CN102387598B - Method for scheduling physical downlink control channel (PDCCH) - Google Patents

Abstract

The invention discloses a method for scheduling a physical downlink control channel (PDCCH). The method comprises the following steps: a base station obtains channel conditions of UE (user equipment) and space isolation among the UE, and then divides the UE under the base station into a plurality of user groups according to the channel conditions of the UE and the space isolation among the UE, wherein, each user group contains a plurality of the UE; the base station sends a G-RNTI (group-radio network temporary identifier) corresponding to each user group to the user groups; each UE in one user group decodes the received PDCCH according to the G-RNTI corresponding to the user group, wherein, the UE in one user group share one PDCCH; if the decoding result for the PDCCH is corresponding to an uplink scheduling mode, the UE sends uplink data to the base station; and if the decoding result for the PDCCH is corresponding to a downlink scheduling mode, the UE receives downlink data sent by the base station. By adopting the method, the problem of limited capacity of the PDCCH can be solved without affecting user experience.

Description

A kind of dispatching method of Physical Downlink Control Channel

Technical field

The present invention relates to communication technical field, particularly relate to a kind of dispatching method of Physical Downlink Control Channel.

Background technology

In long evolving system LTE, in order to be suitable for different transmission environments, in up link and down link, all design multiple Downlink Control Information (DCI, Downlink Control Information) form, selected suitable transmission plan for meeting the UE of respective channel condition.Generally, Physical Downlink Control Channel (PDCCH, Physical Downlink Control Channel) take front several OFDM symbols of a subframe, transmit descending control information, carry out Physical Uplink Shared Channel (PUSCH, Physical Uplink Shared Channel) on upstream data or the scheduling of downlink data on Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel).Along with the increase of UE number, and single UE support multiple carrier waves unit (CC, Carrier Component) time transmission, and the deployment of heterogeneous network, cause the Downlink Control Information of needs transmission more and more, the limited problem of capacity of PDCCH is day by day obvious.

In existing technology, be generally thought of as PDCCH and distribute more resource particle (RE, Resource Element), comprise in the mode of time-division or in the mode of frequency division and will originally be used for transmitting PDCCH for the part RE of PD SCH transmission.Also having is exactly the size of considering to reduce by the mode of difference the payload (PlayLoad) of PDCCH, by reducing the resource of the shared RE of each PDCCH, ensures that the RE resource of same quantity can be dispatched more UE.

Existing PDCCH takies front several symbols of a subframe, if keep existing design constant, does not carry out any enhancing, cannot adapt to the requirement of the capacity extension to PDCCH; Transmit PDCCH if adopted by the RE resource that takies PD SCH, can affect the transmission of downlink data, thereby affect the downlink throughput capacity of whole network, affect user and experience; And if the mode that adopts difference reduces the size of the payload of each PDCCH, require the channel between UE and base station to remain unchanged within a certain period of time, and this is too desirable for real network, because become when actual channel is all, therefore can affect the flexibility of scheduling, also cannot make the channel condition of the maximum adaptive UE of PDCCH.

In sum, scheme of the prior art can not solve the limited problem of PDCCH capacity in the situation that not affecting user's experience.

Summary of the invention

The invention provides a kind of dispatching method of Physical Downlink Control Channel, the method can, in the situation that not affecting user's experience, solve the limited problem of PDCCH capacity.

For achieving the above object, technical scheme of the present invention is achieved in that

The dispatching method that the invention discloses a kind of Physical Downlink Control Channel, the method comprises:

Space isolation between channel condition and the UE of base station acquisition user equipment (UE);

Base station, according to the space isolation between the channel condition of UE and UE, is divided into multiple user's groups by the UE under this base station, wherein in each user's group, comprises multiple UE;

Base station is organized this user of transmission to each user and is organized corresponding Radio Network Temporary Identifier G-RNTI; Each UE in user's group decodes to the PDCCH receiving according to described G-RNTI; Wherein, the UE in user's group shares a PDCCH;

If to the decoded result of described PDCCH corresponding be uplink scheduling, UE sends upstream data to base station; If to the decoded result of described PDCCH corresponding be descending scheduling, UE receive base station send downlink data.

