CN103095443A - Method and device for achieving enhanced type physical downlink control channel (PDCCH) - Google Patents
Method and device for achieving enhanced type physical downlink control channel (PDCCH) Download PDFInfo
- Publication number
- CN103095443A CN103095443A CN2011103386062A CN201110338606A CN103095443A CN 103095443 A CN103095443 A CN 103095443A CN 2011103386062 A CN2011103386062 A CN 2011103386062A CN 201110338606 A CN201110338606 A CN 201110338606A CN 103095443 A CN103095443 A CN 103095443A
- Authority
- CN
- China
- Prior art keywords
- pdcch
- frequency resource
- available
- ofdm symbol
- symbol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method and a device for achieving an enhanced type physical downlink control channel (PDCCH). The method and the device are used for increasing capacity of a traditional PDCCH system of a long term evolution (LTE) system. The method for achieving the PDCCH comprises that an available orthogonal frequency division multiplexing (OFDM) symbol value and available frequency resource information of the enhanced type physical downlink control channel (E-PDCCH) used for transmitting control signaling for unified equipment (UE) are determined aiming at the UE of each user terminal; and frequency resources divided for the E-PDCCH are determined in the frequency resources corresponding to the available frequency resource information.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of enhancement mode PDCCH implementation method and equipment.
Background technology
At Long Term Evolution (LTE, Long Time Evolution) in the R8/R9/R10 system, a time tranfer interval (TTI, Transmission Time Internal) to inner, several OFDM (the OFDM in front, Orthogonal Frequency Division Multiplexing) symbol is used for the transmission of Physical Downlink Control Channel (PDCCH, Physical Downlink Control Channel), and the OFDM symbol of back is used for the transmission of data.In tradition LTE system, according to the difference of system configuration, for the larger system of bandwidth (downlink system is greater than 10 Physical Resource Block (PRB, Physical Resource Block)), PDCCH may take 1-3 OFMD symbol; For the less system of bandwidth (downlink system is less than or equal to 10 PRB), take 2-4 OFDM symbol, this is because the number of subcarrier on each OFDM symbol is less, therefore the more symbol of needs carries the control information in PDCCH, and by Physical Control Format Indicator Channel (PCFICH, Physical Control Format Indicator Channel) what OFDM symbols indicating user terminal (UE, User Equipment) PDCCH specifically takies.UE passes through to detect the PCFICH channel information, just can know in the transmission of current time, and PDCCH has taken several OFDM symbols, and transfer of data is from which OFDM sign-on.As shown in Figure 1, in traditional LTE, PDCCH and data channel OFDM symbol take schematic diagram, and wherein, abscissa represents the OFDM value of symbol, and ordinate represents frequency domain resource, and in Fig. 1, PDCCH takies 3 OFDM symbols.
From LTE R8 system, multiple-input and multiple-output (MIMO, Multiple-Input Multiple-Out-put) technology obtains extensive use, especially in LTE R9 and R10 system, multi-user's multiple-input and multiple-output (MU-MIMO, Multi-User-Multiple-Input Multiple-Out-put) technology has been waited until and has been strengthened and optimize, therefore, in LTE R9 and R10 system, the user terminal that works in MU-MIMO will increase greatly, for support a large number of users time transmission, challenge has been proposed for the capacity of PDCCH.Particularly for some novel application scenarioss, for example, a plurality of remote radio (RRH, Remote Radio Head) share identical residential quarter ID, when namely a plurality of RRH were same residential quarter, the capacity of traditional LTE PDCCH of system was limited, can't support a large number of users, the data capacity that this and LTE system are larger does not mate, and therefore, the capacity that how to increase PDCCH becomes one of technical problem that needs to be resolved hurrily in prior art.
Summary of the invention
The embodiment of the present invention provides a kind of enhancement mode PDCCH implementation method and equipment, in order to increase the capacity of PDCCH system of traditional LTE system.
The embodiment of the present invention provides a kind of enhancement mode PDCCH implementation method, comprising:
For each user terminal UE, be identified for available orthogonal frequency division multiplex OFDM value of symbol and available frequency resources information into the enhancement mode Physical Downlink Control Channel E-PDCCH of this UE control channel; And
From frequency resource corresponding to described available frequency resources information, be defined as the frequency resource that described E-PDCCH distributes.
