CN101060699A - A downlink control signaling transmission method and equipment - Google Patents
A downlink control signaling transmission method and equipment Download PDFInfo
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- CN101060699A CN101060699A CNA200610073988XA CN200610073988A CN101060699A CN 101060699 A CN101060699 A CN 101060699A CN A200610073988X A CNA200610073988X A CN A200610073988XA CN 200610073988 A CN200610073988 A CN 200610073988A CN 101060699 A CN101060699 A CN 101060699A
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Abstract
The transmission method for down control signaling comprises: according to distributed or local transmission way, network shares control channel or special data channel to transmit all signaling except the resource indication signaling. This invention can improve transmission reliability.
Description
Technical field
The present invention relates to mobile radio communications system, particularly relate to the transmission method and the equipment of a kind of descending control signaling in the ofdm system.
Background technology
At present, 3GPP (The 3rd Generation Partnership Project) standardization body has set about beginning its existing system standard is carried out long-term evolution (LTE-Long TermEvolution).In the middle of numerous physical layer transmission technology, OFDM (OFDM-Orthogonal Frequency Division Multiplexing) technology is with its higher availability of frequency spectrum, 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.
In the physical layer of OFDM wireless transmitting system, descending except transmitting user data, also need to transmit L1/L2 control signaling.The control signaling provides control information for the functions such as demodulation, scheduling and HARQ of user data.At first introduce the transmission means of user data below, introduce the transmission means of control signaling then.
The OFDM data-transmission mode has two kinds: local formula (Localized) transmission mode and distributed (Distributed) transmission mode.So-called local formula transfer of data, be exactly that transfer of data is transmitted on the continuous sub-carriers on the sub-band of part, network terminal will be according to quality of channel between base station and subscriber equipment, for transfer of data therebetween specifies effective modulation coding mode realizing adaptive modulating-coding, thereby improve the throughput of transfer of data.And in the distributed transmission pattern, subscriber equipment uses discontinuous subcarrier to transmit, thereby obtains frequency diversity gain.Common local formula data-transmission mode, can utilize adaptive coding and modulating and frequency scheduling, its transmission gain is bigger, but for some channel variation situation faster, certain channel situation of predicting constantly can't reflect next channel situation constantly, and so local formula transmission is difficult to use.In this case, tend to adopt the distributed data transmission, utilize the gain of frequency diversity to transmit data.Prove that by emulation for low speed user, the scheduling gain of local formula transmission is greater than the frequency diversity gain of distributed transmission.
The scheduling of user data and transmission are to be unit with the Resource Block.A Physical Resource Block (physicalresource block) is made up of M continuous sub-carriers in N the continuous OFDM symbol.The granularity of resource allocation should be complementary with the load of minimum, also will consider the adaptive characteristic of frequency domain channel simultaneously.At present, the big or small S of Physical Resource Block
PRBOrder temporarily and be M * N, M=25 wherein, N equals the length (here in order to simplify description, having ignored frequency pilot sign and the shared position of control signaling) of OFDM symbol in the subframe.Table 1 has been described Physical Resource Block bandwidth and Physical Resource Block number under the various bandwidth.
Physical Resource Block bandwidth and Physical Resource Block number under the various bandwidth of table 1.
| Bandwidth (MHz) | 1.2 5 | 2.5 | 5.0 | 10. 0 | 15. 0 | 20. 0 |
| Physical Resource Block bandwidth (kHz) | 375 | 375 | 375 | 375 | 375 | 375 |
| The Physical Resource Block number | 3 | 6 | 12 | 24 | 36 | 48 |
Whether M can have other values, and for example M=15 or M=12 or M=10 or M get other values and can continue to consider according to the research of interference coordination (interference coordination).
In 3GPP TR25.814, defined the notion of virtual resource blocks.A virtual resource blocks has following characteristic:
Size: with the running time-frequency resource is unit;
Type: local formula (Localized) transmission mode or distributed (distributed, orscattered) transmission mode.
Local formula virtual resource blocks is mapped on the Physical Resource Block in local formula mode, and distributed virtual resource block is mapped on the Physical Resource Block with distributed way.It is undetermined at present specifically to be mapped to the mapping relations of Physical Resource Block from virtual resource blocks.
Local formula transmission and distributed transmission are carried out frequency division multiplexing (FDM) in a subframe.After virtual resource blocks is mapped to Physical Resource Block, on the whole transmission bandwidth combination of local formula transmission and distributed transmission.As shown in Figure 1, provided the multiplexing schematic diagram of local formula and distributed resource.Among Fig. 1, have two Physical Resource Block to be used for distributed transmission, remaining Physical Resource Block is used for local formula transmission.In this multiplex mode, a Physical Resource Block or be used for the transmission of local formula, or be used for distributed transmission, local formula resource and distributed resource can not be multiplexed in the Physical Resource Block.The user terminal that is in the distributed transmission pattern is further multiplexing on these two Physical Resource Block that are used for distributed transmission, and the user terminal that is in local formula transmission mode is used on the Physical Resource Block of local formula transmission further multiplexing at all the other.This local formula and distributed Resource Block multiplexing structure may be semi-static variations, also may be dynamic variation (changing based on each subframe).The user terminal device that can be scheduled distributes a plurality of virtual resource blocks.