In said method, described base station, according to the space isolation between the channel condition of user equipment (UE) and UE, is divided into multiple user's groups by the UE under this base station and comprises:

By channel condition, in same specified scope, and space isolation is each other more than or equal to uE be divided into same group.

In said method, if UE _icorrelated channels condition meet and meet described UE _ichannel condition and described user's group in the channel condition of UE in same specified scope; Wherein, that this user organizes interior original N _uEthe average amplitude response of individual UE; that this user organizes interior original N _uEthe average phase response of individual UE is; H is the impulse response of channel, | the amplitude that h| is channel, the phase place that θ is channel.

In said method, the space isolation between base station measurement UE comprises: the angle of arrival AOA's of the upward signal of each UE of base station measurement is poor.

In said method, if described PDCCH corresponding be uplink scheduling, UE sends upstream data to base station, the method further comprises:

If the Physical Uplink Shared Channel PUSCH of uplink scheduling is fed back by physical mixed automatic re-transmission indicating channel PHICH, user organize in the computational methods of PHICH resource of each UE be:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}+n_{\mathrm{DMRS}}+2*n_{\mathrm{UE}-\mathrm{ID}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, N _uEfor the UE number in user's group, n _uE-IDfor the ID of the UE in user's group, n _uE-IDspan be 0 to N _uE-1, for group sequence number corresponding to PHICH resource, for the sequence number of orthogonal sequence in group corresponding to PHICH resource, I _{pRB_RA}for the sequence number of minimum Physical Resource Block PRB of transmission PUSCH, n _dMRSfor being used to refer to 3 bit of demodulated reference signal DMRS resource of PUSCH in PDCCH, for total group of number of PHICH resource, I _pHICHto number corresponding parameter with configuration and the subframe of TDD, for the spreading factor of PHICH sequence.

In said method, if described PDCCH corresponding be descending scheduling, UE receive base station send downlink data comprise:

In the time that PDCCH is used for the PDSCH of dispatching downlink, if by the Ack/Nack of Physical Uplink Control Channel PUCCH feedback Physical Downlink Shared Channel PDSCH, the computational methods of described PUCCH resource are:

n _PUCCH＝n _CCE+N _PUCCH+2*n _UE-ID；

Wherein n _pUCCHrepresent the PUCCH resource of transmission A/N, n _cCEthe sequence number of the minimum CCE of the PDCCH of dispatching downlink transfer of data, N _pUCCHthe parameter of high-rise configuration, N _uEfor the number of the total UE in group, n _uE-IDfor user organizes the ID of interior UE, n _uE-IDspan is 0 to N _uE-1.

In said method, the method further comprises: UE by and U-RNTI corresponding to UE between different user's groups, switch.

In said method, the UE in described user's group shares a PDCCH and comprises:

In described PDCCH, indicate a demodulated reference signal DMRS that the UE in user's group is shared; Number of plies when UE layer in same user's group shines upon is identical, and the redundancy versions RV of mixed automatic retransfer HARQ is identical.

In said method, described method further comprises: exist at the same time in the heterogeneous network deployment of macrocell and Microcell, micro-base station is divided into one or more second user's groups by the UE in the first user group of macrocell according to the space isolation between the channel condition of UE and UE;

Macro base station and/or micro-base station are organized this second user of transmission to each the second user and are organized corresponding G-RNTI; Each UE in second user's group decodes to the PDCCH receiving according to described G-RNTI.

In said method, the channel condition of described each UE comprises in same range:

Base station reports accurate positional information to calculate the channel condition of described UE by UE; Or base station reports the metrical information of RSRP to calculate the channel condition of described UE according to UE; Or base station is according to poor calculating of descending time of reception that reports different cooperation points.