The embodiment of the present invention provides a kind of base station, comprising:
The first determining unit is used for for each user terminal UE, is identified for available orthogonal frequency division multiplex OFDM value of symbol and available frequency resources information into the enhancement mode Physical Downlink Control Channel E-PDCCH of this UE control channel;
The second determining unit is used for from frequency resource corresponding to described available frequency resources information, is defined as the frequency resource that described E-PDCCH distributes.
Enhancement mode PDCCH implementation method and equipment that the embodiment of the present invention provides, the base station is for each UE, be defined as available OFDM value of symbol and the usable frequency information of the E-PDCCH of this UE control channel, and be defined as the frequency resource that this E-PDCCH distributes from frequency resource corresponding to usable frequency information, like this, the base station can E-PDCCH can with OFDM symbol corresponding to OFDM value of symbol and the running time-frequency resource jointly determined of the frequency resource determined on to UE transmission E-PDCCH, thereby increased the capacity of traditional LTE PDCCH of system.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Description of drawings
Fig. 1 is in prior art, and in traditional LTE, PDCCH and data channel OFDM symbol take schematic diagram;
Fig. 2 a is in the embodiment of the present invention, a kind of possible E-PDCCH resource occupation schematic diagram;
Fig. 2 b is in the embodiment of the present invention, the E-PDCCH resource occupation schematic diagram of another possibility;
Fig. 3 is in the embodiment of the present invention, the implementing procedure schematic diagram of enhancement mode PDCCH implementation method base station side;
Fig. 4 is in the embodiment of the present invention, the resource occupation schematic diagram when PDCCH conflicts with the OFDM that E-PDCCH can use;
Fig. 5 is in the embodiment of the present invention, and the base station is defined as the implementing procedure schematic diagram of the frequency resource of this UE distribution;
Fig. 6 is in the embodiment of the present invention, the implementing procedure schematic diagram of enhancement mode PDCCH implementation method UE side;
Fig. 7 is in the embodiment of the present invention, the structural representation of base station;
Fig. 8 is in the embodiment of the present invention, the structural representation of mobile terminal.
Embodiment
In order to increase the capacity of PDCCH system of traditional LTE system, provide a kind of enhancement mode PDCCH implementation method and equipment in the embodiment of the present invention.
Below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein only is used for description and interpretation the present invention, be not intended to limit the present invention, and in the situation that do not conflict, embodiment and the feature in embodiment in the present invention can make up mutually.
A kind of enhancement mode PDCCH (E-PDCCH) is provided in the embodiment of the present invention, its basic thought is that E-PDCCH is placed on the information of control channel on the Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel) of LTE R8/R9/R10 system and transmits.As shown in Fig. 2 a, be a kind of possible E-PDCCH resource occupation schematic diagram, wherein, abscissa represents the OFDM value of symbol, ordinate represents frequency domain resource, and in Fig. 2 a, E-PDCCH takies the component frequency resource on the individual OFDM symbol of (k+3)～(k+13); As shown in Fig. 2 b, E-PDCCH resource occupation schematic diagram for another possibility, wherein, abscissa represents the OFDM value of symbol, ordinate represents frequency domain resource, and in Fig. 2 b, E-PDCCH takies the component frequency resource on the individual OFDM symbol of (k+3)～(k+13), wherein, the zones of different of dash area division represents respectively the E-PDCCH of different UEs.
Based on above-mentioned design philosophy, the embodiment of the present invention provides a kind of enhancement mode PDCCH implementation method and equipment, in order to increase the capacity of traditional LTE PDCCH of system.
As shown in Figure 3, the implementing procedure schematic diagram of the PDCCH base station side implementation method that provides for the embodiment of the present invention comprises the following steps:
S301, for each UE, be identified for available OFDM value of symbol and available frequency resources information into the enhancement mode Physical Downlink Control Channel E-PDCCH of this UE control channel;
S302, from frequency resource corresponding to this available frequency resources information, be defined as the frequency resource that this E-PDCCH distributes.
In concrete enforcement, by said process, the time-frequency position that the E-PDCCH into each UE distributes just can be determined in the base station, and after the time-frequency position of determining, can also comprise the following steps:
Send resource to UE and distribute indication information, this resource is distributed available OFDM value of symbol and the available frequency resources information that comprises E-PDCCH in indication information;
Indication UE carries out E-PDCCH and detects on the available OFDM value of symbol of E-PDCCH and running time-frequency resource corresponding to available frequency resources information.