The multiplexing structure of above-mentioned local formula and distributed resource is determined by network, and will be notified to user terminal.The notice of this signaling has multiple mode, more direct a kind of mode is to use the method for bit mapping (bit-mapping), exactly with length be 0 or 1 bit sequence of l (l equals the Physical Resource Block sum) to indicate each Physical Resource Block be to be used for distributed transmission, still local formula transmission.Sequence from left to right is followed successively by the 0th, and the 1st ..., the l-1 position.The mapping situation of i the Physical Resource Block of i bit representation of sequence (i=0,1,2 ..., l-1).Can indicate this Physical Resource Block to be used for distributed transmission with 1, indicate this Physical Resource Block to be used for local formula transmission with 0.The advice method of another kind of signaling is based on Calculation Method and indicates the multiplexing of local formula and distributed resource blocks.Its basic thought is a known distribution formula virtual resource blocks number, can calculate the shared Physical Resource Block position of distributed transmission according to the mapping formula that provides in advance, and remaining Physical Resource Block is used for the transmission of local formula virtual resource blocks.
Descending L1/L2 control signaling comprises several classes, and a class is the signaling that is used to indicate resource allocation, comprises user identification code (UE-ID), resource allocation and distribution duration; One class is a transformat, comprises modulation system, the size of aerial information (information of MIMO) and transmission block; Another kind of is the signaling relevant with HARQ, comprises that HARQ crosses program number (HARQ process number is if that use is asynchronous HARQ), and redundancy versions (redundancy version).
In existing discussion about the transmission of control signaling, two kinds of methods are roughly arranged, method one is at shared control channel (shared control channel) control channel, and shared channel is usually located at first or second OFDM symbol of 1 subframe, transmits with distributed way.As shown in Figure 2, be an example that utilizes method one control channel.The advantage of this method is to utilize the gain of frequency diversity to come control channel as far as possible, and for the user of distributed transmission, its control signaling is to utilize frequency diversity gain to greatest extent.And for the user of local formula transmission, its user data carries out local formula transmission on the more excellent Resource Block of performance, its control signaling is carried out distributed transmission on shared control channel, because the gain of frequency scheduling is greater than the gain of frequency diversity, the performance of its control signaling of the user of therefore local formula transmission does not reach optimum.Method two is that control signaling (or part of control signaling) is transmitted at same Resource Block with data.That is to say that for distributed transmission, control signaling and data are all carried out distributed transmission distributing on the resource of user data, and for local formula transmission, control signaling and data are all carried out local formula and are transmitted on the more excellent Resource Block of performance.As shown in Figure 3, be an example that utilizes the method two control channel.If the multiplexing employing mode as shown in Figure 1 of local formula and distributed transmission, it is frequency division multiplexing, and local formula transmission and distributed transmission can not be on same Physical Resource Block, and for the user of distributed transmission, the transmission frequency diversity gain of control signaling does not reach optimum so.Therefore, the mode of these two kinds of control channels does not all make the transmission performance of control signaling reach optimum.
Summary of the invention
The transmission method and the equipment that the purpose of this invention is to provide a kind of descending control signaling are so that further optimize the control signaling performance of local formula transmission and distributed transmission correspondence.
For achieving the above object, a kind of transmission method of descending control signaling comprises step:
A) user terminal sends CQI (channel quality indication) report;
B) network sends resource indicating relative control commands at shared control channel to user terminal;
C) to adopt distributed transmission still be local formula transmission by shared control channel or dedicated data channel sends to user terminal and remove the relevant control of the resource indication signaling other and control signalings for network based down user data;
For achieving the above object, a kind of network equipment of descending control signaling transmission comprises:
Radio frequency unit is used for the baseband signal that processor is exported being converted to high-frequency signal and sending, and the high-frequency signal that receives is converted to baseband signal, and sends into processor;
Processor is used for the processing of baseband signal and finishes other controlled function, comprises the control signaling, user data, user data transmission type, control signaling type, multiplexer, and output;
Multiplexer, its data input pin comprise control signaling and user data, and its control input end comprises user data transmission type and control signaling type, and it is output as output.
For achieving the above object, a kind of subscriber terminal equipment of descending control signaling transmission comprises:
Radio frequency unit is used for the baseband signal that processor is exported being converted to high-frequency signal and sending, and the high-frequency signal that receives is converted to baseband signal, and sends into processor;
Processor is used for the processing of baseband signal and finishes other controlled function, comprises control signaling and user data, demodulation multiplexer, user data transmission type, control signaling type, control signaling, user data;
Demodulation multiplexer, its data input pin comprise control signaling and user data, and its control input end comprises user data transmission type and control signaling type, and its output is control signaling and user data;
Display is controlled by processor;
Keyboard is used for inputting user command, and sends into processor.
Description of drawings
Fig. 1 is local formula resource and the multiplexing schematic diagram of distributed resource;
Fig. 2 is a control method for transmitting signaling one in the prior art;
Fig. 3 is a control method for transmitting signaling two in the prior art;
Fig. 4 is a flow chart of the present invention;
Fig. 5 is the network equipment of the present invention;
Fig. 6 is a subscriber terminal equipment of the present invention;
Fig. 7 is the schematic diagram of the embodiment of the invention one;
Fig. 8 is the signaling format one of the embodiment of the invention one;
Fig. 9 is the signaling format two of the embodiment of the invention one;
Figure 10 is the signaling format three of the embodiment of the invention one;
Figure 11 is the schematic diagram of the embodiment of the invention two;
Figure 12 is the signaling format of the embodiment of the invention two;
Figure 13 is the schematic diagram of the embodiment of the invention three;
Figure 14 is the signaling format of the embodiment of the invention three;
Figure 15 is the embodiment of the network equipment of the present invention;
Figure 16 is the embodiment of subscriber terminal equipment of the present invention.
Embodiment
For the L1/L2 control signaling performance that makes local formula transmission and distributed transmission correspondence is further optimized, basic thought of the present invention is that the transmission according to user data is local formula transmission or distributed transmission decides the channel that sends descending control signaling, because local formula transfer of data has been utilized more excellent Physical Resource Block, therefore just more excellent subcarrier transmits, and the part control signaling of its correspondence is transmitted to make the performance of control signaling reach optimum on same Physical Resource Block with data.Transmit for distributed data, according to local formula shown in Figure 1 and distributed resource multiplex mode, the frequency diversity gain of distributed data channel is less than the frequency diversity gain of the shared control channel of distributed transmission, therefore will control signaling and transmit on shared control channel and can have big as far as possible frequency diversity gain.
The present invention includes step:
401 user terminals send CQI (channel quality indication) report;
402 networks send resource indicating relative control commands at shared control channel to user terminal;
403 network based down user datas adopt distributed transmission, and still to be local formula transmission by shared control channel or dedicated data channel send to user terminal removes the relevant control of the resource indication signaling other and control signalings.
Network operation:
At first, network receives CQI (channel quality indication) report.
Network is the distribution that decides the downlink physical resource according to the CQI report that user terminal sends, and the distribution of downlink physical resource is sent to user terminal by shared control channel.Then, network sends resource indicating relative control commands at shared control channel.
Resource indicating relative control commands is used to indicate the distribution condition of physical resource, can comprise user identification code (UE-ID), can also comprise resource allocation (resource assignment), can also comprise the resource continuous time (duration).The shared control channel that sends the resource indication is usually located at the 0th or the 1st OFDM symbol of subframe.The coding of shared control channel can adopt all user's combined codings, also can adopt user grouping, and every group of interior user's combined coding also can adopt each user to encode separately.The quantity of shared control channel can be one, also can be a plurality of.
Then, network based down user data adopts distributed transmission, and still to be local formula transmission send other control signalings of removing the relevant control of the resource indication signaling by shared control channel or dedicated data channel: if user data adopts distributed transmission, remove the resource indication so and be correlated with and control the signaling other and control signalings and send on shared control channel; If user data adopts local formula transmission, other control signalings and the user data except that the relevant control of resource indication signaling sends on same dedicated data channel so.
It still is that local formula transmission can indicate in descending control signaling that user data adopts distributed transmission, a kind of method is that the information with 1 bit is indicated in resource indication signaling, the local formula transmission of 1 expression, 0 expression distributed transmission, perhaps represent local formula transmission, 1 expression distributed transmission with 0; Another kind method is that the number of users of local formula transmission and their user identification code (UE-ID) are adopted in indication, and adopts the number of users of distributed transmission and their user identification code (UE-ID); Another kind method is total number of users of indication and the number of users that adopts local formula transmission, and provide the user's who adopts local formula transmission user identification code (UE-ID) in order and adopt the user's of distributed transmission user identification code (UE-ID), can certainly indicate the number of users of total number of users and employing distributed transmission, and provide the user's who adopts distributed transmission user identification code (UE-ID) in order and adopt the user's of local formula transmission user identification code (UE-ID).
Other control signalings except that the relevant control of resource indication signaling can be every other control signalings except that the relevant control of resource indication signaling, it also can be a part of other control signaling except that the relevant control of resource indication signaling, usually can comprise the control signaling that transformat is relevant, such as modulation system, aerial information, transmission block size, can also comprise the HARQ relevant information, cross program number such as HARQ, redundant version number, or the like.
If user data adopts distributed transmission, other control signalings except that the relevant control of resource indication signaling are transmitted on shared control channel.This shared control channel can be an independently shared control channel of the relevant shared control channel of controlling signaling with transfer resource indication; Also can be that the relevant shared control channel of controlling signaling with the transfer resource indication is same shared control channel, that is to say no matter the relevant signaling of controlling of resource indication still is that other control signalings can be transmitted on same shared control channel.According to the method among the present invention, for distributed transmission, the transmission of control signaling and the transmission of data be not on same physical channel, just not on same Physical Resource Block.
If user data adopts local formula transmission, other control signalings and user data except that the relevant control of resource indication signaling send on same dedicated data channel.The CQI report that network based user terminal is reported is selected more excellent subcarrier allocation to be used for transfer of data to the user, and is indicated in resource indicating relative control commands.Other control signalings except that the relevant control of resource indication signaling are also transmitted in same Physical Resource Block with user data.If user data has been assigned with a plurality of Physical Resource Block, except that the relevant control of resource indication signaling other are controlled signalings and can be distributed on a plurality of Physical Resource Block of distributing to the user so, also can only be distributed on one of them or several Physical Resource Block.
Descending control signaling among the present invention both can comprise the control signaling that is used to control downlink data transmission, also can be included in the control signaling that is used to control transmitting uplink data of downlink transfer, and for example ascending resource distributes, or the like.
User terminal operations:
At first, user terminal sends CQI (channel quality indication) report.User terminal is according to the pilot signal measurement down channel quality, and sends to network.Then, user terminal receives resource indicating relative control commands on shared control channel.Then, user terminal judges that the transmission of its data is to adopt distributed transmission or local formula is transmitted on the shared control channel or receive other control signalings of removing the relevant control of the resource indication signaling on the dedicated data channel: if adopt distributed transmission, user terminal is controlled signalings at other except that resource indicating relative control commands of reception on the shared channel so; If adopt local formula transmission, user terminal is in other control signalings that receive on the dedicated data channel at user data place except that the relevant control of resource indication signaling so.
User terminal judges that the transmission of its data is to adopt distributed transmission or the transmission of local formula: if the network transmitting terminal is indicated distributed transmission or the transmission of local formula according to the method described in the network operation one, promptly the information with 1 bit is indicated in resource indication signaling, the local formula transmission of 1 expression, 0 expression distributed transmission, to receive indication bit be 1 to user terminal so, represent that then this user adopts local formula transmission, if it is 0 that user terminal receives indication bit, represent that then this user adopts distributed transmission, can certainly represent local formula transmission, 1 expression distributed transmission with 0.If it still is local formula transmission that the network transmitting terminal is indicated distributed transmission according to the method two described in the network operation, be that network provides the number of users of the local formula transmission of employing and their user identification code (UE-ID), and the number of users and their user identification code (UE-ID) that adopt distributed transmission, user terminal is at first read the number of users of distributed transmission so, and call over UE-ID according to the number of users of distributed transmission, if detect the UE-ID of oneself, illustrate that this user adopts distributed transmission, user terminal is in other control signalings that receive on the shared control channel except that the relevant control of resource indication signaling so.If do not detect the UE-ID of oneself, then user terminal continues to read the number of users of local formula transmission, and the number of users that transmits according to local formula calls over UE-ID, if detect the UE-ID of oneself, illustrate that this user adopts local formula transmission, user terminal is determined the physical resource position that user data is shared according to the resource indicating relative control commands that receives so, be physics time-frequency lattice, and receive other control signalings except that the relevant control of resource indication signaling on the part time-frequency lattice therein.Read local formula transmission user number conversely earlier, it is also passable to read the distributed transmission number of users again.Certainly, if network provides is total number of users and the number of users that adopts local formula transmission, user terminal can calculate the number of users (being that total number of users deducts the number of users that adopts local formula transmission) that adopts distributed transmission; If what network provided is total number of users and the number of users that adopts distributed transmission, user terminal can calculate the number of users (being that total number of users deducts the number of users that adopts distributed transmission) that adopts local formula transmission.
The network equipment of correspondence of the present invention as shown in Figure 5, comprising:
501 radio frequency units are used for the baseband signal that 502 processors are exported being converted to high-frequency signal and sending, and the high-frequency signal that receives are converted to baseband signal, and send into 502 processors;
502 processors are used for the processing of baseband signal and finish other controlled function, comprise 503 control signalings, 504 user data, 505 user data transmission types, 506 control signaling types, 507 multiplexers, and 508 outputs;
507 multiplexers, its data input pin comprise 503 control signaling and 504 user data, and its control input end comprises 505 user data transmission types and 506 control signaling types, and it is output as 508 outputs.
Novel part of the present invention is that the control end of multiplexer comprises the user data transmission type.When the user data transmission type is a distributed transmission, other except that the relevant control of resource indication signaling are controlled signalings and are sent on shared control channel so; When the user data transmission type is the transmission of local formula, removes the relevant control of the resource indication signaling other so and control signalings and user data and be multiplexed on same dedicated data channel and send.
Corresponding user terminal equipment of the present invention comprises as shown in Figure 6:
601 radio frequency units are used for the baseband signal that 602 processors are exported being converted to high-frequency signal and sending, and the high-frequency signal that receives are converted to baseband signal, and send into 602 processors;
602 processors are used for the processing of baseband signal and finish other controlled function, comprise 603 control signaling and user data, 604 demodulation multiplexers, 605 user data transmission types, 606 control signaling types, 607 control signalings, 608 user data;
604 demodulation multiplexers, its data input pin comprise 603 control signaling and user data, and its control input end comprises 605 user data transmission types and 606 control signaling types, and its output is 607 control signaling and 608 user data;
609 displays are controlled by 602 processors;
610 keyboards are used for inputting user command, and send into 602 processors.
Novel part of the present invention is that the control end of demodulation multiplexer comprises the user data transmission type.When the user data transmission type is a distributed transmission, other control signalings except that the relevant control of resource indication signaling receive on shared control channel so, when the user data transmission type is the transmission of local formula, remove so that the relevant control of the resource indication signaling other are controlled signalings and user data receives on same dedicated data channel.
Embodiment one:
In embodiment one, provide an example of descending L1/L2 control signaling transmission.Fig. 7 represents the control signal multiplex method of this embodiment.
The relevant control signaling of transfer resource indication is transmitted on shared control channel, comprises the relevant control of the transfer resource indication signaling transfer resource indication relevant control signaling corresponding with local formula transmission of distributed transmission correspondence.
For still being that local formula is transmitted on the different channels and transmits according to user data employing distributed transmission except that other control signalings of the relevant signaling of resource indication, user for the The data distributed transmission, its other control signalings except that the relevant signaling of resource indication are transmitted on other shared control channel, and for the user of the local formula transmission of The data, it controls signalings except that other of the relevant signaling of resource indication and user data transmits on same dedicated data channel.
Fig. 8 has provided to realizing a kind of signaling format of this control signal multiplex mode, and wherein the coded system of shared control channel adopts all user's combined codings.
Network adopts the number of users of distributed transmission and the number of users that adopts local formula to transmit in Common Control Channel broadcasting.
Network sends resource indicating relative control commands, comprises user identification code and resource allocation, does not list the resource continuous time among Fig. 8, also can comprise the resource continuous time.Its coded system adopts all user's combined codings, can will adopt the user's of distributed transmission resource indicating relative control commands to carry out cascade, each user's bit number is identical, to adopt the user's of local formula transmission resource indicating relative control commands to carry out cascade then, each user's bit number is identical.Notice that the bit number of distributed resource allocation and local formula resource allocation can be different.Then, relevant control signaling and the local formula resource indicating relative control commands of distributed resource after cascade indication added CRC, carry out chnnel coding again, convolutional encoding for example, pass through rate-matched again, modulation is mapped on the shared control channel then, this shared control channel adopts distributed transmission, thereby reaches the effect of frequency diversity.
Network sends other control signalings except that the relevant signaling of resource indication.
User for the The data distributed transmission, their other control signalings except that the relevant signaling of resource indication are carried out combined coding, carry out cascade earlier, its order is identical with the order of UE-ID, adds CRC then, carry out chnnel coding again, for example convolutional encoding is passed through rate-matched again, modulation, be mapped to then on the shared control channel, this shared control channel adopts distributed transmission.
User for the local formula transmission of The data, network is that user data has distributed physical resource and indicates in resource indicating relative control commands, controls signalings except that other of the relevant signaling of resource indication so and user data transmits on same dedicated data channel.Each user of bit number of other control signalings except that the relevant signaling of resource indication is identical, and will be fixed up in standard.If user data has been assigned with a plurality of Resource Block and the control signaling can have been sent on for first Physical Resource Block of its distribution.
Receive for the user, user terminal is receiving common control channels at first, reads number of users that adopts distributed transmission and the number of users that adopts local formula to transmit.Because each user's bit number is fixed, can calculate total bit number of the relevant control of resource indication signaling, just can determine the channel number of the distributed shared control channel (DSCCH) that the relevant control of transfer resource indication signaling is used.Channelizing about distributed shared control channel is an independently problem.
User terminal receives resource indicating relative control commands on this shared control channel, to the control information bit after the process decoding, number of users according to distributed transmission reads the resource indicating relative control commands that adopts the distributed transmission user, and carry out matching detection with oneself UE-ID, if detect the UE-ID of oneself, illustrate that this user adopts distributed transmission, if do not detect the UE-ID of oneself, then user terminal continues to read the number of users of local formula transmission, and the number of users that transmits according to local formula calls over UE-ID, if detect the UE-ID of oneself, illustrate that this user adopts local formula transmission.
User terminal receives other control signalings except that the relevant signaling of resource indication.
If user terminal is judged its The data distributed transmission, user terminal goes shared control channel to read except that other of the relevant signaling of resource indication and controls signalings so.The shared control channel of other the control signalings of carrying except that the relevant signaling of resource indication can calculate according to the bit number (the distributed transmission number of users multiply by the bit number of each distributed transmission user's other control signalings except that the relevant signaling of resource indication) of carrying.The channel number of this shared control channel can calculate according to the channel number of the bit number of its carrying with the shared control channel of distributing to the relevant control of bearing resource indication signaling.
If user terminal is judged the local formula transmission of its The data, the user reads the information of resource allocation in the relevant signaling of resource indication so, obtain the physical resource that its data are assigned with, and in for first piece in the Physical Resource Block of its distribution, read other control signalings except that the relevant signaling of resource indication.