From the above, in the dispatching method of a kind of Physical Downlink Control Channel provided by the invention, base station obtains the space isolation between channel condition and the UE of UE; Base station, according to the space isolation between the channel condition of UE and UE, is divided into multiple user's groups by the UE under this base station, wherein in each user's group, comprises multiple UE; Base station is organized this user of transmission to each user and is organized corresponding Radio Network Temporary Identifier G-RNTI; Each UE in user's group decodes to the PDCCH receiving according to described G-RNTI; Wherein, the UE in user's group shares a PDCCH; If to the decoded result of described PDCCH corresponding be uplink scheduling, UE sends upstream data to base station; If to the decoded result of described PDCCH corresponding be descending scheduling, UE receive base station send downlink data.Technical scheme provided by the invention by channel condition in same specified scope and the sufficiently high multiple UE of space isolation be divided into user's group, by same PDCCH, user is organized to interior all UE and carry out United Dispatching, can effectively reduce the expense of PDCCH, improve the validity of PDCCH transmission.

Brief description of the drawings

Fig. 1 is the flow chart of the dispatching method of a kind of PDCCH in the present invention;

Fig. 2 is UE grouping schematic diagram under single macro base station in the present invention;

Fig. 3 is the flow chart in the present invention, UE being divided into groups;

Fig. 4 is that in the present invention, heterogeneous network is disposed lower UE grouping schematic diagram,

Embodiment

Fig. 1 is the flow chart of the dispatching method of a kind of PDCCH in the present invention, as shown in Figure 1,

Step 101, base station obtains the space isolation between channel condition and the UE of UE;

Step 102, base station, according to the space isolation between the channel condition of UE and UE, is divided into multiple user's groups by the UE under this base station, wherein in each user's group, comprises multiple UE;

Step 103, base station is organized this user of transmission to each user and is organized corresponding Radio Network Temporary Identifier G-RNTI; Each UE in user's group decodes to the PDCCH receiving according to described G-RNTI; Wherein, the UE in user's group shares a PDCCH;

Step 104, if to the decoded result of described PDCCH corresponding be uplink scheduling, UE sends upstream data to base station; If to the decoded result of described PDCCH corresponding be descending scheduling, UE receive base station send downlink data.

In order to make the object, technical solutions and advantages of the present invention clearer, describe the present invention below in conjunction with the drawings and specific embodiments.

In a kind of embodiment of the present invention, in the network design covering at single macro base station, according to the space isolation between the channel condition of UE and UE, all UE in the community that described macro base station is covered divide, be divided into user's group by thering is the sufficiently high UE of close channel condition and space isolation, wherein, in user's group, comprise multiple UE.The described close channel condition that refers to described UE of UE channel condition is in same specified scope in the present invention.Described same specified scope can be set according to actual network design situation.Described space isolation refers to the spatially dispersion degree between each UE, and the AOA of each UE upward signal that can obtain by base station assesses, and spatial cohesion is higher, and the phase mutual interference between UE is less.

Fig. 2 is UE grouping schematic diagram under single macro base station in the present invention; As described in Figure 2, by UE ₁and UE ₂be divided into user's group, use G ₁represent; By UE ₃and UE ₄be divided into user's group, use G ₂represent.Wherein, the UE in same user's group meets its channel condition in same specified scope, and space isolation is each other greater than

In specific embodiment in the present invention, by path loss, whether channel condition is weighed in same specified scope; If each UE receives or the value of the path loss of transmitted signal is close or in specified scope, the channel condition that represents these UE is similar, represents that identical transmission plan can be set even can use identical modulation and code rate scheme MCS value to transmit.Wherein, if the frequency using between UE is identical, path loss is with the Range-based between UE and base station; If the frequency difference using between UE, the Range-based between frequency and UE and base station that path loss is used with UE.Between UE and base station, the judgement of distance can report accurate location coordinate information by UE, for example, locate by GPS; The RSRP measurement result that can report according to UE in addition estimates, the value of close RSRP means that channel condition is close.Wherein, can be that base station measurement gets correlated channels condition, or the relevant channel condition in base station of report in UE measurement.