Concrete, the base station distributes indication information can comprise two-part content in the resource that sends to this mobile terminal, part content is used to indicate the available OFDM value of symbol of the E-PDCCH of UE, namely the E-PDCCH of this UE may take those OFDM symbols in a TTI, for convenience of description, OFDM symbol corresponding to available OFDM value of symbol with the E-PDCCH of UE below is designated as Oset; Part content is used to indicate the available frequency resources of the E-PDCCH of UE, the i.e. E-PDCCH of this UE carrier wave/carrier wave set that may take/PRB (Physical Resource Block) etc., wherein, a PRB can be divided into a plurality of carrier wave set, for convenience of description, below frequency resource corresponding to available frequency resources information of the E-PDCCH of UE is designated as Fset, and followingly describe as an example of carrier wave example.In Fig. 2 a, Oset={ (k+3), (k+4) ... (k+13) }, Fset={ carrier wave f
8, carrier wave f
15, carrier wave f
16, carrier wave f
17.
In concrete enforcement, because UE is indicated by PCFICH in the base station, OFDM symbol and frequency resource that the PDCCH of this UE may take, as shown in Figure 4, the OFDM value of symbol that the PDCCH of UE may take is k, k+1, k+2, the frequency resource that may take is carrier wave f
1～carrier wave f
17, and the OFDM value of symbol that the E-PDCCH of UE may take is k+2, and k+3, k+4 ..., k+13, the frequency resource that the E-PDCCH of UE may take is carrier wave f
15～carrier wave f
17, this shows, the OFDM symbol that the PDCCH of UE may take exists with the OFDM symbol that the E-PDCCH of UE may take and conflicts.At this moment, in the embodiment of the present invention, can solve in the following manner:
Mode one
The base station guarantees that by the mode of scheduling there are not conflict in the PDCCH of all UE and the OFDM symbol that E-PDCCH may take.This be because, the subframe that PDCCH can take is that variable (subframe is the running time-frequency resource that each OFDM symbol and each carrier wave are determined, can be understood as each grid in Fig. 4), so the base station is when the PDCCH that determines each UE and E-PDCCH, the carrier wave that its ODFM value of symbol can be set and take is all different, thereby makes both not conflicts.
Based on above-mentioned analysis, preferably, the enhancement mode PDCCH implementation method that the embodiment of the present invention provides can also comprise the following steps:
Sending to UE before resource distributes indication information, determining the available OFDM symbol of E-PDCCH and PDCCH and conflict for the frequency resource of E-PDCCH and PDCCH distribution does not exist.
Mode two
The base station determines that E-PDCCH and the available OFDM symbol of PDCCH exist when conflicting, E-PDCCH is transmitted in the base station on the OFDM symbol that may do not taken by PDCCH, for example, the scene that clashes in Fig. 4, the base station is the carrier wave f on the OFDM symbol of (k+3)～(k+13) at value of symbol
15～carrier wave f
17Transmission E-PDCCH, simultaneously, it is carrier wave f on the OFDM symbol of (k+3)～(k+13) that indication UE only needs at value of symbol
15～carrier wave f
17On carry out E-PDCCH and detect.
Based on above-mentioned analysis, preferably, the enhancement mode PDCCH implementation method that the embodiment of the present invention provides can also comprise the following steps:
The available OFDM symbol of determining E-PDCCH and PDCCH exists when conflicting, and in the available OFDM symbol of E-PDCCH, selects the available OFDM symbol OFDM symbol transmission E-PDCCH in addition of PDCCH.Even the available OFDM assemble of symbol of PDCCH is A, the available OFDM assemble of symbol of E-PDCCH is B, the common factor of A and B is C, set C is the part of conflicting of E-PDCCH and the available OFDM symbol of PDCCH, in the embodiment of the present invention, select OFDM symbol transmission E-PDCCH in set (B-C).
Mode three
The base station determines that E-PDCCH and the available OFDM symbol of PDCCH exist when conflicting, and the base station is not to UE transmission E-PDCCH.
Based on this, the enhancement mode PDCCH implementation method that the embodiment of the present invention provides can also comprise the following steps:
Determine that E-PDCCH and the available OFDM symbol of PDCCH exist when conflicting, and do not transmit E-PDCCH.