Fig. 9 has provided to realizing the another kind of signaling format of this control signal multiplex mode, and wherein the coded system of shared channel adopts user grouping, every group of user's combined coding.
Different with signaling format shown in Figure 8 is that the user is divided into groups according to geographical distribution (geometry), can be divided into two groups or three groups usually.In Common Control Channel, send distributed transmission number of users and local formula transmission user number in packet count and every group.With two groups is example.Identical with signaling format shown in Figure 8 for the operation in every group, just the user wants the group at its place of blind check in signaling format shown in Figure 9.Can judge by CRC check.
Figure 10 has provided to realizing the another kind of signaling format of this control signal multiplex mode, and the coded system of wherein carrying the shared channel of other control signalings except that the relevant signaling of resource indication adopts user's absolute coding.
Compare with signaling format shown in Figure 8, different is that each user utilizes independently shared control channel transmission other control signalings except that the relevant signaling of resource indication.This just need be used to indicate the shared control channel of carrying other control signalings except that the relevant signaling of resource indication in the relevant indication bit that begins to add shared control channel of controlling the shared channel of signaling of bearing resource indication.For example there are 16 shared control channels to be used for transmission other control signalings except that the relevant signaling of resource indication, can represent to carry the operating position of the shared control channel of other control signalings except that the relevant signaling of resource indication with 16 bits.The user that 6 distributed transmission are for example arranged, the shared control channel indication bit is 1,000 1,010 1,000 0110, expression according to distributed transmission user's order from front to back, the 0th distributed transmission user is at the 0th shared control channel, the 1st distributed transmission user is at the 4th shared control channel, the 2nd distributed transmission user is at the 6th shared control channel, the 3rd distributed transmission user is at the 8th shared control channel, the 4th distributed transmission user is at the 13rd shared control channel, and the 5th distributed transmission user is at the 14th shared control channel.
Embodiment two:
In embodiment two, provide an example of descending L1/L2 control signaling transmission.Figure 11 represents the control signal multiplex method of this embodiment.
Adopt the user's of local formula transmission resource indicating relative control commands on shared control channel, to transmit.
Adopt the user's of distributed transmission control signaling, comprise that resource indicating relative control commands and except that the relevant signaling of resource indication other control signalings and transmit on other shared control channel.
Adopt the user's of local formula transmission other control signalings and user data except that the relevant signaling of resource indication on same dedicated data channel, to transmit.
Figure 12 has provided to realizing a kind of signaling format of this control signal multiplex mode, and wherein the coded system of shared control channel adopts all user's combined codings.
Network adopts the number of users of distributed transmission and the number of users that adopts local formula to transmit in Common Control Channel broadcasting.
Network sends the user's who adopts local formula transmission resource indicating relative control commands, comprises user identification code and resource allocation, does not list the resource continuous time among Figure 12, also can comprise the resource continuous time.Its coded system adopts user's combined coding of local formula transmission, will adopt the user's of local formula transmission resource indicating relative control commands to carry out cascade, and each user's bit number is identical.Then, the bit after the cascade is added CRC, carry out chnnel coding again, for example convolutional encoding is passed through rate-matched again, and modulation is mapped on the shared control channel then, and this shared control channel adopts distributed transmission, thereby reaches the effect of frequency diversity.
Network send to adopt the user's of distributed transmission control signaling, comprises that resource indicating relative control commands controls signalings with except that the relevant signaling of resource indication other.Adopt the user's of distributed transmission control signaling to carry out cascade each, each user's bit number is identical.Then, the bit after the cascade is added CRC, carry out chnnel coding again, for example convolutional encoding is passed through rate-matched again, and modulation is mapped on the shared control channel then.This shared control channel adopts distributed transmission.
User for the local formula transmission of The data, network is that user data has distributed physical resource and indicates in resource indicating relative control commands, controls signalings except that other of the relevant signaling of resource indication so and user data transmits on same dedicated data channel.Each user of bit number of other control signalings except that the relevant signaling of resource indication is identical, and will be fixed up in standard.If user data has been assigned with a plurality of Resource Block, the control signaling can be sent on for first Physical Resource Block of its distribution.
Receive for the user, user terminal is receiving common control channels at first, reads number of users that adopts distributed transmission and the number of users that adopts local formula to transmit.Because each user's bit number is fixed, can calculate total bit number of the user's who adopts local formula transmission the relevant control of resource indication signaling, just can determine to adopt the user's of local formula transmission the relevant channel number of controlling the distributed shared control channel (DSCCH) of signaling of resource indication.Channelizing about distributed shared control channel is an independently problem.
User terminal receives the user's who adopts local formula transmission resource indicating relative control commands on shared control channel, to the control information bit after the process decoding, number of users according to local formula transmission calls over UE-ID, if detect the UE-ID of oneself, illustrate that this user adopts local formula transmission, the user reads the information of resource allocation in the relevant signaling of resource indication so, obtain the physical resource that its data are assigned with, and in other control signalings that read for first piece in the Physical Resource Block of its distribution except that the relevant signaling of resource indication.If do not detect the UE-ID of oneself, then user terminal calculates total bit number of the user's who adopts distributed transmission control signaling according to the number of users of distributed transmission, thereby just can determine to carry the user's of employing distributed transmission the channel number of distributed shared control channel of control signaling according to total bit number of the user's who adopts distributed transmission control signaling and the relevant channel number of controlling the distributed shared control channel of signaling of resource indication of distributing to the user who adopts local formula transmission.User terminal continues to call over UE-ID according to the number of users of distributed transmission, if detect oneself UE-ID, illustrates that this user adopts distributed transmission, and the while can obtain adopting the user's of distributed transmission control signaling.
Embodiment three:
In embodiment three, provide an example of descending L1/L2 control signaling transmission.Figure 13 represents the control signal multiplex method of this embodiment.
Adopt the transmission of local formula the user resource indicating relative control commands and adopt the user's of distributed transmission control signaling (comprise resource indicating relative control commands control signalings) on shared control channel, to transmit with except that the relevant signaling of resource indication other.
Adopt the user's of local formula transmission other control signalings and user data except that the relevant signaling of resource indication on same dedicated data channel, to transmit.
Figure 14 has provided to realizing a kind of signaling format of this control signal multiplex mode, and wherein the coded system of shared control channel adopts all user's combined codings.
Network adopts the number of users of distributed transmission and the number of users that adopts local formula to transmit in Common Control Channel broadcasting.
Network send to adopt local formula transmission the user resource indicating relative control commands and adopt the user's of distributed transmission control signaling (comprise resource indicating relative control commands control signalings) with except that the relevant signaling of resource indication other, adopt the mode of all user's combined codings, carry out cascade with adopting the user's of local formula transmission resource indicating relative control commands, each user's bit number is identical, carry out cascade with the user's who adopts distributed transmission control signaling again, then, bit after the cascade is added CRC, carry out chnnel coding again, convolutional encoding for example, pass through rate-matched again, modulation, be mapped to then on the shared control channel, this shared control channel adopts distributed transmission, thereby reaches the effect of frequency diversity.
User for the local formula transmission of The data, network is that user data has distributed physical resource and indicates in resource indicating relative control commands, controls signalings except that other of the relevant signaling of resource indication so and user data transmits on same dedicated data channel.Each user of bit number of other control signalings except that the relevant signaling of resource indication is identical, and will be fixed up in standard.If user data has been assigned with a plurality of Resource Block, the control signaling can be sent on for first Physical Resource Block of its distribution.
Receive for the user, user terminal is receiving common control channels at first, reads number of users that adopts distributed transmission and the number of users that adopts local formula to transmit.Because each user's bit number is fixed, can calculate the user's of the local formula transmission of employing the relevant total bit number of controlling signaling and the user's who adopts distributed transmission control signaling of resource indication, just can determine employed shared control channel.
User terminal receives the user's who adopts local formula transmission resource indicating relative control commands and adopts the user's of distributed transmission control signaling on this shared control channel, to the control information bit after the process decoding, number of users according to local formula transmission calls over UE-ID, if detect the UE-ID of oneself, illustrate that this user adopts local formula transmission, the user reads the information of resource allocation in the relevant signaling of resource indication so, obtain the physical resource that its data are assigned with, and in other control signalings that read for first piece in the Physical Resource Block of its distribution except that the relevant signaling of resource indication.If do not detect the UE-ID of oneself, then user terminal continues to call over UE-ID according to the number of users of distributed transmission, if detect the UE-ID of oneself, illustrate that this user adopts distributed transmission, can obtain simultaneously adopting the user's of distributed transmission control signaling.
Embodiment four:
Be an embodiment of the network equipment of the present invention as shown in figure 17.
At transmitting terminal; to pass through chnnel coding/interweave respectively; rate-matched; the data terminal that L1/L2 control signaling after the modulation and user data are sent into multiplexer, multiplexer is subjected to the control of user data transmission type and control signaling type, and the OFDM modulation module is sent in the output of multiplexer; add protection then at interval; again digital signal is carried out mould/number conversion, send into radio frequency sending set then, be sent to antenna at last.
User data transmission type and control signaling type are used to control multiplexer.General, in subframe the 0th, the 1st OFDM symbol is used to transmit pilot tone and part is controlled signaling, and other symbols can pass data and another part control signaling.Be resource indicating relative control commands when controlling signaling type so, then the resource indicating relative control commands of multiplexer is mapped to shared control channel, and is exported by the output of multiplexer.When the control signaling type is other control signalings except that the relevant control of resource indication signaling, decide except that the relevant control of resource indication signaling other to control signaling and data multiplexing modes according to the user data transmission type again, when the user data transmission type is a distributed transmission, other control signalings except that the relevant control of resource indication signaling are mapped to shared control channel, and by the output of the output of multiplexer, when the user data transmission type is local formula transmission, then other control signalings and the user data except that the relevant control of resource indication signaling is multiplexed on the same dedicated data channel, and exported by the output of multiplexer.
Embodiment five:
Be an embodiment of subscriber terminal equipment of the present invention as shown in figure 16.
