CN101222260A - Device and method for transmitting control signaling - Google Patents

Abstract

The invention discloses a device and a method mapping control signaling to physical layer time-frequency resource and transmitting the control signaling; the method comprises the following steps: a base station sends common control signaling to a subscriber and indicates the information such as the physical resource quantity and address occupied by follow-up control signaling; the base station carries out continuous logical numbering of the physical time-frequency resource transmitting the control signaling, and allocates the logical resource to each control signaling in turn; moreover, according to the mapping relation between the logical resource and the physical time-frequency resource, the base station obtains the physical time-frequency resource occupied by each control signaling; finally, the base station transmits the control signaling on the physical time-frequency resource. The invention provides the concrete method through which the control signaling is mapped to the physical layer time-frequency resource and is transmitted, thereby solving the problem of transmitting the control signaling and realizing ideal coverage of the control signaling. Moreover, the method can also be used to divide a control signaling unit.

Description

The equipment of control channel and method

Technical field

The present invention relates to wireless communication system, relate to a kind of equipment and method of the control channel in wireless communication system in particular.

Background technology

Now, 3GPP standardization body has set about beginning its existing system standard is carried out long-term evolution (LTE).In the middle of numerous physical layer transmission technology, be the focus of research based on the downlink transfer technology of OFDM (OFDM) with based on the uplink technology that single-carrier frequency division multiple access inserts (SCFDMA).

According to existing discussion result about LTE, be LTE system descending frame structure as shown in Figure 1, Radio Resource in the LTE system is meant time and the frequency resource that system or subscriber equipment can take, can (101-103) do differentiation with radio frames (radio frame) for unit, the time span of radio frames is identical with the time span of the radio frames of WCDMA system, and promptly its time length is 10ms; Each frame is subdivided into a plurality of time slots (slot) (104-107), and present hypothesis is that each radio frames comprises 20 time slots, and time slots length is 0.5ms; Each time slot comprises a plurality of OFDM symbols again, and according to present hypothesis, the time span of effective OFDM symbol is about 66.7 μ s in the LTE system.The time span of the CP of OFDM symbol can have two kinds, promptly the time span of short CP is approximately 4.8 μ s, the about 16.7 μ s of the time span of long CP, long CP time slot is used for many Cell Broadcast CB/multicasts and the very large situation of radius of society, short CP time slot (108) comprises 7 OFDM symbols, and long CP time slot (109) comprises 6 OFDM symbols.According to present discussion result, Transmission Time Interval (TTI) is 1ms, promptly equals two time slots length.

In communication system, the base station is by constantly sending layer one/layer two control signaling and finish resource allocation and to the control of the transmitting-receiving of each subscriber equipment in each scheduling.According to the function of different resource allocations, the bit number of corresponding layer one/layer two control signaling generally is different.For example in the discussion of current LTE, layer one/layer two control signaling can be divided into scheduling control signaling of downlink and ascending scheduling control signaling, because the control information difference that need send when up or descending scheduling in the system, their bit number generally are different.Scheduling control signaling of downlink can be divided into control signaling of dispatching distributed resource allocation and the control signaling of dispatching local formula resource allocation again, and their bit number also is different generally speaking.

In addition according among the LTE to the result of study of control channel, to the control channel of each specific function, adopt the transformat of two or more (comprising two kinds), promptly adopt different MCS (Modulation﹠amp; Coding Scheme), help improving interference between all adjacent sub-district of physical layer resources utilance peace.

Comprehensive above two kinds of factors, promptly the bit number of the control signaling of difference in functionality is generally different, and the control channel of identical function may adopt different MCS, and these two kinds of factors have caused having polytype control channel in physical layer.Attention: the MCS configuration of the control signaling of difference in functionality can be different, and promptly the species number of the MCS of the control signaling of difference in functionality can be inequality on the one hand; The exact value of the MCS of the control signaling of difference in functionality can not be equal fully on the other hand, and is just more approaching, can think that here these approximately equalised MCS are same MCS.Be without loss of generality, supposing the system is the MCS of the control signaling configuration similar number of every kind of difference in functionality, and note is divided into the M kind to the control signaling according to function, and the MCS of employing has the N kind, and at this moment the number of types of physical layer control channel can reach the MN kind.It should be noted that behind the bit number and MCS of taking all factors into consideration the control signaling, the number of the physical layer running time-frequency resource that dissimilar control channels needs can equate.

The number of supposing the OFDM symbol in the subframe is N, and the control signaling can only transmit among preceding n the OFDM in subframe, according to the discussion result among the present LTE, N=14 and n≤3.According to the discussion result of present LTE, downlink data transmission can start from the OFDM symbol that layer one/layer two control channel finish the earliest simultaneously.The quantity of Chuan Shu control channel as required, control channel generally can not take n OFDM symbol, and these subcarriers that are not used for control channel can be used for downlink data transmission.According to the discussion result among the present LTE, if control channel ends at the 3rd OFDM symbol, downlink data transmission can start from the 3rd OFDM symbol; If control channel ends at the 2nd OFDM symbol, downlink data transmission can start from the 2nd OFDM symbol, and the like.

In wireless communication system, according to the number of the uplink and downlink subscriber equipment of dispatching moment base station assigns at each and the factors such as channel condition of each subscriber equipment, the number of transport layer one/running time-frequency resource that layer two control signaling need can be determined in the base station.For the dispatching flexibility of base station maximum is provided, can utilize does not fully simultaneously currently have Be Controlled channel occupancy running time-frequency resource to come transmitting user data, and the base station need all send public control signaling at each Transmission Time Interval (TTI) and transmit configuration information to current control channel.These information can be the sums of the running time-frequency resource that takies of control channel, also can indicate the number of the control channel of each type, perhaps other forms of configuration information.According to the discussion among the current LTE, this configuration information is called type O (Category0) information, and be abbreviated as Cat-0 information.Because the Cat-0 informational needs sends to all subscriber equipmenies in the cell coverage area, is that the subscriber equipment that must guarantee all current scheduling can correctly receive Cat-0 information at least, Cat-0 generally speaking need be to send than higher power.In addition, the information of Cat-0 also can be transmitted by high-level signaling, for example transmission in broadcast channel (BCH), and at this moment Cat-0 remains unchanged in several TTI thereafter after sending, up to transmit again at BCH next time.Do not limit the as above send mode of Cat-0 information in this patent, and think the base station for each control signaling mapping physical running time-frequency resource the time, Cat-0 information is available.

In the discussion according to current LTE, a kind of mapping layer one/layer two control signaling to the method for physical layer running time-frequency resource are, the subcarrier that is used to control signaling in first OFDM symbol is at first filled with the control signaling in the base station; If the available subcarrier in first OFDM symbol transmits all control signalings inadequately, behind the available subcarrier of base station in filling up first OFDM symbol, begin to add the subcarrier that is used to control signaling that fills in second OFDM symbol; Equally, if the available subcarrier in preceding two OFDM symbols transmits all control signalings inadequately, behind the available subcarrier of base station in filling up preceding two OFDM symbols, begin to add and fill the 3rd subcarrier that is used to control signaling in the OFDM symbol.

There is following problem in this method.Be that most control signaling all is only to transmit in an OFDM symbol, consider the restriction of the maximum transmission power of base station, the control signaling is limited in the problem that an OFDM symbol might cause controlling signaling covering aspect.Said method lacks the detailed method that the control signaling is mapped to the physical layer running time-frequency resource in addition.

According among the current LTE to the discussion result of layer one/layer two (L1/L2) control channel, control channel is by combination one or more control channel unit (Control Channel Element, be called for short CE) obtain, and structurized method is adopted in the combination of CE here.Each CE comprises the running time-frequency resource of fixed qty, and the unit of running time-frequency resource is a subcarrier in the OFDM symbol here.All CE adopt the QPSK modulation.According to the discussion result among the current LTE, total number of the CE of the transmission current configuration in base station in the Cat-0 information, every k subframe of Cat-0 information sends once simultaneously, and k is more than or equal to 1 here, and the concrete numerical value of k is not also decided.By the total number of the CE in the Cat-0 information, can obtain the actual running time-frequency resource that takies of each CE.

In the discussion to the L1/L2 control channel in current LTE, when many transmit antennas of base station configuration, the method for two kinds of main candidate transmitting diversity is Cyclic Delay Diversity (CDD) and space frequency block coding (SFBC).The principle of CDD is the different cyclic shift that every antenna is launched identical signal, and the least unit of resource allocation here is a subcarrier.The principle of SFBC is on two subcarriers in two antennas and same OFDM symbol signal to be carried out combined coding and send, its smallest allocation unit is adjacent or two the very near subcarriers of being separated by on frequency domain, thus the characteristic of channel basically identical on these two subcarriers.The method of another transmit diversity is space time block encoding (STBC), its principle is on the same subcarrier of two antennas and different OFDM symbols signal to be carried out combined coding and transmission, and its smallest allocation unit is adjacent or two the very near subcarriers of being separated by on time domain.

Summary of the invention

The purpose of this invention is to provide a kind of equipment and method of sharing the control signaling of in wireless communication system, transmitting.

According to an aspect of of the present present invention, a kind of controlling the method that signaling is mapped to the physical layer running time-frequency resource, comprise the steps:

A) base station sends public control signaling to the user, information such as physical resource quantity that indication subsequent control signaling takies and position;

B) serial number is logically carried out to the physics running time-frequency resource that is used for control channel in the base station, successively logical resource is distributed to each control signaling then, the base station obtains the physics running time-frequency resource that each control signaling takies according to the mapping relations of logical resource and physics running time-frequency resource;

C) base station sends control signaling on the physics running time-frequency resource.

According to another aspect of the present invention, a kind of subscriber equipment receives the method for control signaling, comprises the steps:

A) subscriber equipment is determined layer total amount of the physics running time-frequency resource of one/layer two control signaling and concrete time-frequency position, adopts the method identical with the base station that each physics running time-frequency resource is logically carried out serial number then;

B) subscriber equipment is judged the running time-frequency resource that each control signaling takies, thereby carries out the reception to the control signaling.

