CN102387598A - 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

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

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

Existing P DCCH take a sub-frame before several symbols, if keep existing design constant, do not carry out any enhancing, can't adapt to requirement to the capacity extension of PDCCH; Transmit PDCCH if adopt through the RE resource that takies PD SCH, can influence the transmission of downlink data, thereby influence the downlink throughput capacity of whole network, influence user experience; And if the mode that adopts difference reduces the size of the payload of each PDCCH; Then require the channel between UE and the base station to remain unchanged within a certain period of time; And this is too desirable for real network; Because actual channel became when all being, therefore can influence the flexibility of scheduling, also can't 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 under the situation that does not influence user experience.

Summary of the invention

The invention provides a kind of dispatching method of Physical Downlink Control Channel, this method can solve the limited problem of PDCCH capacity under the situation that does not influence user experience.

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

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

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

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

The base station is organized this user of transmission to each user and is organized pairing Radio Network Temporary Identifier G-RNTI; Each UE in the user organizes decodes to the PDCCH that receives according to said G-RNTI; Wherein, the shared PDCCH of UE in a user organizes;

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

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

In same specified scope, and the UE of space isolation each other more than or equal to

is divided into same group with channel condition.

In said method, if UE _iThe correlated channels condition satisfy

And satisfy

Then said UE _iThe channel condition of channel condition and the said user UE in organizing in same specified scope; Wherein, Be original N in this user organizes _UEThe average amplitude response of individual UE;

Be original N in this user organizes _UEThe average phase response of individual UE does; H is the impulse response of channel, | h| is the amplitude of channel, and θ is the phase place of channel.

In said method, the space isolation between the 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 said PDCCH correspondence is uplink scheduling, UE sends upstream data to the base station, and this method further comprises:

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

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

Wherein, N _UEFor the user organizes interior UE number, n _UE-IDBe the ID of the UE of user in organizing, n _UE-IDSpan be 0 to N _UE-1,

Be the corresponding group sequence number of PHICH resource,

Be the sequence number of orthogonal sequence in the corresponding group of PHICH resource, I _{PRB_RA}Be the sequence number of Physical Resource Block PRB of the minimum of transmission PUSCH, n _DMRSBe 3 bit of the demodulated reference signal DMRS resource that is used for indicating PUSCH among the PDCCH,

Be total group of number of PHICH resource, I _PHICHBe to number corresponding parameter with configuration and the subframe of TDD, Spreading factor for the PHICH sequence.

In said method, if said PDCCH correspondence is descending scheduling, UE receives the downlink data that sends the base station and comprises:

When PDCCH was used for the PDSCH of dispatching downlink, if pass through the Ack/Nack of Physical Uplink Control Channel PUCCH feedback Physical Downlink Shared Channel PDSCH, the computational methods of then said PUCCH resource were:

n _PUCCH＝n _CCE+N _PUCCH+2*n _UE-ID；

N wherein _PUCCHRepresented the PUCCH resource of transmission A/N, n _CCEBe the sequence number of CCE of minimum of the PDCCH of dispatching downlink transfer of data, N _PUCCHBe the parameter of high-rise configuration, N _UEBe the number of the total UE in organizing, n _UE-IDFor the user organize in the ID of UE, n _UE-IDSpan is 0 to N _UE-1.

In said method, this method further comprises: UE is through switching between different user's groups with the corresponding U-RNTI of UE.

In said method, the shared PDCCH of UE in a said user organizes comprises:

The shared demodulated reference signal DMRS of UE in user of indication organizes in said PDCCH; The number of plies when UE layer in same user organizes shines upon is identical, and it is identical to mix the redundancy versions RV that retransmits HARQ automatically.

In said method; Said method further comprises: exist at the same time in the heterogeneous network deployment of macrocell and Microcell, the UE during little base station will be organized first user of macrocell is divided into one or more second users groups according to channel condition and the space isolation between the UE of UE;

Macro base station and/or little base station are organized this second user of transmission for each second user and are organized pairing G-RNTI; Each UE in second user organizes decodes to the PDCCH that receives according to said G-RNTI.

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

The base station reports accurate positional information that the channel condition of said UE is calculated through UE; Perhaps the base station metrical information that reports RSRP according to UE is calculated the channel condition of said UE; Perhaps the base station is according to reporting the descending time of reception difference of different cooperation points to calculate.

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

Description of drawings

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

Fig. 2 is a UE grouping sketch map under the single macro base station among the present invention;

Fig. 3 is the flow chart that among the present invention UE is divided into groups;

Fig. 4 is that heterogeneous network is disposed UE grouping sketch map down among the present invention,

Embodiment

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

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

Step 102, base station are divided into a plurality of user's groups according to the channel condition of UE and the space isolation between the UE with the UE under this base station, wherein comprise a plurality of UE in each user's group;

Step 103, the base station is organized this user of transmission to each user and is organized pairing Radio Network Temporary Identifier G-RNTI; Each UE in the user organizes decodes to the PDCCH that receives according to said G-RNTI; Wherein, the shared PDCCH of UE in a user organizes;

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

In order to make the object of the invention, technical scheme and advantage clearer, describe the present invention below in conjunction with accompanying drawing and specific embodiment.

