CN102869049A - Method for transmitting control channel indication information, base station and user equipment - Google Patents
Method for transmitting control channel indication information, base station and user equipment Download PDFInfo
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- CN102869049A CN102869049A CN201110184991XA CN201110184991A CN102869049A CN 102869049 A CN102869049 A CN 102869049A CN 201110184991X A CN201110184991X A CN 201110184991XA CN 201110184991 A CN201110184991 A CN 201110184991A CN 102869049 A CN102869049 A CN 102869049A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention discloses a method for transmitting control channel indication information, a base station and user equipment. The method comprises the following steps of: determining a format of an extended physical downlink control channel (E-PDCCH), wherein the format of the E-PDCCH comprises a resource allocation and/or transmission mode of the E-PDCCH; and transmitting E-PDCCH indication information to user equipment on resources mapped by at least one control channel element (CCE) of a physical downlink control channel (PDCCH), wherein the E-PDCCH indication information is used for indicating the format of the E-PDCCH. The base station comprises a determination module and a transmission module. The user equipment comprises a receiving module and a determination module. The method, the base station and the user equipment of the embodiment of the invention can be used to dynamically transmit the E-PDCCH indication information, thereby enhancing the resource utilization efficiency of a system and a transmission performance of the E-PDCCH.
Description
Technical field
The present invention relates to the communications field, particularly the method for transmitting control channel indication information, base station and subscriber equipment in the communications field.
Background technology
At third generation partner program (The 3rd Generation Partnership Project, referred to as " 3GPP ") Long Term Evolution (Long Term Evolution, referred to as " LTE ") in the communication system, running time-frequency resource in each descending sub frame is divided into two zones: a zone is used for Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as " PDCCH ") transmission, be called the PDCCH zone, another zone is used for Physical Downlink Shared Channel (Physical Downlink Shared Channel, referred to as " PDSCH ") transmission, be called the PDSCH zone.
PDCCH and PDSCH take time division multiplexing mode multiplexing in a descending sub frame, in this descending sub frame, PDCCH takies top n OFDM (Orthogonal Frequency Division Multiplexing, referred to as " OFDM ") symbol, wherein N is less than or equal to 3, PDSCH and then takies remaining OFDM symbol.Namely the number of subframe PDCCH that can support is limited, thereby the capacity of PDCCH has directly limited the simultaneously number of scheduling user's set of base station.
For higher spectrum efficiency and community marginal user performance is provided, (Release 11 at the 11st version of LTE, referred to as " R11 ") communication system in, introduced cooperative multipoint transmission (Coordinated Multi-Point Transmission, referred to as " CoMP ") technology, and multi-user's multiple-input and multiple-output (Multiple User-Multiple Input Multiple Output more flexibly, referred to as " MU-MIMO ") scheduling mechanism, thus so that the quantity of the subscriber equipment that dispatch simultaneously the base station significantly increase.Thereby the PDCCH of maximum 3 OFDM symbols can't satisfy the demand of the communication system of R11 among the LTE.
In order to solve the capacity problem of PDCCH, a kind of feasible method is the resource of expansion PDCCH, namely mark off a part of resource in original PDSCH zone, the PDCCH that is used for transmitting extended, namely expand Physical Downlink Control Channel (Extended Physical Downlink Control Channel is referred to as " E-PDCCH ").The resource of distributing to like this control channel just has very large flexibility ratio, and the capacity of PDCCH has obtained increase.
Because the subscriber equipment that is scheduled on each subframe is dynamic change, thereby the level of resources utilization and transmission performance in order to guarantee E-PDCCH, the form of the E-PDCCH of the actual use in base station also can change according to actual needs, and tell subscriber equipment by the E-PDCCH indication information, the form of E-PDCCH is such as comprising resource location and transmission means etc.Therefore, how dynamically transmitting the E-PDCCH indication information is to need the further technical problem of solution.
Summary of the invention
The embodiment of the invention provides a kind of method, base station and subscriber equipment of transmitting control channel indication information, can dynamically transmit the E-PDCCH indication information, thereby can improve the level of resources utilization of system and the transmission performance of E-PDCCH.
On the one hand, the embodiment of the invention provides a kind of method of transmitting control channel indication information, and the method comprises: determine the form of expansion Physical Downlink Control Channel E-PDCCH, the form of this E-PDCCH comprises resource distribution and/or the transmission means of this E-PDCCH; On the resource that at least one control channel unit CCE of physical downlink control channel PDCCH shines upon, to user device transmissions E-PDCCH indication information, this E-PDCCH indication information is used to indicate the form of this E-PDCCH.
On the other hand, the embodiment of the invention provides a kind of method of transmitting control channel indication information, the method comprises: on the resource that at least one control channel unit CCE of physical downlink control channel PDCCH shines upon, receive the expansion Physical Downlink Control Channel E-PDCCH indication information of base-station transmission; According to this E-PDCCH indication information, determine the form of this E-PDCCH, the form of this E-PDCCH comprises resource distribution and/or the transmission means of this E-PDCCH.
On the one hand, the embodiment of the invention provides a kind of base station again, and this base station comprises: determination module, be used for definite form of expanding Physical Downlink Control Channel E-PDCCH, and the form of this E-PDCCH comprises resource distribution and/or the transmission means of this E-PDCCH; Transport module, be used for the resource at least one control channel unit CCE mapping of physical downlink control channel PDCCH, to user device transmissions E-PDCCH indication information, this E-PDCCH indication information is used to indicate the form of this definite E-PDCCH of this determination module.