Especially, in concrete enforcement, if determine that E-PDCCH and the available OFDM symbol of PDCCH exist when conflicting, can also not consider conflict, transmit E-PDCCH on the available OFDM symbol of E-PDCCH.Even the available OFDM assemble of symbol of PDCCH is A, the available OFDM assemble of symbol of E-PDCCH is B, and the common factor of A and B is C, and set C is the part of conflicting of E-PDCCH and the available OFDM symbol of PDCCH, in the embodiment of the present invention, select OFDM symbol transmission E-PDCCH in set B.
In the embodiment of the present invention, in step S302, can be defined as the frequency resource that E-PDCCH distributes according to following process.As shown in Figure 5, for each UE, the base station is defined as the implementing procedure schematic diagram of the frequency resource of this UE distribution, comprises the following steps:
S501, frequency resource that available frequency resources information is corresponding are divided into a plurality of frequency resource set according to preset rules;
S502, according to system message, and/or CQI (channel quality indication) information of UE feedback, frequency resource set of selection from the frequency resource set that marks off;
In concrete enforcement, the base station can be according to CQI information or the system information of UE feedback, can also select a frequency resource set from the frequency resource set that marks off in conjunction with CQI information and the system information of UE feedback, wherein, system information can be the schedule information of base station, the take situation etc. of other UE to frequency resource.
S503, the frequency resource of the frequency resource set-inclusion selected is defined as the frequency resource of distributing into E-PDCCH.
Concrete, in Fset, the base unit of frequency resource can be carrier wave, can be carrier wave set, can also be for PRB etc.Base unit take frequency resource in this example describes as carrier wave as example.To comprise carrier wave f in Fset
1, f
2, f
3, f
4, f
5..., f
18, select the frequency resource subclass of the E-PDCCH of K carrier wave composition from Fset, be designated as S_K_1, K is called the degree of polymerization of frequency resource, take K=3 as example, from f
1Beginning selects 3 carrier waves as carrier frequency subclass, i.e. a S_3_1={f successively
1, f
2, f
3, adopt similar method, the carrier wave that comprises in Fset is divided, can access remaining carrier frequency subclass, be respectively S_3_2={f
4, f
5, f
6, S_3_3={f
7, f
8, f
9, S_3_4={f
10, f
11, f
12, S_3_5={f
13, f
14, f
15, S_3_6={f
16, f
17, f
18.Represent with Lset_K_M the frequency resource set that UE can use, wherein K is the degree of polymerization of frequency resource, M be the frequency resource set-inclusion subset and quantity, the base station can be to K, M is configured, Lset_3_6={S_3_1, S_3_2, S_3_3, S_3_4, S_3_5, S_3_6}.For each UE, the incompatible transmission of frequency resource subset can according to the information such as CQI of this UE feedback, be selected in the base station from Lset_3_6 when the carrier wave that the E-PDCCH that determines this UE distributes.For example, select S_3_1, namely at carrier wave f
1, f
2, f
3To this UE transmission E-PDCCH.
So far, the base station has been determined to transmit for UE the frequency resource of E-PDCCH, can transmit the available OFDM value of symbol of E-PDCCH to UE in conjunction with the base station, just can determine to transmit to UE the running time-frequency resource of E-PDCCH.
During concrete enforcement, for each UE, the base station will for the control signal of this UE transmission through after processing, can be transmitted control signal according to following principle on the running time-frequency resource of determining:
On step 1, first OFDM symbol in Oset (according to the time order and function sequence), distribute successively control signal at the frequency domain position of determining;
For example, on (k+2) the individual OFDM symbol in Fig. 4, at carrier wave f
1, f
2, f
3On distribute successively control signal.
On step 2, second OFDM symbol in Oset (according to the time order and function sequence), distribute successively remaining control signal at the frequency domain position of determining;
Namely on (k+3) the individual OFDM symbol in Fig. 4, at carrier wave f
1, f
2, f
3On distribute successively control signal.
According to the method described above, on each available OFDM symbol, distribute successively remaining control signal at the frequency domain position of determining, until assign successively.
Based on this, the enhancement mode PDCCH implementation method that the embodiment of the present invention provides can also comprise step:
Select successively an OFDM symbol according to time sequencing;
On the OFDM symbol of selecting, distribute control signal in the position that the frequency resource of the frequency resource set-inclusion of selecting is corresponding.