According to another aspect of the present invention, a kind of equipment of base station processing controls signaling comprises transmission/reception, also comprises:

A) Scheduler module is used for giving each subscriber equipment according to channel quality indication (CQI) information (CQI) and business information etc. with physical source distributing;

B) control signaling maker module is used to generate the control information of each subscriber equipment;

C) physical channel multiplexer module is used for each control signaling is mapped to corresponding physics running time-frequency resource respectively.

According to another aspect of the present invention, a kind of equipment of subscriber equipment processing controls signaling comprises transmission/reception, also comprises:

A) physical channel demodulation multiplexer module is used for going out each control signaling at the physics running time-frequency resource demultiplexing of control channel;

B) control signal processor module is used for the control signaling decoding that demultiplexing is gone out and judges whether this control signaling sends to oneself.

According to another aspect of the present invention, a kind of method of base station transmits control channel comprises the steps:

A) base station sends total number of the control channel unit (CE) of current distribution;

B) serial number is logically carried out to the physics running time-frequency resource that is used for control channel in the base station;

C) base station is distributed to each CE to logical resource successively, thereby according to the mapping relations of logical resource and physics running time-frequency resource, obtains the physics running time-frequency resource that each CE takies;

D) the controlled channel of combination CE is passed through in the base station, and sends control signaling.

According to another aspect of the present invention, a kind of subscriber equipment receives the method for control channel, comprises the steps:

A) subscriber equipment receives total number of the control channel unit (CE) of current distribution;

B) subscriber equipment logically carries out serial number to the physics running time-frequency resource that is used for control channel;

C) subscriber equipment makes up the resource pattern of CE on logical resource, obtains the physics running time-frequency resource of CE then according to the mapping relations of logical resource and physics running time-frequency resource.

D) subscriber equipment passes through the controlled channel of combination CE, and detects the control signaling.

The invention provides the concrete grammar that the control signaling is mapped to the physical layer running time-frequency resource and transmits, solved the problem how the control signaling is transmitted, and realized the good covering of control signaling.

Description of drawings

Fig. 1 is the downlink frame structure of LTE system

Fig. 2 is the logic diagram of the running time-frequency resource that takies of control signaling

Fig. 3 is the schematic diagram of control signaling assignment profile formula physical resource

Fig. 4 is the logic diagram of three kinds of map types

Fig. 5 is first kind of logic diagram that distributes two kinds of MCS control of height signaling

Fig. 6 is second kind of logic diagram that distributes two kinds of MCS control of height signaling

Fig. 7 is the logic diagram of first OFDM symbol transmission low-power control signaling

Fig. 8 is the equipment of base station processing controls signaling

Fig. 9 is the equipment of subscriber equipment processing controls signaling

Figure 10 is the example of the method for first kind of base station assigns running time-frequency resource

Figure 11 is the example of frequency domain priority logic method for numbering serial

Figure 12 is the example one of the method for second kind of base station assigns running time-frequency resource

Figure 13 is the example of time domain priority logic method for numbering serial

Figure 14 is the example two of the method for second kind of base station assigns running time-frequency resource

Figure 15 is the example one of the method for the third base station assigns running time-frequency resource

Figure 16 is the example one to two parts physics running time-frequency resource logical number

Figure 17 is the example two of the method for the third base station assigns running time-frequency resource

Figure 18 is the example two to two parts physics running time-frequency resource logical number

Figure 19 is the base station transmitter hardware block diagram

Figure 20 is a subscriber equipment receiver hardware block diagram

Figure 21 is the example one by the time domain priority logic numbering of two subcarrier groupings

Figure 22 is the example two by the time domain priority logic numbering of two subcarrier groupings

Figure 23 is the example three by the time domain priority logic numbering of two subcarrier groupings

Figure 24 is the example four by the time domain priority logic numbering of two subcarrier groupings

Embodiment

The present invention relates to share the method that the control signaling is mapped to the physical layer running time-frequency resource.Here share the control signaling and be meant layer one/layer two control signaling, the present invention is mainly used in the transmission of scheduling control signaling of downlink and ascending scheduling control signaling.Here do not limit scheduling control signaling of downlink and ascending scheduling control signaling and can only send to a specific subscriber equipment.In fact, according among the current LTE to the discussion of Paging Control Channel and accidental access response channel, these two kinds of demands can be controlled the structure of signalings by multiplexing existing layer one/layer two, and scheduling control signaling of downlink and ascending scheduling control signaling can send to a plurality of subscriber equipmenies simultaneously like this.If system is the control channel of Paging Control Channel and the special use of accidental access response channel configuration in addition, method of the present invention can expand to these new control channels.

The base station is given each subscriber equipment resource block assignments based on the channel quality indication (CQI) of subscriber equipment and the information such as data traffic information of subscriber equipment.The data traffic information of subscriber equipment is meant the data volume and the corresponding quality of service requirement of each subscriber equipment.Then the base station according to current be the resource allocation conditions of each subscriber equipment, generate the control corresponding signaling, select each MCS value that adopts at specific user's control signaling of transmission, thereby determine each control signaling need the number of physical layer running time-frequency resource.Like this, the base station is used in the physics running time-frequency resource of control channel according to the sum branch of the physical layer running time-frequency resource of all control signaling needs.Discussion result according to current LTE, layer one/layer two control signaling are transmitted in the individual OFDM symbol of the preceding n (n is smaller or equal to 3) of each TTI, be the number of base station, be used in the resource of control signaling from first OFDM sign-on branch according to the running time-frequency resource of control signaling needs.When the not enough control channel of available resources in first OFDM symbol, the base station is Resources allocation in second OFDM symbol.During the not enough control channel of the running time-frequency resource in current two OFDM symbols, the base station is Resources allocation in the 3rd OFDM symbol.

Subscriber equipment is to the reception of layer one/layer two control signaling for convenience, and the base station need send Cat-0 information.The present invention does not limit the send mode of Cat-0.Cat-0 information can constantly all send in each scheduling, thereby for the dispatching flexibility of base station maximum is provided, and utilize fully and currently do not have Be Controlled channel occupancy running time-frequency resource to come transmitting user data.Cat-0 information also can be by the semi-static configuration of channels such as BCH, promptly send Cat-0 information at every turn after, thereafter if remain unchanged in each and every one TTI.Even the base station can not send Cat-0 information, this means that subscriber equipment need carry out more blind Detecting.The present invention does not limit the particular content of Cat-0.Cat-0 information can only indicate the number of the OFDM symbol that is used to control signaling; Cat-0 can only indicate the position and the number of layer one/physics running time-frequency resource that layer two control signaling take; Cat-0 also can not only indicate the position and the number of the physics running time-frequency resource that takies of control signaling, and the number of the detailed control signaling that indicates each type etc.

Fig. 2 is the logic diagram of a kind of layer one/running time-frequency resource that layer two control channel take, and does not influence generality, suppose that here control channel need take n=3 OFDM symbol, and a part of subcarrier of n OFDM symbol is used for control channel.Notice that Fig. 2 is a building-block of logic, promptly in same OFDM symbol, different functional domains only is illustrated in this OFDM symbol will transmit this information, but do not limit the send mode of these information in physical layer, in fact when physical layer transmission, these information can be mapped to continuous sub-carriers, promptly local formula transmission; In also can equally distributed whole OFDM symbol, i.e. distributed transmission; Can also unite the transmission of adopting distributed transmission and local formula, for example, the resource that is used for controlling signaling in an OFDM symbol can be distributed to several positions of system bandwidth, and on each position the subcarrier of continuous dispensing some.According to the characteristic of ofdm system, adopt distributed transmission to help utilizing frequency diversity gain, thereby improve the performance of message transmission.

As shown in Figure 2, except the control signaling, preceding n OFDM symbol can also transmit some other information.For example, discussion according to current LTE, first OFDM symbol transmission public reference signal, depend on the later discussion of LTE simultaneously, first OFDM symbol may need to transmit the information of Cat-0, first OFDM symbol can also send at the ACK/NACK information of ascending HARQ transfer of data etc. in addition, and like this, first OFDM symbol only some subcarrier can be used for control channel.Equally, the base station can utilize a part of subcarrier control channel in n (n equals 3 among Fig. 2) OFDM symbol, utilizes other subcarrier transmitting user data signals.If note need not transmitting in the system other information in first OFDM symbol, so whole first OFDM symbol can be used for transport layer one/layer two control signaling.In addition, do not limit the 2nd～n-1 OFDM symbol (for example second OFDM symbol among Fig. 2) here and must be exclusively used in layer one/layer two control signaling.

Do not influence generality, below hypothesis is used for number n=3 of the OFDM symbol of control channel.Because distributed transmission helps utilizing frequency diversity gain, when control signaling and other signal multiplexings were in same OFDM symbol, Fig. 3 was that the mode Distribution Layer one/layer two that adopts distributed transmission is controlled the schematic diagram of the physical resource of signalings.As shown in Figure 3, the subcarrier that is used for control channel in first OFDM symbol is distributed to whole bandwidth; Second OFDM symbol all is used for control channel; Equally, the subcarrier that is used for control channel in the 3rd OFDM symbol is distributed to whole bandwidth.

In each OFDM symbol, these physics running time-frequency resources that are used for control channel can be continuous sub-carriers, also can be discontinuous subcarriers.The present invention logically is numbered the running time-frequency resource that each is used to control signaling.Thereby the base station can be finished on the aspect in this logic when distribution sends to the running time-frequency resource that the control channel of each subscriber equipment takies, and is mapped to actual physics layer running time-frequency resource then.The method of two kinds of logical numbers of the present invention is described below.