Again on the one hand, the embodiment of the invention provides a kind of subscriber equipment, this subscriber equipment comprises: receiver module, be used for the resource at least one control channel unit CCE mapping of physical downlink control channel PDCCH, receive the expansion Physical Downlink Control Channel E-PDCCH indication information of base-station transmission; Determination module is used for this E-PDCCH indication information according to this receiver module reception, determines the form of this E-PDCCH, and the form of this E-PDCCH comprises resource distribution and/or the transmission means of this E-PDCCH.
Based on technique scheme, the method of the embodiment of the invention, base station and subscriber equipment, by on the resource of at least one control channel unit maps of Physical Downlink Control Channel, to user device transmissions E-PDCCH indication information, the E-PDCCH indication information can be realized dynamically transmitting, thereby the level of resources utilization of system and the transmission performance of E-PDCCH can be improved.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the below will do to introduce simply to the accompanying drawing of required use in the embodiment of the invention, apparently, below described accompanying drawing only be some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the indicative flowchart according to the method for the transmitting control channel indication information of the embodiment of the invention.
Fig. 2 is the schematic block diagram according to the transmission E-PDCCH indication information of the embodiment of the invention.
Fig. 3 is according to the PDCCH of the embodiment of the invention and the multiplexing schematic block diagram of PDSCH.
Fig. 4 is the schematic block diagram according to the syndication format of the E-PDCCH of the embodiment of the invention.
Fig. 5 is the indicative flowchart of the method for transmitting control channel indication information according to another embodiment of the present invention.
Fig. 6 is the schematic block diagram according to the base station of the embodiment of the invention.
Fig. 7 is the schematic block diagram of subscriber equipment according to another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work should belong to the scope of protection of the invention.
Should understand, technical scheme of the present invention can be applied to various communication systems, for example: global system for mobile telecommunications (Global System of Mobile communication, referred to as " GSM ") system, code division multiple access (Code Division Multiple Access, referred to as " CDMA ") system, Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, referred to as " WCDMA ") system, GPRS (General Packet Radio Service, referred to as " GPRS "), Long Term Evolution (Long Term Evolution, referred to as " LTE ") system, LTE Frequency Division Duplexing (FDD) (Frequency Division Duplex, referred to as " FDD ") system, LTE time division duplex (Time Division Duplex, referred to as " TDD "), universal mobile telecommunications system (Universal Mobile Telecommunication System, referred to as " UMTS "), and other use the wireless communication system of orthogonal frequency (OFDM) technology etc.
Will also be understood that, in embodiments of the present invention, terminal equipment also can be referred to as subscriber equipment (User Equipment, referred to as " UE "), travelling carriage (Mobile Station, referred to as " MS "), portable terminal (Mobile Terminal) etc., this terminal equipment can be through wireless access network (Radio Access Network, referred to as " RAN ") communicate with one or more core net, for example, terminal equipment can be mobile phone (or being called " honeycomb " phone), has the computer of portable terminal etc., for example, terminal equipment can also be portable, pocket, hand-hold type, built-in computer or vehicle-mounted mobile device, they and wireless access network exchange language and/or data.
In embodiments of the present invention, the base station can be base station (the Base Transceiver Station among GSM or the CDMA, referred to as " BTS "), also can be the base station (NodeB among the WCDMA, referred to as " NB "), it can also be the evolved base station (Evolutional Node B is referred to as " eNB or e-NodeB ") among the LTE.The embodiment of the invention does not limit base station and subscriber equipment, but for convenience of description, and following embodiment will describe as an example of eNB and UE example.
For convenience, the embodiment of the invention will describe as an example of LTE R11 example, be not limited to this but should understand the embodiment of the invention, and for example the follow-up version of LTE can be used method, base station and the subscriber equipment according to the embodiment of the invention.
Fig. 1 shows the indicative flowchart according to the method for the transmitting control channel indication information of the embodiment of the invention.As shown in Figure 1, the method comprises:
S110, the form of definite expansion Physical Downlink Control Channel E-PDCCH, the form of this E-PDCCH comprise resource distribution and/or the transmission means of this E-PDCCH;
S120, at at least one control channel unit of physical downlink control channel PDCCH (Control Channel Element, referred to as " CCE ") mapping resource on, to user device transmissions E-PDCCH indication information, this E-PDCCH indication information is used to indicate the form of this E-PDCCH.
In LTE R11 communication system, the base station has adopted the technology of dynamic dispatching to improve the performance of system, and the subscriber equipment that namely is scheduled in each subframe is dynamic change.Therefore, for the level of resources utilization and the transmission performance that guarantees E-PDCCH, the base station needs notifying user equipment dynamically to be used to indicate the E-PDCCH indication information of the form of E-PDCCH.The form of E-PDCCH at first can be determined in the base station, for example the form of this E-PDCCH can be determined according to the channel conditions of each scheduled user's equipment in the base station, information such as the resource distribution that can comprise E-PDCCH, transmission means, modulation coding mode of the form of this E-PDCCH.In order dynamically to transmit this E-PDCCH indication information, on the resource that the base station can be shone upon at least one CCE of PDCCH, to this E-PDCCH indication information of user device transmissions.