Especially, in said process, if some resource particle (RE, Resource Element) positions need to send reference signal (RS, Refrence Signal), control signal is not distributed in this RE position.
Based on same inventive concept, another base station also is provided in the embodiment of the present invention, because the principle of dealing with problems in this base station is similar to above-mentioned enhancement mode PDCCH implementation method, so the enforcement of this base station can referring to the enforcement of above-mentioned enhancement mode PDCCH implementation method, repeat part and repeat no more.
As shown in Figure 6, the implementing procedure schematic diagram of the enhancement mode PDCCH implementation method UE side that provides for the embodiment of the present invention comprises the following steps:
S601, UE receive the resource distribution indication information that the base station sends, and this resource is distributed OFDM value of symbol and the frequency resource information that comprises in indication information for the E-PDCCH of control channel;
S602, UE carry out the E-PDCCH detection at available OFDM value of symbol and running time-frequency resource corresponding to frequency resource information of E-PDCCH.
Preferably, UE can also comprise the following steps before the available OFDM value of symbol of E-PDCCH and position probing E-PDCCH corresponding to frequency resource information:
UE determines that E-PDCCH does not exist with the available OFDM value of symbol of PDCCH and conflicts.
Preferably, when UE determines that the available OFDM value of symbol existence of E-PDCCH and PDCCH conflicts, can process in such a way:
Processing mode one
If UE determines resource and distributes available OFDM symbol and the available OFDM symbol of the PDCCH of PCFICH indication of the E-PDCCH of indication information indicating to exist when conflicting, think the detection mistake, do not carry out the E-PDCCH detection.
Based on this, the implementing procedure of enhancement mode PDCCH implementation method UE side can also comprise the following steps: the available OFDM symbol that UE really states E-PDCCH and PDCCH exists when conflict, does not carry out the E-PDCCH detection.
Processing mode two
When if UE determines that resource distributes the available OFDM symbol of the E-PDCCH of indication information indicating to conflict with the available OFDM symbol existence of the PDCCH of PCFICH indication, available OFDM symbol and the frequency resource information of distributing the E-PDCCH of indication information indicating according to resource are carried out E-PDCCH and are detected on the time-frequency position of correspondence.
Based on this, the implementing procedure of enhancement mode PDCCH implementation method UE side can also comprise the following steps: UE determines that E-PDCCH and the available OFDM symbol of PDCCH exist when conflicting, and distributes indication information according to resource, carries out E-PDCCH and detects.
As shown in Figure 7, the structural representation of the base station that provides for the embodiment of the present invention comprises:
The first determining unit 701 is used for for each user terminal UE, is identified for available OFDM value of symbol and available frequency resources information into the E-PDCCH of this UE control channel;
The second determining unit is used for from frequency resource corresponding to available frequency resources information, is defined as the frequency resource that this E-PDCCH distributes.
Preferably, the second determining unit 702 can comprise:
Divide subelement, be used for the frequency resource that available frequency resources information is corresponding, be divided into a plurality of frequency resource set according to preset rules;
The chooser unit is used for according to system information, and/or the channel quality indicator CQI information of UE feedback, selects a frequency resource set from the frequency resource set;
Determine subelement, the frequency resource that is used for frequency resource set-inclusion that the chooser unit is selected is defined as the frequency resource of distributing into E-PDCCH.
In concrete enforcement, the base station that the embodiment of the present invention provides can also comprise:
Selected cell is used for selecting successively an OFDM symbol according to time sequencing;
Allocation units are used at the OFDM symbol of selecting, and distribute control signal in the position that the frequency resource of the frequency resource set-inclusion of selecting is corresponding.
In concrete enforcement, the base station that the embodiment of the present invention provides can also comprise:
Transmitting element is used for sending resource to UE and distributes indication information, and this resource is distributed available OFDM value of symbol and the available frequency resources information that comprises described E-PDCCH in indication information;
Indicating member is used to indicate UE and carries out E-PDCCH detect on the available OFDM value of symbol of E-PDCCH and running time-frequency resource corresponding to available frequency resources information.
In concrete enforcement, the base station that the embodiment of the present invention provides can also comprise:
The 3rd determining unit is used for sending to UE before resource distributes indication information, determines the available OFDM symbol of E-PDCCH and PDCCH and conflicts for the frequency resource of this E-PDCCH and PDCCH distribution does not exist.