The method of first kind of logical number is the frequency domain mode of priority, and the subcarrier that signaling is earlier controlled to being used in first OFDM symbol in the base station is numbered, and the subcarrier that being used in second OFDM symbol controlled signaling is numbered then, and the rest may be inferred.Be without loss of generality, suppose that the control signaling takies n=3 OFDM symbol.As shown in figure 11, note be used to control signaling running time-frequency resource add up to N, suppose to have in first OFDM symbol N1 subcarrier to be used to control signaling, so its numbering is 1,2,3 ... N1; Suppose to have in second OFDM symbol N2 subcarrier to be used to control signaling, its numbering is N1+1, N1+2 ... N1+N2; Supposing has in the 3rd the OFDM symbol Individual subcarrier is used to control signaling, so its numbering is N1+N2+1, and N1+N2+2 ... N.Like this, the logical number of the physics running time-frequency resource of control signaling that is useful on is 1,2,3 ... N.

The method of second kind of logical number is the time domain mode of priority, and whether first subcarrier of n OFDM symbol was used to control signaling before the base station was at first judged, and to being used to control the running time-frequency resource numbering of signaling; Whether second subcarrier of n OFDM symbol was used to control signaling before the base station was judged respectively then, and to being used to control the running time-frequency resource numbering of signaling; The rest may be inferred.Suppose to have first subcarrier of n1 OFDM symbol to be used to control signaling, then its logical number is 1,2 ... n1; Suppose to have second subcarrier of n2 OFDM symbol to be used to control signaling, then its logical number is n1+1, n1+2 ... n1+n2; Suppose to have the 3rd subcarrier of n3 OFDM symbol to be used to control signaling, then its logical number is n1+n2+1, n1+n2+2 ... n1+n2+n3, the rest may be inferred.Note be used to control signaling the physics running time-frequency resource add up to N, the logical number of these physics running time-frequency resources is 1,2,3 ... N.Figure 13 is an example of the method for time domain priority logic numbering.As shown in figure 13, to first subcarrier, 3 OFDM symbols all are used for control channel, so the logical number of these 3 running time-frequency resources is successively the time 1,2 and 3; To second subcarrier, have only second OFDM symbol to be used for control channel, the logical number of this running time-frequency resource is 4; To the 3rd subcarrier, second and the 3rd OFDM symbol are used for control channel, and the logical number of these two running time-frequency resources is 5 and 6 successively, and the rest may be inferred.

The method of aforesaid two kinds of logical numbers is with the granularity of a sub-carrier resources physics running time-frequency resource that is used for control channel to be carried out logical number, so be directly applied for transmit diversity techniques such as CDD.In order to support emission diversity method such as SFBC, require to distribute two subcarriers to give a CE at every turn.The method of above-mentioned two kinds of logical numbers can be generalized to simply with the granularity of a plurality of (more than or equal to 2) sub-carrier resources carries out logical number to the physics running time-frequency resource that is used for control channel, and at this moment each logical number is mapped as a plurality of physical sub-carriers.Do not influence generality, hypothesis is that granularity is carried out logical number with two sub-carrier resources in describing below.

The method preferential to top frequency domain, at first the subcarrier that is used for control channel in first OFDM symbol is carried out logical number, successively two nearest sub carrier group of being separated by are incorporated into together and distribute a logical number, two subcarriers that distribute same logical number here may be two adjacent physically subcarriers; Distribute between two subcarriers of same logical number and also may comprise the subcarrier that several are used for other functions (public guide frequency, Cat-0 information etc.).Remember that the logical number in first OFDM symbol is 1,2,3 ... M1; Then, adopt the similar method when handling first OFDM symbol, the subcarrier that is used for control channel in the 2nd～n the OFDM symbol is carried out logical number, second interior logical number of OFDM symbol is M1+1, M1+2 ... M1+M2, the 3rd the interior logical number of OFDM symbol is M1+M2+1, M1+M2+2 ... M.Like this, the logical number of the physics running time-frequency resource of control signaling that is useful on is 1,2,3 ... M.Here M is total number of logical resource, and 2M is the sum that is used for the physics running time-frequency resource of control channel.

The method preferential to top time domain at first to the subcarrier that is used for control channel of preceding n OFDM symbol, is incorporated into two nearest sub carrier group of being separated by together successively.Here two subcarriers in same group may be two adjacent physically subcarriers; Also may comprise the subcarrier that several are used for other functions betwixt.Here a kind of method is that above-mentioned grouping is confined to carry out respectively in each OFDM symbol, and promptly every group two sub-carrier resources all are to belong to same OFDM symbol; Another kind method is to divide into groups according to sub-carrier resources nearest at interval principle on time and frequency fully, and every group two sub-carrier resources can belong to same OFDM symbol like this, also can belong to different OFDM symbols.Then, according to the time-frequency position at first subcarrier place in each group each group subcarrier is carried out logical number.Specifically, each group # at first to beginning with first subcarrier in preceding n the OFDM symbol; Each group # to beginning with second subcarrier in preceding n the OFDM symbol then; The rest may be inferred.Supposing has n1 with the group that first subcarrier begins, and then its logical number is 1,2 ... n1; Supposing has n2 with the group that second subcarrier begins, and then its logical number is n1+1, n1+2 ... n1+n2; Supposing has n3 with the 3rd group that subcarrier begins, and then its logical number is n1+n2+1, n1+n2+2 ... n1+n2+n3, the rest may be inferred.Note be used for control channel the physics running time-frequency resource add up to N=N _CEM, the logical number of these physics running time-frequency resources is

Figure 21 is first example by the time domain priority logic method for numbering serial of the granularity grouping of two subcarriers.In this example, in the middle of every group of subcarrier in first OFDM symbol all at interval a subcarrier that is used for other purposes, and every group of subcarrier all is two continuous subcarriers in second and the 3rd OFDM symbol.In addition, when supporting the transmit diversity techniques of SFBC, in some cases, at the two ends of frequency band independent subcarrier is arranged, in the example as shown in figure 22, to first OFDM symbol, except two subcarriers (2201 and 2202) at frequency band two ends, other subcarriers all are continuous paired appearance.At this moment minimum in order to guarantee the distance between two subcarriers in every group, thereby optimize the performance of SFBC, the subcarrier at the frequency band two ends of first OFDM symbol (2201 and 2202) is not used in transmitting control channel, thereby three interior every group of subcarriers of OFDM symbol all are two continuous subcarriers.

When base station configuration during four transmit antennas, for example according to the discussion result among the current LTE, preceding two OFDM symbols transmit the pilot signal of two antennas respectively.In the example as shown in figure 23, to first OFDM symbol, except two subcarriers (2301 and 2302) at frequency band two ends, other subcarriers all are continuous paired appearance; To second OFDM symbol, except two subcarriers (2303 and 2304) at frequency band two ends, other subcarriers all are continuous paired appearance.At this moment minimum in order to guarantee the distance between two subcarriers in every group, thereby when mixing use SFBC and other transmit diversity techniques, can optimize the performance of transmit diversity, subcarrier (2301～2304) is not used in transmitting control channel, thereby three interior every group of subcarriers of OFDM symbol all are two continuous subcarriers.In example as shown in figure 24, identical with Figure 23, other subcarriers except subcarrier (2401～2404) all are continuous paired appearance.Simultaneously, sub-carrier resources (2401 and 2403) or (2402 and 2404) are though discontinuous on frequency domain, but they are adjacent on time domain, so can do special processing to subcarrier (2401～2404), promptly mix the emission diversity method that uses SFBC and STBC, the method of STBC is adopted in subcarrier (2401 and 2403) and (2402 and 2404), and other subcarriers adopt the method for SFBC.Here problem of Chan Shuing and solution, suitable equally to the situation of the transmitting antenna of other numbers of base station configuration.

Among the present invention, the base station is to control being used in preceding n the OFDM symbol after the physics running time-frequency resource numbering of signaling, the base station is controlled signaling to the logic time-frequency resource allocating to each according to logical number, thereby, obtain the physical control channel that each control signaling takies according to the mapping relations of logical number and physics running time-frequency resource.Method according to five kinds of preferred assignment logic running time-frequency resources of the present invention is described below.

The method of first kind of assignment logic resource:

The base station is to the unified numbering of physics running time-frequency resource of being useful on control channel, remember the K that adds up to of the current control channel that need send, the base station is that 1 logical resource begins to distribute successively each logical resource from logical number, logical resource of each distribution is given a control channel, distributes next logical resource to give next control channel then; After logical resource of base station assigns is given K control channel, distribute next logical resource to give first control channel, so circulation.Because the number of the running time-frequency resource that each control channel needs is different, according to the method described above, some few control channels of running time-frequency resource that need will at first be assigned to enough running time-frequency resources.Supposing has k control channel to distribute enough running time-frequency resources after certain circulation, and in next one circulation, the base station only is other a K '=K-k control channel Resources allocation.Similarly, supposing has the individual control channel of k ' to distribute enough running time-frequency resources again after certain circulation, and in next one circulation, the base station only is remaining K "=K '-the individual control channel Resources allocation of k '.The rest may be inferred, up to the resource allocation of all K control channel is finished.

The method of second kind of assignment logic resource:

The base station is to the unified numbering of the physics running time-frequency resource of being useful on control channel, remember that current to need the number of the control channel that sends be K, and the base station is that 1 logical resource begins to distribute successively each logical resource from logical number.Because the number of the running time-frequency resource of dissimilar control channels needs generally is unequal, in each distributed circulation, the base station was according to the pro rate logical resource of the number of resources of each dissimilar control channels needs.For example, the base station is distributed three types control channel simultaneously, and the ratio of its number of resources that needs is

In each distributed circulation, base station assigns m logical resource given first type control channel like this, distributed n running time-frequency resource to give second type control channel, distributed p logical resource to give the control channel of the third type simultaneously.Notice that the base station is that m of distributing of every class control channel, n and p logical resource can weave ins, thereby have better frequency diversity effect.So circulation is up to the resource allocation of all K control channel is finished.