In preferred embodiment of the present invention, a kind of whether computational methods in same specified scope of UE channel condition are provided.Wherein, the impulse response of general channel can be expressed as h, | h| represents the amplitude of channel, and θ represents the phase place of channel, and h=|h|e ^{j θ}suppose UE ₁channel impulse response be h ₁, uE _ichannel impulse response be wherein, certain user organizes G _iinside there is N _uEindividual UE, this N _uEthe average amplitude response of individual UE is: average phase response is: for UE _i, organize G with user _iin the channel condition of each UE whether in same specified scope, can judge by the difference of phase and magnitude and average; If i.e. described UE _imeet simultaneously can think UE _iorganize G with user _ithe channel condition of interior each UE is close, in same specified scope, and can be by UE _ibe included into user and organize G _i.

In an embodiment of the present invention, by the angle of arrival (AOA, Angle of arrival) of base station measurement UE upward signal, space isolation is judged.Wherein, base station records UE _iand UE _jaOA be respectively AOA _iand AOA _jif, uE is described so _iand UE _jcan be classified as one group.

In specific embodiments of the invention, calculate the flow process of the channel condition between UE by above-mentioned computing formula, wherein, there are multiple UE under same macro base station.Fig. 3 is the flow chart in the present invention, UE being divided into groups; As shown in Figure 3,

Step 301, pre-user organizes 1 for empty, relatively UE ₁and UE ₂whether meet above-mentioned condition, that is: wherein, ${\left|\stackrel{\‾}{h}\right|}^2=\frac{{\left|h_1\right|}^2+{\left|h_2\right|}^2}{2},$ $\stackrel{\‾}{\mathrm{\θ}}=\frac{{\mathrm{\θ}}_1+{\mathrm{\θ}}_2}{2}.$ If satisfied condition, UE ₁and UE ₂channel condition in same specified scope, by UE ₁and UE ₂be included into pre-user and organize 1.If do not satisfied condition, abandon, next UE is contrasted.

Step 302, calculates all UE successively, finds out the UE of all channel conditions in same specified scope and is included into pre-user and organizes 1; To again being calculated by the UE that abandoned, find out the UE of all channel conditions in same specified scope and be classified as pre-user and organize 2; , until there are not the multiple UEs of channel condition in same specified scope in samsara successively.

In this step, if organizing 1, pre-user comprised UE ₁and UE ₂situation under, judge UE ₃whether meet: $\frac{{\left|h_3\right|}^2-{\left|\stackrel{\‾}{h}\right|}^2}{{\left|\stackrel{\‾}{h}\right|}^2}\≤0.1$ And $|{\mathrm{\θ}}_3-\stackrel{\‾}{\mathrm{\θ}}|\≤\frac{\mathrm{\π}}{5},$ Wherein, ${\left|\stackrel{\‾}{h}\right|}^2=\frac{{\left|h_1\right|}^2+{\left|h_2\right|}^2+{\left|h_3\right|}^2}{3},$ $\stackrel{\‾}{\mathrm{\θ}}=\frac{{\mathrm{\θ}}_1+{\mathrm{\θ}}_2+{\mathrm{\θ}}_3}{3}.$

Step 303, in each pre-user's group, the UE that space isolation between UE is less than to designated value deletes from described pre-user's group, obtains ready-portioned user's group.

In this step, not meeting the difference of the AOA in pre-user's group the UE of condition deletes.