Among a kind of embodiment of the present invention; In the network design that single macro base station covers; According to the channel condition of UE and the space isolation between the UE, all UE in the said macro base station cell covered are divided, will have the sufficiently high UE of close channel condition and space isolation and be divided into user's group; Wherein, comprise a plurality of UE in user's group.The close channel condition that is meant said UE of described in the present invention UE channel condition is in same specified scope.Said same specified scope can be set according to the network design situation of reality.Said space isolation is meant the dispersion degree between each UE spatially, and the AOA of each UE upward signal that can obtain through the base station assesses, and the spatial spreading degree is high more, and the phase mutual interference between the UE is more little.

Fig. 2 is a UE grouping sketch map under the single macro base station among the present invention; Of Fig. 2, with UE ₁And UE ₂Be divided into user's group, use G ₁Expression; With UE ₃And UE ₄Be divided into user's group, use G ₂Expression.Wherein, UE in same user's group satisfies its channel condition in same specified scope, and space isolation each other is greater than

In the specific embodiment in the present invention, whether channel condition is weighed in same specified scope through path loss; If it is close or in specified scope that each UE receives or send the value of path loss of signal; The channel condition of representing these UE is similar, i.e. expression can be provided with identical transmission plan even can use identical modulation and code rate scheme MCS value is transmitted.Wherein, if the frequency of using between the UE is identical, then path loss is relevant with distance between the base station with UE; If the frequency of using between the UE is different, then the frequency used with UE of path loss and UE are relevant with distance between the base station.The judgement of distance can report accurate position coordinate information through UE between UE and the base station, for example through the GPS location; Can estimate that the value of close RSRP means that channel condition is close according to the RSRP measurement result that UE reports in addition.Wherein, can be that base station measurement gets access to the correlated channels condition, or the relevant channel condition in the base station of UE measurement and report announcement.

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 do Wherein, certain user organizes G _iIn N is arranged _UEIndividual UE, then this N _UEThe average amplitude response of individual UE is:

The average phase response is:

For UE _i, organize G with the user _iIn the channel condition of each UE whether in same specified scope, can judge through the difference of amplitude and phase place and average; If promptly said UE _iSatisfy simultaneously

Can think UE _iOrganize G with the user _iThe channel condition of interior each UE is close, in same specified scope, and can be with UE _iBe included into the user and organize G _i

In an embodiment of the present invention, through the angle of arrival (AOA, Angle of arrival) of base station measurement UE upward signal space isolation is judged.Wherein, the 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 embodiment of the present invention, calculate the flow process of the channel condition between the UE through the aforementioned calculation formula, wherein, a plurality of UE are arranged under same macro base station.Fig. 3 is the flow chart that among the present invention UE is divided into groups; It is as shown in Figure 3,

Step 301, the user organizes 1 for empty in advance, relatively UE ₁And UE ₂Whether satisfy 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 satisfy condition, UE then ₁And UE ₂Channel condition in same specified scope, with UE ₁And UE ₂Be included into preparatory user and organize 1.If do not satisfy condition then abandon, next UE is compared.

Step 302 is calculated all UE successively, finds out the UE of all channel conditions in same specified scope and is included into preparatory user and organizes 1; To being calculated once more, find out the UE of all channel conditions in same specified scope and be classified as preparatory user and organize 2 by the UE that abandoned; Samsara successively is up to a plurality of UE that do not exist channel condition in same specified scope.

In this step,, preparatory user comprised UE if organizing 1 ₁And UE ₂Situation under, judge UE ₃Whether satisfy: $\frac{{\left|h_3\right|}^2-{\left|\stackrel{\‾}{h}\right|}^2}{{\left|\stackrel{\‾}{h}\right|}^2}\≤0.1$ 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 preparatory user's group, with UE from the said preparatory user group deletion of space isolation between the UE less than designated value, obtains ready-portioned user's group.

In this step, preparatory user is organized the UE deletion of not satisfying

condition of the difference of interior AOA.