The method of the third assignment logic resource:

In the control signaling transmission course of reality, the power that can be used in each OFDM symbol that is used to send control signaling controlled the signaling transmission generally is unequal.For example, discussion result according to current LTE, comprise down public guide frequency in first OFDM symbol, simultaneously be used to control the number of running time-frequency resource of signaling and the assignment information of control signaling for dynamic indication, the information that needs to send Cat-0 in first OFDM symbol, these information all need send with bigger power.Like this, the power that can be used for control channel in first OFDM symbol is restricted.Do not influence generality, below be limited as example with the available horsepower of first OFDM symbol and describe method of the present invention.

In communication system during control channel, for example in the LTE system, according to current result of study,, adopt the MCS of two or more (comprising two kinds) to help improving interference between all adjacent sub-district of physical layer resources utilance peace to the control signaling of each specific function.The kind number of the MCS that disposes in the note system is k, and k is more than or equal to 2.Here the control signaling of high MCS is used for channel condition subscriber equipment preferably; The control signaling of low MCS is used for the relatively poor subscriber equipment of channel condition.Correspondingly, from transmitting power, the transmitted power of the control channel of general high MCS is lower, and the transmitted power of the control channel of low MCS is higher.Equally, the power spectral density of each subcarrier has and the similar character of transmitted power, and promptly the power spectral density of the control channel of general high MCS is lower, and the power spectral density of the control channel of low MCS is higher.

In this method of the present invention, the base station preferentially is mapped to the control channel of high MCS in the OFDM symbol of power limited, and for example, according to the discussion result of current LTE, the control channel of high MCS preferentially is mapped to first OFDM symbol; Preferentially the control channel of low MCS is mapped in the not limited OFDM symbol of other power.Note when the kind number k of the MCS of system configuration greater than 2 the time, the preferential control channel high MCS that the present invention proposes is mapped to the OFDM symbol of power limited, and be not equal to the OFDM symbol that the control signaling of the highest MCS can only be mapped to power limited, when the control signaling of the highest MCS can not all utilize the OFDM symbol of power limited be used to control the physics running time-frequency resource of signaling the time, the base station preferentially is mapped to remaining physics running time-frequency resource to the control channel of inferior high MCS, and the rest may be inferred.

According to the principle of this control channel mapping, as shown in Figure 4, the base station is divided into three types at most to the mapping situation of control signaling, and first kind of map type is the control signaling of only transmitting in the OFDM of power limited symbol; Second kind of map type is the control signaling of transmitting in the OFDM of power limited symbol and other OFDM symbols simultaneously; The third map type is the control signaling of only transmitting in the not limited OFDM symbol of power.Notice that the present invention does not limit the running time-frequency resource that second kind of map type takies at other OFDM symbols, promptly can be as shown in Figure 4 only take running time-frequency resource in other OFDM symbols of a part, also can take the running time-frequency resource in the every other OFDM symbol.When each base station sends control signaling,, may occur above-mentioned three kinds of map types simultaneously, two types or a type in above-mentioned three kinds of map types also can only occur according to the kind number of the MCS of system configuration and current scheduling of resource situation.

According to three types of above-mentioned base station maps control signaling, the base station maps control channel can have three kinds of modes.First kind of processing mode is that the base station is distributed running time-frequency resource to the control signaling of identical MCS according to identical map type, and the approximately equalised control signaling of MCS can be thought the control signaling of identical MCS here.In this manner, the control signaling of a kind of MCS being arranged at most is second kind of map type.Second kind of processing mode is that the base station is to distributing running time-frequency resource with the control signaling of the same type of MCS division according to identical map type according to function.In this manner, one type control signaling being arranged at most is second kind of map type.The third processing mode is that the base station is to distributing running time-frequency resource according to different map types according to the control signaling of the function and the same type of MCS division.

If the control signaling of transmitting in first OFDM symbol that obtains according to the method still is subject to power and can not transmits, the base station can be some the subcarrier free time in first OFDM symbol; Perhaps the control channel of one or more high MCS can polygamy be put in the base station, but in fact these channels that have more do not transmit any information, i.e. these subcarrier free time.

Do not influence generality, flow process of the present invention when having above-mentioned three kinds of map types simultaneously is described below, the map type of noting control signaling among certain TTI can be thought the special case of this flow process less than 3 kinds situation.The number of remembering the current control signaling that need to send is K, the running time-frequency resource that needs add up to N.Wherein the number of the control signaling of map type 1 is K1, and the number of the running time-frequency resource that needs is N _K1The number of the control signaling of map type 2 is K2, and the number of the running time-frequency resource that needs is N _K2, the number of the control signaling of map type 3 is K3, the number of the running time-frequency resource that needs is N _K3Like this, the method for base station maps control signaling is: the N in first OFDM symbol _K1Individual resource is used to transmit the control signaling of K1 map type 1; N1-N in first OFDM symbol _K1N in individual resource and other OFDM symbols _K1+ N _K2-N1 resource is used to transmit the control signaling of K2 map type 2; Remaining N-N in other OFDM symbols _K1-N _K2Individual resource is used to transmit the control signaling of K3 map type 3.The control signaling that three kinds of map types of the present invention are described below is mapped to two kinds of concrete grammars of physical layer running time-frequency resource.

The method that first kind of control signaling three kinds of map types is mapped to the physics running time-frequency resource is that the base station is identified for the physics running time-frequency resource of the control signaling of these three kinds of map types respectively.The base station guarantees that the physics running time-frequency resource of the control signaling of every kind of map type is distributed in the whole bandwidth as far as possible, thereby has best frequency diversity effect.Specifically, the N in first OFDM symbol _K1Individual resource is used for the control signaling of map type 1, the N here _K1Individual running time-frequency resource is distributed in the whole bandwidth; Other N1-N that are used to control signaling in first OFDM symbol _K1Individual physics running time-frequency resource and the 2nd～n the N that is used to control signaling that the OFDM symbol is interior _K1+ N _K2-N1 physics running time-frequency resource is used for the control signaling of map type 2, the N here _K1+ N _K2-N1 running time-frequency resource is distributed in the whole bandwidth; The 2nd～n other N-N that the OFDM symbol is interior _K1-N _K2Individual physics running time-frequency resource is used for the control signaling of map type 3.

Adopt this method, logical number is carried out to the physics running time-frequency resource of the control signaling of transmitting three kinds of map types respectively in the base station, the method of its logical number can be the preferential method of above-described frequency domain, it also can be the preferential method of time domain, perhaps additive method, the present invention does not limit the method for concrete logical number.The base station is respectively the control signaling assignment logic resource of three kinds of map types independently then.The method of above-mentioned first kind or second kind assignment logic resource can be adopted in the base station when distributing the control signaling of each map type.

The method that second kind of control signaling three kinds of map types is mapped to the physics running time-frequency resource is, the base station is to the unified numbering of physics running time-frequency resource of be useful on control signaling, promptly to being used for the physics running time-frequency resource of control channel, the method of its logical number can be the preferential method of above-described frequency domain, perhaps its certain version, the present invention does not limit the method for concrete logical number.The base station is the control signaling assignment logic resource of three kinds of map types then, and dual mode can be arranged:

First kind of method of salary distribution: three step assignment logic resources are divided in the base station.The base station at first since the 1st logical resource N _K1Individual logical resource is distributed to the control signaling of K1 map type 1; The base station is from N then _K1+ 1 logical resource begins N _K2Individual logical resource is distributed to the control signaling of K2 map type 2; Last base station is from N _K1+ N _K2+ 1 logical resource begins N _K3Individual logical resource is distributed to the control signaling of K3 map type 3.The method of above-mentioned first kind or second kind assignment logic resource can be adopted in the base station when distributing the control signaling of each map type.

Second kind of method of salary distribution: the base station is the logical number of corresponding first OFDM symbol that the logical resource of 1～N1 is distributed to the control signaling of map type 1 and the control signaling of map type 2, total N1-N here at first _K1Individual time-frequency resource allocating is given the control signaling of map type 2; The base station is logical number that the logical resource of N1+1～N is distributed to the control signaling of map type 2 and the control signaling of map type 3 then, total here N _K1+ N _K2-N1 time-frequency resource allocating given the control signaling of map type 2.In above-mentioned time-frequency resource allocating, the method for above-mentioned first kind or second kind assignment logic resource can be adopted in the base station.When the method for above-mentioned first kind of assignment logic resource is adopted in the base station, be example with first OFDM symbol, count the resource of the control signaling of distributing to map type 2 base station, when reaching N1-N _K1The time, stopping in first OFDM symbol is the Resources allocation of the control signaling of map type 2, the base station continues as the control signaling Resources allocation of map type 1.When the method for above-mentioned second kind of assignment logic resource is adopted in the base station, be example with first OFDM symbol, the running time-frequency resource sum N1-N that in first OFDM symbol, takies according to the control signaling of map type 2 of base station at first _K1The control signaling of calculating each map type 2 needs the number of the resource of distributing in first OFDM symbol, the base station is calculated the ratio that each distributes the resource that each control signaling is distributed in the circulation with the individual numerical value of this calculating with the control signaling of map type 1 then, and then finishes in first OFDM symbol the distribution to the physics running time-frequency resource of control signaling.

As a specific embodiment of the present invention, describe below that the base station is the method for control signaling mapping physical running time-frequency resource when the kind number of the MCS of system configuration is 2.The number of remembering the current control signaling that need send is K, and wherein the number of the control signaling of high MCS is K1, and the number of the running time-frequency resource that needs is N _K1, the number of the control signaling of low MCS is K2, the number of the running time-frequency resource that needs is N _K2As shown in Figure 5, as N1＜N _K1The time, N1 resource in first OFDM symbol and the N in other OFDM symbols _K1-N1 resource is used to transmit the control signaling of K1 high MCS; Correspondingly, the remaining N-N in other OFDM symbols _K1Individual resource is used to transmit the control signaling of K2 low MCS.Notice that the present invention does not limit this N _K1-N1 resource distribution in some or all of other OFDM symbols, both can be as shown in Figure 5 only be distributed to a part other OFDM symbols, also can be distributed in the every other OFDM symbol.As shown in Figure 6, as N1＞N _K1The time, the control signaling of K1 high MCS can all be transmitted in first OFDM symbol; Correspondingly, remaining N1-N in first OFDM symbol _K1Resource in individual resource and other OFDM symbols is used to transmit the control signaling of K2 low MCS.Two kinds of concrete grammars that the control signaling of high and low two kinds of MCS are mapped to the physical layer running time-frequency resource of the present invention are described below.

The method that first kind of control signaling high and low two kinds of MCS is mapped to the physics running time-frequency resource is that the base station is identified for the physics running time-frequency resource of high MCS control signaling and low MCS control signaling respectively.The base station guarantees that the physics running time-frequency resource of every kind of MCS control signaling is distributed in the whole bandwidth as far as possible, thereby has best frequency diversity effect.Specifically, as N1＜N _K1The time, the available running time-frequency resource in first OFDM symbol is all distributed to the control signaling of high MCS, and its time-frequency number of resources is N1; The 2nd～n the N that the OFDM symbol is interior _K1-N1 running time-frequency resource is used to transmit the control signaling of K1 high MCS, the N here _K1-N1 running time-frequency resource is distributed in the whole bandwidth; The physics running time-frequency resource that in the 2nd～n OFDM symbol other are used to control signaling is used for the control signaling of low MCS.As N1＞N _K1The time, the N in N1 the physics running time-frequency resource in first OFDM symbol _K1Individual resource is used for the control signaling of high MCS, the N here _K1Individual running time-frequency resource is distributed in the whole bandwidth; In first OFDM symbol other are used to control being used in the physics running time-frequency resource of signaling and the 2nd～n the OFDM symbol and control the control signaling that the physics running time-frequency resource of signaling is used for hanging down MCS.

Adopt this method, logical number is carried out to the physics running time-frequency resource of the control signaling of transmitting high and low two kinds of MCS respectively in the base station, the method of its logical number can be the preferential method of above-described frequency domain, it also can be the preferential method of time domain, perhaps additive method, the present invention does not limit the method for concrete logical number.The base station is the control signaling assignment logic resource of high and low two kinds of MCS respectively independently then.The method of above-mentioned first kind or second kind assignment logic resource can be adopted in the base station when distributing the control signaling of each MCS.

The method that second kind of control signaling high and low two kinds of MCS is mapped to the physics running time-frequency resource is, the base station is to the unified numbering of physics running time-frequency resource of be useful on control signaling, promptly to being used for the physics running time-frequency resource of control channel, the method of its logical number can be the preferential method of above-described frequency domain, perhaps its certain version, the present invention does not limit the method for concrete logical number.The base station is the control signaling assignment logic resource of high and low two kinds of MCS then, and dual mode can be arranged:

First kind of method of salary distribution: the base station is the assignment logic resource in two steps.The base station at first since the 1st logical resource N _K1Individual logical resource is distributed to the control signaling of K1 high MCS; Then from N _K1+ 1 logical resource begins N _K2Individual logical resource is distributed to the control signaling of the low MCS of K2.The method of above-mentioned first kind or second kind assignment logic resource can be adopted in the base station when distributing the control signaling of each MCS.

Second kind of method of salary distribution: as N1＜N _K1The time, the base station is the logical number of corresponding first OFDM symbol the control signaling that the logical resource of 1～N1 is distributed to high MCS at first; The base station is logical number that the logical resource of N1+1～N is distributed to the control signaling of the high MCS that does not obtain enough running time-frequency resources and the control signaling of low MCS then.As N1＞N _K1The time, the base station is the logical number of corresponding first OFDM symbol that the logical resource of 1～N1 is distributed to the control signaling of high MCS and the control signaling of low MCS, total N1-N here at first _K1Individual time-frequency resource allocating is given the control signaling of low MCS; The base station is logical number the control signaling that the logical resource of N1+1～N is distributed to the low MCS that does not obtain enough running time-frequency resources then.In above-mentioned time-frequency resource allocating, the method for above-mentioned first kind or second kind assignment logic resource can be adopted in the base station.

The method of the 4th kind of assignment logic resource:

Identical analysis based on the method for describing the third assignment logic resource the time, the power that can be used in each OFDM symbol that promptly is used to send control signaling controlled the signaling transmission generally is unequal.According to the discussion result in the current LTE system, the available horsepower of first OFDM symbol is limited.

The base station as shown in Figure 7, selects several control signalings to transmit in first OFDM symbol according to the number of the available subcarrier in first OFDM symbol and the power that can be used to send control signaling; Other control signalings are transmitted in the 2nd～n-1 OFDM symbol.If notice that the number of sub carrier wave that being used in first OFDM symbol control signaling is not just in time to carry an integer control channel, the base station can be after selecting several control channels, the remaining subcarrier free time; Perhaps the base station can utilize a part of running time-frequency resource and the interior running time-frequency resource of first OFDM symbol in the 2nd～n-1 the OFDM symbol to carry several control channels jointly, thereby makes full use of the running time-frequency resource that is used to control signaling in first OFDM symbol.Because the available horsepower in first OFDM symbol is limited, the power that several control signalings that the base station need guarantee to select need in first OFDM symbol is smaller or equal to the value of this available horsepower.The low control signaling of transmitted power of needs, perhaps the control signaling of base station selected high MCS can be selected in the base station.

When base station selected several control signalings are transmitted in first OFDM symbol, and the situation that does not exist the control signaling to cross over first OFDM symbol and other OFDM symbols, the method of above-mentioned first kind or second kind assignment logic resource can be adopted in the base station, and control signaling and the 2nd～n-1 the interior control signaling of OFDM symbol of being respectively in first OFDM symbol are distributed running time-frequency resource.

When base station selected several control signalings are transmitted in first OFDM symbol and on a part of running time-frequency resource in the 2nd～n-1 OFDM symbol, at this moment control signaling and be divided into two classes, the first kind be in first OFDM symbol and the 2nd～n-1 OFDM symbol in a part of running time-frequency resource on the control signaling transmitted; Second class is the control signaling of only transmitting on the running time-frequency resource in the 2nd～n-1 OFDM symbol.Like this, similar with the method for the control signaling of handling two kinds of MCS in the method for above-mentioned the third assignment logic resource, the base station can be mapped to the physical layer running time-frequency resource to this two classes control signaling.

The method of the 5th kind of assignment logic resource:

The base station determines that at first each is used to control the number of control signaling of distributing in the OFDM symbol of signaling and the subcarrier that takies thereof, and supposes to have distributed in certain OFDM symbol K control signaling, and the subcarrier number that they take is respectively N ₁, N ₂... N _K, N=N here ₁+ N ₂+ ...+N _KIt is the total number of sub-carriers that this OFDM symbol is used to control signaling.The length that the base station is formed the modulation symbol of these control signalings is that the sequence execution of N interweaves, be mapped to the physical layer running time-frequency resource then, thereby guarantee that the physics running time-frequency resource that each control signaling is distributed is evenly distributed in the whole bandwidth, has frequency diversity effect preferably.

In the present invention, if the base station sends Cat-0 information, and indicate the number of the control signaling of each type, according to the concrete method that the control signaling is mapped to the physical layer running time-frequency resource that adopts in base station, subscriber equipment can correspondingly be judged the running time-frequency resource that each control signaling takies, thereby carries out the reception to the control signaling.When the information of Cat-0 information transmission is fewer, subscriber equipment will need the blind Detecting offers additional possibilities.

Here suppose that subscriber equipment has obtained the information of Cat-0 by certain mode, when Cat-0 information when each TTI sends, subscriber equipment receives Cat-0 information at each TTI; When Cat-0 information during by semi-static configuration such as BCH, subscriber equipment receives channel such as BCH and obtains Cat-0 information, and be used for before the Cat-0 information updating if in the TTI to the reception of control signaling.According to the concrete method that the control signaling is mapped to the physical layer running time-frequency resource that adopts in base station, the operation of corresponding user equipment is described below.

First kind of method that receives the control signaling:

This method is the reception operation of subscriber equipment when the method for first kind of assignment logic resource of base station employing.Subscriber equipment judge current which physics running time-frequency resource and be used for control channel, thereby subscriber equipment can adopt the method identical with the base station, and these physics running time-frequency resources are carried out logical number according to Cat-0 information.Then, each of respective base station mapping control signaling distributed circulation, and subscriber equipment obtains belonging to a modulation symbol of its control signaling that will detect according to logical number.At last, subscriber equipment comprehensive all distribute the modulation symbol of this control signaling in the circulation, it is decoded and judges whether this control signaling sends to oneself.

Second kind of method that receives the control signaling:

This method is the reception operation of subscriber equipment when the method for second kind of assignment logic resource of base station employing.Subscriber equipment can judge current which physics running time-frequency resource and be used for control channel, thereby subscriber equipment can adopt the method identical with the base station, and these physics running time-frequency resources are carried out logical number according to Cat-0 information.Then, each of respective base station mapping control signaling distributed circulation, and subscriber equipment obtains belonging to the modulation symbol of its control signaling that will detect according to logical number.Here the processing of subscriber equipment and first kind of difference that receives the method for control signaling are, because the base station is according to the pro rate resource of the running time-frequency resource of the needs of each control signaling in each distributes circulation, the ratio value of the control channel that subscriber equipment correspondingly detects according to its needs distributes the modulation symbol that obtains respective number in the circulation at one.At last, subscriber equipment comprehensive all distribute the modulation symbol of this control signaling in the circulation, it is decoded and judges whether this control signaling sends to oneself.

The third receives the method for control signaling:

This method is the reception operation of subscriber equipment when the method for the third assignment logic resource of base station employing.Subscriber equipment can be judged current which physics running time-frequency resource and be used for control channel according to Cat-0 information.According to the MCS information of the indicated control signaling of Cat-0, subscriber equipment can be determined the map type of the control signaling of each type.

Be without loss of generality, when the control signaling that need detect when subscriber equipment adopted map type 1, subscriber equipment correspondingly received this control signaling in first OFDM symbol; When the control signaling that need detect when subscriber equipment adopted map type 2, subscriber equipment correspondingly received this and controls signaling in first OFDM symbol and the 2nd～n OFDM symbol; When the control signaling that need detect when subscriber equipment adopted map type 3, subscriber equipment correspondingly received this and controls signaling in the 2nd～n OFDM symbol.

A kind of method that subscriber equipment receives the control signaling is, adopts the identical method of method of physics running time-frequency resource of determining the control signaling of these three kinds of map types with the base station, and subscriber equipment is determined the physics running time-frequency resource that each map type takies.The subscriber equipment method that adopts the logical number identical with the base station is carried out logical number to the physics running time-frequency resource of the control signaling of transmitting three kinds of map types respectively then, thereby map type according to the control signaling that will detect, subscriber equipment is obtaining the modulation symbol of this control signaling on corresponding physical resource, then it is decoded and judge whether this control signaling sends to oneself.

Another method that subscriber equipment receives the control signaling is that subscriber equipment adopts the method identical with the base station, and the physics running time-frequency resource of be useful on control signaling is unified logical number.Remember the N that adds up to of running time-frequency resource that the current control signaling that need to send needs.Wherein the number of the running time-frequency resource of the needs of the control signaling of map type 1 is N _K1The number of the running time-frequency resource that the control signaling of map type 2 needs is N _K2, the number of the running time-frequency resource that the control signaling of map type 3 needs is N _K3At this moment subscriber equipment has two kinds of processing modes:

First kind of processing mode: subscriber equipment is at logical number 1～N _K1Physical resource in detect the control signaling of map type 1; Subscriber equipment is at logical number N _K1+ 1～N _K2Physical resource in detect the control signaling of map type 2; Subscriber equipment is in logical number

Physical resource in detect the control signaling of map type 3.

Second kind of processing mode: subscriber equipment detects the control signaling of map type 1 and the control signaling of map type 2, total N1-N here in the logical number of corresponding first OFDM symbol is the physical resource of 1～N1 _K1Individual running time-frequency resource carries the modulation symbol of the control signaling of map type 2; Subscriber equipment detects the control signaling of map type 2 and the control signaling of map type 3 in logical number is the physical resource of N1+1～N, total here N _K1+ N _K2-N1 running time-frequency resource carries the modulation symbol of the control signaling of map type 2.

Subscriber equipment is according to the map type of its control signaling that will detect, and obtaining the modulation symbol of this control signaling on corresponding physical resource, then it decoded and judges whether this control signaling sends to oneself.

The 4th kind of method that receives the control signaling:

This method is the reception operation of subscriber equipment when the method for the 4th kind of assignment logic resource of base station employing.Subscriber equipment is according to Cat-0 information, can judge current which physics running time-frequency resource and be used for control channel, and judge that according to Cat-0 information current which control signaling transmits in first OFDM symbol, correspondingly other control signalings are transmitted in the 2nd～n OFDM symbol.Like this, when the control signaling that subscriber equipment will detect is transmitted in first OFDM symbol, subscriber equipment in first OFDM symbol, obtain this control signaling modulation symbol, then it is decoded and judge this control signaling whether send oneself.When the control signaling that subscriber equipment will detect is transmitted in the 2nd～n OFDM symbol, subscriber equipment in the 2nd～n OFDM symbol, obtain this control signaling modulation symbol, then it is decoded and judge this control signaling whether send to oneself.

The 5th kind of method that receives the control signaling:

This method is the reception operation of subscriber equipment when the method for the 5th kind of assignment logic resource of base station employing.Subscriber equipment can be judged current which physics running time-frequency resource and be used for control channel according to Cat-0 information.Subscriber equipment adopts the method identical with the base station to obtain the subcarrier number that each control signaling takies in the OFDM symbol, the subcarrier that subscriber equipment is controlled signaling to being used in this OFDM symbol carries out deinterleaving, obtain then each control signaling modulation symbol, to its decode and judge this control signaling whether send to oneself.

Be the equipment drawing of base station processing controls signaling as shown in Figure 8, wherein physical channel multiplexer module (803) is embodiment of the present invention.The Scheduler module of base station (801) determines how to give each subscriber equipment with resource block assignments according to the channel quality indication (CQI) information (CQI) of subscriber equipment and the data traffic information of subscriber equipment; Then, the control signaling maker module (802) of base station generates the control information of each subscriber equipment, and is the suitable MCS of each subscriber equipment selection; Next, the physical channel multiplexer module (803) of base station is calculated the physics running time-frequency resource that is used for control channel, and according to method of the present invention each control signaling is mapped to corresponding physics running time-frequency resource respectively; At last, launch the signal after multiplexing the base station by emitter (804).

Be the equipment drawing of subscriber equipment processing controls signaling as shown in Figure 9, wherein physical channel demodulation multiplexer module (902) is embodiment of the present invention.Receiving system (901) receives the radiofrequency signal that the base station sends, and carries out radio frequency reception and analog-to-digital conversion etc. and handles back input physical channel demodulation multiplexer module (902); In physical channel demodulation multiplexer module (902), subscriber equipment goes out each control signaling according to method of the present invention at the physics running time-frequency resource demultiplexing that is used for control channel.Then, subscriber equipment is in control signal processor module (903), and the control signaling decoding that subscriber equipment goes out its demultiplexing also judges whether this control signaling sends to oneself.

The method of five kinds of preferred assignment logic running time-frequency resources has been described among the present invention in the above.According to the amount of information that Cat-0 information comprises, these methods are equally applicable to divide CE, and at this moment each CE is corresponding to a control channel in top five kinds of methods.At first logical number is carried out to the current running time-frequency resource that is used for control channel in the base station, and this can be the preferential method of numbering of frequency domain or the method for the preferential numbering of time domain, perhaps other the method for numbering serial of introducing above.Then, the division of CE is carried out in the base station on the basis of logical number.It should be noted that the granularity that adopts according to logical number, here in fact corresponding one or two physical sub-carrier resources of each logical resource.

When having limited each CE and comprised total number of the running time-frequency resource of fixed number and the CE that Cat-0 information is only transmitted the current configuration in base station, the method of above-mentioned first kind and second kind assignment logic running time-frequency resource can be used to divide CE, and these two kinds of method effects are the same.Total number of note current C E is N _CE, the number of the running time-frequency resource of each CE is M, the running time-frequency resource that promptly is used for control channel adds up to N _CEM.The base station is that 1 logical resource begins to be followed successively by each CE assignment logic resource from logical number, distributes a logical resource to give a CE at every turn, distributes next logical resource to give next CE then, and the rest may be inferred; When logical resource of base station assigns is given N _CEBehind the individual CE, distribute next logical resource to give first CE, so circulation.Like this after having passed through M circulation, all N _CEM physics time-frequency resource allocating given N _CEIndividual CE.

As the CE of the multiple different sizes of system configuration, and during the number of every kind of CE of the current configuration in Cat-0 message transmission base station, the method for above-mentioned second kind of assignment logic running time-frequency resource can be used to divide CE.The base station is that 1 logical resource begins to be followed successively by each CE assignment logic resource from logical number, in each distributes circulation, and the pro rate logical resource of the number of resources that the base station needs according to each dissimilar CE.So circulation is up to all logical resources are assigned.For example, the base station is distributed three kinds of CE simultaneously, and the ratio of its number of resources that needs is

In each distributed circulation, base station assigns m logical resource given first kind of CE like this, distributed n running time-frequency resource to give second kind of CE, distributed p logical resource to give the third CE simultaneously.Notice that the base station is that every kind of CE m, the n that distribute or p logical resource can weave ins, thereby have better frequency diversity effect.

After obtaining logical resource that each CE takies according to top method, according to logical resource number be used for the mapping relations of the physics running time-frequency resource of control channel, obtain the physics running time-frequency resource of each CE actual allocated.Then, the controlled channel of combination CE is passed through in the base station, and each control signaling is mapped to respectively on the control corresponding channel.It should be noted that the method that adopts above-mentioned time domain priority logic numbering and CE to divide, can guarantee that each CE obtains maximum frequency diversity effect.

The operation of subscriber equipment: according to the information of the number of the CE that comprises among the Cat-0, be M in conjunction with the number of the running time-frequency resource of each CE, the physics running time-frequency resource of controlled channel occupancy adds up to N _CEM, thus be identified for the physics running time-frequency resource of control channel.Be used for then the physics running time-frequency resource being carried out logical number according to the method identical with the base station, and on logical resource, make up the resource pattern of CE according to the method identical with the base station, obtain the physics running time-frequency resource of CE then according to the mapping relations of logical resource and physics running time-frequency resource.End user's equipment is by the controlled channel of combination CE, thereby whether base stations detected has sent the control signaling to it.

Embodiment

This part has provided three embodiment of this invention, and is too tediously long for fear of the description that makes this patent, in the following description, omitted the detailed description of function that the public is known or device etc.

First embodiment

The base station adopts the method for first kind of assignment logic resource of the present invention that the control signaling is mapped to the physical layer running time-frequency resource in the present embodiment.As shown in figure 10, hypothesis control signaling is transmitted in preceding 3 OFDM symbols here, and specifically, public guide frequency and other information are transmitted in system in first OFDM symbol, and remaining subcarrier is used for control channel; Second OFDM symbol all is used to control signaling simultaneously; The 3rd the interior a part of subcarrier of OFDM is used to control signaling, and other subcarriers are used for user data transmission.