From the above, the grouping of UE is obtained and is completed after the channel condition of UE and space length by base station, complete after the division operation of UE, by the related signaling in base station side configuration, organize this user of transmission to each user and organize corresponding Radio Network Temporary Identifier (RNTI, Radio Network Temporary Identifier), in order to distinguish with RNTI of the prior art, represent that with G-RNTI described RNTI and user organize at this corresponding.Be connected to behind base station at UE, base station can send the RNTI that this UE is corresponding to UE, represents that described RNTI is corresponding with UE in order to distinguish at this with U-RNTI.Wherein, each UE in user's group decodes to the PDCCH receiving according to described G-RNTI; Wherein, the UE in user's group shares a PDCCH; Be that dispatch all UE in user's group by a PDCCH simultaneously base station.

In actual deployment, UE may be switched to another user's group from user's group, in this process, carry out the switching between user's group by U-RNTI, in an embodiment of the present invention, described U-RNTI is corresponding with the ID of the UE in user's group, in same user organizes, the value of the corresponding different U-RNTI of the ID of different UE, described ID is for different UE in identifying user group; And can solve the PHICH resource between multiple UE and the collision problem of PUCCH resource in same group.

Particularly, if to the decoded result of described PDCCH corresponding be uplink scheduling, UE sends upstream data to base station; If the Physical Uplink Shared Channel PUSCH of uplink scheduling is fed back by physical mixed automatic re-transmission indicating channel PHICH, user organize in the computational methods of PHICH resource of each UE be:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}+n_{\mathrm{DMRS}}+2*n_{\mathrm{UE}-\mathrm{ID}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, N _uEfor the UE number in user's group, n _uE-IDfor the ID of the UE in user's group, n _uE-IDspan be 0 to N _uE-1, for group sequence number corresponding to PHICH resource, for the sequence number of orthogonal sequence in group corresponding to PHICH resource, I _{pRB_RA}for the sequence number of minimum Physical Resource Block PRB of transmission PUSCH, n _dMRSfor being used to refer to 3 bit of demodulated reference signal DMRS resource of PUS CH in PDCCH, for total group of number of PHICH resource, I _pHICHto number corresponding parameter with configuration and the subframe of TDD, for the spreading factor of PHICH sequence.From the above, in the present invention, represent the resource of corresponding PHICH, particularly corresponding corresponding running time-frequency resource and code resource.

If to the decoded result of described PDCCH corresponding be descending scheduling, UE receive base station send downlink data; In the time that PDCCH is used for the PD SCH of dispatching downlink, if by the Ack/Nack of Physical Uplink Control Channel PUCCH feedback Physical Downlink Shared Channel PDSCH, the computational methods of described PUCCH resource are:

N _pUCCH=n _cCE+ N _pUCCH+ 2*n _uE-ID; Wherein n _pUCCHrepresent the PUCCH resource of transmission A/N, n _cCEthe sequence number of the minimum C CE of the PDCCH of dispatching downlink transfer of data, N _pUCCHthe parameter of high-rise configuration, N _uEfor the number of the total UE in group, n _uE-IDfor user organizes the ID of interior UE, n _uE-IDspan is 0 to N _uE-1.From the above, single PDCCH is relevant to multiple UE in the present invention, and each UE needs to send own PUCCH descending transfer of data is fed back, therefore described PUCCH resource is not only relevant to the shared CCE sequence number of PDCCH, and the while is also n with the ID that user organizes interior UE _uE-IDrelevant, be so just enough to distinguish the corresponding different PUCCH resource of different UE.

Above embodiment carries out under single macro base station, Fig. 4 is that in the present invention, heterogeneous network is disposed lower UE grouping schematic diagram, as shown in Figure 4, exist at the same time in the heterogeneous network deployment of macro base station and micro-base station, the UE at the edge, Microcell under the macrocell under macro base station covers and micro-base station cover can come while and macro base station and micro-base station communication by collaborative mode, can be that UE sends upstream data, it can be UE downlink data receiving, by working in coordination with of multiple spot, obtain diversity income, thereby improve the performance of whole system.