In concrete enforcement, the base station that the embodiment of the present invention provides can also comprise:
Processing unit is used for determining that the available OFDM symbol of E-PDCCH and PDCCH exists when conflicting, and in the available OFDM symbol of E-PDCCH, selects the available OFDM symbol OFDM symbol transmission E-PDCCH in addition of PDCCH; Be used for perhaps determining that E-PDCCH and the available OFDM symbol of PDCCH exist when conflicting, do not transmit E-PDCCH; Determine that E-PDCCH and the available OFDM symbol of PDCCH exist when conflicting, and transmit E-PDCCH on the available OFDM symbol of described E-PDCCH.
As shown in Figure 8, the structural representation of the mobile terminal that provides for the embodiment of the present invention comprises:
Receiving element 801 is used for receiving the resource distribution indication information that the base station sends, and this resource is distributed OFDM value of symbol and the available frequency resources information that comprises in indication information for the E-PDCCH of control channel;
Detecting unit 802 is used for carrying out the E-PDCCH detection at available OFDM value of symbol and running time-frequency resource corresponding to available frequency resources information of E-PDCCH.
In concrete enforcement, the mobile terminal that the embodiment of the present invention provides can also comprise:
Determining unit is used for carrying out before E-PDCCH detects at the available OFDM value of symbol of E-PDCCH and running time-frequency resource corresponding to available frequency resources information, determines that E-PDCCH does not exist with the available OFDM symbol of PDCCH to conflict.
In concrete enforcement, the mobile terminal that the embodiment of the present invention provides can also comprise:
Processing unit is used for not carrying out E-PDCCH and detecting when the available OFDM symbol existence of determining E-PDCCH and PDCCH conflicts; Perhaps be used for distributing indication information according to resource when the available OFDM symbol existence of determining E-PDCCH and PDCCH conflicts, carry out E-PDCCH and detect.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect fully.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the present invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of realizing in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby be provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction of carrying out on computer or other programmable devices.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Enhancement mode PDCCH implementation method and equipment that the embodiment of the present invention provides, the base station is for each UE, be defined as available OFDM value of symbol and the usable frequency information of the E-PDCCH of this UE control channel, and be defined as the frequency resource that this E-PDCCH distributes from frequency resource corresponding to usable frequency information, like this, the base station can E-PDCCH can with OFDM symbol corresponding to OFDM value of symbol and the running time-frequency resource jointly determined of the frequency resource determined on to UE transmission E-PDCCH, thereby increased the capacity of traditional LTE PDCCH of system.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. an enhancement mode PDCCH implementation method, is characterized in that, comprising:
For each user terminal UE, be identified for available orthogonal frequency division multiplex OFDM value of symbol and available frequency resources information into the enhancement mode Physical Downlink Control Channel E-PDCCH of this UE control channel; And
From frequency resource corresponding to described available frequency resources information, be defined as the frequency resource that described E-PDCCH distributes.
2. the method for claim 1, is characterized in that, also comprises:
Before being defined as the frequency resource that described E-PDCCH distributes, determining the available OFDM symbol of described E-PDCCH and physical downlink control channel PDCCH and conflict for the frequency resource of described E-PDCCH and PDCCH distribution does not exist.
3. the method for claim 1, is characterized in that, also comprises:
Before the frequency resource that is defined as described E-PDCCH distribution, determine that E-PDCCH and the available OFDM symbol of PDCCH exist when conflicting, in the available OFDM symbol of described E-PDCCH, select the available OFDM symbol OFDM symbol transmission E-PDCCH in addition of PDCCH; Perhaps
Before the frequency resource that is defined as described E-PDCCH distribution, determine that the available OFDM symbol of E-PDCCH and PDCCH exists when conflicting, do not transmit E-PDCCH; Perhaps
Before the frequency resource that is defined as described E-PDCCH distribution, determine that the available OFDM symbol of E-PDCCH and PDCCH exists when conflicting, transmit E-PDCCH on the available OFDM symbol of described E-PDCCH.
4. the method for claim 1, is characterized in that, from frequency resource corresponding to described available frequency resources information, is defined as the frequency resource that described E-PDCCH distributes, and specifically comprises:
With frequency resource corresponding to described available frequency resources information, be divided into a plurality of frequency resource set according to preset rules;
According to system information, and/or the channel quality indicator CQI information of described UE feedback, a frequency resource set selected from the frequency resource set that marks off;
The frequency resource of the frequency resource set-inclusion selected is defined as the frequency resource of distributing into described E-PDCCH.