Therefore, the method of the transmitting control channel indication information of the embodiment of the invention, by on the resource of at least one control channel unit maps of Physical Downlink Control Channel, to user device transmissions E-PDCCH indication information, the E-PDCCH indication information can be realized dynamically transmitting, thereby the level of resources utilization of system and the transmission performance of E-PDCCH can be improved.
Should understand, PDCCH is used for the scheduling indication information of the downlink or uplink transfer of data of transmission user equipment, this indication information comprises: the resource distribution of data channel, modulation coding mode, multi-antenna transmission, mixed automatic retransfer request (Hybrid Automatic Repeat Request, referred to as " HARQ ") information that process is relevant etc., and the PDCCH of a plurality of subscriber equipmenies shares the running time-frequency resource of down control channel.
The communication system of LTE R11 has defined the component units of CCE as the PDCCH resource, and each CCE is mapped in the one group of particular resource unit (Resource Element is referred to as " RE ") in the PDCCH zone, and each CCE is comprised of 36 RE usually.Each PDCCH can be comprised of 1,2,4 or 8 continuous CCE, correspond respectively to different encoder bit rates, and the CCE number that forms each PDCCH determined by the size of PDCCH and the channel conditions of PDCCH institute relative user equipment, and a kind of implementation of the PDCCH of the different user devices that wherein is comprised of CCE is shown in (A) among Fig. 2.
In embodiments of the present invention, because the base station is take CCE as the unit as user equipment allocation PDCCH resource, therefore the base station uses the resource of CCE mapping to user device transmissions E-PDCCH indication information, can not affect the resource mapping of PDCCH, subscriber equipment still can detect the PDCCH that sends to this subscriber equipment oneself by blind Detecting.For example, form the PDCCH situation for the CCE shown in (A) among Fig. 2, can set with the resource of CCE4 mapping and transmit the E-PDCCH indication signaling, the PDCCH that then is comprised of CCE is shown in (B) among Fig. 2.
The CCE that the PDCCH zone comprises can be divided into public search space and user search space, wherein the CCE in this public search space is used for the scheduling indication signaling of transmission common control information, and this common control information is such as comprising: system broadcast message, beep-page message, access message etc. immediately; CCE in this user search space is used for the scheduling indication signaling of transmission user up-downgoing data.Public search space comprises that sequence number is 0 to 15 CCE, and the CCE in the user search space is then determined by the syndication format of customer equipment identification and PDCCH.
Because the PDCCH in the PDCCH zone in the public search space is by 2,4 or 8 CCE compositions, if use 1 CCE in the public search space to transmit the E-PDCCH indication signaling, the CCE that can destroy original PDCCH in the public search space distributes.Therefore, in embodiments of the present invention, preferably, the base station is on the resource of at least one the CCE mapping outside the public search space of this PDCCH, to this E-PDCCH indication information of this user device transmissions, at least one CCE that namely is used for this E-PDCCH indication information of transmission is positioned at outside the public search space of this PDCCH.Should be understood that this E-PDCCH indication information can be positioned on each descending sub frame, also can be positioned on the subframe of default that for example, the E-PDCCH indication information is arranged on the 0th subframe of each radio frames (10ms).And the CCE of transmission E-PDCCH indication information can be that system is predefined, also can be the specific CCE that receiving-transmitting sides is all known, for example the mode by signaling.
In embodiments of the present invention, alternatively, this E-PDCCH indication information comprises resource distribution indication information and/or transmission means indication information, and the resource that this resource distributes indication information to be used to indicate this E-PDCCH is distributed, and this transmission means indication information is used to indicate the transmission means of this E-PDCCH.
Alternatively, it is bitmap (Bitmap) form that this resource is distributed indication information, indicate Resource Block (the Resource Block of Physical Downlink Shared Channel PDSCH at the resource place of this E-PDCCH, referred to as " RB ") the position, or indicate the position of OFDM symbol of PDSCH at the resource place of this E-PDCCH, or indicate the RB of PDSCH at resource place of this E-PDCCH and the position of OFDM symbol.Alternatively, the position of this RB comprises the position of Resource Block group (Resource Block Group is referred to as " RBG ") of PDSCH at the resource place of this E-PDCCH.
For example, the base station can be each Resource Block, Resource Block group or bit of OFDM allocation of symbols, and " 0 " of this bit or one state can be used for representing whether corresponding Resource Block, Resource Block group or OFDM symbol are used for the E-PDCCH transmission.For example, be used for the E-PDCCH transmission with the corresponding Resource Block of " 1 " expression, and use the corresponding Resource Block of " 0 " expression to be not used in the E-PDCCH transmission.
In embodiments of the present invention, alternatively, when the resource of this E-PDCCH was the continuous RB of a plurality of frequencies of PDSCH, this resource distributed indication information to comprise the sequence number of the initial RB that this E-PDCCH takies, and the quantity of the RB that takies continuously of this E-PDCCH.
For example, if E-PDCCH and PDSCH adopt the mode of frequency division multiplexing multiplexing in a subframe, and when E-PDCCH takies continuous running time-frequency resource, the quantity of the sequence number that the base station can be by telling the initial RB of subscriber equipment and the RB that takies is so that subscriber equipment can be determined the resource location at E-PDCCH place.For example, the sequence number of the initial RB that this E-PDCCH takies is 8, and this E-PDCCH takies 4 RB continuously, and the resource at E-PDCCH place is that sequence number is 8 to 11 RB so.