In Figure 10, the subcarrier that is used to control signaling in first and the 3rd the OFDM symbol is expressed as continuous sub-carriers, and this is for the convenience of drawing, in the configuration of actual physics layer, these subcarriers are to be distributed in the whole bandwidth, thereby have frequency diversity effect preferably.

As shown in figure 10, suppose that here current base station will send 4 control signalings, and they belong to two kinds of different types, wherein first and second control signaling belong to a type, and the number of the physical layer running time-frequency resource that their need is fewer; Control signaling for the 3rd and the 4th and belong to the another one type, they need the number of physical layer running time-frequency resource many.

Present embodiment hypothesis base station is carried out logical number according to the preferential method of frequency domain to the physics running time-frequency resource, as shown in figure 11, the subcarrier number of supposing to be used in first OFDM symbol to control signaling is N1, so the logical number of first OFDM symbol subcarrier is 1～N1; Suppose preceding two OFDM symbols be used to control signaling subcarrier add up to N2, so the logical number of second OFDM symbol subcarrier is N1+1～N2; Suppose first three OFDM symbol be used to control signaling subcarrier add up to N, so the logical number of the 3rd OFDM symbol subcarrier is N2+1～N.

According to the method for logical number shown in Figure 11, Figure 10 is explicit to control the schematic diagram that signaling is mapped to the physics running time-frequency resource according to the method handle of first kind of assignment logic resource of the present invention.In Figure 10, the subcarrier of four control signalings distribution is directly used its sequence number 1,2,3 and 4 signs.As shown in figure 10, the base station is that 1 subcarrier begins Resources allocation from logical number, gives these four control signalings, so circulations a subcarrier allocation successively in a circulation.For the process of the such cycle assignment in clear sign base station, first subcarrier each circulation among Figure 10 is explicit with dark colour.Because 1st, the number of the physics running time-frequency resource of 2 two control signaling needs is few, so after certain distributes circulation, 1st, 2 two control signalings have obtained enough physics running time-frequency resources, and in the circulation, the base station is only given the 3rd, 4 two control signaling resource allocation so afterwards.

Figure 19 is an example of base station transmitter hardware block diagram.As shown in the figure, the scheduler of base station (1901) determines how to give each subscriber equipment with resource block assignments according to the channel quality indication (CQI) information (CQI) of subscriber equipment and the data traffic information of subscriber equipment; The base station generates the control signaling of each subscriber equipment at control signaling maker (1902) then; Next the physical channel multiplexer module (1903) of base station is calculated the physics running time-frequency resource that is used for control channel, and according to method of the present invention each control signaling is mapped to corresponding physics running time-frequency resource respectively, and is together multiplexing with other physical channels; Next, OFDM modulation (1904) is carried out to the signal after multiplexing in the base station, adds Cyclic Prefix (1905), and steering D/A conversion (1906) is at last by radio frequency sending set (1907) and antenna (1908) emission.

Figure 20 is an example of subscriber equipment receiver hardware block diagram.Receiving terminal receives from signal of base station by antenna (2001) and radio-frequency transmitter (2002), through mould/transformation of variables (2003), removes Cyclic Prefix (2004), carries out SCFDMA demodulation (2005); Next, in physical channel demodulation multiplexer module (2006), subscriber equipment goes out each control signaling according to method of the present invention at the physics running time-frequency resource demultiplexing that is used for control channel; Then, subscriber equipment is in control signal processor module (2007), and the control signaling decoding that subscriber equipment goes out its demultiplexing also judges whether this control signaling sends to oneself.

Second embodiment

The base station adopts the method for second kind of assignment logic resource of the present invention that the control signaling is mapped to the physical layer running time-frequency resource in the present embodiment.Identical with first embodiment, hypothesis control signaling is transmitted in preceding 3 OFDM symbols here.

Identical with Figure 10, among Figure 12 the subcarrier that is used to control signaling in first and the 3rd the OFDM symbol is expressed as continuous sub-carriers, this is for the convenience of drawing, in the configuration of actual physics layer, these subcarriers are to be distributed in the whole bandwidth, thereby have frequency diversity effect preferably.

The hypothesis current base station will send 4 control signalings in the present embodiment, and they belong to two kinds of different types, and wherein first and second control signaling belong to a type, and the number of the physical layer running time-frequency resource that they need is fewer; Control signaling for the 3rd and the 4th and belong to the another one type, they need the number of physical layer running time-frequency resource many.The present embodiment further subcarrier number of the 3rd and the 4th control signaling of hypothesis is first and second twice of controlling signaling.

According to the method for logical number shown in Figure 11, Figure 12 is explicit to control the schematic diagram that signaling is mapped to the physics running time-frequency resource according to the method handle of second kind of assignment logic resource of the present invention.The subcarrier of four control signalings distribution is directly used its sequence number 1,2,3 and 4 signs.Here the ratio of the number of the running time-frequency resource that needs of 4 control signalings is 1: 1: 2: 2, so in each circulation, the 1st, 2 two control signaling respectively distributed a subcarrier, the 3rd, 4 two control signaling respectively distributed two subcarriers simultaneously.The order of the interior base station assigns resource of each circulation of hypothesis is 3,1,4,3,2,4 among Figure 12.It is explicit with dark colour that each distributes first subcarrier of circulation among Figure 12.

Being the base station as Figure 13 carries out the schematic diagram of logical number according to the preferential method of time domain to the physics running time-frequency resource, and direct representation here goes out the subcarrier that being used in first and the 3rd the OFDM symbol control signaling and is distributed to whole bandwidth.As shown in figure 13, to first subcarrier, 3 OFDM symbols all are used for control channel, so the logical number of these 3 running time-frequency resources is successively the time 1,2 and 3; To second subcarrier, have only second OFDM symbol to be used for control channel, the logical number of this running time-frequency resource is 4; To the 3rd subcarrier, second and the 3rd OFDM symbol are used for control channel, and the logical number of these two running time-frequency resources is 5 and 6 successively, and the rest may be inferred.

According to the method for logical number shown in Figure 13, Figure 14 is explicit to control the schematic diagram that signaling is mapped to the physics running time-frequency resource according to the method handle of second kind of assignment logic resource of the present invention.Similar with Figure 12, the subcarrier of four control signalings distribution is directly used its sequence number 1,2,3 and 4 signs.Here the ratio of the number of the running time-frequency resource of 4 control signaling needs is 1: 1: 2: 2, and in each circulation, the order of base station assigns resource is 3,1,4,3,2,4.It is explicit with dark colour that each distributes first subcarrier of circulation among Figure 14.

The 3rd embodiment

The base station adopts the method for the third assignment logic resource of the present invention that the control signaling is mapped to the physical layer running time-frequency resource in the present embodiment.Identical with first embodiment, hypothesis control signaling is transmitted in preceding 3 OFDM symbols here.The control signaling of hypothesis base station assigns has two kinds of MCS of height in the present embodiment, thereby the base station preferentially is assigned to first OFDM symbol to the control signaling of high MCS, preferentially the control signaling of low MCS is assigned in second and the 3rd the OFDM symbol.

As shown in figure 15, suppose that the base station is current need to send 5 control signalings, wherein first, the MCS of second and the 3rd control signaling is than higher, and the physics running time-frequency resource number that they need equates; And the 4th and the 5th control signaling is lower, and the physics running time-frequency resource number that their need equates.The base station is respectively applied for the control signaling of two kinds of MCS of transmission height to the running time-frequency resource separated into two parts that is used to control signaling in first three OFDM symbol.As shown in figure 16, the running time-frequency resource of distributing to high MCS control signaling identifies with white colour, and the running time-frequency resource of distributing to the control signaling of low MCS identifies with Dark grey.Logical number is carried out to two parts running time-frequency resource respectively in the base station, and the base station is carried out logical number according to the preferential method of time domain to every part physics running time-frequency resource here.

According to the method for logical number to two parts physics running time-frequency resource shown in Figure 16, as shown in figure 15, the base station is the control signaling assignment logic resource of high and low two kinds of MCS respectively independently.The subcarrier of five control signalings distribution is directly used its sequence number 1,2,3,4 and 5 signs.To the control signaling of high MCS, three running time-frequency resources are distributed to the control signaling of 3 high MCS successively in the base station in each distributes circulation; To the control signaling of low MCS, two running time-frequency resources are distributed to the control signaling of 2 high MCS successively in the base station in each distributes circulation

Figure 17 is that the base station adopts the method for the third assignment logic resource of the present invention the control signaling to be mapped to another schematic diagram of physical layer running time-frequency resource.Supposing that the base station is current need to send 5 control signalings, and wherein the MCS of first and second control signaling is than higher, and the physics running time-frequency resource number that they need equates; And the 3rd, the 4th and the 5th control signaling is lower, and the physics running time-frequency resource number that their need equates.The base station is respectively applied for the control signaling of two kinds of MCS of transmission height to the running time-frequency resource separated into two parts that is used to control signaling in first three OFDM symbol.Identical with Figure 16, as shown in figure 18, the running time-frequency resource of distributing to high MCS control signaling identifies with white colour, and the running time-frequency resource of distributing to the control signaling of low MCS identifies with Dark grey.Logical number is carried out to two parts running time-frequency resource respectively in the base station, and the base station is carried out logical number according to the preferential method of time domain to every part physics running time-frequency resource here.

According to the method for logical number to two parts physics running time-frequency resource shown in Figure 180, as shown in figure 17, the base station is the control signaling assignment logic resource of high and low two kinds of MCS respectively independently.The subcarrier of five control signalings distribution is directly used its sequence number 1,2,3,4 and 5 signs.To the control signaling of high MCS, two running time-frequency resources are distributed to the control signaling of 2 high MCS successively in the base station in each distributes circulation; To the control signaling of low MCS, three running time-frequency resources are distributed to the control signaling of 3 high MCS successively in the base station in each distributes circulation.

Claims (37)

1. the method that the control signaling is mapped to the physical layer running time-frequency resource and transmits comprises the steps:

A) base station sends public control signaling to the user, information such as physical resource quantity that indication subsequent control signaling takies and position;

B) serial number is logically carried out to the physics running time-frequency resource that is used for control channel in the base station, successively logical resource is distributed to each control signaling then, the base station obtains the physics running time-frequency resource that each control signaling takies according to the mapping relations of logical resource and physics running time-frequency resource;

C) base station sends control signaling on the physics running time-frequency resource.

2. method according to claim 1 is characterized in that in step b), when control signaling and other signal multiplexings are in same OFDM symbol, control the subcarrier that signaling takies and is distributed in the whole system frequency band as far as possible.

3. method according to claim 1 is characterized in that in step b), and logical number adopts the frequency domain mode of priority.

4. method according to claim 1 is characterized in that in step b), and logical number adopts the time domain mode of priority.

5. method according to claim 1, it is characterized in that in step b), the base station is to the unified numbering of physics running time-frequency resource of be useful on control signaling, from logical number is that 1 logical resource begins to distribute successively each logical resource, logical resource of each distribution is given a control channel, distributes next logical resource to give next control channel then; After logical resource of base station assigns is given K control channel, distribute next logical resource to give first control channel, so circulation.

6. method according to claim 5, it is characterized in that, some few control channels of running time-frequency resource that need will at first be assigned to enough running time-frequency resources, after remembering certain circulation, there be k control signaling to distribute enough running time-frequency resources, in next one circulation, the base station only is other a K '=K-k control channel Resources allocation.Wherein K is the number of the control signaling that need distribute of current circulation.

7. method according to claim 1, it is characterized in that in step b), the base station is to the unified numbering of physics running time-frequency resource of be useful on control signaling, from logical number is that 1 logical resource begins to distribute successively each logical resource, in each distributed circulation, the base station was according to the pro rate logical resource of the number of resources of each dissimilar control signalings needs.

8. method according to claim 7 is characterized in that, the logical resource weave in that the base station is distributed for each control signaling in each circulation.

9. method according to claim 1 is characterized in that in step b), and the base station preferentially is mapped to the control channel of high MCS in the OFDM symbol of power limited; Preferentially the control channel of low MCS is mapped in the not limited OFDM symbol of other power.

10. method according to claim 9 is characterized in that, according to the discussion result of current LTE, the control channel of high MCS preferentially is mapped to first OFDM symbol;

11. method according to claim 9 is characterized in that, the base station is distributed running time-frequency resource to the control signaling of identical MCS according to identical map type, and the approximately equalised control signaling of MCS can be thought the control signaling of identical MCS here.

12. method according to claim 9 is characterized in that, the base station is to distributing running time-frequency resource with the control signaling of the same type of MCS division according to identical map type according to function.

13. method according to claim 9 is characterized in that, the base station is to distributing running time-frequency resource according to different map types according to the control signaling of the function and the same type of MCS division.

14. method according to claim 9 is characterized in that, the method for base station maps control signaling is: the N in first OFDM symbol _K1Individual resource is used for the control signaling of transmission map Class1; N1-N in first OFDM symbol _K1N in individual resource and other OFDM symbols _K1+ N _K2-N1 resource is used for the control signaling of transmission map type 2; Remaining N-N in other OFDM symbols _K1-N _K2Individual resource is used for the control signaling of transmission map type 3.Wherein, the running time-frequency resource that sends control signaling add up to N, the number of the running time-frequency resource of the control signaling of map type 1 is N _K1The number of the running time-frequency resource of the control signaling of map type 2 is N _K2, the number of the running time-frequency resource of the control signaling of map type 3 is N _K3

15. method according to claim 14, it is characterized in that, the base station is identified for the physics running time-frequency resource of the control signaling of these three kinds of map types respectively, carries out logical number respectively, is respectively the control signaling assignment logic resource of these three kinds of map types then independently.

16. method according to claim 15 is characterized in that, the physics running time-frequency resource of the control signaling of every kind of map type is distributed in the whole bandwidth as far as possible.

17. method according to claim 14 is characterized in that, the base station is to the unified numbering of physics running time-frequency resource of be useful on control signaling, since the 1st logical resource N _K1Individual logical resource is distributed to the control signaling of K1 map type 1; From N _K1+ 1 logical resource begins N _K2Individual logical resource is distributed to the control signaling of K2 map type 2; From N _K1+ N _K2+ 1 logical resource begins N _K3Individual logical resource is distributed to the control signaling of K3 map type 3.

18. method according to claim 14, it is characterized in that, the base station is to the unified numbering of physics running time-frequency resource of be useful on control signaling, is logical number that the logical resource of 1～N1 is distributed to the control signaling of map type 1 and the control signaling of map type 2, total N1-N here _K1Individual time-frequency resource allocating is given the control signaling of map type 2; Be logical number that the logical resource of N1+1～N is distributed to the control signaling of map type 2 and the control signaling of map type 3 then, total here N _K1+ N _K2-N1 time-frequency resource allocating given the control signaling of map type 2.

19. method according to claim 1, it is characterized in that in step b), the base station selects several control signalings to transmit in first OFDM symbol according to the number of the available subcarrier in first OFDM symbol and the power that can be used to send control signaling; Other control signalings are transmitted in the 2nd～n-1 OFDM symbol.

20. method according to claim 19 is characterized in that power that base station selected several control signalings the need value smaller or equal to this available horsepower in first OFDM symbol.

21. method according to claim 20 is characterized in that the low control signaling of transmitted power of base station selected needs.

22. method according to claim 20 is characterized in that the control signaling of base station selected high MCS.

23. method according to claim 1 is characterized in that in step b), distributes to the number of resources of each control signaling in each OFDM symbol of base station assigns, then it is interweaved, and then logical resource is mapped to the physical layer running time-frequency resource.

24. one kind receives the method for control signaling to subscriber equipment, comprises the steps:

A) subscriber equipment is determined layer total amount of the physics running time-frequency resource of one/layer two control signaling and concrete time-frequency position, adopts the method identical with the base station that each physics running time-frequency resource is logically carried out serial number then;

B) subscriber equipment is judged the running time-frequency resource that each control signaling takies, thereby carries out the reception to the control signaling.

25. method according to claim 24 is characterized in that in step b), each of respective base station mapping control signaling distributed circulation, and subscriber equipment obtains belonging to a modulation symbol of its control signaling that will detect according to logical number.

26. method according to claim 24, it is characterized in that in step b), each of respective base station mapping control signaling distributed circulation, and subscriber equipment obtains belonging to the modulation symbol of its control signaling that will detect according to the resource ratio value of the control signaling of its detection.

27. method according to claim 24 is characterized in that in step b), subscriber equipment receives the control signaling of map type 1 in first OFDM symbol; Subscriber equipment receives the control signaling of map type 2 in first OFDM symbol and the 2nd～n OFDM symbol; Subscriber equipment receives the control signaling of map type 3 in the 2nd～n OFDM symbol, n is the number that is used to control the OFDM symbol of signaling here.

28. method according to claim 24, it is characterized in that in step b), current which the control signaling of subscriber equipment judgement is transmitted in first OFDM symbol, and correspondingly other control signalings are transmitted in the 2nd～n OFDM symbol, and detect in corresponding OFDM symbol and control signaling.

29. method according to claim 24 is characterized in that in step b), the subcarrier that subscriber equipment is controlled signaling to being used in each OFDM symbol carries out deinterleaving, obtains the modulation symbol of each control signaling then.

30. the method for a transmitting control channel comprises the steps:

A) base station sends total number of the control channel unit (CE) of current distribution;

B) serial number is logically carried out to the physics running time-frequency resource that is used for control channel in the base station;

C) base station is distributed to each CE to logical resource successively, thereby according to the mapping relations of logical resource and physics running time-frequency resource, obtains the physics running time-frequency resource that each CE takies;

D) the controlled channel of combination CE is passed through in the base station, and sends control signaling.

31. method according to claim 30 is characterized in that in step b), logical number adopts the frequency domain mode of priority.

32. method according to claim 30 is characterized in that in step b), logical number adopts the time domain mode of priority.

33. method according to claim 30, it is characterized in that in step c) the base station is that 1 logical resource begins to be followed successively by each CE assignment logic resource from logical number, distributes a logical resource to give a CE at every turn, distribute next logical resource to give next CE then, the rest may be inferred; After logical resource of base station assigns is given last CE, distribute next logical resource to give first CE, so circulation.

34. method according to claim 30, it is characterized in that in step c), the base station is that 1 logical resource begins to be followed successively by each CE assignment logic resource from logical number, in each distributed circulation, the base station was according to the pro rate logical resource of the number of resources of each dissimilar CE needs.

35. a subscriber equipment receives the method for control channel, comprises the steps:

A) subscriber equipment receives total number of the control channel unit (CE) of current distribution;

B) subscriber equipment logically carries out serial number to the physics running time-frequency resource that is used for control channel;

C) subscriber equipment makes up the resource pattern of CE on logical resource, obtains the physics running time-frequency resource of CE then according to the mapping relations of logical resource and physics running time-frequency resource.

D) subscriber equipment passes through the controlled channel of combination CE, and detects the control signaling.

36. the equipment of a base station processing controls signaling comprises transmission/reception, also comprises:

A) Scheduler module is used for giving each subscriber equipment according to channel quality indication (CQI) information (CQI) and business information etc. with physical source distributing;

B) control signaling maker module is used to generate the control information of each subscriber equipment;

C) physical channel multiplexer module is used for each control signaling is mapped to corresponding physics running time-frequency resource respectively.

37. the equipment of a subscriber equipment processing controls signaling comprises transmission/reception, also comprises:

A) physical channel demodulation multiplexer module is used for going out each control signaling at the physics running time-frequency resource demultiplexing of control channel;

B) control signal processor module is used for the control signaling decoding that demultiplexing is gone out and judges whether this control signaling sends to oneself.

Images