5. method as claimed in claim 4, is characterized in that, also comprises:
Select successively an OFDM symbol according to time sequencing;
On the OFDM symbol of selecting, be the described control signal of position distribution corresponding to frequency resource that described E-PDCCH distributes.
6. the described method of claim as arbitrary in claim 1～5, is characterized in that, also comprises:
Send resource to described UE and distribute indication information, described resource is distributed available OFDM value of symbol and the available frequency resources information that comprises described E-PDCCH in indication information;
Indicating described UE to carry out E-PDCCH on the available OFDM value of symbol of E-PDCCH and running time-frequency resource corresponding to available frequency resources information detects.
7. a base station, is characterized in that, comprising:
The first determining unit is used for for each user terminal UE, is identified for available orthogonal frequency division multiplex OFDM value of symbol and available frequency resources information into the enhancement mode Physical Downlink Control Channel E-PDCCH of this UE control channel;
The second determining unit is used for from frequency resource corresponding to described available frequency resources information, is defined as the frequency resource that described E-PDCCH distributes.
8. base station as claimed in claim 7, is characterized in that, also comprises:
The 3rd determining unit was used for before being defined as the frequency resource that described E-PDCCH distributes, and determined the available OFDM symbol of described E-PDCCH and physical downlink control channel PDCCH and conflicted for the frequency resource of described E-PDCCH and PDCCH distribution does not exist.
9. base station as claimed in claim 7, is characterized in that, also comprises:
Processing unit, be used for before the frequency resource that is defined as described E-PDCCH distribution, the available OFDM value of symbol of determining E-PDCCH and PDCCH exists when conflicting, and in the available OFDM symbol of described E-PDCCH, selects the available OFDM symbol OFDM symbol transmission E-PDCCH in addition of PDCCH; Determine that perhaps E-PDCCH and the available OFDM value of symbol of PDCCH exist when conflicting, and do not transmit E-PDCCH; Determine that perhaps E-PDCCH and the available OFDM symbol of PDCCH exist when conflicting, and transmit E-PDCCH on the available OFDM symbol of described E-PDCCH.
10. base station as claimed in claim 7, is characterized in that, described the second determining unit comprises:
Divide subelement, be used for frequency resource corresponding to described available frequency resources information, be divided into a plurality of frequency resource set according to preset rules;
The chooser unit is used for according to system information, and/or the channel quality indicator CQI information of described UE feedback, selects a frequency resource set from the frequency resource set that marks off;
Determine subelement, the frequency resource that is used for the frequency resource set-inclusion that will select is defined as the frequency resource of distributing into described E-PDCCH.
11. base station as claimed in claim 10 is characterized in that, also comprises:
Selected cell is used for selecting successively an OFDM symbol according to time sequencing;
Allocation units are used at the OFDM symbol of selecting, and are being the described control signal of position distribution corresponding to frequency resource that described E-PDCCH distributes.
12. the described base station of claim as arbitrary in claim 7～11 is characterized in that, also comprises:
Transmitting element is used for sending resource to described UE and distributes indication information, and described resource is distributed available OFDM value of symbol and the available frequency resources information that comprises described E-PDCCH in indication information;
Indicating member is used to indicate described UE and carries out E-PDCCH detect on the available OFDM value of symbol of E-PDCCH and running time-frequency resource corresponding to available frequency resources information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338606.2A CN103095443B (en) | 2011-10-31 | 2011-10-31 | Enhancement mode PDCCH implementation method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338606.2A CN103095443B (en) | 2011-10-31 | 2011-10-31 | Enhancement mode PDCCH implementation method and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103095443A true CN103095443A (en) | 2013-05-08 |
| CN103095443B CN103095443B (en) | 2015-10-07 |
Family
ID=48207610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110338606.2A Active CN103095443B (en) | 2011-10-31 | 2011-10-31 | Enhancement mode PDCCH implementation method and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103095443B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107409114A (en) * | 2015-01-16 | 2017-11-28 | 夏普株式会社 | User equipment, base station and method |