In embodiments of the present invention, alternatively, when the resource of this E-PDCCH is among the continuous RB of a plurality of frequencies of PDSCH during the running time-frequency resource on the part OFDM symbol, this resource distributes indication information to comprise the sequence number of the quantity of the sequence number of the initial RB that this E-PDCCH takies, RB that this E-PDCCH takies continuously, initial OFDM symbol that this E-PDCCH takies and the quantity of the OFDM symbol that this E-PDCCH takies continuously.
For example, the mode of frequency division multiplexing is multiplexing in a subframe when E-PDCCH and PDSCH employing, and when E-PDCCH takies continuous running time-frequency resource, the resource that the base station sends to subscriber equipment is distributed initial RB that indication information can comprise that this E-PDCCH takies and the sequence number of initial OFDM symbol, and the RB that takies continuously of this E-PDCCH and the quantity of OFDM symbol.
In embodiments of the present invention, in order to reduce overhead, resource distributes indication information can only comprise the sequence number of E-PDCCH frequency patterns, wherein this E-PDCCH frequency patterns is the predefined frequency patterns for this E-PDCCH of transmission of system, and each E-PDCCH frequency patterns comprises the Resource Block of fixed position.
In embodiments of the present invention, alternatively, the transmission means indication information comprises syndication format indication information and/or the multi-antenna transmission indication information of this E-PDCCH.The information relevant with the E-PDCCH transmission means that subscriber equipment is included according to this transmission means indication information can further reduce the blind Detecting number of times.
For example, the base station can be with predefined expansion control channel unit (Extended Control Channel Element, referred to as " E-CCE ") for carrying out resource, distributes the unit, each E-CCE is mapped on the specific RE in the E-PDCCH zone, and the quantity according to E-CCE is different, can define multiple E-PDCCH syndication format.For example, system can define 4 kinds of E-PDCCH syndication format, and namely 1,2,4 and 8 E-CCE condenses together.As shown in Figure 4, show schematic diagram based on a kind of compound mode of the E-CCE among the E-PDCCH of tree.
In embodiments of the present invention, this syndication format indication information not only can comprise the concrete syndication format that adopts of E-PDCCH, also can comprise the scope of the syndication format that E-PDCCH adopts, for example, and greater than 2 E-CCE or less than or equal to 2 E-CCE etc.
Therefore, subscriber equipment is after receiving the E-PDCCH indication information of base-station transmission, just can know the syndication format of the E-PDCCH in the E-PDCCH zone, subscriber equipment only needs to detect E-PDCCH according to the syndication format of notice, thereby can effectively reduce subscriber equipment blind Detecting number of times.
In embodiments of the present invention, the transmission means indication information can comprise the multi-antenna transmission indication information of the multi-antenna transmission relevant information that is used to indicate E-PDCCH.Alternatively, this multi-antenna transmission indication information comprises the amount of space transmission that this E-PDCCH adopts and/or carries out the quantity of the subscriber equipment of spatial reuse transmission.Should understand, in order to strengthen the transmission performance of E-PDCCH, and then the capacity of raising E-PDCCH, subscriber equipment can adopt the multi-antenna transmission mode, the E-PDCCH that comprises unique user equipment uses multilayer transmission, and the E-PDCCH of a plurality of subscriber equipmenies is multiplexing at the enterprising row space of identical running time-frequency resource.Therefore, notifying user equipment this transmission means indication information in base station so that subscriber equipment can carry out blind Detecting according to this transmission means indication information, thereby can reduce subscriber equipment blind Detecting number of times and complexity effectively.
Therefore, the method of the transmitting control channel indication information of the embodiment of the invention, by on the resource of at least one control channel unit maps of Physical Downlink Control Channel, to user device transmissions E-PDCCH indication information, can realize dynamically transmitting the E-PDCCH indication information, reduce the system signaling expense, improve the level of resources utilization of system and the transmission performance of E-PDCCH, and can support well backwards compatibility, reduce subscriber equipment blind Detecting number of times and complexity.
Above in conjunction with Fig. 1 to Fig. 4, describe method according to the transmitting control channel indication information of the embodiment of the invention in detail from the angle of base station, hereinafter in connection with Fig. 5, from the angle of subscriber equipment method according to the transmitting control channel indication information of the embodiment of the invention is described.
Fig. 5 shows the indicative flowchart according to the method for the transmitting control channel indication information of the embodiment of the invention.As shown in Figure 5, the method comprises:
S210, subscriber equipment receive the E-PDCCH indication information of base-station transmission on the resource of at least one CCE mapping of PDCCH;
S220, subscriber equipment determine the form of this E-PDCCH according to this E-PDCCH indication information, and the form of this E-PDCCH comprises resource distribution and/or the transmission means of this E-PDCCH.
The method of the transmitting control channel indication information of the embodiment of the invention, by subscriber equipment on the resource of at least one control channel unit maps of Physical Downlink Control Channel, receive the E-PDCCH indication information of base-station transmission, the E-PDCCH indication information can be dynamically transmitted, thereby the level of resources utilization of system and the transmission performance of E-PDCCH can be improved.
In embodiments of the present invention, alternatively, this at least one CCE is positioned at outside the public search space of PDCCH, and namely subscriber equipment receives this E-PDCCH indication information of this base-station transmission on the resource of at least one the CCE mapping outside the public search space of this PDCCH.