User terminal is by the radio-frequency transmitter received RF signal; through after mould/number conversion; remove protection at interval; carry out the OFDM demodulation again; then the signal after the OFDM demodulation is sent into the input of demodulation multiplexer; demodulation multiplexer is subjected to the control of user data transmission type and the control of control signaling type; through behind the demultiplexing; the L1/L2 control signaling of the user data of demodulation multiplexer output unmodulated and unmodulated; this two paths of signals is handled respectively, promptly carried out demodulation respectively, the anti-rate coupling; user data and L1/L2 control signaling is exported in channel decoding/deinterleaving respectively.
User data transmission type and control signaling type are used to control demodulation multiplexer.When controlling signaling type is resource indicating relative control commands, and then user terminal receives resource indicating relative control commands and exported by the output of multiplexer on shared control channel.When the control signaling type is other control signalings except that the relevant control of resource indication signaling, decide except that the relevant control of resource indication signaling other to control the demultiplexing mode of signalings and data according to the user data transmission type again, when the user data transmission type is a distributed transmission, the control signaling is correlated with in reception on the shared control channel except that the resource indication other are controlled signalings, and are exported by the output of multiplexer; When the user data transmission type is the transmission of local formula, then demultiplexing removes the relevant control of resource indication on same dedicated data channel
Beyond the signaling other are controlled signaling and user data, and it is exported respectively.
Claims (13)
1. the transmission method of a descending control signaling comprises step:
A) user terminal sends the CQI report;
B) network sends resource indicating relative control commands at shared control channel to user terminal;
C) to adopt distributed transmission still be local formula transmission by shared control channel or dedicated data channel sends to user terminal and remove the relevant control of the resource indication signaling other and control signalings for network based down user data.
2. in accordance with the method for claim 1, it is characterized in that described step c) comprises:
If user data adopts distributed transmission, other control signalings except that the relevant control of resource indication signaling send on shared control channel so.
3. in accordance with the method for claim 1, it is characterized in that described step c) comprises:
If user data adopts local formula transmission, other control signalings and the user data except that the relevant control of resource indication signaling sends on same dedicated data channel so.
4. in accordance with the method for claim 2, it is characterized in that described other shared control channels of controlling the signaling places except that the relevant control of resource indication signaling can be same shared control channels with the shared control channel of the relevant control of transfer resource indication signaling.
5. in accordance with the method for claim 2, it is characterized in that described other shared control channels of controlling the signaling places except that the relevant control of resource indication signaling can be different shared control channels with the shared control channel of the relevant control of transfer resource indication signaling.
6. in accordance with the method for claim 1, it is characterized in that the shared control channel described in step b) and the step c) can adopt all user's combined codings.
7. in accordance with the method for claim 1, it is characterized in that the shared control channel described in step b) and the step c) can adopt the user grouping coding.
8. in accordance with the method for claim 1, it is characterized in that the shared control channel described in step b) and the step c) can adopt user's absolute coding.
9. in accordance with the method for claim 1, it is characterized in that described shared channel is at least one.
10. the network equipment of descending control signaling transmission comprises:
Radio frequency unit is used for the baseband signal that processor is exported being converted to high-frequency signal and sending, and the high-frequency signal that receives is converted to baseband signal, and sends into processor;
Processor is used for the processing of baseband signal and finishes other controlled function, comprises the control signaling, user data, user data transmission type, control signaling type, multiplexer, and output;
Multiplexer, its data input pin comprise control signaling and user data, and its control input end comprises user data transmission type and control signaling type, and it is output as output.
11., it is characterized in that described multiplexer is controlled by the user data transmission type according to the described equipment of claim 10:
When the user data transmission type is a distributed transmission, other except that the relevant control of resource indication signaling are controlled signalings and are sent on shared control channel so;
When the user data transmission type is the transmission of local formula, removes the relevant control of the resource indication signaling other so and control signalings and user data and be multiplexed on same dedicated data channel and send.
12. the subscriber terminal equipment of a descending control signaling transmission comprises:
Radio frequency unit is used for the baseband signal that processor is exported being converted to high-frequency signal and sending, and the high-frequency signal that receives is converted to baseband signal, and sends into processor;
Processor is used for the processing of baseband signal and finishes other controlled function, comprises control signaling and user data, demodulation multiplexer, user data transmission type, control signaling type, control signaling, user data;
Demodulation multiplexer, its data input pin comprise control signaling and user data, and its control input end comprises user data transmission type and control signaling type, and its output is control signaling and user data;
Display is controlled by processor, is used for showing (adding suitable content! );
Keyboard is used for inputting user command, and sends into processor.
13., it is characterized in that described demodulation multiplexer is controlled by the user data transmission type according to the described equipment of claim 12:
When user data employing distributed transmission, other control signalings except that the relevant control of resource indication signaling receive on shared control channel so;
Transmit when user data adopts local formula, other control signalings and the user data except that the relevant control of resource indication signaling receives on same dedicated data channel so.
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| CNA200610073988XA CN101060699A (en) | 2006-04-17 | 2006-04-17 | A downlink control signaling transmission method and equipment |
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