In the scene shown in Fig. 4, UE ₃and UE ₄all edges in macro base station and micro-base station, there is channel condition in same specified scope and space isolation enough large, by UE ₃and UE ₄be divided into user's group, dispatch UE with same PDCCH ₃and UE ₄time with sending and receiving frequently.The number of UE in same user's group is determined as the case may be, can regulate user to organize the number of interior UE by the size of relevant parameter is set.In said case, the division of user group need to meet the condition of dividing under the condition of dividing under macro base station and micro-base station simultaneously.

In an embodiment of the present invention, under heterogeneous network is disposed, the mode that user's group is divided is specially, exist at the same time in the heterogeneous network deployment of macrocell and Microcell, micro-base station is divided into one or more second user's groups by the UE in the first user group of macrocell according to the space isolation between the channel condition of UE and UE.

Macro base station and/or micro-base station are organized this second user of transmission to each the second user and are organized corresponding Radio Network Temporary Identifier G-RNTI; Each UE in second user's group decodes to the PDCCH receiving according to described G-RNTI.

In the scene described in Fig. 4, the account form of the channel condition of UE can be: base station reports accurate positional information to calculate the channel condition of described UE by UE; Or base station reports the metrical information of RSRP to calculate the channel condition of described UE according to UE; Or base station is according to poor calculating of descending time of reception that reports different cooperation points.This scene is to approve the scene of multiple points that can cooperate via multi-point cooperative, without inapplicable the present invention of scene of multi-point cooperative accreditation.

In specific embodiments of the invention, multiple UE under single macro base station covers divide the same PDCCH of rear use and call, and during the heterogeneous network that coexists of macro base station and micro-base station disposes, multiple UE divide the same PDCCH of rear use and call.

For the application scenarios of multi-point cooperative, sending and receiving when also can adopting multi-user association transmission MU-JT to carry out the data of multiple UE.Similar with the deployment scenario of single macro base station, the difference of the present invention and MU-JT remains and is, the present invention is not only PDSCH, same frequency sending when PUSCH, same frequency sending when also comprising PDCCH, and MU-JT same frequency sending when being only data division.

In sum, the present invention by channel condition in same specified scope and the sufficiently high multiple UE of space isolation be divided into user's group, by same PDCCH, user is organized to interior all UE and carry out United Dispatching, can effectively reduce the expense of PDCCH, improve the validity of PDCCH transmission.Be compared to the mode of difference, the more effectively variation of adaptive channel, carries out the adjustment of MCS value.With respect to the mode of subframe binding, can there is lower requirement to the time variation of channel.Be compared to the situation that traditional single PDCCH dispatches single UE, can reduce the resource of the shared RE of PDCCH.The RE being compared to by taking PDSCH transmits PDCCH, can reduce the ratio of control channel in whole PRB, improves the efficiency of transmission.

The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of making, be equal to replacement, improvement etc., within all should being included in the scope of protection of the invention.

Claims (9)

1. a dispatching method for Physical Downlink Control Channel, is characterized in that, the method comprises:

Base station obtains the space isolation between channel condition and the UE of user equipment (UE);

Base station, according to the space isolation between the channel condition of UE and UE, is divided into multiple user's groups by the UE under this base station, wherein in each user's group, comprises multiple UE;

Base station is organized this user of transmission to each user and is organized corresponding Radio Network Temporary Identifier G-RNTI; Each UE in user's group decodes to the PDCCH receiving according to described G-RNTI; Wherein, the UE in user's group shares a PDCCH;

If to the decoded result of described PDCCH corresponding be uplink scheduling, UE sends upstream data to base station; If to the decoded result of described PDCCH corresponding be descending scheduling, UE receive base station send downlink data;

Wherein, if described PDCCH corresponding be uplink scheduling, UE sends upstream data to base station, the method further comprises:

If the Physical Uplink Shared Channel PUSCH of uplink scheduling is fed back by physical mixed automatic re-transmission indicating channel PHICH, user organize in the computational methods of PHICH resource of each UE be:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}+n_{\mathrm{DMRS}}+2*n_{\mathrm{UE}-\mathrm{ID}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, N _uEfor the UE number in user's group, n _uE-IDfor the ID of the UE in user's group, n _uE-IDspan be 0 to N _uE-1, for group sequence number corresponding to PHICH resource, for the sequence number of orthogonal sequence in group corresponding to PHICH resource, I _{pRB_RA}for the sequence number of minimum Physical Resource Block PRB of transmission PUSCH, n _dMRSfor being used to refer to 3 bit of demodulated reference signal DMRS resource of PUSCH in PDCCH, for total group of number of PHICH resource, I _pHICHto number corresponding parameter with configuration and the subframe of TDD, for the spreading factor of PHICH sequence.

2. method according to claim 1, is characterized in that, described base station, according to the space isolation between the channel condition of user equipment (UE) and UE, is divided into multiple user's groups by the UE under this base station and comprises:

By channel condition, in same specified scope, and space isolation is each other more than or equal to uE be divided into same group.

3. method according to claim 2, is characterized in that, described channel condition comprises in same specified scope:

If UE _icorrelated channels condition meet and meet the channel condition of the UE in the channel condition of described UEi and described user's group is in same specified scope; Wherein, ${\left|\stackrel{\‾}{h}\right|}^2=\frac{{\left|h_1\right|}^2+{\left|h_2\right|}^2+...+{\left|{h_N}_{\mathrm{UE}}\right|}^2}{N_{\mathrm{UE}}},$ That this user organizes interior original N _uEthe average amplitude response of individual UE; that this user organizes interior original N _uEthe average phase response of individual UE is; H is the impulse response of channel, | the amplitude that h| is channel, the phase place that θ is channel.

4. method according to claim 2, is characterized in that, the space isolation between base station measurement UE comprises:

The angle of arrival AOA's of the upward signal of each UE of base station measurement is poor.

5. method according to claim 1, is characterized in that, if described PDCCH corresponding be descending scheduling, UE receive base station send downlink data comprise:

In the time that PDCCH is used for the PDSCH of dispatching downlink, if by the Ack/Nack of Physical Uplink Control Channel PUCCH feedback Physical Downlink Shared Channel PDSCH, the computational methods of described PUCCH resource are:

n _PUCCH＝n _CCE+N _PUCCH+2*n _UE-ID；

Wherein n _pUCCHrepresent the PUCCH resource of transmission A/N, n _cCEthe sequence number of the minimum CCE of the PDCCH of dispatching downlink transfer of data, N _pUCCHthe parameter of high-rise configuration, N _uEfor the number of the total UE in group, n _uE-IDfor user organizes the ID of interior UE, n _uE-IDspan is 0 to N _uE-1.

6. method according to claim 1, is characterized in that, the method further comprises:

UE by and U-RNTI corresponding to UE between different user's groups, switch.

7. method according to claim 1, is characterized in that, the UE in described user's group shares a PDCCH and comprises:

In described PDCCH, indicate a DMRS that the UE in user's group is shared; Number of plies when UE layer in same user's group shines upon is identical, and the redundancy versions RV of mixed automatic retransfer HARQ is identical.

8. method according to claim 1, it is characterized in that, described method further comprises: exist at the same time in the heterogeneous network deployment of macrocell and Microcell, micro-base station is divided into one or more second user's groups by the UE in the first user group under macrocell according to the space isolation between the channel condition of UE and UE;

Macro base station and/or micro-base station are organized this second user of transmission to each the second user and are organized corresponding G-RNTI; Each UE in second user's group decodes to the PDCCH receiving according to described G-RNTI.

9. method according to claim 8, is characterized in that, the channel condition of described each UE comprises in same range:

Base station reports accurate positional information to calculate the channel condition of described UE by UE; Or base station reports the metrical information of RSRP to calculate the channel condition of described UE according to UE; Or base station is according to poor calculating of descending time of reception that reports different cooperation points.