From the above; The grouping of UE is obtained through the base station and is accomplished after channel condition and the space length of UE, accomplish the division operation of UE after, through relevant signaling in the base station side configuration; Organize this user of transmission to each user and organize corresponding wireless network temporary mark (RNTI; Radio Network Temporary Identifier), in order to distinguish mutually with RNTI of the prior art, it is corresponding to represent that with G-RNTI said RNTI and user organize at this.After UE was connected to the base station, the corresponding RNTI of this UE can be sent to UE in the base station, representes that with U-RNTI said RNTI is corresponding with UE in order to distinguish at this.Wherein, each UE in the user organizes decodes to the PDCCH that receives according to said G-RNTI; Wherein, the shared PDCCH of UE in a user organizes; All UE in to be the base station through a PDCCH organize a user dispatch simultaneously.

In actual deployment; UE may switch to another user's group from user's group, in this process, carries out the switching between user's group through U-RNTI, in an embodiment of the present invention; Said U-RNTI is corresponding with the ID that the user organizes interior UE; Promptly in same user organizes, the value of the corresponding different U-RNTI of the ID of different UE, said ID is used for UE different in the identifying user group; And can solve the collision problem of the PHICH resource between a plurality of UE and PUCCH resource in same group.

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

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

Wherein, N _UEFor the user organizes interior UE number, n _UE-IDBe the ID of the UE of user in organizing, n _UE-IDSpan be 0 to N _UE-1,

Be the corresponding group sequence number of PHICH resource,

Be the sequence number of orthogonal sequence in the corresponding group of PHICH resource, I _{PRB_RA}Be the sequence number of Physical Resource Block PRB of the minimum of transmission PUSCH, n _DMRSBe 3 bit of the demodulated reference signal DMRS resource that is used for indicating PUS CH among the PDCCH,

Be total group of number of PHICH resource, I _PHICHBe to number corresponding parameter with configuration and the subframe of TDD,

Spreading factor for the PHICH sequence.From the above; In the present invention; The resource of the corresponding PHICH of

expression, particularly corresponding corresponding running time-frequency resource and sign indicating number resource.

If to the decoded result of said PDCCH corresponding be descending scheduling, UE receives the downlink data that send the base station; When PDCCH was used for the PD SCH of dispatching downlink, if pass through the Ack/Nack of Physical Uplink Control Channel PUCCH feedback Physical Downlink Shared Channel PDSCH, the computational methods of then said PUCCH resource were:

n _PUCCH=n _CCE+ N _PUCCH+ 2*n _UE-IDN wherein _PUCCHRepresented the PUCCH resource of transmission A/N, n _CCEBe the sequence number of C CE of minimum of the PDCCH of dispatching downlink transfer of data, N _PUCCHBe the parameter of high-rise configuration, N _UEBe the number of the total UE in organizing, n _UE-IDFor the user organize in the ID of UE, n _UE-IDSpan is 0 to N _UE-1.From the above; Single in the present invention PDCCH is relevant with a plurality of UE; And each UE need send the PUCCH of oneself and comes descending transfer of data is fed back, and therefore not only the shared CCE sequence number with PDCCH is relevant for said PUCCH resource, and the ID that also organizes interior UE with the user simultaneously is n _UE-IDRelevant, so just be enough to distinguish the pairing different PUCCH resource of different UE.

Above embodiment carries out under single macro base station; Fig. 4 is that heterogeneous network is disposed UE grouping sketch map down among the present invention, and is as shown in Figure 4, exists at the same time in the heterogeneous network deployment of macro base station and little base station; Be in macro base station cover the UE that macrocell down and little base station cover Microcell edge down can be through next while of collaborative mode and macro base station and little base station communication; Can be that UE sends upstream data, can be the UE downlink data receiving, through working in coordination with of multiple spot; Obtain branch collection income, thereby improve the performance of whole system.

In scene shown in Figure 4, UE ₃And UE ₄All be in the edge of macro base station and little base station, have channel condition in same specified scope and space isolation enough big, with UE ₃And UE ₄Be divided into user's group, use same PDCCH to dispatch UE ₃And UE ₄The time with frequently transmission and reception.The number of UE in same user organizes is decided as the case may be, can regulate the number that the user organizes interior UE through the size that relevant parameter is set.Under said situation, the division of user's group need be satisfied the condition of division under the macro base station and the condition that little base station is divided down 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, the UE during little base station will be organized first user of macrocell is divided into one or more second users groups according to channel condition and the space isolation between the UE of UE.

Macro base station and/or little base station are organized this second user of transmission for each second user and are organized pairing Radio Network Temporary Identifier G-RNTI; Each UE in second user organizes decodes to the PDCCH that receives according to said G-RNTI.

In the described scene of Fig. 4, the account form of the channel condition of UE can report accurate positional information that the channel condition of said UE is calculated through UE for: base station; Perhaps the base station metrical information that reports RSRP according to UE is calculated the channel condition of said UE; Perhaps the base station is according to reporting the descending time of reception difference of different cooperation points to calculate.This scene is for approve the scene of a plurality of points that can cooperate via multi-point cooperative, without inapplicable the present invention of scene of multi-point cooperative approval.

In specific embodiment of the present invention; A plurality of UE under single macro base station covers divide the back and use same PDCCH to call; And in the heterogeneous network deployment of macro base station and the coexistence of little base station, a plurality of UE divide the back and use same PDCCH to call.

To the application scenarios of multi-point cooperative, transmission and reception when also can adopt multi-user association transmission MU-JT to carry out the data of a plurality of 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 in the time of PUSCH; Same frequency sending when also comprising PDCCH, and MU-JT same frequency sending when only being data division.

In sum; The present invention with channel condition in same specified scope and the sufficiently high a plurality of UE of space isolation be divided into user group; Through same PDCCH the user is organized interior all UE and carry out uniform dispatching, can effectively reduce the expense of PDCCH, improve the validity of PDCCH transmission.Be compared to the mode of difference, the adjustment of MCS value is carried out in the more effectively variation of adaptive channel.With respect to the mode of subframe binding, lower requirement can be arranged 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 that is compared to through taking PDSCH transmits PDCCH, can reduce the ratio of control channel in whole PRB, improves the efficient of transmission.

The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.

Claims (10)

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

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

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

The base station is organized this user of transmission to each user and is organized pairing Radio Network Temporary Identifier G-RNTI; Each UE in the user organizes decodes to the PDCCH that receives according to said G-RNTI; Wherein, the shared PDCCH of UE in a user organizes;

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

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

In same specified scope, and the UE of space isolation each other more than or equal to

is divided into same group with channel condition.

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

If UE _iThe correlated channels condition satisfy

And satisfy Then said UE _iThe channel condition of channel condition and the said user UE in organizing in same specified scope; Wherein,

Be original N in this user organizes _UEThe average amplitude response of individual UE;

Be original N in this user organizes _UEThe average phase response of individual UE does; H is the impulse response of channel, | h| is the amplitude of channel, and θ is the phase place of channel.

4. method according to claim 2 is characterized in that, the space isolation between the 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 said PDCCH correspondence is uplink scheduling, UE sends upstream data to the base station, and this method further comprises:

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

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

Wherein, N _UEFor the user organizes interior UE number, n _UE-IDBe the ID of the UE of user in organizing, n _UE-IDSpan be 0 to N _UE-1,

Be the corresponding group sequence number of PHICH resource,

Be the sequence number of orthogonal sequence in the corresponding group of PHICH resource, I _{PRB_RA}Be the sequence number of Physical Resource Block PRB of the minimum of transmission PUSCH, n _DMRSBe 3 bit of the demodulated reference signal DMRS resource that is used for indicating PUS CH among the PDCCH,

Be total group of number of PHICH resource, I _PHICHBe to number corresponding parameter with configuration and the subframe of TDD, Spreading factor for the PHICH sequence.

6. method according to claim 1 is characterized in that, if said PDCCH correspondence is descending scheduling, UE receives the downlink data that sends the base station and comprises:

When PDCCH was used for the PDSCH of dispatching downlink, if pass through the Ack/Nack of Physical Uplink Control Channel PUCCH feedback Physical Downlink Shared Channel PDSCH, the computational methods of then said PUCCH resource were:

n _PUCCH＝n _CCE+N _PUCCH+2*n _UE-ID；

N wherein _PUCCHRepresented the PUCCH resource of transmission A/N, n _CCEBe the sequence number of CCE of minimum of the PDCCH of dispatching downlink transfer of data, N _PUCCHBe the parameter of high-rise configuration, N _UEBe the number of the total UE in organizing, n _UE-IDFor the user organize in the ID of UE, n _UE-IDSpan is 0 to N _UE-1.

7. method according to claim 1 is characterized in that, this method further comprises:

UE is through switching between different user's groups with the corresponding U-RNTI of UE.

8. method according to claim 1 is characterized in that, the shared PDCCH of UE in a said user organizes comprises:

The shared DMRS of UE in user of indication organizes in said PDCCH; The number of plies when UE layer in same user organizes shines upon is identical, and it is identical to mix the redundancy versions RV that retransmits HARQ automatically.

9. method according to claim 1; It is characterized in that; Said method further comprises: exist at the same time during the heterogeneous network of macrocell and Microcell disposes, the UE of little base station in will first user group under macrocell is divided into one or more second users according to the channel condition of UE and the space isolation between the UE and organizes;

Macro base station and/or little base station are organized this second user of transmission for each second user and are organized pairing G-RNTI; Each UE in second user organizes decodes to the PDCCH that receives according to said G-RNTI.

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

The base station reports accurate positional information that the channel condition of said UE is calculated through UE; Perhaps the base station metrical information that reports RSRP according to UE is calculated the channel condition of said UE; Perhaps the base station is according to reporting the descending time of reception difference of different cooperation points to calculate.

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