Alternatively, the resource of the bitmap format that subscriber equipment comprises according to this E-PDCCH indication information is distributed the sequence number of indication information or E-PDCCH frequency patterns, determine the resource distribution of this E-PDCCH, wherein this E-PDCCH frequency patterns is the predefined frequency patterns for this E-PDCCH of transmission of system.
Alternatively, the sequence number of the initial Resource Block RB of the Physical Downlink Shared Channel PDSCH that this E-PDCCH that subscriber equipment comprises according to this E-PDCCH indication information takies, and the quantity of the RB that takies continuously of this E-PDCCH determine that the resource of this E-PDCCH is distributed.
Alternatively, the sequence number of the sequence number of this initial RB that subscriber equipment comprises according to this E-PDCCH indication information, the quantity of this RB, initial orthogonal frequency division multiplex OFDM symbol that this E-PDCCH takies and the quantity of the OFDM symbol that this E-PDCCH takies continuously determine that the resource of this E-PDCCH is distributed.
In embodiments of the present invention, alternatively, syndication format indication information and/or the multi-antenna transmission indication information of this E-PDCCH that subscriber equipment comprises according to this E-PDCCH indication information are determined the transmission means of this E-PDCCH.Alternatively, this multi-antenna transmission indication information comprises the amount of space transmission that this E-PDCCH adopts and/or carries out the quantity of the subscriber equipment of spatial reuse transmission.
Therefore, the method of the transmitting control channel indication information of the embodiment of the invention, by subscriber equipment on the resource of at least one control channel unit maps of Physical Downlink Control Channel, receive the E-PDCCH indication information of base-station transmission, can dynamically transmit the E-PDCCH indication information, the level of resources utilization of raising system and the transmission performance of E-PDCCH can also be supported backwards compatibility well, reduce subscriber equipment blind Detecting number of times and complexity.
Should be understood that subscriber equipment determines the method for the form of E-PDCCH according to the E-PDCCH indication information, the method for this E-PDCCH indication information that sends the form that is used to indicate E-PDCCH with the base station is corresponding, for simplicity, does not repeat them here.
Above in conjunction with Fig. 1 to Fig. 5, describe the method according to the transmitting control channel indication information of the embodiment of the invention in detail, below in conjunction with Fig. 6 and Fig. 7, describe base station and subscriber equipment according to the embodiment of the invention.
Fig. 6 shows the schematic block diagram according to the base station 500 of the embodiment of the invention.As shown in Figure 6, this base station 500 comprises:
Determination module 510 is used for definite form of expanding Physical Downlink Control Channel E-PDCCH, and the form of this E-PDCCH comprises resource distribution and/or the transmission means of this E-PDCCH;
Transport module 520, be used for the resource at least one control channel unit CCE mapping of physical downlink control channel PDCCH, to user device transmissions E-PDCCH indication information, this E-PDCCH indication information is used to indicate the form of this E-PDCCH that this determination module 510 determines.
The base station of the transmitting control channel indication information of the embodiment of the invention, by on the resource of at least one control channel unit maps of Physical Downlink Control Channel, to user device transmissions E-PDCCH indication information, the E-PDCCH indication information can be realized dynamically transmitting, thereby the level of resources utilization of system and the transmission performance of E-PDCCH can be improved.
Alternatively, this transport module 520 also is used for the resource of at least one the CCE mapping outside the public search space of this PDCCH, to this E-PDCCH indication information of this user device transmissions.
Alternatively, this transport module 520 also is used for to this E-PDCCH indication information of this user device transmissions, this E-PDCCH indication information comprises resource distribution indication information and/or transmission means indication information, the resource that this resource distributes indication information to be used to indicate this E-PDCCH is distributed, and this transmission means indication information is used to indicate the transmission means of this E-PDCCH.
Alternatively, this transport module 520 also is used for distributing indication information to this resource of this user device transmissions, it is bitmap format that this resource is distributed indication information, indicates the Resource Block RB of Physical Downlink Shared Channel PDSCH at resource place of this E-PDCCH and/or the position of orthogonal frequency division multiplex OFDM symbol.
Alternatively, when this transport module 520 is the continuous RB of a plurality of frequencies of PDSCH in the resource of this E-PDCCH, also be used for distributing indication information to this resource of this user device transmissions, this resource distributes indication information to comprise the sequence number of the initial RB that this E-PDCCH takies, and the quantity of the RB that takies continuously of this E-PDCCH.
Alternatively, this transport module 520 is among the continuous RB of a plurality of frequencies of PDSCH during the running time-frequency resource on the part OFDM symbol in the resource of this E-PDCCH, also be used for distributing indication information to this resource of this user device transmissions, this resource distributes indication information to comprise the sequence number of the quantity of the sequence number of the initial RB that this E-PDCCH takies, RB that this E-PDCCH takies continuously, initial OFDM symbol that this E-PDCCH takies and the quantity of the OFDM symbol that this E-PDCCH takies continuously.
Alternatively, this transport module 520 also is used for distributing indication information to this resource of this user device transmissions, this resource distributes indication information to comprise the sequence number of E-PDCCH frequency patterns, and this E-PDCCH frequency patterns is the predefined frequency patterns for this E-PDCCH of transmission of system.
Alternatively, this transport module 520 also is used for to this transmission means indication information of this user device transmissions, and this transmission means indication information comprises syndication format indication information and/or the multi-antenna transmission indication information of this E-PDCCH.
Alternatively, this transport module 520 also is used for to this multi-antenna transmission indication information of this user device transmissions, and this multi-antenna transmission indication information comprises the amount of space transmission that this E-PDCCH adopts and/or carries out the quantity of the subscriber equipment of spatial reuse transmission.
Base station 500 according to the transmitting control channel indication information of the embodiment of the invention can be corresponding to the base station in the embodiment of the invention, and above-mentioned and other operation of the modules in the base station 500 and/or function are respectively in order to realize the corresponding flow process of the method 100 among Fig. 1, for simplicity, do not repeat them here.
The base station of the transmitting control channel indication information of the embodiment of the invention, by on the resource of at least one control channel unit maps of Physical Downlink Control Channel, to user device transmissions E-PDCCH indication information, can realize dynamically transmitting the E-PDCCH indication information, the level of resources utilization of raising system and the transmission performance of E-PDCCH, and can reduce the system signaling expense, support well backwards compatibility, reduce subscriber equipment blind Detecting number of times and complexity.
Fig. 7 shows the schematic block diagram according to the subscriber equipment 600 of the transmitting control channel indication information of the embodiment of the invention.As shown in Figure 7, this subscriber equipment 600 comprises:
The subscriber equipment of the transmitting control channel indication information of the embodiment of the invention, by subscriber equipment on the resource of at least one control channel unit maps of Physical Downlink Control Channel, receive base-station transmission E-PDCCH indication information, the E-PDCCH indication information can be realized dynamically transmitting, thereby the level of resources utilization of system and the transmission performance of E-PDCCH can be improved.
In embodiments of the present invention, alternatively, receiver module 610 also is used for the resource of at least one the CCE mapping outside the public search space of this PDCCH, receives this E-PDCCH indication information of this base-station transmission.
Alternatively, this determination module 620 also distributes the sequence number of indication information or E-PDCCH frequency patterns for the resource of the bitmap format that comprises according to this E-PDCCH indication information, determine the resource distribution of this E-PDCCH, wherein this E-PDCCH frequency patterns is the predefined frequency patterns for this E-PDCCH of transmission of system.
Alternatively, the sequence number of the initial Resource Block RB of the Physical Downlink Shared Channel PDSCH that this E-PDCCH that this determination module 620 also is used for comprising according to this E-PDCCH indication information takies, and the quantity of the RB that takies continuously of this E-PDCCH, determine that the resource of this E-PDCCH is distributed.
Alternatively, this determination module 620 also is used for the sequence number of the quantity of sequence number, this RB of this initial RB of comprising according to this E-PDCCH indication information, initial orthogonal frequency division multiplex OFDM symbol that this E-PDCCH takies and the quantity of the OFDM symbol that this E-PDCCH takies continuously, determines the resource distribution of this E-PDCCH.
In embodiments of the present invention, alternatively, this determination module 620 is determined the transmission means of this E-PDCCH also for syndication format indication information and/or the multi-antenna transmission indication information of this E-PDCCH that comprises according to this E-PDCCH indication information.
Alternatively, this determination module 620 also is used for this multi-antenna transmission indication information according to this receiver module reception, determine the transmission means of this E-PDCCH, this multi-antenna transmission indication information comprises the amount of space transmission that this E-PDCCH adopts and/or carries out the quantity of the subscriber equipment of spatial reuse transmission.
Subscriber equipment 600 according to the transmitting control channel indication information of the embodiment of the invention can be corresponding to the subscriber equipment in the embodiment of the invention, and above-mentioned and other operation of the modules in the subscriber equipment 600 and/or function are respectively in order to realize the corresponding flow process of the method 200 among Fig. 5, for simplicity, do not repeat them here.
The subscriber equipment of the transmitting control channel indication information of the embodiment of the invention, by subscriber equipment on the resource of at least one control channel unit maps of Physical Downlink Control Channel, receive base-station transmission E-PDCCH indication information, can realize dynamically transmitting the E-PDCCH indication information, the level of resources utilization of raising system and the transmission performance of E-PDCCH, and can reduce the system signaling expense, support well backwards compatibility, reduce subscriber equipment blind Detecting number of times and complexity.
Those of ordinary skills can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software clearly is described, composition and the step of each example described in general manner according to function in the above description.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.The professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.
The those skilled in the art can be well understood to, and for the convenience described and succinct, the specific works process of the system of foregoing description, device and unit can with reference to the corresponding process among the preceding method embodiment, not repeat them here.
In several embodiment that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.For example, device embodiment described above only is schematic, for example, the division of described unit, only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.In addition, the shown or coupling each other discussed or direct-coupling or communication connection can be indirect coupling or the communication connections by some interfaces, device or unit, also can be electric, machinery or other form connect.
Described unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of unit to realize the purpose of embodiment of the invention scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics of unit exists, and also can be that two or more unit are integrated in the unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, also can adopt the form of SFU software functional unit to realize.
If described integrated unit is realized with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words, perhaps all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out all or part of step of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), the various media that can be program code stored such as random access memory (RAM, Random Access Memory), magnetic disc or CD.
