CN101001138A - Equipment and method for transmitting downlink control signal - Google Patents
Equipment and method for transmitting downlink control signal Download PDFInfo
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- CN101001138A CN101001138A CN 200610006543 CN200610006543A CN101001138A CN 101001138 A CN101001138 A CN 101001138A CN 200610006543 CN200610006543 CN 200610006543 CN 200610006543 A CN200610006543 A CN 200610006543A CN 101001138 A CN101001138 A CN 101001138A
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Abstract
A method for sending downlink control signaling by base stations includes the following steps: a base station concentrates the position indication information of resources of a user device transmitted in distribution in an information block and transmits it in a public down control channel and transmits part of control information in the control signaling applying distributed transmission user devices excepting the resource position indication information and part of control information applying local transmission on other down control channels.
Description
Technical field
The present invention relates to a kind of equipment and method of transmitting downlink control signal, relate to the equipment and the method for dividing the timing transmitting downlink control signal simultaneously in particular when local formula transmission channel and distributed transmission channel.
Background technology
Now, 3GPP standardization body has set about beginning its existing system standard is carried out long-term evolution (LTE, Long Term Evolution).In the middle of numerous physical layer transmission technology, OFDM (OFDM, Orthogonal Frequency Division Multiplexing) technology is with its higher availability of frequency spectrum, and lower processing complexity becomes in all descending schemes more promising a kind of.
Be a kind of multi-carrier modulation communication technology on the OFDM technological essence, its basic principle is the data flow of a two-forty to be decomposed into several rate data streams transmit simultaneously on one group of mutually orthogonal subcarrier.The OFDM technology is because its multicarrier character has performance advantage aspect a lot.(1) significant advantage of OFDM technology is because data parallel transmission on a plurality of subcarriers respectively, and the length of the symbol on each subcarrier increases accordingly, and is insensitive to channel delay; Add protection on each symbol at interval by further giving, promptly introduce Cyclic Prefix (CP, Cyclic Prefix), under the situation of channel delay, can eliminate intersymbol interference (ISI) fully less than circulating prefix-length.Like this, each subcarrier has all experienced flat fading channel.(2) availability of frequency spectrum height of OFDM technology, ofdm signal are actual on frequency domain an overlapping, and this overlapping on improved the availability of frequency spectrum to a great extent.(3) ability of the anti-narrow band interference of OFDM technology and frequency selective fading is stronger.Can make OFDM have frequency diversity and time diversity effect by chnnel coding with interweaving, thereby resist narrow band interference and frequency selective fading effectively.(4) modulation of OFDM technology can realize by baseband I FFT conversion, and IFFT/FFT has ripe quick calculation method, can realize in dsp chip and hardware configuration easily.
According to existing discussion result about LTE, 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 radio frames is subdivided into a plurality of subframes (sub-frame) (104-107), and present hypothesis is that each radio frames comprises 20 subframes, and the time span of subframe is 0.5ms; Each subframe comprises a plurality of OFDM symbols again, 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 its CP 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 subframe is used for many Cell Broadcast CB/multicasts and the very large situation of radius of society.Short CP subframe (108) comprises 7 OFDM symbols, and long CP subframe (109) comprises 6 OFDM symbols.In the LTE system, the minimum transfer time interval, (TTI) just equaled the time span of subframe.
In ofdm system, the mode of two kinds of basic channel distribution is arranged.First kind is local formula transmission channel, promptly some adjacent subcarriers is divided into a channel as Resource Block, and this method helps utilizing multi-user diversity, thereby higher throughput of system is provided.Another kind is the distributed transmission channel, the resource of promptly distributing to some users be distributed to whole with certain rules or partial-band in, thereby the gain of frequency diversity is bigger.These two kinds of channel distribution modes respectively have superiority and replenish mutually, can be applied to simultaneously in the same subframe, thereby in a subframe some users be obtained multi-user diversity gain, and the user obtains frequency diversity gain to other.When local formula transmission channel and distributed transmission channel are distributed simultaneously in the base station in a subframe, because the resource of distributed transmission channel occupancy is distributed in the whole system frequency range, will be distributed the formula transmission channel and take so originally belong to a part of resource of local formula transmission channel.
In communication system, the base station is responsible for dispatching Radio Resource and is given subscriber equipment, and the base station is by the transmission of the control subscriber equipment that sends control signaling at down control channel.The base station sends descending control signaling two class fundamental method.
1) encode on separate resource respectively and send the control signaling of each subscriber equipment in the base station; Subscriber equipment then independently receives the control signaling that the base station sends on the resource at each;
2) base station focuses on the control signaling that sends to a plurality of subscriber equipmenies a block of information and adds CRC, and coding sends then; After subscriber equipment then needs correctly to receive this block of information that comprises a plurality of user equipment informations, therefrom extract the control signaling that sends to it.
In the HSDPA system, send with different code words at the descending shared control signal channel of different user devices, the descending shared control information that is to say different user devices sends with resource independently, has promptly adopted above-mentioned first method.
In systems such as IEEE802.16, Downlink Control Information concentrates in the control information territory of a frame front portion and sends, and concentrates in together at the control information of each subscriber equipment and adds CRC check and coding sends, and has promptly adopted above-mentioned second method.
When the base station was distributed local formula transmission and distributed transmission simultaneously, the subscriber equipment that the base station must adopt certain mode to notify which resource of subscriber equipment of the local formula transmission of employing to be used distributed transmission was shared.
In existing solution, in order to finish such function, if use first method above-mentioned, the subscriber equipment that adopts local formula transmission is when correct reception sends to the control signaling of oneself, must correctly receive all and send to the control signaling of the subscriber equipment of current employing distributed transmission, it is occupied which resource is the control signaling that could analyze the subscriber equipment of current employing distributed transmission then obtain.Under the requirement that reaches certain descending control signaling transmission reliability, the base station need consume more power and be used to send each descending control signaling, and it is bigger to adopt the subscriber equipment of local formula transmission to receive the processing expenditure of control signaling simultaneously;
If use second method above-mentioned, the subscriber equipment that adopts the transmission of local formula to the block of information decoding that comprises a plurality of subscriber equipment control informations after, it is shared to analyze the subscriber equipment that obtains giving respectively which resource in its resource to be distributed the formula transmission.But there are the following problems for this method: because the base station sends the block of information bits at a plurality of users in the one and same coding piece, bit number in the encoding block is a lot, transmit through wireless channel, after the user equipment side decoding, the possibility of CRC check failure will increase, in case and CRC check failure, subscriber equipment can only think that whole bit block sends mistake.For the subscriber equipment that is in the channel condition poor position, the reliability that the control signaling receives reduces greatly.
Summary of the invention
At the problem that exists in the above-mentioned existing method, the present invention proposes a kind of method and apparatus that transmits descending control signaling.
According to an aspect of of the present present invention, a kind of base station sends the method for descending control signaling, comprises the steps:
A) base station focuses on a block of information to the position indication information of resources of the subscriber equipment that adopts distributed transmission, transmits in the common downlink control channel after treatment;
B) base station sends at least a portion control information of the subscriber equipment of at least a portion control information except that the resource location indication information in the control signaling of the subscriber equipment that adopts distributed transmission and the local formula transmission of employing on other down control channels.
According to another aspect of the present invention, a kind of subscriber equipment receives the method for descending control signaling, comprises the steps:
A) subscriber equipment receives the common downlink control channel, obtains the position indication information of resources that all subscriber equipmenies that adopt distributed transmission take;
B) subscriber equipment receives the down control channel that comprises customer identification information, and obtains complete Downlink Control Information in conjunction with the information of common downlink control channel.
According to another aspect of the present invention, a kind of base station sends the equipment of descending control signaling, comprising:
A) concatenated coding module is used for the base station block of information and coding is formed in the resource location indication information cascade of the control information of the subscriber equipment that adopts distributed transmission;
B) processing comprises the module of the descending control signaling of customer identification information, is used to handle the resource location indication information control information in addition of the subscriber equipment that adopts distributed transmission and the control information of the subscriber equipment that adopts local formula to transmit.
According to another aspect of the present invention, a kind of subscriber equipment receives the equipment of descending control signaling, comprising:
A) module of processing common downlink control channel is used to receive the common downlink control channel, obtains distributing to the position indication information of resources of the subscriber equipment that adopts distributed transmission;
B) processing comprises the module of the down control channel of subscriber equipment identifying information, be used to receive the down control channel that comprises customer identification information, whether base stations detected is that it has sent Downlink Control Information, and judges that the resource of distributing is distributed resource or local formula resource;
C) comprehensive module, the information that is used for comprehensive common downlink control channel and comprises the down control channel of subscriber equipment identifying information obtains the complete Downlink Control Information of subscriber equipment.
By adopting method of the present invention, adopt the resource that those subscriber equipmenies that are distributed the formula transmission take that obtains that the subscriber equipment of local formula transmission can be fairly simple, reduce the expense of handling descending control signaling, improve the reliability that receives descending control signaling simultaneously.
Description of drawings
Fig. 1 is the frame structure of LTE system;
Fig. 2 is the equipment drawing that descending control signaling is handled in the base station;
Fig. 3 is the equipment drawing that subscriber equipment receives descending control signaling;
Fig. 4 is the flow chart that descending control signaling is handled in the base station among the embodiment one;
Fig. 5 is the flow chart that descending control signaling is handled in the base station among the embodiment two;
Fig. 6 is the flow chart that descending control signaling is handled in the base station among the embodiment three;
Fig. 7 is the flow chart that descending control signaling is handled in the base station among the embodiment four;
Fig. 8 is the flow chart that subscriber equipment receives descending control signaling among embodiment one and three;
Fig. 9 is the flow chart that subscriber equipment receives descending control signaling among embodiment four, five, six and seven;
Figure 10 is an example of base station transmitter hardware block diagram;
Figure 11 is an example of subscriber equipment receiver hardware block diagram;
Figure 12 is the flow chart that descending control signaling is handled in the base station among the embodiment five;
Figure 13 is the flow chart that descending control signaling is handled in the base station among the embodiment six;
Figure 14 is the flow chart that subscriber equipment receives descending control signaling among the embodiment two.
Embodiment
The present invention proposes a kind of method and apparatus of transmitting downlink control signal.Its basic step is as follows: the operation of base station:
1) base station focuses on a block of information to the shared position indication information of resources of subscriber equipment that adopts distributed transmission, transmits in the common downlink control channel after treatment;
2) base station partly or entirely on other down control channels, launching the control information except that the resource location indication information in the control signaling of the subscriber equipment that adopts distributed transmission with the part or all of control information of the subscriber equipment that adopts local formula transmission.
Among the present invention, to being explained as follows of down control channel structure:
1) common downlink control channel
The common downlink control channel is used to transmit the position indication information of resources of the subscriber equipment that adopts distributed transmission.According to the configuration of base station, adopt other control informations of the part except that the resource location indication information of the subscriber equipment of distributed transmission can in Common Control Channel, transmit with a part of control information of adopting local formula transmission;
2) comprise the down control channel of subscriber equipment identifying information
This part down control channel comprises the descending control signaling of each subscriber equipment, and comprises the information of differentiation different user devices such as subscriber equipment ID.To the control signaling of the subscriber equipment that adopts distributed transmission, the control information beyond this part control channel transfer channel resource location indication information is part or all of; The position indication information of the distributed resource in the control information of the subscriber equipment of the distributed transmission that transmits in this part down control channel and the common downlink control channel is corresponding one by one.Control signaling, this part control channel translator unit or all control informations to the subscriber equipment that adopts the transmission of local formula.
The present invention is to top step 1), and a kind of processing method is the block of information of the position indication information of resources that comprises the subscriber equipment that adopts distributed transmission to be added CRC transmit in the common downlink control channel then; Another kind of processing method is that the block of information that comprises the position indication information of resources of the subscriber equipment that adopts distributed transmission is not added CRC and directly transmitted in the common downlink control channel, and the control information that transmits in other down control channels simultaneously need comprise the position indication information of resources of the subscriber equipment that adopts distributed transmission when calculating CRC.At this moment, a kind of processing method block of information that to be the base station be cascaded into according to the indication information of the resource of the subscriber equipment that adopts distributed transmission and in same encoding block the Downlink Control Information of a plurality of subscriber equipmenies of combined coding calculate CRC.Another kind method is the subscriber equipment to the employing distributed transmission, and CRC are calculated to all control informations that comprise its resource location indication information in the base station; To adopting the subscriber equipment of local formula transmission, CRC are calculated to block of information and its all control informations that the indication information of the resource of the subscriber equipment that adopts distributed transmission is cascaded in the base station.
The present invention is to top step 2) in other down control channels, a kind of processing method is to encode respectively to the control information of each subscriber equipment and independently sending on the control channel in the base station.Second kind of processing method is that combined coding and transmission are carried out in base station control information to each subscriber equipment on a down control channel; To be the base station be divided into a plurality of groups to subscriber equipment according to the factors such as channel condition of subscriber equipment to the third processing method, and respectively to the Downlink Control Information combined coding and the transmission of the subscriber equipment of each group;
Be the equipment drawing that the base station sends descending control signaling among the present invention as shown in Figure 2.On the one hand, the base station is cascaded into block of information and coding (202) to the resource location indication information in the control information of the subscriber equipment of a plurality of employing distributed transmission (201); Then through further handling back transmission (203) in physical layer common downlink control channel; On the other hand, the base station is to the part or all of of other control informations except that the resource location indication information in the control information (201) of the subscriber equipment of employing distributed transmission and adopt part or all of control information (204) execution of the subscriber equipment of local formula transmission to handle (205) accordingly, a kind of processing method is to independent respectively CRC of interpolation of the control information of each subscriber equipment of base station and coding, another method is that the base station is unified into a block of information to the control information of each subscriber equipment, add CRC and coding then, another method is that the base station is divided into a plurality of groups to the control information of each subscriber equipment, and the base station is respectively the control information cascade of every group of subscriber equipment then, add CRC and coding; Next in other down control channels of physical layer, send (206) through further handling the back.When module (202) and module (204) processing CRC, a kind of processing method block of information that to be module (202) be cascaded into the resource location indication information by the subscriber equipment of a plurality of employing distributed transmission is added CRC, and module (204) no longer comprises the resource location indication information of the subscriber equipment of distributed transmission when calculating CRC simultaneously; Another kind of processing method is that module (202) is not added CRC to this by the block of information that the resource location indication information is cascaded into, and module (204) need comprise the resource location indication information of the subscriber equipment of distributed transmission when calculating CRC simultaneously.
The operation of subscriber equipment
1) subscriber equipment receives the position indication information of resources that the common downlink control channel obtains adopting the subscriber equipment of distributed transmission;
2) subscriber equipment receives the down control channel that comprises the subscriber equipment identifying information, and judges with its subscriber equipment ID whether the base station is that it has sent descending control signaling and has done corresponding processing;
The superincumbent step 2 of the present invention) in, be when sending to oneself when the user judges certain descending control signaling:
1) if the base station is its scheduling distributed channel resource, subscriber equipment obtains control information part or all of except that distributed channel resource location indication information from its downlink signaling; Obtain distributed channel resource etc. from common downlink control channel correspondence, comprehensive then all Downlink Control Information demodulating datas;
2) if local formula channel resource is dispatched for it in the base station, subscriber equipment obtains part or all of control information from its downlink signaling, obtain from the analysis of common downlink control channel second portion simultaneously which resource is distributed the formula resource occupation in its local formula channel resource, comprehensive then all Downlink Control Information demodulating datas.
Be the equipment drawing that subscriber equipment receives descending control signaling among the present invention as shown in Figure 3.On the one hand, subscriber equipment receives the common downlink control channel, and decoding obtains adopting the position indication information of resources (301) that the subscriber equipment of distributed transmission takies then; On the other hand, subscriber equipment receives other down control channels that comprise the subscriber equipment identifying information, decoding obtains the control information at a special user equipment then, and judges with its subscriber equipment ID whether the base station is that it has sent descending control signaling (302); In module (301) and module (302), when CRC had been added to the block of information of the resource location indication information of the subscriber equipment of the employing distributed transmission in the common downlink control channel in the base station, module (301) and module (302) were respectively to the information checking CRC of this module; When CRC was not added to the block of information of the resource location indication information of the subscriber equipment of the employing distributed transmission in the common downlink control channel in the base station, module (302) was the associating of the control information in the resource location indication information of the subscriber equipment of the distributed transmission in the module (301) and the module (302) check (CRC).If subscriber equipment is judged the base station not for it sends descending control signaling, the process that subscriber equipment receives descending control signaling finishes; When subscriber equipment judged that the base station has sent descending control signaling for it, subscriber equipment distributed resource position indication information (301) and base station other Downlink Control Information (302) of being its transmission in comprehensive common downlink control channel obtained complete Downlink Control Information (303).
Embodiment
This part has provided seven embodiment of this invention.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:
In the present embodiment, the base station is cascaded into all position indication information of resources of distributing to the subscriber equipment that adopts distributed transmission a block of information and adds CRC, and what the base station sent the control information except that the resource location indication information of the subscriber equipment that adopts distributed transmission and subscriber equipment that the local formula of employing is transmitted respectively on resource independently simultaneously comprises the resource location indication information in interior control information.
Fig. 4 is the flowchart illustration that descending control signaling is handled in the base station under this mode.The base station is cascaded into all position indication information of resources of distributing to the subscriber equipment that adopts distributed transmission a block of information and adds CRC (401); Each is adopted the subscriber equipment of distributed transmission, and CRC (402) is added to other control informations beyond its resource location indication information in the base station; Each is adopted the subscriber equipment of local formula transmission, and CRC (402) is added to all control informations that it comprises the resource location indication information in the base station; Next, the base station is further handled the back to the block of information of the shared position indication information of resources cascade composition of the subscriber equipment of the employing distributed transmission of having added CRC and send (404) in the common downlink control channel; The base station is independently sending (405) on the down control channel respectively after the control information except that the resource location indication information of the subscriber equipment of the employing distributed transmission of having added CRC is further handled; The base station is independently sending (406) to the resource location indication information that comprises of the subscriber equipment of the local formula transmission of the employing of having added CRC on the down control channel respectively after interior control information is further handled;
Be the flow chart that subscriber equipment receives descending control signaling under this mode as shown in Figure 8.Subscriber equipment receive common downlink control channel and decoding obtain comprising the subscriber equipment that adopts distributed transmission position indication information of resources block of information and do CRC check (801); Subscriber equipment receives each down control channel that independently sends respectively, distinguishes its CRC of verification, and judges with its subscriber equipment ID whether the base station is that it has sent control signaling (802); If subscriber equipment judges when the base station has sent the control signaling for it that subscriber equipment needs further to judge that the base station is distributed channel resource or local formula channel resource (803) for the resource of its distribution; If the distributed channel resource has been distributed for it in the base station, subscriber equipment sends to the control information (804) that obtains its descending control signaling except that the distributed resource position indication information from the base station; Subscriber equipment corresponding position indication information (805) that obtains distributing to its distributed resource from the common downlink control channel simultaneously; This adopts the subscriber equipment of distributed transmission to obtain complete Downlink Control Information (808) like this; In step (803), if judging the base station, subscriber equipment distributed local formula channel resource for it, subscriber equipment sends to from the base station and obtains comprising that local formula resource location indication information is in inner control information (806) its descending control signaling; Subscriber equipment is analyzed from the common downlink control channel and is obtained in distributing to its local formula resource which resource and be distributed the formula transmission channel and take (807) then; This adopts the subscriber equipment of local formula transmission to obtain complete Downlink Control Information (808) like this.
Figure 10 has provided an example of base station transmitter hardware block diagram when adopting the inventive method.As shown in the figure, the Downlink Control Information (1001 of a plurality of subscriber equipmenies of base station control unit (1000) control and treatment, 1002), the structure (1003) that the processing cost invention proposes, chnnel coding, rate-matched are carried out and interweave (1004) to the control signaling after handling in the base station then, next it are modulated (1005), add Cyclic Prefix (1006), steering D/A conversion (1007) is at last by radio frequency sending set (1008) and antenna (1009) emission.
Figure 11 has provided an example of subscriber equipment receiver hardware block diagram when adopting the inventive method.Subscriber equipment receives from signal of base station by antenna (1100) and radio-frequency transmitter (1101), through mould/transformation of variables (1102), remove Cyclic Prefix (1103), demodulation (1104), the data deinterlacing that subscriber equipment sends the base station, separate rate-matched and decoding (1105), whether end user Equipment Inspection base station is to have sent descending control signaling and done suitable processing (1106).
Second embodiment:
Present embodiment based on hypothesis identical with embodiment one, provide subscriber equipment to handle the another kind of mode of descending control signaling.
The flow process that is processing descending control signaling in base station under this mode as shown in Figure 4 is identical with embodiment one.
Be the flow chart that subscriber equipment receives descending control signaling under this mode as shown in figure 14.Subscriber equipment receives each down control channel that independently comprises the subscriber equipment identifying information and check (CRC) (1401) respectively; Whether be that subscriber equipment has sent control signaling (1402) according to the base station then, if subscriber equipment judges that the base station not for it sends control signaling, receives the EO of signaling; If subscriber equipment judges the base station and sent the control signaling for it, subscriber equipment receives the common downlink control channel and the block of information (1403) of the position indication information of resources that obtains comprising the subscriber equipment that adopts distributed transmission of decoding; Giving the resource of subscriber equipment according to base station assigns is distributed resource or local formula resource (1404), if the distributed channel resource has been distributed for it in the base station, subscriber equipment sends to the control information (1405) that obtains its descending control signaling except that the distributed resource position indication information from the base station; Subscriber equipment corresponding position indication information (1406) that obtains distributing to its distributed resource from the common downlink control channel simultaneously; This adopts the subscriber equipment of distributed transmission to obtain complete Downlink Control Information (1409) like this; In step (1404), if judging the base station, subscriber equipment distributed local formula channel resource for it, subscriber equipment sends to from the base station and obtains comprising that local formula resource location indication information is in inner control information (1407) its descending control signaling; Subscriber equipment is analyzed from the common downlink control channel and is obtained in distributing to its local formula resource which resource and be distributed the formula transmission channel and take (1408) then; This adopts the subscriber equipment of local formula transmission to obtain complete Downlink Control Information (1409) like this.
The 3rd embodiment:
In the present embodiment, the base station is cascaded into all position indication information of resources of distributing to the subscriber equipment that adopts distributed transmission a block of information and adds CRC, and the base station is cascaded to a block of information transmission to the resource location indication information that comprises of the control information except that the resource location indication information of the subscriber equipment that adopts distributed transmission and the subscriber equipment that adopts local formula transmission in interior control information simultaneously.
Fig. 5 is the flowchart illustration that descending control signaling is handled in the base station under this mode.The base station is cascaded into all position indication information of resources of distributing to the subscriber equipment that adopts distributed transmission a block of information and adds CRC (501); The base station is all control information cascades that comprise the resource location indication information of the subscriber equipment of other control informations except that the resource location indication information of the subscriber equipment that adopts distributed transmission and the local formula transmission of employing and add CRC (502); Next, the base station sends (503) to the block of information of the shared position indication information of resources cascade composition of the subscriber equipment of the employing distributed transmission of having added CRC in the common downlink control channel after further handling; The base station is the control information that comprises resource location indication information cascade transmission (504) on a down control channel after further handling of the control information except that resource indication information of the subscriber equipment of the employing distributed transmission of having added CRC and the subscriber equipment that adopts local formula transmission.
The flow chart that subscriber equipment as shown in Figure 8 receives descending control signaling can be used for present embodiment.Subscriber equipment receive the decoding of common downlink control channel obtain comprising the subscriber equipment that adopts distributed transmission position indication information of resources block of information and do CRC check (801); Subscriber equipment is received in the control information that cascade on the down control channel sends, its CRC of verification, and judge with its subscriber equipment ID whether the base station is that it has sent control signaling (802); If subscriber equipment judges when the base station has sent the control signaling for it that subscriber equipment needs further to judge that the base station is distributed channel resource or local formula channel resource (803) for the resource of its distribution; If the distributed channel resource has been distributed for it in the base station, subscriber equipment sends to the control information (804) that obtains its descending control signaling except that the distributed resource position indication information from the base station; Subscriber equipment corresponding position indication information (805) that obtains distributing to its distributed resource from the common downlink control channel simultaneously; This adopts the subscriber equipment of distributed transmission to obtain complete Downlink Control Information (808) like this; In step (803), if judging the base station, subscriber equipment distributed local formula channel resource for it, subscriber equipment sends to from the base station and obtains comprising that local formula resource location indication information is in inner control information (806) its descending control signaling; Subscriber equipment is analyzed from the common downlink control channel and is obtained in distributing to its local formula resource which resource and be distributed the formula transmission channel and take (807) then; This adopts the subscriber equipment of local formula transmission to obtain complete Downlink Control Information (808) like this.
The 4th embodiment:
In the present embodiment, the base station is cascaded into a block of information to all position indication information of resources of distributing to the subscriber equipment that adopts distributed transmission, but does not add CRC.What simultaneously the base station sent the control information except that the resource location indication information of the subscriber equipment that adopts distributed transmission and subscriber equipment that the local formula of employing is transmitted respectively on resource independently comprises the resource location indication information in interior control information.
Fig. 6 is the flowchart illustration that descending control signaling is handled in the base station under this mode.The base station is cascaded into a block of information to the indication information of the resource of distributing to the subscriber equipment that adopts distributed transmission, but does not add CRC (601) for it; Each is adopted the subscriber equipment of distributed transmission, and CRC (602) is calculated to all control informations that comprise its resource location indication information respectively in the base station; Each is adopted the subscriber equipment of local formula transmission, and CRC (603) are calculated to the indication information block of information that is cascaded into and all control informations that it comprises the resource location indication information of the resource of the subscriber equipment of employing distributed transmission in the base station; Next, the base station sends (604) to the block of information of the shared position indication information of resources cascade composition of the subscriber equipment that adopts distributed transmission in the common downlink control channel after further handling; The base station is independently sending (605) to the control information except that the resource location indication information of the subscriber equipment of the employing distributed transmission of having added CRC on the down control channel respectively after further handling; The base station is independently sending (606) to the resource location indication information that comprises of the subscriber equipment of the local formula transmission of the employing of having added CRC on the down control channel in interior control information respectively after further handling;
Be the flow chart that subscriber equipment receives descending control signaling under this mode as shown in Figure 9.Subscriber equipment at first receives the block of information (901) that common downlink control channel and decoding obtain comprising the position indication information of resources of the subscriber equipment that adopts distributed transmission; Then subscriber equipment receives the down control channel that each independently sends respectively, judge then in conjunction with the position indication information of resources check (CRC) of the subscriber equipment of the employing distributed transmission received, and with its subscriber equipment ID whether the base station is that it has sent control signaling (902); In step (902), to adopting the subscriber equipment of distributed transmission, subscriber equipment is with the resource location indication information check (CRC) of correspondence in the block of information of its control information except that the distributed resource position indication information and step (901); To adopting the subscriber equipment of local formula transmission, subscriber equipment comprises the control information of local formula resource location indication information and the whole block of information check (CRC) of step (901) with it; If subscriber equipment judges when the base station has sent the control signaling for it that subscriber equipment needs further to judge that the base station is distributed channel resource or local formula channel resource (903) for the resource of its distribution; If the distributed channel resource has been distributed for it in the base station, subscriber equipment sends to the control information (904) that obtains its descending control signaling except that the distributed resource position indication information from the base station; Subscriber equipment corresponding position indication information (905) that obtains distributing to its distributed resource from the common downlink control channel simultaneously; This adopts the subscriber equipment of distributed transmission to obtain complete Downlink Control Information (908) like this; In step (903), if judging the base station, subscriber equipment distributed local formula channel resource for it, subscriber equipment sends to from the base station and obtains comprising that local formula resource location indication information is in inner control information (906) its descending control signaling; Subscriber equipment is analyzed from the common downlink control channel and is obtained in distributing to its local formula resource which resource and be distributed the formula transmission channel and take (907) then; This adopts the subscriber equipment of local formula transmission to obtain complete Downlink Control Information (908) like this.
The 5th embodiment:
In the present embodiment, the base station is cascaded into a block of information to all position indication information of resources of distributing to the subscriber equipment that adopts distributed transmission, but does not add CRC.The base station is cascaded to a block of information transmission to the resource location indication information that comprises of the subscriber equipment of the control information except that the resource location indication information of the subscriber equipment that adopts distributed transmission and the local formula transmission of employing in interior control information simultaneously.
Fig. 7 is the flowchart illustration that descending control signaling is handled in the base station under this mode.The base station is cascaded into a block of information to the indication information of the resource of distributing to the subscriber equipment that adopts distributed transmission, but does not add CRC (701); Each is adopted the subscriber equipment of distributed transmission, and CRC (702) is calculated to all control informations that comprise its resource location indication information in the base station; Each is adopted the subscriber equipment of local formula transmission, and CRC (703) are calculated to the indication information block of information that is cascaded into and all control informations that it comprises the resource location indication information of the resource of the subscriber equipment of employing distributed transmission in the base station; Then, the base station sends (704) after treatment to the block of information of the shared position indication information of resources cascade composition of the subscriber equipment that adopts distributed transmission in the common downlink control channel; And the base station the control information except that resource indication information of the subscriber equipment of the employing distributed transmission of having added CRC and the control information that comprises the resource location indication information of subscriber equipment of the local formula transmission of employing of having added CRC after further processing in a down control channel cascade transmission (705).
The flow chart that subscriber equipment as shown in Figure 9 receives descending control signaling can be used for present embodiment.Subscriber equipment at first receives the block of information (901) that common downlink control channel and decoding obtain comprising the position indication information of resources of the subscriber equipment that adopts distributed transmission; Then subscriber equipment is received in the control information that cascade sends on the down control channel, judge then in conjunction with the position indication information of resources check (CRC) of the subscriber equipment of the employing distributed transmission received, and with its subscriber equipment ID whether the base station is that it has sent control signaling (902); In step (902), to adopting the subscriber equipment of distributed transmission, subscriber equipment is with the resource location indication information check (CRC) of correspondence in the block of information of its control information except that the distributed resource position indication information and step (901); To adopting user's stem of local formula transmission, subscriber equipment comprises the control information of local formula resource location indication information and the whole block of information check (CRC) of step (901) with it; If subscriber equipment judges when the base station has sent the control signaling for it that subscriber equipment needs further to judge that the base station is distributed channel resource or local formula channel resource (903) for the resource of its distribution; If the distributed channel resource has been distributed for it in the base station, subscriber equipment sends to the control information (904) that obtains its descending control signaling except that the distributed resource position indication information from the base station; Subscriber equipment corresponding position indication information (905) that obtains distributing to its distributed resource from the common downlink control channel simultaneously; This adopts the subscriber equipment of distributed transmission to obtain complete Downlink Control Information (908) like this; In step (903), if judging the base station, subscriber equipment distributed local formula channel resource for it, subscriber equipment sends to from the base station and obtains comprising that local formula resource location indication information is in inner control information (906) its descending control signaling; Subscriber equipment is analyzed from the common downlink control channel and is obtained in distributing to its local formula resource which resource and be distributed the formula transmission channel and take (907) then; This adopts the subscriber equipment of local formula transmission to obtain complete Downlink Control Information (908) like this.
The 6th embodiment:
In the present embodiment, the base station at first is divided into a plurality of groups to subscriber equipment according to the information such as channel condition of subscriber equipment, the base station is cascaded into a block of information to all position indication information of resources of distributing to the subscriber equipment that adopts distributed transmission, but does not add CRC.CRC is added to the control information cascade of every group of subscriber equipment in the base station, coding emission then.
Figure 12 is the flowchart illustration that descending control signaling is handled in the base station under this mode.The base station at first is divided into a plurality of groups (1201) to subscriber equipment according to the information such as channel condition of subscriber equipment; The base station is cascaded into a block of information to the indication information of the resource of distributing to the subscriber equipment that adopts distributed transmission then, but does not add CRC (1202); The block of information that the base station is cascaded into the indication information of the resource of the subscriber equipment that adopts distributed transmission is calculated CRC (1203) with the Downlink Control Information of every group of subscriber equipment respectively; Then, the base station sends (1204) to the block of information of the shared position indication information of resources cascade composition of the subscriber equipment that adopts distributed transmission in the common downlink control channel after further handling; To every group of subscriber equipment, the base station sends the Downlink Control Information (1205) that has added CRC after further handling.
The flow chart that subscriber equipment as shown in Figure 9 receives descending control signaling can be used for present embodiment.Subscriber equipment at first receives the block of information (901) that common downlink control channel decoding obtains comprising the position indication information of resources of the subscriber equipment that adopts distributed transmission; Then subscriber equipment is by other Downlink Control Information of group of received base station transmission, then subscriber equipment in conjunction with the block of information of the position indication information of resources of the subscriber equipment of the employing distributed transmission received respectively with the control information check (CRC) of every group of subscriber equipment, and judge with its subscriber equipment ID whether the base station is that it has sent control signaling (902); If subscriber equipment judges when the base station has sent the control signaling for it that subscriber equipment needs further to judge that the base station is distributed channel resource or local formula channel resource (903) for the resource of its distribution; If the distributed channel resource has been distributed for it in the base station, subscriber equipment sends to the control information (904) that obtains its descending control signaling except that the distributed resource position indication information from the base station; Subscriber equipment corresponding position indication information (905) that obtains distributing to its distributed resource from the common downlink control channel simultaneously; This adopts the subscriber equipment of distributed transmission to obtain complete Downlink Control Information (908) like this; In step (903), if judging the base station, subscriber equipment distributed local formula channel resource for it, subscriber equipment sends to from the base station and obtains comprising that local formula resource location indication information is in inner control information (906) its descending control signaling; Subscriber equipment is analyzed from the common downlink control channel and is obtained in distributing to its local formula resource which resource and be distributed the formula transmission channel and take (907) then; This adopts the subscriber equipment of local formula transmission to obtain complete Downlink Control Information (908) like this.
The 7th embodiment:
In the present embodiment, the base station at first is divided into a plurality of groups to subscriber equipment according to the information such as channel condition of subscriber equipment, the base station is cascaded into a block of information to all position indication information of resources of distributing to the subscriber equipment that adopts distributed transmission, but does not add CRC.The base station is added CRC respectively to the control information of each subscriber equipment, then the control information concatenated coding of every group of subscriber equipment is launched.
Figure 13 is the flowchart illustration that descending control signaling is handled in the base station under this mode.The base station at first is divided into a plurality of groups (1301) to subscriber equipment according to the information such as channel condition of subscriber equipment; The base station is cascaded into a block of information to the indication information of the resource of distributing to the subscriber equipment that adopts distributed transmission then, but does not add CRC (1302); Each is adopted the subscriber equipment of distributed transmission, and CRC (1303) is calculated to all control informations that comprise its resource location indication information in the base station; Each is adopted the subscriber equipment of local formula transmission, and CRC (1304) are calculated to the indication information block of information that is cascaded into and all control informations that it comprises the resource location indication information of the resource of the subscriber equipment of employing distributed transmission in the base station; Then, the base station sends (1305) to the block of information of the shared position indication information of resources cascade composition of the subscriber equipment that adopts distributed transmission in the common downlink control channel after further handling; At last, to every group of subscriber equipment, the base station sends the Downlink Control Information (1306) that has added CRC after further handling.
The flow chart that subscriber equipment as shown in Figure 9 receives descending control signaling can be used for present embodiment.Subscriber equipment at first receives the block of information (901) that common downlink control channel and decoding obtain comprising the position indication information of resources of the subscriber equipment that adopts distributed transmission; Then subscriber equipment is by other Downlink Control Information of group of received base station transmission, subscriber equipment is in conjunction with the position indication information of resources check (CRC) of the subscriber equipment of the employing distributed transmission received then, and judges that with its subscriber equipment ID whether the base station is for having sent control signaling (902); In step (902), to adopting the subscriber equipment of distributed transmission, subscriber equipment is with the resource location indication information check (CRC) of correspondence in the block of information of its control information except that the distributed resource position indication information and step (901); To adopting user's stem of local formula transmission, subscriber equipment comprises the control information of local formula resource location indication information and the whole block of information check (CRC) of step (901) with it; If subscriber equipment judges when the base station has sent the control signaling for it that subscriber equipment needs further to judge that the base station is distributed channel resource or local formula channel resource (903) for the resource of its distribution; If the distributed channel resource has been distributed for it in the base station, subscriber equipment sends to the control information (904) that obtains its descending control signaling except that the distributed resource position indication information from the base station; Subscriber equipment corresponding position indication information (905) that obtains distributing to its distributed resource from the common downlink control channel simultaneously; This adopts the subscriber equipment of distributed transmission to obtain complete Downlink Control Information (908) like this; In step (903), if judging the base station, subscriber equipment distributed local formula channel resource for it, subscriber equipment sends to from the base station and obtains comprising that local formula resource location indication information is in inner control information (906) its descending control signaling; Subscriber equipment is analyzed from the common downlink control channel and is obtained in distributing to its local formula resource which resource and be distributed the formula transmission channel and take (907) then; This adopts the subscriber equipment of local formula transmission to obtain complete Downlink Control Information (908) like this.
Claims (21)
1. the method for a base station transmission descending control signaling comprises the steps:
A) base station focuses on a block of information to the position indication information of resources of the subscriber equipment that adopts distributed transmission, transmits in the common downlink control channel after treatment;
B) base station is removing resource location in the control signaling of the subscriber equipment that adopts distributed transmission
At least a portion control information of the subscriber equipment of the local formula transmission of at least a portion control information beyond the indication information and employing sends on other down control channels.
2. method according to claim 1 is characterized in that in step a), adopts other control informations of the part except that the resource location indication information of the subscriber equipment of distributed transmission to transmit in the common downlink control channel.
3. method according to claim 1 is characterized in that in step a), adopts a part of control information of local formula transmission to transmit in the common downlink control channel.
4. method according to claim 1 is characterized in that in step b), and what the base station sent controls the position indication information of resources that does not comprise distribution in the signaling at the user's equipment downward that adopts distributed transmission.
5. method according to claim 1, it is characterized in that the control signaling to the subscriber equipment that adopts distributed transmission, the resource location indication information that transmit in the common downlink control channel base station is corresponding one by one with the control information beyond the resource location indication information that transmits in other control channels.
6. method according to claim 1 is characterized in that in step b), encodes respectively to the control information of each subscriber equipment and send in the base station.
7. method according to claim 1 is characterized in that in step b), and the base station is to the control information combined coding and the transmission of each subscriber equipment.
8. method according to claim 1 is characterized in that in step b) the base station is divided into a plurality of groups to subscriber equipment according to factors such as user device channel conditions, and respectively to the control information combined coding and the transmission of the subscriber equipment of each group.
9. method according to claim 1 is characterized in that the position indication information of resources cascaded message piece interpolation CRC of base station to the subscriber equipment of employing distributed transmission.
10. method according to claim 1 is characterized in that the base station do not add CRC to the position indication information of resources cascaded message piece of the subscriber equipment that adopts distributed transmission.
11. method according to claim 10 is characterized in that needs when CRC is calculated according to the control information that transmits in other down control channels in the base station comprise the position indication information of resources of the subscriber equipment that adopts distributed transmission simultaneously.
12. method according to claim 11 is characterized in that the Downlink Control Information of a plurality of subscriber equipmenies of block of information that the base station is cascaded into according to the indication information of the resource of the subscriber equipment that adopts distributed transmission and same encoding block calculates CRC.
13. method according to claim 11 is characterized in that CRC is calculated to all control informations that comprise its resource location indication information in the base station to adopting the subscriber equipment of distributed transmission.
14. method according to claim 11 is characterized in that adopting the subscriber equipment of local formula transmission, CRC are calculated to block of information and its all control informations that the indication information of the resource of the subscriber equipment that adopts distributed transmission is cascaded in the base station.
15. a subscriber equipment receives the method for descending control signaling, comprises the steps:
A) subscriber equipment receives the common downlink control channel, obtains the position indication information of resources that all subscriber equipmenies that adopt distributed transmission take;
B) subscriber equipment receives the down control channel that comprises customer identification information, and obtains complete Downlink Control Information in conjunction with the information of common downlink control channel.
16. method according to claim 15 is characterized in that in step a), adopts the subscriber equipment of distributed transmission to obtain the position indication information of resources of base station assigns to it from the common downlink control channel.
17. method according to claim 15, it is characterized in that in step a), adopt the subscriber equipment of local formula transmission shared to the subscriber equipment which resource its local formula channel resource is used distributed transmission from common downlink control channel analysis of allocated.
18. method according to claim 15, it is characterized in that in step b) the subscriber equipment that adopts distributed transmission obtains at least a portion control information beyond the resource location indication information of base station assigns from reception comprises the down control channel of customer identification information.
19. method according to claim 15 is characterized in that in step b), adopts the subscriber equipment of local formula transmission to obtain comprising at least a portion Downlink Control Information of distributing to it from the down control channel that reception comprises customer identification information.
20. a base station sends the equipment of descending control signaling, comprising:
A) concatenated coding module is used for the base station block of information and coding is formed in the resource location indication information cascade of the control information of the subscriber equipment that adopts distributed transmission;
B) processing comprises the module of the descending control signaling of customer identification information, is used to handle resource location indication information at least a portion control information in addition of the subscriber equipment that adopts distributed transmission and at least a portion control information of the subscriber equipment that adopts local formula to transmit.
21. a subscriber equipment receives the equipment of descending control signaling, comprising:
A) module of processing common downlink control channel is used to receive the common downlink control channel, obtains distributing to the position indication information of resources of the subscriber equipment that adopts distributed transmission;
B) processing comprises the module of the down control channel of subscriber equipment identifying information, be used to receive the down control channel that comprises customer identification information, whether base stations detected is that it has sent Downlink Control Information, and judges that the resource of distributing is distributed resource or local formula resource;
C) comprehensive module, the information that is used for comprehensive common downlink control channel and comprises the down control channel of subscriber equipment identifying information obtains the complete Downlink Control Information of subscriber equipment.
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| CN 200610006543 CN101001138A (en) | 2006-01-13 | 2006-01-13 | Equipment and method for transmitting downlink control signal |
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| CN 200610006543 CN101001138A (en) | 2006-01-13 | 2006-01-13 | Equipment and method for transmitting downlink control signal |
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