction from the first access point that described second access point sends；

Described first receives unit receives described for indicating after the first access point receives the message of described system information at described second reception unit, continues from the described first access point described system information of reception.

14. UE according to claim 12, it is characterised in that also include:

3rd receives unit; after initiating Stochastic accessing at described Stochastic accessing unit; receive the response message of the described Stochastic accessing being carried on locked resource that the second access point sends; described locked resource refers to ensure the resource that the block error rate BLER that the data that described UE receives demodulate is less than or equal to set threshold value, and described locked resource includes: time resource, frequency resource or space resources.

15. according to the UE described in any one of claim 12-14, it is characterised in that

The described first described system information receiving unit reception is carried in RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling；

Or,

Described notification message in the trigger mechanism that described Stochastic accessing unit is corresponding carries in RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling.

16. 1 kinds of access points, it is characterised in that including:

Acquiring unit, for obtaining the system information supporting to access the second access point, described system information includes at least one in following item: the information of the second access point synchronous channel SCH carrying, the information of the second access point Physical Broadcast Channel PBCH carrying, information, the basic configuration information of the second access point Physical Random Access Channel PRACH or the basic configuration information of the second access point up channel of the second access point system information block type SIB-1 carrying；

First transmitting element, for sending the system information of described support access the second access point that described acquiring unit obtains to user equipment (UE)；

Second transmitting element, for sending for indicating the notification message or beep-page message accessing the second access point to UE, make described UE after receiving described notification message or beep-page message, initiate Stochastic accessing according to the described system information that described first transmitting element sends to the second access point, and carry out data transmission with described second access point according to the radio resource control RRC link set up during described Stochastic accessing.

17. access points according to claim 16, it is characterised in that described acquiring unit specifically for: receive the second access point by X2 interface, S1 interface or eat dishes without rice or wine send described support access the second access point system information.

18. according to the access point described in claim 16 or 17, it is characterised in that

The described system information that described first transmitting element sends is carried in radio resource control RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling；

Or,

The described notification message that described second transmitting element sends carries in RRC broadcast signaling, the proprietary signaling of RRC or physical layer signaling.

19. 1 kinds of access points, it is characterised in that including:

First transmitting element, for supporting that the system information accessing described access point is sent to the first access point, described system information includes at least one in following item: the information of described access point synchronous channel SCH carrying, the information of described access point Physical Broadcast Channel PBCH carrying, information, the basic configuration information of described access point Physical Random Access Channel PRACH or the basic configuration information of described access point up channel of the carrying of described access point system information block type SIB-1；

Processing unit, for receiving the Stochastic accessing that user equipment (UE) or is periodically initiated under trigger mechanism according to the described system information obtained from the first access point, described trigger mechanism includes at least one in following item: receive that described first access point sends for indicating the notification message accessing described access point, receive described first access point or the beep-page message of described access point transmission, or described UE has transmitting uplink data demand；

Transmission unit, carries out data transmission with described UE for the radio resource control RRC link set up when Stochastic accessing according to described processing unit.

20. access points according to claim 19, it is characterised in that also include:

Second transmitting element, obtains, to UE transmission, the system information supporting to access described access point for the described RRC link set up by described processing unit for instruction from the first access point.

21. according to the access point described in claim 19 or 20, it is characterised in that also include:

3rd transmitting element; after receiving, at described processing unit, the Stochastic accessing that UE initiates; being carried on locked resource by the response message of Stochastic accessing and be sent to UE, described locked resource refers to ensure the resource that the block error rate BLER that the data that described UE receives demodulate is less than or equal to set threshold value.

22. according to the access point described in claim 19 or 20, it is characterised in that described first transmitting element specifically for by X2 interface, S1 interface or eat dishes without rice or wine will support access described access point system information be sent to the first access point.

23. 1 kinds of network systems, it is characterised in that including:

First access point and the second access point；

Described second access point will be for supporting that the system information accessing the second access point is sent to described first access point, and described system information includes at least one in following item: the information of the second access point synchronous channel SCH carrying, the information of the second access point Physical Broadcast Channel PBCH carrying, information, the basic configuration information of the second access point Physical Random Access Channel PRACH or the basic configuration information of the second access point up channel of the second access point system information block type SIB-1 carrying；

Described first access point is for being sent to user equipment (UE) by described system information, make described UE under trigger mechanism or periodically initiate Stochastic accessing according to described system information to described second access point, and carry out data transmission with described second access point according to the radio resource control RRC link set up during described Stochastic accessing, described trigger mechanism includes at least one in following item: receive the notification message for indicating access the second access point that described first access point sends, receive described first access point or the beep-page message of the second access point transmission, or described UE has transmitting uplink data demand.

24. systems according to claim 23, it is characterised in that

Described first access point is the access point as described in any one of claim 16-18；Or,

Described second access point is the access point as described in any one of claim 19-22.