The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily modification or the replacement of various equivalences, these modifications or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (28)
1. the method for a transmitting control channel indication information is characterized in that, comprising:
Determine the form of expansion Physical Downlink Control Channel E-PDCCH, the form of described E-PDCCH comprises resource distribution and/or the transmission means of described E-PDCCH;
On the resource that at least one control channel unit CCE of physical downlink control channel PDCCH shines upon, to user device transmissions E-PDCCH indication information, described E-PDCCH indication information is used to indicate the form of described E-PDCCH.
2. method according to claim 1 is characterized in that, described at least one CCE is positioned at outside the public search space of described PDCCH.
3. method according to claim 1 and 2, it is characterized in that, described E-PDCCH indication information comprises resource distribution indication information and/or transmission means indication information, the resource that described resource distributes indication information to be used to indicate described E-PDCCH is distributed, and described transmission means indication information is used to indicate the transmission means of described E-PDCCH.
4. method according to claim 3 is characterized in that, it is bitmap format that described resource is distributed indication information, indicates the Resource Block RB of Physical Downlink Shared Channel PDSCH at resource place of described E-PDCCH and/or the position of orthogonal frequency division multiplex OFDM symbol.
5. method according to claim 3, it is characterized in that, when the resource of described E-PDCCH was the continuous RB of a plurality of frequencies of PDSCH, described resource distributed indication information to comprise the sequence number of the initial RB that described E-PDCCH takies, and the quantity of the RB that takies continuously of described E-PDCCH.
6. method according to claim 3, it is characterized in that, when the resource of described E-PDCCH is among the continuous RB of a plurality of frequencies of PDSCH during the running time-frequency resource on the part OFDM symbol, described resource distributes indication information to comprise the sequence number of the initial OFDM symbol that the quantity of the RB that the sequence number of the initial RB that described E-PDCCH takies, described E-PDCCH take continuously, described E-PDCCH take and the quantity of the OFDM symbol that described E-PDCCH takies continuously.
7. method according to claim 3 is characterized in that, described resource distributes indication information to comprise the sequence number of E-PDCCH frequency patterns, and described E-PDCCH frequency patterns is the predefined frequency patterns be used to transmitting described E-PDCCH of system.
8. method according to claim 3 is characterized in that, described transmission means indication information comprises syndication format indication information and/or the multi-antenna transmission indication information of described E-PDCCH.
9. method according to claim 8 is characterized in that, described multi-antenna transmission indication information comprises the amount of space transmission that described E-PDCCH adopts and/or carries out the quantity of the subscriber equipment of spatial reuse transmission.
10. the method for a transmitting control channel indication information is characterized in that, comprising:
On the resource that at least one control channel unit CCE of physical downlink control channel PDCCH shines upon, receive the expansion Physical Downlink Control Channel E-PDCCH indication information of base-station transmission;
According to described E-PDCCH indication information, determine the form of described E-PDCCH, the form of described E-PDCCH comprises resource distribution and/or the transmission means of described E-PDCCH.
11. method according to claim 10 is characterized in that, described at least one CCE is positioned at outside the public search space of described PDCCH.
12. according to claim 10 or 11 described methods, it is characterized in that the described form of determining described E-PDCCH comprises:
The resource of the bitmap format that comprises according to described E-PDCCH indication information is distributed the sequence number of indication information or E-PDCCH frequency patterns, determine the resource distribution of described E-PDCCH, wherein said E-PDCCH frequency patterns is the predefined frequency patterns be used to transmitting described E-PDCCH of system; Or
The sequence number of the initial Resource Block RB of the Physical Downlink Shared Channel PDSCH that the described E-PDCCH that comprises according to described E-PDCCH indication information takies, and the quantity of the RB that takies continuously of described E-PDCCH determine that the resource of described E-PDCCH is distributed; Or
The sequence number of the initial orthogonal frequency division multiplex OFDM symbol that the sequence number of the described initial RB that comprises according to described E-PDCCH indication information, the quantity of described RB, described E-PDCCH take and the quantity of the OFDM symbol that described E-PDCCH takies continuously determine that the resource of described E-PDCCH is distributed.
13. according to claim 10 or 11 described methods, it is characterized in that the described form of determining described E-PDCCH comprises:
Syndication format indication information and/or the multi-antenna transmission indication information of the described E-PDCCH that comprises according to described E-PDCCH indication information are determined the transmission means of described E-PDCCH.
14. method according to claim 13 is characterized in that, described multi-antenna transmission indication information comprises the amount of space transmission that described E-PDCCH adopts and/or carries out the quantity of the subscriber equipment of spatial reuse transmission.
15. a base station is characterized in that, comprising:
Determination module is used for definite form of expanding Physical Downlink Control Channel E-PDCCH, and the form of described E-PDCCH comprises resource distribution and/or the transmission means of described E-PDCCH;
Transport module, be used for the resource at least one control channel unit CCE mapping of physical downlink control channel PDCCH, to user device transmissions E-PDCCH indication information, described E-PDCCH indication information is used to indicate the form of the definite described E-PDCCH of described determination module.
16. base station according to claim 15 is characterized in that, described transport module also is used for the resource of at least one the CCE mapping outside the public search space of described PDCCH, to the described E-PDCCH indication information of described user device transmissions.
17. according to claim 15 or 16 described base stations, it is characterized in that, described transport module also is used for to the described E-PDCCH indication information of described user device transmissions, described E-PDCCH indication information comprises resource distribution indication information and/or transmission means indication information, the resource that described resource distributes indication information to be used to indicate described E-PDCCH is distributed, and described transmission means indication information is used to indicate the transmission means of described E-PDCCH.
18. base station according to claim 17, it is characterized in that, described transport module also is used for distributing indication information to the described resource of described user device transmissions, it is bitmap format that described resource is distributed indication information, indicates the Resource Block RB of Physical Downlink Shared Channel PDSCH at resource place of described E-PDCCH and/or the position of orthogonal frequency division multiplex OFDM symbol.
19. base station according to claim 17, it is characterized in that, when described transport module is the continuous RB of a plurality of frequencies of PDSCH in the resource of described E-PDCCH, also be used for distributing indication information to the described resource of described user device transmissions, described resource distributes indication information to comprise the sequence number of the initial RB that described E-PDCCH takies, and the quantity of the RB that takies continuously of described E-PDCCH.
20. base station according to claim 17, it is characterized in that, described transport module is among the continuous RB of a plurality of frequencies of PDSCH during the running time-frequency resource on the part OFDM symbol in the resource of described E-PDCCH, also be used for distributing indication information to the described resource of described user device transmissions, described resource distributes indication information to comprise the sequence number of the initial OFDM symbol that the quantity of the RB that the sequence number of the initial RB that described E-PDCCH takies, described E-PDCCH take continuously, described E-PDCCH take and the quantity of the OFDM symbol that described E-PDCCH takies continuously.
21. base station according to claim 17, it is characterized in that, described transport module also is used for distributing indication information to the described resource of described user device transmissions, described resource distributes indication information to comprise the sequence number of E-PDCCH frequency patterns, and described E-PDCCH frequency patterns is the predefined frequency patterns be used to transmitting described E-PDCCH of system.
22. base station according to claim 17, it is characterized in that, described transport module also is used for to the described transmission means indication information of described user device transmissions, and described transmission means indication information comprises syndication format indication information and/or the multi-antenna transmission indication information of described E-PDCCH.
23. base station according to claim 22, it is characterized in that, described transport module also is used for to the described multi-antenna transmission indication information of described user device transmissions, and described multi-antenna transmission indication information comprises the amount of space transmission that described E-PDCCH adopts and/or carries out the quantity of the subscriber equipment of spatial reuse transmission.
24. a subscriber equipment is characterized in that, comprising:
Receiver module is used for the resource at least one control channel unit CCE mapping of physical downlink control channel PDCCH, receives the expansion Physical Downlink Control Channel E-PDCCH indication information of base-station transmission;
Determination module is used for the described E-PDCCH indication information according to described receiver module reception, determines the form of described E-PDCCH, and the form of described E-PDCCH comprises resource distribution and/or the transmission means of described E-PDCCH.
25. subscriber equipment according to claim 24 is characterized in that, described receiver module also is used for the resource of at least one the CCE mapping outside the public search space of described PDCCH, receives the described E-PDCCH indication information of described base-station transmission.
26. according to claim 24 or 25 described subscriber equipmenies, it is characterized in that, described determination module also distributes the sequence number of indication information or E-PDCCH frequency patterns for the resource of the bitmap format that comprises according to described E-PDCCH indication information, determine the resource distribution of described E-PDCCH, wherein said E-PDCCH frequency patterns is the predefined frequency patterns be used to transmitting described E-PDCCH of system; Or
The sequence number of the initial Resource Block RB of the Physical Downlink Shared Channel PDSCH that the described E-PDCCH that described determination module also is used for comprising according to described E-PDCCH indication information takies, and the quantity of the RB that takies continuously of described E-PDCCH, determine that the resource of described E-PDCCH is distributed; Or
Described determination module also is used for the sequence number of the initial orthogonal frequency division multiplex OFDM symbol that the sequence number of the described initial RB that comprises according to described E-PDCCH indication information, the quantity of described RB, described E-PDCCH take and the quantity of the OFDM symbol that described E-PDCCH takies continuously, determines that the resource of described E-PDCCH is distributed.
27. according to claim 24 or 25 described subscriber equipmenies, it is characterized in that, described determination module is determined the transmission means of described E-PDCCH also for syndication format indication information and/or the multi-antenna transmission indication information of the described E-PDCCH that comprises according to described E-PDCCH indication information.
28. subscriber equipment according to claim 27, it is characterized in that, described determination module also is used for the described multi-antenna transmission indication information according to described receiver module reception, determine the transmission means of described E-PDCCH, described multi-antenna transmission indication information comprises the amount of space transmission that described E-PDCCH adopts and/or carries out the quantity of the subscriber equipment of spatial reuse transmission.
Priority Applications (2)
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| CN201110184991.XA CN102869049B (en) | 2011-07-04 | 2011-07-04 | Method for transmitting control channel indication information, base station and user equipment |
| PCT/CN2012/078046 WO2013004159A1 (en) | 2011-07-04 | 2012-07-02 | Method, base station and user equipment for transmitting control channel indication information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110184991.XA CN102869049B (en) | 2011-07-04 | 2011-07-04 | Method for transmitting control channel indication information, base station and user equipment |
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| CN102869049A true CN102869049A (en) | 2013-01-09 |
| CN102869049B CN102869049B (en) | 2015-07-08 |
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Also Published As
| Publication number | Publication date |
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| WO2013004159A1 (en) | 2013-01-10 |
| CN102869049B (en) | 2015-07-08 |
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