| CN108811052A (en) * | 2017-04-28 | 2018-11-13 | 电信科学技术研究院 | A kind of down control channel detection method of reseptance, terminal and network side equipment |
| WO2020156223A1 (en) * | 2019-01-31 | 2020-08-06 | 华为技术有限公司 | Signal transmission method, signal receiving method, and related apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170703A (en) * | 2011-05-11 | 2011-08-31 | 电信科学技术研究院 | Method for receiving and transmitting information on physical downlink control channel and equipment thereof |
-
2011
- 2011-10-31 CN CN201110338606.2A patent/CN103095443B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170703A (en) * | 2011-05-11 | 2011-08-31 | 电信科学技术研究院 | Method for receiving and transmitting information on physical downlink control channel and equipment thereof |
Non-Patent Citations (3)
| Title |
|---|
| CMCC: "Application scenario for introducing enhanced PDCCH in Rel-11", 《3GPP TSG-RAN WG1 #66》, 26 August 2011 (2011-08-26) * |
| HUAWEI等: "Investigation on downlink control channel and signalling enhancements", 《3GPP TSG RAN WG1#66》, 26 August 2011 (2011-08-26) * |
| RESEARCH IN MOTION等: "Design Consideration for E-PDCCH", 《3GPP TSG RAN WG1#66》, 26 August 2011 (2011-08-26) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107409114A (en) * | 2015-01-16 | 2017-11-28 | 夏普株式会社 | User equipment, base station and method |
| CN107409114B (en) * | 2015-01-16 | 2021-06-29 | 夏普株式会社 | User equipment, base station and method |
| CN108811052A (en) * | 2017-04-28 | 2018-11-13 | 电信科学技术研究院 | A kind of down control channel detection method of reseptance, terminal and network side equipment |
| CN108811052B (en) * | 2017-04-28 | 2021-05-14 | 电信科学技术研究院 | Downlink control channel detection receiving method, terminal and network side equipment |
| US11206651B2 (en) | 2017-04-28 | 2021-12-21 | Datang Mobile Communications Equipment Co., Ltd. | Method for detecting and receiving downlink control channel, user equipment and network side device |
| WO2020156223A1 (en) * | 2019-01-31 | 2020-08-06 | 华为技术有限公司 | Signal transmission method, signal receiving method, and related apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103095443B (en) | 2015-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10917883B2 (en) | Control information sending method, receiving method, and device | |
| CN113824544B (en) | Reference signal, message transmission method, transmission resource determination method and device | |
| CN110582952B (en) | Method, apparatus and system for transmitting and receiving control channel in wireless communication system | |
| KR102578527B1 (en) | Methods and devices for transmitting and receiving information | |
| JP2024010104A (en) | Method and device for transmitting and receiving control signaling as well as method for determining information | |
| JP6055844B2 (en) | Control channel transmission / reception method, base station, and user apparatus | |
| US10985886B2 (en) | Downlink channel decoding method, downlink information transmission method, user equipment, and base station | |
| CN102611524B (en) | Method, system and equipment for information transmission | |
| KR102033442B1 (en) | Method and apparatus for blindly detecting a common search space and a ue specific search space | |
| US11239980B2 (en) | Method and apparatus for transmitting physical uplink shared | |
| CN108111281B (en) | Data channel parameter configuration method and device | |
| US9398581B2 (en) | Method and device for transmitting downlink control information | |
| CN105490791B (en) | SRS signal sending and triggering method, device, user equipment and base station | |
| KR101767021B1 (en) | Mapping method and apparatus for a search space of a physical downlink control channel | |
| KR102248027B1 (en) | Method and apparatus for sending downlink control information (dci) | |
| CA2843237C (en) | Methods and apparatuses for receiving and sending control channel | |
| JP2013510475A (en) | Sounding reference signal signaling arrangement system and method | |
| WO2016119684A1 (en) | Data transmission method and station | |
| EP2806680A1 (en) | Method, base station, and user equipment for transmitting control channel resources | |
| CN110324898B (en) | Physical downlink shared channel receiving and time domain resource indicating method, device, storage medium, base station and terminal | |
| CN106793097B (en) | The control method of user equipment, network side equipment and user equipment | |
| CN103096477B (en) | Enhancement mode PDCCH implementation method and relevant device | |
| CN104065605A (en) | Communication method and communication device on new carrier-type carrier | |
| CN104009827A (en) | Transmission method for UE special-purpose demodulation reference signal and devices | |
| CN103095443B (en) | Enhancement mode PDCCH implementation method and equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |