WO2013063948A1 - 接收和发送控制信道的方法、用户设备和基站 - Google Patents

接收和发送控制信道的方法、用户设备和基站 Download PDF

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Publication number
WO2013063948A1
WO2013063948A1 PCT/CN2012/077829 CN2012077829W WO2013063948A1 WO 2013063948 A1 WO2013063948 A1 WO 2013063948A1 CN 2012077829 W CN2012077829 W CN 2012077829W WO 2013063948 A1 WO2013063948 A1 WO 2013063948A1
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WIPO (PCT)
Prior art keywords
search space
control channel
information
time
determining
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.)
Ceased
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PCT/CN2012/077829
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English (en)
French (fr)
Inventor
官磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to EP19181138.9A priority Critical patent/EP3637666B1/en
Priority to BR112014010721-1A priority patent/BR112014010721B1/pt
Priority to KR1020147013894A priority patent/KR101656159B1/ko
Priority to JP2014539216A priority patent/JP5902821B2/ja
Priority to ES12844729.9T priority patent/ES2600896T3/es
Priority to EP12844729.9A priority patent/EP2763343B1/en
Priority to EP16170845.8A priority patent/EP3121987B1/en
Priority to CA2853704A priority patent/CA2853704C/en
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2013063948A1 publication Critical patent/WO2013063948A1/zh
Priority to US14/267,372 priority patent/US9622220B2/en
Anticipated expiration legal-status Critical
Priority to US15/461,157 priority patent/US10212700B2/en
Priority to US16/235,266 priority patent/US20190141685A1/en
Ceased legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0086Search parameters, e.g. search strategy, accumulation length, range of search, thresholds
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signalling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603Arrangements for wireless physical layer control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J2211/00Orthogonal indexing scheme relating to orthogonal multiplex systems
    • H04J2211/003Orthogonal indexing scheme relating to orthogonal multiplex systems within particular systems or standards
    • H04J2211/005Long term evolution [LTE]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present invention relates to the field of communications, and more particularly to a method, a user equipment, and a base station for receiving and transmitting a control channel in the field of communications. Background technique
  • a minimum time unit for scheduling an evolved NodeB is one subframe, and each subframe includes two slots. Each time slot also includes 7 symbols.
  • eNB evolved NodeB
  • the physical downlink control channel Physical Downlink Control Channel
  • the PDCCH is used to carry scheduling information of the scheduled UE, and the scheduling information includes physical channel resources allocated to the UE, and a modulation and coding scheme (“MCS”) information used in the specific use.
  • MCS modulation and coding scheme
  • the PDCCH and the Physical Downlink Shared Channel are present in one subframe in a time division manner, where PDCCH 7 is carried in the first n subframes of one subframe. Within the symbol, n may be one of 1, 2, 3, and 4, and downlink data scheduled by the PDSCH is mapped from the n+1th symbol of the subframe.
  • the PDCCH and the PDSCH are processed by interleaving and then spread to the bandwidth of the entire system to obtain a frequency diversity gain.
  • the UE demodulates and decodes the PDCCH according to the payload size and the aggregation level of the PDCCH in the search space of the PDCCH based on the cell-specific reference signal (Cell-specific Reference Signal), and uses the UE-specific wireless.
  • a network temporary identifier Radio Network Temporary Identity, referred to as "RNTI” or an identity, a Cyclical Redundancy Check (CRC) called to check and determine the UE's The PDCCH, and correspondingly receiving or transmitting the scheduled data according to the scheduling information in the PDCCH.
  • RNTI Radio Network Temporary Identity
  • CRC Cyclical Redundancy Check
  • the embodiments of the present invention provide a method for receiving and transmitting a control channel, a user equipment, and a base station, which can implement reception and transmission of a control channel.
  • the embodiment of the present invention provides a method for receiving a control channel, where the method includes: acquiring time-frequency resource information of a control channel and first information; determining the control channel according to the time-frequency resource information and the first information. Search space; the control channel is received in the search space. .
  • an embodiment of the present invention provides a method for transmitting a control channel, where the method includes: acquiring time-frequency resource information of a control channel and first information; determining the control according to the time-frequency resource information and the first information. a search space of a channel; the control channel is transmitted to the user equipment in the search space.
  • the embodiment of the present invention provides a user equipment, where the user equipment includes: an acquiring module, configured to acquire time-frequency resource information of the control channel and first information; and a determining module, configured to acquire according to the acquiring module The time-frequency resource information and the first information determine a search space of the control channel; and the receiving module is configured to receive the control channel in the search space determined by the determining module.
  • the embodiment of the present invention provides a base station, where the base station includes: an acquiring module, configured to acquire time-frequency resource information of the control channel and first information; and a determining module, configured to acquire the time-frequency according to the acquiring module And the first information sending the control channel to the user equipment in the search space determined by the determining module.
  • the method for receiving and transmitting a control channel, the user equipment, and the base station in the embodiment of the present invention can determine the search space of the control channel according to the time-frequency resource information of the control channel and the first information, and thus can implement the The control channel performs reception and transmission, and can expand the capacity of the control channel, improve system scheduling efficiency and flexibility, and further improve the user's body.
  • FIG. 1 is a schematic block diagram of a resource block and a resource block pair according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method of receiving a control channel according to an embodiment of the present invention.
  • FIG. 3 is another schematic flowchart of a method for receiving a control channel according to an embodiment of the present invention.
  • 4A and 4B are schematic flow charts of a method of determining a search space according to an embodiment of the present invention.
  • Figure 5 is a schematic map of a search space in accordance with an embodiment of the present invention.
  • FIG. 6 is another schematic map of a search space in accordance with an embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a method of transmitting a control channel according to another embodiment of the present invention.
  • 8A and 8B are schematic flow charts of a method of determining a search space according to another embodiment of the present invention.
  • FIG. 9 is a schematic block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 10 is another schematic block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 11 is still another schematic block diagram of a user equipment according to an embodiment of the present invention.
  • Figure 12A is a schematic block diagram of a first determining sub-module in accordance with an embodiment of the present invention.
  • Figure 12B is a schematic block diagram of a second determining sub-module in accordance with an embodiment of the present invention.
  • FIG. 13 is a schematic block diagram of a base station according to an embodiment of the present invention.
  • FIG. 14 is another schematic block diagram of a base station according to an embodiment of the present invention.
  • FIG. 15 is still another schematic block diagram of a base station according to an embodiment of the present invention.
  • Figure 16A is a schematic block diagram of a first determining sub-module in accordance with an embodiment of the present invention.
  • 16B is a schematic block diagram of a second determining sub-module in accordance with an embodiment of the present invention. detailed description
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • General Packet Radio Service General Packet Radio Service
  • LTE Long Term Evolution
  • LTE frequency division duplex Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Unicom Mobile Telecommunication System
  • USB Worldwide Interoperability for Microwave Access
  • the user sets User Equipment, the tube is called “UE”, which can be called terminal (Terminal), mobile station (Mobile Station, called “MS”), mobile terminal (Mobile).
  • Terminal device, etc. the user equipment can communicate with one or more core networks via a Radio Access Network ("RAN"), for example, the user equipment can be a mobile phone (or "cellular,” , a telephone, a computer with a mobile terminal, etc., for example, the user device can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges voice and/or data with the wireless access network.
  • RAN Radio Access Network
  • the base station may be a base station in GSM or CDMA (Base
  • BTS can also be a base station in WCDMA (NodeB, called “NB”), or an evolved base station in LTE (Evolutional Node B, called ' ⁇ or e -NodeB”), the present invention is not limited.
  • NB NodeB
  • LTE Long Term Evolution
  • the E-PDCCH is located in an area of one subframe for transmitting downlink data, not in a control region of the first n symbols of one subframe, and the E-PDCCH and the PDSCH are located in a frequency division manner.
  • the area in which the downlink data is transmitted, that is, the E-PDCCH and the PDSCH occupy different resource blocks (the resource block, referred to as "RB").
  • RB resource block
  • an RB occupies 12 subcarriers in the frequency domain and occupies half of the subframes in the time domain, that is, one slot.
  • RB0 occupies slot
  • RB1 occupies slot 1
  • one RB pair ( RB Pair ) is RB-like in the frequency domain, occupies 12 subcarriers, but occupies a complete subframe in the time domain.
  • the method 100 includes:
  • the user equipment can obtain the time-frequency resource information of the control channel and the first information, and can determine the search space of the control channel according to the time-frequency resource information and the first information, so that the user equipment can be located in the control channel.
  • the control channel is received in the search space of the control channel.
  • the method for receiving a control channel can determine the search space of the control channel according to the time-frequency resource information of the control channel and the first information, so that the control channel can be received and transmitted, and can be expanded.
  • Control channel capacity improve system scheduling efficiency and flexibility, and further enhance the user experience.
  • the user equipment receiving the control channel in the search space may include: the user equipment performs blind detection in the search space of the determined control channel, and receives after detecting the control channel of the user equipment.
  • the control channel may include: the user equipment performs blind detection in the search space of the determined control channel, and receives after detecting the control channel of the user equipment.
  • the control channel may also be understood that after receiving the control channel, the user equipment may receive or transmit data through the data channel indicated by the control signaling according to control signaling carried by the control channel.
  • embodiments of the present invention include an enhanced physical downlink control channel with a control channel.
  • the E-PDCCH is described as an example, but the embodiment of the present invention is not limited thereto.
  • the method 100 for receiving a control channel may further include:
  • the user equipment receives the first signaling sent by the base station, where the first signaling includes the time-frequency resource information and the first information.
  • the S110 specifically includes: the user equipment acquiring the time-frequency resource information and the first information according to the first signaling.
  • the first signaling may be high layer signaling, such as radio resource control (Radio Resource Control, "RRC”) signaling or media access control (Media Access Control, “MAC”).
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the first signaling may also be physical layer signaling, such as PDCCH signaling or other physical layer signaling.
  • the first signaling may include one signaling, and may also include multiple signalings, that is, the base station may send the time-frequency resource information and the first information to the user through one signaling or at least two signalings. device.
  • the base station transmits the time-frequency resource information and the first information by using at least two signalings
  • each of the at least two signalings may carry all or part of the time-frequency resource information or the first information, and may also carry The time-frequency resource information and a part of the first information
  • the embodiment of the present invention is not limited thereto.
  • the user equipment acquires time-frequency resource information and first information.
  • the time-frequency resource information is used to indicate a time-frequency resource of the control channel
  • the time-frequency resource information may be a set of RB or RB pairs.
  • the time-frequency resource of the control channel may be a group of RB pairs, where at least one RB pair is included, and each RB pair of the at least one RB pair may be on a physical resource. Continuous, it can also be discontinuous.
  • the E-PDCCH of the user equipment UE may occupy at least one RB or RB pair in the set of RB pairs.
  • the first information includes configuration information of a user equipment specific reference signal UERS for receiving the control channel, and/or location information of the search space.
  • the user equipment specific reference signal UERS is used to demodulate the control channel of the user equipment
  • the configuration information of the UERS may include information such as the antenna port number of the UERS, the scrambling code corresponding to the antenna port, and the number of antenna ports.
  • the user equipment may determine a search space of the control channel according to the time-frequency resource information and the first information.
  • the user equipment may determine, according to the time-frequency resource information, the first mapping relationship between the time-frequency resource information and the search space resource, and the location information, the search space of the control channel;
  • the search space corresponding to the configuration information may also be determined according to the time-frequency resource information, the first mapping relationship between the time-frequency resource information and the search space resource, and the configuration information. Description will be made below in conjunction with Figs. 4A and 4B, respectively.
  • the search space resource may be a search space of a control channel finally obtained by the user equipment, or may be at least two candidate search spaces of the control channel.
  • the search space resources for control When the candidate search space of the channel is used, the user equipment also needs to obtain the search space of the control channel in at least two candidate search spaces included in the search space resource.
  • FIG. 4A a method for determining a search space of a control channel according to an embodiment of the present invention
  • 200 can include:
  • the user equipment determines, according to the time-frequency resource information, a first mapping relationship between the time-frequency resource information and the search space resource, and determines a search space resource.
  • the user equipment determines, according to the location information, a search space of the control channel in the search space resource.
  • the user equipment may determine the time-frequency resource configured to the user equipment according to the time-frequency resource information, and the user equipment may further determine the configured time according to the first mapping relationship between the time-frequency resource information and the search space resource.
  • the time-frequency resource is a set of RB pairs, where the N RB pairs are numbered, for example, 0, 1 , ..., N-1.
  • the N RB pairs can be consecutive.
  • a mapping method of the search space resource is that the control channel search space of the UE is sequentially mapped from the 0th RB pair, for example, taking the aggregation level of one RB as an example, the candidate E in the control channel search space of the UE.
  • the PDCCH resources are the first RB in RB pair 0, the second RB in RB pair 0, the first RB in RB pair 1, the second RB in RB pair 1, and so on.
  • another method for mapping a search space resource is that the control channel search space of the UE may adopt a discrete mapping manner, as shown in FIG. 5, where an aggregation level of one RB is taken as an example, and the control channel searches for space.
  • the candidate E-PDCCH resources are respectively the first 3 RB pairs 0, 1 , 2, and the last 3 RB pairs N-3, N-2, Nl in the configured time-frequency resources.
  • Other mappings with an aggregation level of one RB are not limited, and mappings of other aggregation levels are not limited.
  • the user equipment may determine the search space of the control channel in the search space resource according to the location information included in the first information.
  • an E-PDCCH with an aggregation level of 1 RB as shown in FIG. 5 is taken as an example for description.
  • the UE may acquire time-frequency resource information of the E-PDCCH according to RRC signaling, and first information including location information of the search space. Then, the UE may determine the search space of the control channel according to the time-frequency resource information, the first mapping relationship between the time-frequency resource information and the search space resource, and the location information carried in the first signaling.
  • the first mapping relationship between the time-frequency resource information and the search space resource refers to a mapping manner of the search space resource on the time-frequency resource, that is, a candidate in the search space resource of the control channel.
  • the manner in which the E-PDCCH is mapped on the time-frequency resource The following describes a candidate E-PDCCH as an example. If a part of the resource A1 of the candidate control channel A occupies a part of the RB of the first slot of the RB pair 0, then another part of the resource A2 of the candidate control channel A occupies a part of the RB of the second slot of the RB pair N-3, Then the RB of the first slot of RB pair 0 and the RB of the second slot of RB pair N-3 can be regarded as search space resources. Other mapping relationships are not limited.
  • the UE may further obtain specific location information of the control channel in the search space resource by using location information of the search space in the first signaling. For example, the UE acquires which part of the RB is occupied by the partial resources A1 and A2 of the candidate control channel, for example, A1 occupies the upper part of the RB, and A2 occupies the lower part of the RB.
  • the first signaling including the foregoing location information may belong to the foregoing RRC signaling, and may also be other RRC signaling or physical layer signaling. Moreover, other division manners of the RB are not limited, and control channels of other aggregation levels are not limited.
  • a candidate E-PDCCH A is taken as an example for description.
  • the search space resource of the E-PDCCH A obtained by the user equipment according to the time-frequency resource information, and the first mapping relationship between the time-frequency resource information and the search space resource includes: a) A1 RB occupying the first time slot of the RB pair 0 Or a part of the RB of the first time slot, A2 occupies a part of the RB of the second time slot of the N-3 or the RB of the second time slot, and b) A1 occupies the RB of the second time slot of the RB pair 0 or A portion of the RB of the second slot, A2 occupies an RB of the first slot of the RB pair N-3 or a portion of the RB of the first slot.
  • the user equipment can further determine the final search space in the search space resource according to the location information as the above case a) or b). Other mapping methods are not limited.
  • the method 200 for determining a search space of a control channel may also include:
  • the user equipment determines, according to the time-frequency resource information, a first mapping relationship between the time-frequency resource information and the search space resource, and determines a search space resource.
  • the user equipment determines, according to the second mapping relationship between the configuration information and the search space, and/or the configuration information, the search space corresponding to the configuration information in the search space resource.
  • the UE may determine the UERS configuration with the UE according to the UERS configuration information, and/or the second mapping relationship between the UERS configuration information and the E-PDCCH search space.
  • the control channel search space corresponding to the information.
  • the second mapping relationship between the UERS configuration information and the search space may be interpreted as a mapping relationship between the configuration information of the UERS and its corresponding search space, and the mapping relationship is a UE-specific mapping relationship, such as the antenna port 7 of the UE1.
  • the search space corresponding to the UERS is the search space A, and/or the search space corresponding to the UERS of the antenna port 8 of the UE1 is the search space B; the search space corresponding to the UERS of the antenna port 7 of the UE2 is the search space B, and/or The search space corresponding to the UERS of the antenna port 8 of the UE2 is the search space A.
  • the UE1 and the UE2 can occupy the search space of the same time-frequency resource in a spatial division manner, thereby improving resource utilization efficiency.
  • the UE may determine the control channel search space of the UE according to the UERS configuration information of the UE and/or the second mapping relationship. Specifically, if the first mapping relationship includes all the correspondence between the UERS configuration information and the search space, the second mapping relationship is not needed at this time, and only the UERS configuration information is needed, and the final content can be determined from the search space resources. Search space; If only the search space resource is included in the first mapping relationship, then the UERS configuration information and the second mapping relationship between the configuration information and the search space need to be known to determine the final search space from the search space resources.
  • the UE may determine the search space including the search space A and the search space B according to the time-frequency resource information and the first mapping relationship between the time-frequency resource information and the search space resource.
  • the UE determines, according to the configuration information, and/or the second mapping relationship between the configuration information and the search space, that the control channel search space of the UE is the search space A in the search space resource.
  • the correspondence or mapping relationship between the above-mentioned search space and the UERS configuration information means that if the UE receives the E-PDCCH based on the UERS configuration information of the UE in the search space, it can be understood as the search.
  • the space is a search space corresponding to the UERS configuration information of the UE.
  • an E-PDCCH with an aggregation level of 1 RB as shown in FIG. 5 is taken as an example for description.
  • the UE may acquire time-frequency resource information of the E-PDCCH according to the RRC signaling, and first information including configuration information of the UERS. Then, the UE may determine the search space of the control channel according to the time-frequency resource information, the first mapping relationship between the time-frequency resource information and the search space resource, and the configuration information carried in the first signaling.
  • the UE may further determine a specific search space by using the configuration information of the UERS. For example, the UE acquires which of the two RBs A1 and A2 of the candidate control channel respectively occupy one RB. For example, if the configuration information of the UERS is a single antenna port 7 iU special code 0, then A1 occupies the upper half of the RB of the first slot of the RB pair 0, and A2 occupies the second of the RB pair N-3 The lower half of the RB of the slot; if the configuration information of the UERS is the single antenna port 8 and the scrambling code 0, then A1 occupies the lower half of the RB of the first slot of the RB pair 0, and A2 occupies the RB pair N The upper half of the RB of the second slot of -3.
  • the first signaling including the configuration information may belong to the foregoing RRC signaling, or may be other RRC signaling or physical layer signaling.
  • RRC signaling may be other RRC signaling or physical layer signaling.
  • other division manners of the RB are not limited, and other aggregation level control channels are not limited, and other UERS configuration information is not limited.
  • the user equipment may determine the search space resource according to the time-frequency resource information, the first mapping relationship between the time-frequency resource information and the search space resource.
  • a candidate E-PDCCH is taken as an example for description.
  • a part of the resource A1 of the candidate control channel A occupies a part of the RB of the first slot of the RB pair 0, and another part of the resource A2 of the candidate control channel A occupies a part of the RB of the second slot of the RB pair N-3,
  • the RB of the first slot of the RB pair 0 and the RB of the second slot of the N-3 of the N-3 described herein may be regarded as the search space resource of the candidate E-PDCCH.
  • the user equipment may further determine a search space of the control channel, that is, two parts A1 of the candidate control channel A, according to the UERS configuration information, and/or the second mapping relationship between the UERS configuration information and the search space.
  • Which part of the RB pair is occupied by A2 for example, if the configuration information of the UERS is single antenna port 7 and the scrambling code is 0, then A1 occupies the upper half of the RB of the first time slot of the RB pair 0, and A2 occupies The lower half of the RB of the second slot of the RB pair N-3; if the configuration information of the UERS is the single antenna port 8 and the scrambling code 0, then A1 occupies the RB of the first slot of the RB pair 0 In the half, A2 occupies the upper half of the RB of the second slot of the RB pair N-3.
  • the UERS configuration information has a corresponding relationship with the search space, that is, the determined search space is the search space corresponding to the UERS configuration information.
  • a candidate E-PDCCH A is taken as an example for description.
  • the search space resource of the E-PDCCH A obtained by the user equipment according to the first mapping relationship between the time-frequency resource and the time-frequency resource and the search space resource includes: a) A1 occupies the RB of the first slot of the RB pair 0 or the first a part of the RB of the slot, A2 occupies a part of the RB of the second slot of the RB pair N-3 or a part of the RB of the second slot, and b) A1 occupies the RB of the second slot of the RB pair 0 or the second time A portion of the RB of the slot, A2 occupies an RB of the first slot of the RB pair N-3 or a portion of the RB of the first slot.
  • the search space is determined in the search space resource as the above case a) or b). For example, if the UERS configuration information is single antenna port 7 and scrambling code 0, the search space of the control channel is case a); if the UERS configuration information is single antenna port 8 and scrambling code 0, the search space is case b). It can be seen that the UERS configuration information has a corresponding relationship with the search space, that is, the determined search space is the search space corresponding to the UERS configuration information. Other mapping methods, UERS configuration information and other information are not limited.
  • the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the method for receiving a control channel can determine the search space of the control channel according to the time-frequency resource information of the control channel and the first information, so that the control channel can be received and transmitted, and can be expanded.
  • Control channel capacity improve system scheduling efficiency and flexibility, and further enhance the user experience.
  • the user equipment may obtain the first mapping relationship and the second mapping relationship by receiving the second signaling sent by the base station and/or according to a predetermined rule, where the second signaling includes the first Mapping relationship and/or the second mapping relationship.
  • the second signaling may be high layer signaling such as RRC signaling or MAC signaling, or may be physical layer signaling such as PDCCH signaling.
  • the UE may obtain the first mapping relationship and/or the second mapping relationship by using the second signaling, and the UE may also obtain the first mapping relationship and/or the second mapping relationship by using an implicit rule. For example, as shown in FIG. 5, the search space corresponding to the antenna port 7 occupies a part of the time-frequency resources of the RB pair 0, 1, 2, N-3, N-2, and Nl, and the search space corresponding to the antenna port 8 occupies Another part of the time-frequency resource of the RB pair, for example, as shown in FIG.
  • the search space corresponding to the antenna port 7 occupies the first slot time-frequency resource of the RB pair 0, 1, and 2, and the antenna port 8 corresponds to The search space occupies the second slot time-frequency resource of the RB pair 0, 1, and 2. If the UERS of the UE is configured as the antenna port 7, the UE can obtain the search corresponding to the antenna port 7 according to the implicit rule. space.
  • the user equipment may determine the search space of the control channel according to the time-frequency resource information, the third mapping relationship between the first information and the search space, and the time-frequency resource information and the first information. .
  • the third mapping relationship between the information and the search space is a user equipment specific mapping relationship. That is, the first mapping relationship or the second mapping relationship is different for different user equipments.
  • the search space of the control channel determined by the user equipment may be distinguished by at least one of a time resource, a frequency resource, or a space resource.
  • the search space corresponding to antenna ports 7 and 8 is differentiated by time-frequency resources, that is, the search space corresponding to antenna port 7 occupies RB pairs 0, 1, and 2 The first half of the RBs, and the RBs of the last half of the N-3, N-2, and N1 RBs; and the search space corresponding to the antenna port 8 occupies the second half of the RB pairs 0, 1, and 2, and the RB The first half of the RB for N-3, N-2, Nl.
  • the aggregation level is 1 RB as an example, as shown in FIG. 5, that is, when the search space corresponding to the antenna port 7 occupies part of the RB pair 0, 1, 2, N-3, N-2, and N1
  • the frequency resource, and the search space corresponding to the antenna port 8 occupies another part of the time-frequency resource of the RB pair.
  • each candidate E-PDCCH resource with an aggregation level of one RB occupies two partial RBs, where each partial RB is part of one RB frequency fraction, and the UE is configured with E-PDCCH.
  • the minimum unit of signaling of the time-frequency resource is one RB or one RB pair, so the UE needs to determine the final search space according to the correspondence between the UERS configuration information and the E-PDCCH search space.
  • the method of dividing the above one RB into a plurality of parts of the RB is not limited.
  • Other candidate E-PDCCH resources larger than the aggregation level of one RB may also be divided into multiple parts by the RB.
  • Other ways of distinguishing multiple search spaces are not limited. For example, search spaces A and B can occupy the same time-frequency resources, but are distinguished by spatial information such as different UERS antenna ports.
  • the user equipment determines, according to the time-frequency resource information and the first information, a search space of the control channel, where at least one control channel in the search space occupies each of the at least two resource blocks RB. Part of the resources of RB.
  • the control channel can be increased, and in particular, the aggregation level is relatively small, and the frequency diversity gain of the control channel can be increased.
  • the control channel B occupies a part of the resources of the first RB in the RB pair 1, and the part of the resources may be the upper half of the first RB, the upper half of the RB; or The lower half of the first RB is the following half of the RB; the control channel B also occupies a part of resources of the second RB of the RB pair N-2, and the part of the resource may be the upper half of the second RB Part of the resource, the upper half of the RB; or the lower half of the second RB Sub-resources, the following half RB.
  • the control channel C occupies the first half of the RB pair 2
  • the control channel C also occupies the second half of the RB pair N-1.
  • the user equipment determines, according to the time-frequency resource information and the first information, a search space of the control channel, where at least one control channel in the search space occupies part or all resources of at least two RBs.
  • the at least two RBs occupy a first time slot and a second time slot of one subframe.
  • the control channel occupies a part of the resources of the at least two RBs, where the RB resources are divided in a frequency division manner, and some resources of the at least two RBs are time-division For example, occupy two time slots respectively.
  • the RB intervals between the resources of the at least two RBs are equal.
  • the user equipment determines, according to the time-frequency resource information and the first information, a search space of the control channel, where the first part of the first control channel in the search space occupies the RB or the RB pair.
  • the sequence number is i
  • the sequence number of the RB or RB pair occupied by the second part of the first control channel is N + i _ N ⁇ / M , where M is a natural number, and Ncan is the aggregation level included in the search space of the control channel.
  • the number of corresponding control channels, N is the number of RB or RB pairs corresponding to the time-frequency resource information, or N is equal to the Ncan.
  • the sequence number of the RB pair occupied by the second part of the candidate control channel is N-2.
  • the method for receiving a control channel can determine the search space of the control channel according to the time-frequency resource information of the control channel and the first information, so that the control channel can be received and transmitted, and can be expanded.
  • Control channel capacity improve system scheduling efficiency and flexibility, and further enhance the user experience.
  • the user equipment determines the search space of the control channel according to the time-frequency resource information and the first information, where the search space further includes: the search space occupied by the control channel
  • the number of candidate control channels of the current user equipment included in the first resource unit is less than or equal to the total number of candidate control channels that can be included in the first resource unit, and the candidate control channel is an aggregation level candidate control channel and/or Or the candidate control channel is a candidate control channel of configuration information of at least one UERS. It further includes:
  • the first resource unit occupied by the search space of the control channel includes all or part of a candidate control channel of the user equipment, the candidate control channel is an aggregation level candidate control channel and/or the candidate control channel is A candidate control channel for UERS configuration information.
  • the first resource unit may be a B, an RB pair, an RB group or an RB pair group.
  • the RB group or the RB pair group may be a group of RBs or RB pairs that the base station notifies the user equipment to perform joint channel estimation, that is, when the base station sends the E-PDCCH to the user equipment in the RB group or the RB pair group.
  • the precoding matrix is the same.
  • the aggregation level may include 1, 2, 4 or other number of first control channel elements, etc., i.e., one candidate control channel may be comprised of 1, 2 or 4 or other number of first control channel elements.
  • the first control channel unit may be a Control Channel Element (CCE) of a PDCCH in an existing LTE system, or may be measured by other units, such as an RB, a half RB, or Other control channel units and the like are not limited herein.
  • CCE Control Channel Element
  • the aggregation level is 1 and 2
  • the first control channel unit is a CCE
  • the first resource unit is an RB pair.
  • the other cases are similar, and are not limited herein.
  • the time-frequency resource of the E-PDCCH allocated to the UE is 4 RB pairs, which is specifically represented as RB pair 0, 1, 2, 3.
  • the CCE labels on the four RB pairs may be assumed to be a total of 16 CCEs, 0, 1, and 15; and the UERS configuration of the UE is assumed to be Antenna port 7 and scrambling code identification 0; it is also assumed that the number of candidate E-PDCCHs in the search space of the aggregation level of 1, 2, and 4 CCEs of the UE is 4, other aggregation levels, UERS configuration information, and
  • the number of candidate E-PDCCHs is not limited.
  • the starting point of the search space starts from CCE 0 of RB 0. If the four candidate E-PDCCHs of one CCE aggregation level of the UE are CCE 0, 1, 2, 3, respectively, the E-PDCCH blocking probability is increased. Specifically, if another UE having the same UERS configuration as the UE occupies any one of CCEs 0, 1, 2, 3, then the 4 CCEs are unavailable for the UE because there is a UERS conflict.
  • the UERS of the UE occupies the entire RB pair; conversely, if another UE having a different UERS configuration with the UE occupies any one of CCEs 0, 1, 2, 3, then the four CCEs The other three unoccupied CCEs are available to the UE and are therefore separated by UEs through different UERS configurations. Therefore, it is not necessary for the candidate E-PDCCH of the UE to occupy the entire RB pair.
  • One solution is, one RB The number of candidate E-PDCCHs of the UE on the pair is smaller than the total number of candidate E-PDCCHs of the same aggregation level that can be carried on the RB pair.
  • the four candidate E-PDCCHs of the UE may occupy CCE 0,1 and CCE 4,5, respectively, thus alleviating the conflict of the E-PDCCH. More preferably, the four candidate E-PDCCHs of the UE may occupy CCEs 0, 4, 8, 12 respectively, that is, for a specific aggregation level and a specific UERS configuration, each RB pair includes only one candidate E- of the UE. PDCCH.
  • one candidate E-PDCCH may be mapped onto multiple RB or RB pairs to obtain a frequency diversity gain.
  • the above solution may be that for a specific aggregation level and a specific UERS configuration, only one part of one candidate E-PDCCH of the UE is included in one RB pair.
  • an RB pair includes each part of the N candidate E-PDCCHs of the UE, where N is smaller than the total number of candidate E-PDCCHs of the same aggregation level that can be carried on the RB pair.
  • the RB pair includes a part of the first candidate E-PDCCH and a part of the second candidate E-PDCCH whose aggregation level is one CCE, and the RB pair can be carried on the RB pair.
  • the number of candidate E-PDCCHs of this aggregation level is 4.
  • the search space of the E-PDCCH with the aggregation level of CCEs is considered.
  • the four candidate E-PDCCHs of the UE may occupy CCEs ⁇ 0, 1 ⁇ , ⁇ 4, 5 ⁇ , ⁇ 8, 9 ⁇ , and ⁇ 12, respectively. 13 ⁇ , that is, the number of candidate E-PDCCHs included in one RB pair is smaller than the total number of candidate E-PDCCHs that the RB pair can bear, or further, one RB pair contains at most one candidate E-PDCCH or section.
  • the search space of the E-PDCCH with an aggregation level of 4 CCEs is considered.
  • the 4 candidate E-PDCCHs of the UE may occupy RB pairs 0, 1, 2, and 3, that is, candidate E-PDCCHs included in one RB pair.
  • the number is equal to the number of candidate E-PDCCHs of the aggregation level that can be carried in the RB pair.
  • the candidate E-PDCCH that is used by the UE to search for the control channel unit on the RB pair to search for the UE may be determined by using the first information in the foregoing embodiment.
  • the first information is the UERS configuration information as an example.
  • the control channel unit occupied by the UE on one RB pair has a corresponding relationship with the UERS configuration information of the UE, and the correspondence relationship and the UERS configuration information of the UE can be determined.
  • the UE searches for the control channel unit specifically occupied by an RB pair.
  • Candidate E-PDCCH for UE The above embodiment can be extended to the base station side:
  • a method for transmitting a control channel includes:
  • the control channel is transmitted to the user equipment in the search space.
  • the number of candidate control channels of the current user equipment included in the first resource unit occupied by the search space of the control channel is less than or equal to the total number of candidate control channels that can be included in the first resource unit, and the candidate control channel is an aggregation.
  • the candidate control channel of the level and/or the candidate control channel is a candidate control channel of configuration information of the UERS.
  • the first resource unit occupied by the search space of the control channel includes all or part of at most one candidate control channel of the current user equipment, the candidate control channel is an aggregation level candidate control channel, and/or the candidate control channel is A candidate control channel for UERS configuration information.
  • a user equipment including:
  • An acquiring module configured to acquire time-frequency resource information of the control channel and the first information
  • the determining module is configured to determine, according to the time-frequency resource information and the first information acquired by the acquiring module, the search of the control channel Space
  • a first receiving module configured to receive the control channel in the search space determined by the determining module.
  • the determining module includes:
  • the number of candidate control channels of the current user equipment included in the first resource unit occupied by the search space of the control channel is less than or equal to the total number of candidate control channels that can be included in the first resource unit, and the candidate control channel is an aggregation.
  • the candidate control channel of the level and/or the candidate control channel is a candidate control channel of configuration information of the UERS.
  • the first resource unit occupied by the search space of the control channel includes one of the user equipments All or part of the candidate control channel, the candidate control channel is an aggregation level candidate control channel and/or the candidate control channel is a candidate control channel of UERS configuration information.
  • a base station comprising:
  • An acquiring module configured to acquire time-frequency resource information of the control channel and the first information
  • the determining module is configured to determine, according to the time-frequency resource information and the first information acquired by the acquiring module, the search of the control channel Space
  • a first sending module configured to send the control channel to the user equipment in the search space determined by the determining module.
  • the determining module includes:
  • the number of candidate control channels of the user equipment included in the first resource unit occupied by the search space of the control channel is less than or equal to the total number of candidate control channels that can be included in the first resource unit, and the candidate control channel is an aggregation.
  • the candidate control channel of the level and/or the candidate control channel is a candidate control channel of configuration information of the UERS.
  • the first resource unit occupied by the search space of the control channel includes all or part of a candidate control channel of the user equipment, the candidate control channel is an aggregation level candidate control channel and/or the candidate control channel is A candidate control channel for UERS configuration information.
  • a method for receiving a control channel according to an embodiment of the present invention is described in detail from the perspective of a user equipment. Referring to FIG. 7 , FIG. 8A and FIG. 8B , the implementation according to the present invention will be described from the perspective of a base station. A method of transmitting control information.
  • FIG. 7 shows a schematic flow diagram of a method 300 of transmitting a control channel in accordance with an embodiment of the present invention. As shown in FIG. 7, the method 300 includes:
  • the search space of the control channel can be determined according to the time-frequency resource information of the control channel and the first information, so that the control channel can be received and transmitted, and can be expanded.
  • Control channel capacity improve system tuning Efficiency and flexibility, as well as the ability to further enhance the user experience.
  • the base station before configuring the time-frequency resource and the first information of the control channel for the UE, the base station needs to acquire the time-frequency resource and the UERS configuration information included in the first information and/or the location information of the search space.
  • the base station may configure the control channel of the UE to a time-frequency resource with a better channel state according to the channel state of the UE, or the base station may also configure according to the interference condition of the neighboring cell.
  • the time-frequency resource may be configured to acquire the time-frequency resource and the UERS configuration information included in the first information and/or the location information of the search space.
  • the base station may select the number of antenna ports of the UE according to the channel state of the UE, and coordinate the corresponding antenna port number and the scrambling code information according to the situation of multiple UEs in the cell.
  • the base station may be configured according to the time-frequency resources of the control channel of the UE, the UERS configuration information, and/or the load condition on the time-frequency resource.
  • the base station may send the first signaling to the user equipment, where the first signaling includes the time-frequency resource information and the first information, so that the user equipment is configured according to the time-frequency resource information and the first Information, determine the control channel search space.
  • the time-frequency resource information and the first information may also be statically configured to the user equipment.
  • the first information includes configuration information of a user equipment specific reference signal UERS for transmitting the control channel, and/or location information of the search space.
  • the base station may determine a search space of the control channel according to the time-frequency resource information and the first information.
  • the base station may determine, according to the time-frequency resource information, the first mapping relationship between the time-frequency resource information and the search space resource, and the location information, the search space of the control channel; And determining, according to the time-frequency resource information, the first mapping relationship between the time-frequency resource information and the search space resource, and the configuration information, the search space corresponding to the configuration information. Description will be made below in conjunction with Figs. 8A and 8B, respectively.
  • the method 400 for determining, by the base station, the search space of the control channel includes:
  • the base station determines the search space resource according to the time-frequency resource information, and the first mapping relationship between the time-frequency resource information and the search space resource.
  • the base station determines, according to the location information, a search space of the control channel in the search space resource.
  • the method 400 for determining a search space of a control channel may also include:
  • the base station according to the time-frequency resource information, and the time-frequency resource information and the search space resource.
  • the base station determines, according to the second mapping relationship between the configuration information and the search space, and/or the configuration information, the search space corresponding to the configuration information in the search space resource.
  • the base station sends the second signaling to the user equipment, where the second signaling includes the first mapping relationship and/or the second mapping relationship, so that the user equipment determines the control channel. Search space.
  • the base station may further determine, according to the time-frequency resource information, the third mapping relationship between the first information and the search space, and the time-frequency resource information and the first information. Control channel search space.
  • the first mapping relationship between the time-frequency resource information and the search space optionally, the second mapping relationship between the configuration information and the search space, or the time-frequency resource information, the configuration information, and the search space
  • the third mapping relationship between the two is a user equipment specific mapping relationship. That is, the first mapping relationship or the second mapping relationship is different for different user equipments.
  • the search space of the control channel determined by the base station may be distinguished by at least one of a time resource, a frequency resource, or a space resource. Since the search space occupies the same time-frequency resource by means of spatial division, the utilization efficiency of resources can be improved.
  • the base station determines, according to the time-frequency resource information and the first information, a search space of the control channel, where at least one control channel in the search space occupies each of the at least two resource blocks RB. Part of the resources.
  • the base station determines, according to the time-frequency resource information and the first information, a search space of the control channel, where at least one control channel in the search space occupies part or all resources of at least two RBs, where At least two RBs occupy a first time slot and a second time slot of one subframe.
  • the control channel occupies a part of the resources of the at least two RBs, where the RB resources are divided in a frequency division manner, and some resources of the at least two RBs are time-division For example, occupy two time slots respectively.
  • the RB intervals between the resources of the at least two RBs are equal.
  • the base station determines, according to the time-frequency resource information and the first information, the search space of the control channel, where the sequence number of the RB occupied by the first part of the first control channel in the search space is i
  • the sequence number of the RB occupied by the second part of the first control channel is N + i _ ⁇ an / M , where M is a natural number, and Ncan is the control space included in the control channel.
  • the number of control channels corresponding to the aggregation level, N is the number of RB or RB pairs corresponding to the time-frequency resource information, or N is equal to the Ncan.
  • the search space of the control channel can be determined according to the time-frequency resource information of the control channel and the first information, so that the control channel can be received and transmitted, and can be expanded.
  • Control channel capacity improve system scheduling efficiency and flexibility, and further enhance the user experience.
  • FIG. 9 shows a schematic block diagram of a user equipment 600 in accordance with an embodiment of the present invention.
  • the user equipment 600 includes:
  • the obtaining module 610 is configured to acquire time-frequency resource information of the control channel and the first information
  • the determining module 620 is configured to determine, according to the time-frequency resource information acquired by the acquiring module 610 and the first information, a search space of the control channel.
  • the first receiving module 630 is configured to receive the control channel in the search space determined by the determining module 620.
  • the user equipment in the embodiment of the present invention can determine the search space of the control channel according to the time-frequency resource information of the control channel and the first information, so that the control channel can be received and transmitted, and the capacity of the control channel can be expanded. Improve system scheduling efficiency and flexibility, and further enhance the user experience.
  • the user equipment 600 further includes:
  • the second receiving module 640 is configured to receive first signaling sent by the base station, where the first signaling includes the time-frequency resource information and the first information;
  • the first obtaining module 610 is further configured to obtain the time-frequency resource information and the first information according to the first signaling received by the second receiving module 640.
  • the first information acquired by the acquiring module 610 includes configuration information for receiving the user equipment specific reference signal UERS of the control channel, and/or location information of the search space.
  • the determining module 620 includes:
  • the first determining sub-module 621 is configured to determine the search space according to the time-frequency resource information, the first mapping relationship between the time-frequency resource information and the search space resource, and the location information.
  • the determining module 620 further includes:
  • the second determining sub-module 622 is configured to determine, according to the time-frequency resource information, the first mapping relationship between the time-frequency resource information and the search space resource, and the configuration information, the search space corresponding to the configuration information.
  • the first determining submodule 621 includes:
  • a first determining unit 625 configured to determine, according to the time-frequency resource information and the first mapping relationship, the search space resource
  • the second determining unit 626 is configured to determine the search space in the search space resource determined by the first determining unit 625 according to the location information.
  • the second determining submodule 622 includes:
  • a first determining unit 625 configured to determine, according to the time-frequency resource information and the first mapping relationship, the search space resource
  • the third determining unit 627 is configured to determine, according to the second mapping relationship of the configuration information and the search space, and/or the configuration information, the search space resource determined by the first determining unit 625, corresponding to the configuration information.
  • the search space is configured to determine, according to the second mapping relationship of the configuration information and the search space, and/or the configuration information, the search space resource determined by the first determining unit 625, corresponding to the configuration information.
  • the first mapping relationship or the second mapping relationship that is determined by the determining module 620 is a user equipment-specific mapping relationship.
  • the determining module 620 is further configured to: determine, according to the time-frequency resource information and the first information, the search space, where at least one control channel in the search space occupies at least two resources. Part of the resources of each RB in the block RB.
  • the determining module 620 is further configured to: determine, according to the time-frequency resource information and the first information, the search space, where at least one control channel in the search space occupies at least two RBs. Part or all of the resources, the at least two RBs occupy the first time slot and the second time slot of one subframe.
  • the determining module 620 is further configured to: determine, according to the time-frequency resource information and the first information, the search space, where the first part of the first control channel in the search space occupies resources
  • the sequence number of the RB is i
  • the sequence number of the RB occupied by the second part of the first control channel is N + i _ N ⁇ / M , where M is a natural number
  • Ncan is the aggregation level included in the search space of the control channel.
  • the number of corresponding control channels, N is the time-frequency resource information
  • the number of corresponding RB or RB pairs, or N equals the Ncan.
  • the control channel occupies a part of the resources of the at least two RBs, where the RB resources are divided in a frequency division manner, and some resources of the at least two RBs are time-division For example, occupy two time slots respectively.
  • the RB intervals between the resources of the at least two RBs are equal.
  • the user equipment 600 may correspond to the user equipment UE in the method of receiving and transmitting a control channel according to an embodiment of the present invention, and the above and other operations of the respective modules in the user equipment 600 and/or The functions are respectively implemented in order to implement the corresponding processes of the respective methods in FIG. 2 to FIG. 6, and are not described herein again.
  • the user equipment in the embodiment of the present invention can determine the search space of the control channel according to the time-frequency resource information of the control channel and the first information, so that the control channel can be received and transmitted, and the control channel can be expanded. Capacity, improve system scheduling efficiency and flexibility, and further enhance the user experience.
  • FIG 13 shows a schematic block diagram of a base station 800 in accordance with an embodiment of the present invention.
  • the base station 800 includes:
  • the obtaining module 810 is configured to acquire time-frequency resource information of the control channel and the first information
  • the determining module 820 is configured to determine, according to the time-frequency resource information acquired by the acquiring module 810 and the first information, a search space of the control channel.
  • the first sending module 830 is configured to send the control channel to the user equipment in the search space determined by the determining module 820.
  • the base station can determine the search space of the control channel according to the time-frequency resource information and the first information of the control channel, thereby enabling reception and transmission of the control channel, and expanding the capacity of the control channel and improving System scheduling efficiency and flexibility, as well as the ability to further enhance the user experience.
  • the base station 800 further includes: a second sending module 840, configured to send first signaling to the user equipment, where the first signaling includes the time-frequency The resource information and the first information, so that the user equipment determines the search space of the control channel according to the time-frequency resource information and the first information.
  • a second sending module 840 configured to send first signaling to the user equipment, where the first signaling includes the time-frequency The resource information and the first information, so that the user equipment determines the search space of the control channel according to the time-frequency resource information and the first information.
  • the first information acquired by the acquiring module 810 includes configuration information of a user equipment specific reference signal UERS for transmitting the control channel, and/or location information of the search space.
  • the determining module 820 includes: a first determining submodule 821, configured to use, according to the time-frequency resource information, the time-frequency resource information, and the search space resource. A mapping relationship and the location information determine the search space.
  • the determining module 820 further includes:
  • the second determining sub-module 822 is configured to determine, according to the time-frequency resource information, the first mapping relationship between the time-frequency resource information and the search space resource, and the configuration information, the search space corresponding to the configuration information.
  • the first determining submodule 821 includes:
  • a first determining unit 825 configured to determine, according to the time-frequency resource information and the first mapping relationship, the search space resource
  • the second determining unit 826 is configured to determine the search space in the search space resource determined by the first determining unit 825 according to the location information.
  • the second determining submodule 822 includes:
  • a first determining unit 825 configured to determine, according to the time-frequency resource information and the first mapping relationship, the search space resource
  • the third determining unit 827 is configured to determine, according to the second mapping relationship of the configuration information and the search space, and/or the configuration information, the search space resource determined by the first determining unit 825, corresponding to the configuration information.
  • the search space is configured to determine, according to the second mapping relationship of the configuration information and the search space, and/or the configuration information, the search space resource determined by the first determining unit 825, corresponding to the configuration information.
  • the base station 800 further includes: a third sending module, configured to send, to the user equipment, the second signaling, where the second signaling includes the first mapping relationship and/or the second mapping relationship, to facilitate the user
  • the device determines the control channel search space.
  • the determining module 820 is further configured to determine, according to the time-frequency resource information, a third mapping relationship between the first information and the search space, and the time-frequency resource information and the first information, determine the control channel search. space.
  • the first mapping relationship, the second mapping relationship, or the third mapping relationship according to the determining module 820 is a mapping relationship specific to the user equipment.
  • the determining module 820 is further configured to: determine, according to the time-frequency resource information and the first information, the search space, where at least one control channel in the search space occupies at least two resources. Part of the resources of each RB in the block RB. In the embodiment of the present invention, the determining module 820 is further configured to: determine, according to the time-frequency resource information and the first information, the search space, where at least one control channel in the search space occupies at least two RBs. Part or all of the resources, the at least two RBs occupy the first time slot and the second time slot of one subframe.
  • the determining module 820 is further configured to: determine, according to the time-frequency resource information and the first information, the search space, where the first part of the first control channel in the search space is occupied by resources
  • the sequence number of the RB is i
  • the sequence number of the RB occupied by the second part of the first control channel is N + i _U M , where M is a natural number
  • Ncan is the control corresponding to the aggregation level included in the search space of the control channel.
  • the number of channels, N is the number of RB or RB pairs corresponding to the time-frequency resource information, or N is equal to the Ncan.
  • the control channel occupies a part of the resources of the at least two RBs, where the RB resources are divided in a frequency division manner, and some resources of the at least two RBs are time-division For example, occupy two time slots respectively.
  • the RB intervals between the resources of the at least two RBs are equal.
  • the base station 800 may correspond to the base station eNB in the method of receiving and transmitting a control channel according to an embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the base station 800 are respectively The corresponding processes of the various methods in FIG. 7 and FIG. 8 are implemented, and are not described here.
  • the base station can determine the search space of the control channel according to the time-frequency resource information of the control channel and the first information, thereby enabling reception and transmission of the control channel, and expanding the capacity of the control channel. Improve system scheduling efficiency and flexibility, and further enhance the user experience.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the components displayed as units may or may not be physical units, i.e., may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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Abstract

本发明公开了一种接收和发送控制信道的方法、用户设备和基站。该接收控制信道的方法包括:获取控制信道的时频资源信息以及第一信息;根据该时频资源信息和该第一信息,确定该控制信道的搜索空间;在该搜索空间中接收该控制信道。本发明实施例的方法、用户设备和基站,通过根据控制信道的时频资源信息以及第一信息,能够确定控制信道的搜索空间,因而能够实现对该控制信道进行接收和发送,并能够扩大控制信道的容量,提高系统调度效率和灵活性,以及能够进一步提高用户体验。

Description

接收和发送控制信道的方法、 用户设备和基站 本申请要求于 2011 年 11 月 4 日提交中国专利局、 申请号为 201110346048.4、 发明名称为 "接收和发送控制信道的方法、 用户设备和基 站,, 以及的 2012年 1月 10日提交中国专利局、 申请号为 201210006086.x、 发明名称为 "接收和发送控制信道的方法、 用户设备和基站" 中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信领域, 尤其涉及通信领域中接收和发送控制信道的方 法、 用户设备和基站。 背景技术
在长期演进(Long Term Evolution, 筒称为 "LTE" )系统中, 演进基站 ( evolved NodeB, 筒称为 "eNB" )调度的最小时间单位是一个子帧, 每个 子帧包括两个时隙, 每个时隙又包括 7个符号。 对于一个子帧上被调度到 的用户设备 ( User Equipment , 筒称为 "UE" ) 而言, 在该子帧上会包括该 UE 的物理下行控制信道(Physical Downlink Control Channel , 筒称为 "PDCCH" )。 该 PDCCH用于承载被调度的 UE的调度信息, 该调度信息 包括为 UE分配的物理信道资源及具体使用的调制编码方式(Modulation and Codec Scheme, 筒称为 "MCS" )信息等。
在目前的 LTE 系统中, PDCCH与物理下行共享信道 ( Physical Downlink Shared Channel, 筒称为 "PDSCH" ) 以时分的方式存在于一个子帧中, 其 中, PDCCH 7 载在一个子帧的前 n个符号内, n可以为 1、 2、 3、 4中的一 种, 而 PDSCH调度的下行数据从该子帧的第 n+1个符号开始映射。在频域 上, PDCCH和 PDSCH通过交织处理后打散到整个系统的带宽上, 以获得 频率分集增益。 UE基于小区特定参考信号 ( Cell-specific Reference Signal, 筒称为 "CRS" ), 在 PDCCH的搜索空间内根据 PDCCH的载荷大小和聚合 水平对 PDCCH进行解调、解码后,用该 UE特定的无线网络临时标识( Radio Network Temporary Identity, 筒称为 "RNTI" )或身份标识, 解扰循环冗余 校验 ( Cyclical Redundancy Check, 筒称为 "CRC" )以校验并确定该 UE的 PDCCH, 并根据该 PDCCH中的调度信息对其所调度的数据做相应的接收 或发送处理。
在当前及后续版本的 LTE 系统中, 多用户多输入多输出 ( Multiple Input Multiple Output,筒称为 "MIMO" )和协作多点( Coordinated Multiple Points, 筒称为 "CoMP" )等技术的引入使得控制信道的容量受限, 因此会引入基 于 MIMO 预编码方式传输的 PDCCH , 即增强的物理下行控制信道 ( Enhanced PDCCH, 筒称为 "E-PDCCH" )。 UE可以基于 UE特定参考信 号 (UE-specific Reference Signal, 筒称为 "UERS" )来解调 E-PDCCH。 由于 E-PDCCH的传输引入了 UERS的解调方式, 因此,需要合适的方案能 够实现对该控制信道进行接收和发送。 发明内容
本发明实施例提供了一种接收和发送控制信道的方法、 用户设备和基站, 能够实现控制信道的接收和发送。
一方面, 本发明实施例提供了一种接收控制信道的方法, 该方法包括: 获 取控制信道的时频资源信息以及第一信息; 根据该时频资源信息和该第一 信息, 确定该控制信道的搜索空间; 在该搜索空间中接收该控制信道。。 另一方面, 本发明实施例提供了一种发送控制信道的方法, 该方法包括: 获取控制信道的时频资源信息以及第一信息; 根据该时频资源信息和该第 一信息, 确定该控制信道的搜索空间; 在该搜索空间中向用户设备发送该 控制信道。
再一方面, 本发明实施例提供了一种用户设备, 该用户设备包括: 获取模 块, 用于获取控制信道的时频资源信息以及第一信息; 确定模块, 用于根 据该获取模块获取的该时频资源信息和该第一信息, 确定该控制信道的搜 索空间; 接收模块, 用于在该确定模块确定的该搜索空间中接收该控制信 道。
再一方面, 本发明实施例提供了一种基站, 该基站包括: 获取模块, 用于 获取控制信道的时频资源信息以及第一信息; 确定模块, 用于根据该获取 模块获取的该时频资源信息和该第一信息, 确定该控制信道的搜索空间; 第一发送模块, 用于在该确定模块确定的该搜索空间中, 向用户设备发送 该控制信道。 基于上述技术方案, 本发明实施例的接收和发送控制信道的方法、 用户设 备和基站, 通过根据控制信道的时频资源信息以及第一信息, 能够确定控 制信道的搜索空间, 因而能够实现对该控制信道进行接收和发送, 并能够 扩大控制信道的容量, 提高系统调度效率和灵活性, 以及能够进一步提高 用户体马 。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对本发明实施例 中所需要使用的附图作筒单地介绍, 显而易见地, 下面所描述的附图仅仅 是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性 劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1是根据本发明实施例的资源块和资源块对的示意性框图。
图 2是根据本发明实施例的接收控制信道的方法的示意性流程图。 图 3是根据本发明实施例的接收控制信道的方法的另一示意性流程图。 图 4A和 4B是根据本发明实施例的确定搜索空间的方法的示意性流程 图。
图 5是根据本发明实施例的搜索空间的示意性映射图。
图 6是根据本发明实施例的搜索空间的另一示意性映射图。
图 7是根据本发明另一实施例的发送控制信道的方法的示意性流程图。 图 8 A和 8B是根据本发明另一实施例的确定搜索空间的方法的示意性 流程图。
图 9是根据本发明实施例的用户设备的示意性框图。
图 10是根据本发明实施例的用户设备的另一示意性框图。
图 11是根据本发明实施例的用户设备的再一示意性框图。
图 12A是根据本发明实施例的第一确定子模块的示意性框图。
图 12B是根据本发明实施例的第二确定子模块的示意性框图。
图 13是根据本发明实施例的基站的示意性框图。
图 14是根据本发明实施例的基站的另一示意性框图。
图 15是根据本发明实施例的基站的再一示意性框图。
图 16A是根据本发明实施例的第一确定子模块的示意性框图。
图 16B是根据本发明实施例的第二确定子模块的示意性框图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进 行清楚、 完整地描述, 显然, 所描述的实施例是本发明的一部分实施例, 而不是全部实施例。 基于本发明中的实施例, 本领域普通技术人员在没有 做出创造性劳动的前提下所获得的所有其他实施例, 都应属于本发明保护 的范围。
应理解, 本发明实施例的技术方案可以应用于各种通信系统, 例如: 全球移动通讯 ( Global System of Mobile communication, 筒称为 "GSM" ) 系统、 码分多址 ( Code Division Multiple Access , 筒称为 "CDMA" ) 系统、 宽带码分多址( Wideband Code Division Multiple Access,筒称为 "WCDMA" ) 系统、 通用分组无线业务( General Packet Radio Service, 筒称为 "GPRS" )、 长期演进(Long Term Evolution , 筒称为 "LTE" ) 系统、 LTE 频分双工 ( Frequency Division Duplex, 筒称为 "FDD" ) 系统、 LTE时分双工(Time Division Duplex, 筒称为 "TDD" )、 通用移动通信系统( Universal Mobile Telecommunication System,筒称为 "UMTS" )、全球互联微波接入( Worldwide Interoperability for Microwave Access, 筒称为 "WiMAX" )通信系统等。
还应理解,在本发明实施例中,用户设 User Equipment,筒称为 "UE" ) 可称之为终端(Terminal ), 移动台 ( Mobile Station, 筒称为 "MS" )、 移动 终端 ( Mobile Terminal )等, 该用户设备可以经无线接入网 ( Radio Access Network, 筒称为 "RAN" ) 与一个或多个核心网进行通信, 例如, 用户设 备可以是移动电话(或称为 "蜂窝,, 电话)、 具有移动终端的计算机等, 例 如, 用户设备还可以是便携式、 袖珍式、 手持式、 计算机内置的或者车载 的移动装置, 它们与无线接入网交换语音和 /或数据。
在本发明实施例中, 基站可以是 GSM 或 CDMA 中的基站 (Base
Transceiver Station, 筒称为 "BTS" ),也可以是 WCDMA中的基站( NodeB, 筒称为 "NB" ), 还可以是 LTE中的演进型基站( Evolutional Node B , 筒称 为 'ΈΝΒ或 e-NodeB" ), 本发明并不限定。 但为描述方便, 下述实施例将 以基站 eNB和用户设备 UE为例进行说明。
应理解, E-PDCCH位于一个子帧的传输下行数据的区域, 不在一个子 帧的前 n个符号的控制区域, 并且 E-PDCCH与 PDSCH以频分的方式位于 该传输下行数据的区域, 即 E-PDCCH 与 PDSCH 占用不同的资源块 ( Resource Block, 筒称为 "RB" )。 例如, 对于聚合水平为 1、 2、 4或 8的 E-PDCCH, 分别需要占用 1、 2、 4或 8个 RB。 如图 1所示, 一个 RB在频 域上占用 12个子载波, 在时域上占用半个子帧, 即一个时隙, 例如, RB0 占用时隙 0, RB1占用时隙 1 , 而一个 RB对 ( RB Pair )在频域上与 RB— 样, 占用 12个子载波, 但在时域上占用一个完整的子帧。
图 2示出了根据本发明实施例的接收控制信道的方法 100的示意性流 程图。 如图 2所示, 该方法 100包括:
S 110 , 获取控制信道的时频资源信息以及第一信息;
S120, 根据该时频资源信息和该第一信息, 确定该控制信道的搜索空 间;
S130, 在该搜索空间中接收该控制信道。
为了能够接收控制信道, 用户设备可以获取控制信道的时频资源信息 以及第一信息, 并可以根据该时频资源信息和该第一信息, 确定该控制信 道的搜索空间, 从而用户设备可以在该控制信道的搜索空间中接收该控制 信道。
因此, 本发明实施例的接收控制信道的方法, 通过根据控制信道的时 频资源信息以及第一信息, 能够确定控制信道的搜索空间, 因而能够实现 对该控制信道进行接收和发送, 并能够扩大控制信道的容量, 提高系统调 度效率和灵活性, 以及能够进一步提高用户体验。
在本发明实施例中, 应理解, 用户设备在搜索空间中接收控制信道可 以包括: 用户设备在所确定的控制信道的搜索空间中进行盲检测, 并在检 测到该用户设备的控制信道后接收该控制信道。 还应理解, 用户设备在接 收到控制信道后, 可以根据该控制信道承载的控制信令, 通过该控制信令 指示的数据信道进行数据的接收或发送。
应理解, 本发明实施例将以控制信道包括增强的物理下行控制信道
E-PDCCH为例进行说明, 但本发明实施例并不限于此。
在本发明实施例中, 如图 3所示, 根据本发明实施例的接收控制信道 的方法 100还可以包括:
S140, 用户设备接收基站发送的第一信令, 该第一信令包括该时频资 源信息和该第一信息; 此时 S110具体包括: 用户设备根据该第一信令获取该时频资源信息和 该第一信息。
在 S140 中, 第一信令可以是高层信令, 例如无线资源控制 (Radio Resource Control, 筒称为 "RRC" )信令或媒体接入控制 (Media Access Control, 筒称为 "MAC" )信令; 该第一信令也可以是物理层信令, 例如 PDCCH信令或其它物理层信令。
应理解, 该第一信令可以包括一条信令, 也可以包括多条信令, 即基 站可以通过一条信令, 也可以通过至少两条信令将时频资源信息和第一信 息发送给用户设备。 当基站通过至少两条信令传输时频资源信息和第一信 息时, 该至少两条信令中的每一条信令可以承载全部的或一部分的时频资 源信息或第一信息, 也可以承载时频资源信息和第一信息的一部分, 本发 明实施例并不限于此。
在 S110中, 用户设备获取时频资源信息和第一信息。 在本发明实施例 中, 时频资源信息用于指示控制信道的时频资源, 例如该时频资源信息可 以是 RB或 RB对的集合。 以该时频资源信息为一个 RB对集合为例, 控制 信道的时频资源可以是一组 RB对, 其中包含至少一个 RB对, 该至少一个 RB对中的每个 RB对在物理资源上可以连续,也可以非连续。用户设备 UE 的 E-PDCCH可以占用该 RB对集合中的至少一个 RB或 RB对。
在本发明实施例中, 可选地, 该第一信息包括用于接收该控制信道的 用户设备特定参考信号 UERS的配置信息, 和 /或该搜索空间的位置信息。 应理解,用户设备特定参考信号 UERS用于解调用户设备的控制信道, UERS 的配置信息可以包括该 UERS的天线端口号、 天线端口对应的扰码、 天线 端口的数目等信息。
在 S120中, 用户设备可以根据该时频资源信息和该第一信息, 确定该 控制信道的搜索空间。 可选地, 在本发明实施例中, 用户设备可以根据该 时频资源信息、 该时频资源信息与搜索空间资源的第一映射关系以及该位 置信息, 确定该控制信道的搜索空间; 用户设备也可以根据该时频资源信 息、 该时频资源信息与搜索空间资源的第一映射关系以及该配置信息, 确 定与该配置信息相应的该搜索空间。下面将结合图 4A和 4B分别进行描述。
应理解, 搜索空间资源可以是用户设备最终获得的控制信道的搜索空 间, 也可以是控制信道的至少两个候选搜索空间。 在搜索空间资源为控制 信道的候选搜索空间时, 用户设备还需要在搜索空间资源包括的至少两个 候选搜索空间中, 最终获取控制信道的搜索空间。
如图 4A所示, 根据本发明实施例的确定控制信道的搜索空间的方法
200可以包括:
S210, 用户设备根据该时频资源信息, 以及该时频资源信息与搜索空 间资源的第一映射关系, 确定搜索空间资源;
S220, 用户设备根据该位置信息, 在该搜索空间资源中确定控制信道 的搜索空间。
在 S210中, 用户设备可以根据时频资源信息, 确定配置给该用户设备 的时频资源, 用户设备还可以进一步根据该时频资源信息与搜索空间资源 的第一映射关系, 确定被配置的时频资源上控制信道搜索空间资源的映射 规则, 从而可以确定搜索空间资源。
具体而言,假设该时频资源是一组 RB对, 其中包含 N个 RB对, 该 N 个 RB对的编号例如为 0, 1 , …, N-1 , 当然, 这 N个 RB对可以连续或非 连续地映射到物理资源上。 例如, 一种搜索空间资源的映射方法是, 该 UE 的控制信道搜索空间从第 0个 RB对开始顺序映射,比如以一个 RB的聚合 水平为例, 该 UE的控制信道搜索空间中的候选 E-PDCCH资源分别为 RB 对 0中的第一个 RB, RB对 0中的第二个 RB, RB对 1中的第一个 RB, RB对 1中的第二个 RB, 等。 例如, 另一种搜索空间资源的映射方法 是, 该 UE的控制信道搜索空间可以采用离散的映射方式, 如图 5所示, 其 中以一个 RB的聚合水平为例,该控制信道搜索空间中的候选 E-PDCCH资 源分别为所配置的时频资源中的前 3个 RB对 0, 1 , 2,和后 3个 RB对 N-3, N-2, N-l。 聚合水平为一个 RB 的其他映射关系不作限定, 且其他聚合水 平的映射关系亦不作限定。
在 S220中, 用户设备确定了搜索空间资源后, 用户设备可以根据第一 信息包括的位置信息, 在该搜索空间资源中确定控制信道的搜索空间。
具体地,以图 5所示的聚合水平为 1个 RB的 E-PDCCH为例进行描述。 例如, UE可以根据 RRC信令获取 E-PDCCH的时频资源信息, 以及包括该 搜索空间的位置信息的第一信息。 于是, UE可以根据该时频资源信息、 该 时频资源信息与搜索空间资源的第一映射关系、 以及承载在第一信令中的 位置信息确定该控制信道的搜索空间。 应理解, 时频资源信息与搜索空间资源的第一映射关系是指在该时频 资源上的搜索空间资源的映射方式, 即控制信道的搜索空间资源中的候选
E-PDCCH在该时频资源上的映射方式。 下面以一个候选 E-PDCCH为例进 行说明。如果候选控制信道 A的一部分资源 A1占用 RB对 0的第一时隙的 RB的一部分, 那么该候选控制信道 A的另一部分资源 A2占用 RB对 N-3 的第二时隙的 RB的一部分, 那么 RB对 0的第一时隙的 RB和 RB对 N-3 的第二时隙的 RB可以看作是搜索空间资源。 其他映射关系不作限定。 UE 可以再通过第一信令中的搜索空间的位置信息获取控制信道在该搜索空间 资源中的具体位置信息。 例如, UE获取上述候选控制信道的部分资源 A1 和 A2分别占用了一个 RB的哪一部分, 例如, A1占用了 RB的上半部分, A2占用了 RB的下半部分。
应理解, 包括上述位置信息的第一信令可以属于上述 RRC信令, 也可 以是其他 RRC信令或物理层信令。 并且, RB的其他划分方式不作限定, 其他聚合水平的控制信道也不作限定。
再例如, 还是以一个候选 E-PDCCH A为例进行说明。 用户设备根据时 频资源信 , ¾以及时频资源信息与搜索空间资源的第一映射关系得到的该 E-PDCCH A的搜索空间资源包括: a ) A1 占用 RB对 0的第一时隙的 RB 或第一时隙的 RB的一部分, A2占用 RB对 N-3的第二时隙的 RB或第二 时隙的 RB的一部分, 和 b ) A1占用 RB对 0的第二时隙的 RB或第二时隙 的 RB的一部分, A2占用 RB对 N-3的第一时隙的 RB或第一时隙的 RB 的一部分。 用户设备可以再根据该位置信息, 在该搜索空间资源中确定最 终的搜索空间为上述情况 a )或 b )。 其他映射方式不作限定。
如图 4B 所示, 根据本发明实施例的确定控制信道的搜索空间的方法 200也可以包括:
S210, 用户设备根据该时频资源信息, 以及该时频资源信息与搜索空 间资源的第一映射关系, 确定搜索空间资源;
S230, 用户设备根据该配置信息与该搜索空间的第二映射关系, 和 /或 该配置信息, 在该搜索空间资源中确定与该配置信息相应的该搜索空间。
在 S230中, UE确定了搜索空间资源后,UE可以根据 UERS配置信息, 和 /或 UERS配置信息与 E-PDCCH搜索空间的第二映射关系, 在该搜索空 间资源中确定与该 UE的 UERS配置信息对应的控制信道搜索空间。 应理解, 上述 UERS配置信息与搜索空间的第二映射关系可以解释为, UERS的配置信息与其对应的搜索空间的映射关系, 且这个映射关系是 UE 特定的映射关系, 比如 UE1的天线端口 7的 UERS对应的搜索空间为搜索 空间 A, 和 /或, UE1的天线端口 8的 UERS对应的搜索空间为搜索空间 B; UE2的天线端口 7的 UERS对应的搜索空间为搜索空间 B, 和 /或, UE2的 天线端口 8的 UERS对应的搜索空间为搜索空间 A这样, UE1和 UE2可以 通过空间划分的方式占用相同的时频资源的搜索空间, 从而能够提高资源 的利用效率。
UE可以根据该 UE的 UERS配置信息和 /或上述第二映射关系,确定该 UE 的控制信道搜索空间。 具体而言, 如果第一映射关系中包括了所有的 UERS配置信息和搜索空间的对应关系,此时不需要第二映射关系, 只需要 根据 UERS配置信息, 就可以从搜索空间资源中确定最终的搜索空间; 如 果第一映射关系中仅包括搜索空间资源, 则此时需要知道 UERS 的配置信 息, 以及该配置信息与搜索空间的第二映射关系, 才能从搜索空间资源中 确定最终的搜索空间。
例如, UE被配置的 UERS的天线端口为 7, 则该 UE可以根据时频资 源信息以及该时频资源信息与搜索空间资源的第一映射关系, 确定包括搜 索空间 A和搜索空间 B的搜索空间资源, UE再根据该配置信息, 和 /或该 配置信息与搜索空间的第二映射关系,确定该 UE的控制信道搜索空间为该 搜索空间资源中的搜索空间 A。
应理解, 上述提到的搜索空间与 UERS配置信息的对应关系或映射关 系是指,如果 UE在上述搜索空间中是基于该 UE的 UERS配置信息来接收 E-PDCCH时, 则可以理解为该搜索空间为与该 UE的该 UERS配置信息对 应的搜索空间。
具体地,以图 5所示的聚合水平为 1个 RB的 E-PDCCH为例进行描述。 例如, UE可以根据 RRC信令获取 E-PDCCH的时频资源信息, 以及包括该 UERS的配置信息的第一信息。 于是, UE可以根据该时频资源信息、 该时 频资源信息与搜索空间资源的第一映射关系, 以及承载在第一信令中的配 置信息确定控制信道的搜索空间。
UE可以再通过该 UERS的配置信息来确定具体的搜索空间。例如, UE 获取上述候选控制信道的两部分资源 A1和 A2分别占用了一个 RB的哪一 部分, 例如, 如果该 UERS的配置信息为单天线端口 7 iU尤码 0, 则 A1占 用了 RB对 0的第一时隙的 RB的上半部分, A2占用了 RB对 N-3的第二 时隙的 RB的下半部分;如果该 UERS的配置信息为单天线端口 8且扰码 0, 则 A1占用了 RB对 0的第一时隙的 RB的下半部分, A2占用了 RB对 N-3 的第二时隙的 RB的上半部分。
应理解, 包括该配置信息的第一信令可以属于上述 RRC信令, 也可以 是其他 RRC信令或物理层信令。 并且, RB的其他划分方式不作限定, 其 他聚合水平的控制信道不作限定, 其他 UERS配置信息也不作限定。
上述方法还可以具体理解为, 用户设备可以根据时频资源信息, 该时 频资源信息与搜索空间资源的第一映射关系确定搜索空间资源。 以一个候 选 E-PDCCH为例进行说明。上述的候选控制信道 A的一部分资源 A1占用 RB对 0的第一时隙的 RB的一部分, 该候选控制信道 A的另一部分资源 A2占用 RB对 N-3的第二时隙的 RB的一部分, 这里所描述的 RB对 0的 第一时隙的 RB和 RB对 N-3的第二时隙的 RB可以看作是该候选 E-PDCCH 的搜索空间资源。 用户设备可以再根据该 UERS配置信息, 和 /或该 UERS 配置信息与搜索空间的第二映射关系, 在该搜索空间资源中确定控制信道 的搜索空间, 即上述候选控制信道 A的两部分 A1和 A2分别占用了一个 RB对的哪一部分, 例如, 如果该 UERS的配置信息为单天线端口 7且扰码 0, 则 A1占用了 RB对 0的第一时隙的 RB的上半部分, A2占用了 RB对 N-3的第二时隙的 RB的下半部分;如果该 UERS的配置信息为单天线端口 8且扰码 0, 则 A1占用了 RB对 0的第一时隙的 RB的下半部分, A2占用 了 RB对 N-3的第二时隙的 RB的上半部分。 由此可知, UERS配置信息与 搜索空间具有对应关系, 即确定的搜索空间是 UERS配置信息所对应的搜 索空间。
再例如, 还是以一个候选 E-PDCCH A为例进行说明。 用户设备根据时 频资源, 时频资源与搜索空间资源的第一映射关系, 得到的该 E-PDCCH A 的搜索空间资源包括: a ) A1占用 RB对 0的第一时隙的 RB或第一时隙的 RB的一部分, A2占用 RB对 N-3的第二时隙的 RB或第二时隙的 RB的一 部分,和 b )A1占用 RB对 0的第二时隙的 RB或第二时隙的 RB的一部分, A2占用 RB对 N-3的第一时隙的 RB或第一时隙的 RB的一部分。 用户设 备可以再根据 UERS配置信息, 和 /或 UERS配置信息和搜索空间的第二映 射关系, 在该搜索空间资源中确定搜索空间为上述情况 a )或 b )。 例如, 如果 UERS配置信息为单天线端口 7且扰码 0,则控制信道的搜索空间为情 况 a ); 如果 UERS配置信息为单天线端口 8且扰码 0, 则该搜索空间为情 况 b )。 由此可知, UERS配置信息与搜索空间具有对应关系, 即确定的搜 索空间是 UERS配置信息所对应的搜索空间。其他映射方式, UERS配置信 息等信息都不作限定。
应理解, 在本发明的各种实施例中, 上述各过程的序号的大小并不意 味着执行顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而 不应对本发明实施例的实施过程构成任何限定。
因此, 本发明实施例的接收控制信道的方法, 通过根据控制信道的时 频资源信息以及第一信息, 能够确定控制信道的搜索空间, 因而能够实现 对该控制信道进行接收和发送, 并能够扩大控制信道的容量, 提高系统调 度效率和灵活性, 以及能够进一步提高用户体验。
在本发明实施例中, 用户设备可以通过接收该基站发送的第二信令和 / 或根据预定规则, 获取该第一映射关系和该第二映射关系, 其中该第二信 令包括该第一映射关系和 /或该第二映射关系。
可选地, 该第二信令可以是诸如 RRC信令或 MAC信令的高层信令, 也可以是诸如 PDCCH信令的物理层信令。 UE可以通过该第二信令获取 该第一映射关系和 /或该第二映射关系, UE也可以通过隐式规则来获取该第 一映射关系和 /或该第二映射关系。 例如, 如图 5所示, 天线端口 7对应的 搜索空间占用了 RB对 0、 1、 2、 N-3、 N-2、 N-l的一部分时频资源, 而天 线端口 8对应的搜索空间占用了上述 RB对的另一部分时频资源, 又例如, 如图 6所示, 天线端口 7对应的搜索空间占用了 RB对 0、 1、 2的第一时隙 时频资源, 而天线端口 8对应的搜索空间占用了 RB对 0、 1、 2的第二时隙 时频资源, 此时如果 UE的 UERS配置为天线端口 7, 则该 UE就可以根据 上述隐式规则获取到天线端口 7对应的搜索空间。
在本发明实施例中, 用户设备也可以根据时频资源信息、 第一信息与 搜索空间之间的第三映射关系, 以及该时频资源信息和该第一信息, 确定 该控制信道的搜索空间。
在本发明实施例中, 可选地, 该时频资源信息与搜索空间的第一映射 关系、 该配置信息与搜索空间的第二映射关系或该时频资源信息、 该配置 信息与搜索空间之间的第三映射关系为用户设备特定的映射关系。 即对于 不同的用户设备而言, 第一映射关系或第二映射关系不同。
在本发明实施例中, 用户设备确定的控制信道的搜索空间可以通过时 间资源、 频率资源或空间资源中的至少一种进行区分。
具体以聚合水平为 2个 RB为例,如图 6所示,天线端口 7和 8对应的 搜索空间是时频资源区分的,即天线端口 7对应的搜索空间占用了 RB对 0、 1、 2中的前半个 RB, 以及 RB对 N-3、 N-2、 N-l的后半个 RB; 而天线端 口 8对应的搜索空间占用了 RB对 0、 1、 2中的后半个 RB,以及 RB对 N-3、 N-2、 N-l的前半个 RB。
特别地, 再以聚合水平为 1个 RB为例, 如图 5所示, 即天线端口 7 对应的搜索空间占用了 RB对 0、 1、 2、 N-3、 N-2、 N-l的一部分时频资源, 而天线端口 8对应的搜索空间占用了上述 RB对的另一部分时频资源。从本 例中可以看出,每个聚合等级为一个 RB的候选 E-PDCCH资源都占用了两 个部分 RB, 其中每个部分 RB是一个 RB频分的一部分, 而 UE被配置的 E-PDCCH时频资源的信令通知的最小单位是一个 RB或一个 RB对, 因此 UE需要根据上述 UERS配置信息与 E-PDCCH搜索空间的对应关系来确定 最终的搜索空间。
此外, 上述一个 RB划分为 RB的多个部分的方法并不作限定。 其他大 于一个 RB的聚合水平的候选 E-PDCCH资源也可以采用这种 RB划分为多 个部分的映射方法。 多个搜索空间的其他区分方式也不作限定, 例如搜索 空间 A和 B可以占用相同的时频资源, 但通过不同的 UERS的天线端口等 空间信息来区分。
在本发明实施例中, 可选地, 用户设备根据时频资源信息和第一信息, 确定控制信道的搜索空间, 该搜索空间中的至少一个控制信道占用至少两 个资源块 RB中的每个 RB的部分资源。 由此能够增加控制信道, 特别是聚 合水平比较小时, 能够增加控制信道的频率分集增益。
例如,如图 5所示,控制信道 B占用 RB对 1中的第一个 RB的一部分 资源, 该部分资源可以是该第一个 RB的上半部分资源, 如上半个 RB; 或 者也可以是该第一个 RB的下半部分资源, 如下半个 RB; 该控制信道 B还 占用 RB对 N-2中的第二个 RB的一部分资源,该部分资源可以是该第二个 RB的上半部分资源, 如上半个 RB; 或者也可以是该第二个 RB的下半部 分资源, 如下半个 RB。 如图 6所示, 控制信道 C占用 RB对 2中的前半部 分资源, 该控制信道 C还占用 RB对 N-1中的后半部分资源。
在本发明实施例中, 可选地, 用户设备根据时频资源信息和第一信息, 确定控制信道的搜索空间, 该搜索空间中的至少一个控制信道占用至少两 个 RB的部分或全部资源,该至少两个 RB占用一个子帧的第一时隙和第二 时隙。 由此可以平衡控制信道的资源开销, 并且可以获得时隙间的分集增 益。
可选地, 如果控制信道的聚合水平为 1 时, 该控制信道占用至少两个 RB中的部分资源, 其中 RB资源以频分的方式分割, 并且该至少两个 RB 中的部分资源是时分的, 例如分别占用两个时隙。 可选地, 该至少两个 RB 中的部分资源之间的 RB间隔相等。
在本发明实施例中, 可选地, 用户设备根据时频资源信息和第一信息, 确定控制信道的搜索空间, 该搜索空间中的第一控制信道的第一部分资源 占用的 RB或 RB对的序号为 i时, 该第一控制信道的第二部分资源占用的 RB或 RB对的序号为 N + i _ N^ / M , 其中 M为自然数, Ncan为该控制信 道搜索空间包括的与聚合水平相应的控制信道的数量, N 为与该时频资源 信息相应的 RB或 RB对的数量, 或 N等于该 Ncan。
以图 6为例, 假设聚合水平为 2个 RB的候选控制信道的数量为 6, 即 Ncan=6, M取 2, 则当其中一个候选控制信道的第一部分资源占用的 RB 对的序号为 1 时, 该候选控制信道的第二部分资源占用的 RB对的序号为 N-2。
因此, 本发明实施例的接收控制信道的方法, 通过根据控制信道的时 频资源信息以及第一信息, 能够确定控制信道的搜索空间, 因而能够实现 对该控制信道进行接收和发送, 并能够扩大控制信道的容量, 提高系统调 度效率和灵活性, 以及能够进一步提高用户体验。
在本发明实施例中, 可选地, 用户设备 (User Equipment, UE)根据时频 资源信息和第一信息, 确定控制信道的搜索空间, 该搜索空间还包括: 该控制信道的搜索空间所占的第一资源单元中包含的该当前用户设备 的候选控制信道的数量小于等于该第一资源单元中能够包含的候选控制信 道的总数, 该候选控制信道是一种聚合等级的候选控制信道和 /或所述候选 控制信道是至少一种 UERS的配置信息的候选控制信道。 还进一步包括:
该控制信道的搜索空间所占的第一资源单元中包含该用户设备的一个 候选控制信道的全部或部分, 该候选控制信道是一种聚合等级的候选控制 信道和 /或所述候选控制信道是一种 UERS的配置信息的候选控制信道。
该第一资源单元可以为一个 B、 一个 RB对, 一个 RB组或一个 RB 对组。该 RB组或 RB对组可以是基站通知给用户设备用来做联合信道估计 的一组 RB或 RB对, 即基站在该 RB组或 RB对组中向该用户设备发送 E-PDCCH时所采用的预编码矩阵相同。
该聚合等级可以包括 1、 2、 4或其他数量个第一控制信道单元等, 即 一个候选控制信道可以由 1、 2或 4或其他数量的第一控制信道单元组成。 该第一控制信道单元可以是现有 LTE 系统中的 PDCCH 的控制信道单元 (Control Channel Element, CCE),也可以用其他单位来衡量该第一控制信道 单元, 比如一个 RB, 半个 RB, 或其他大小的控制信道单元等, 在此不做 限定。 下面以聚合等级为 1和 2, 第一控制信道单元为 CCE, 且第一资源 单元为一个 RB对为例进行举例说明, 其他情况类似, 在此不作限定。
举例说明如下:
假设配置给 UE的 E-PDCCH的时频资源为 4个 RB对,具体表示为 RB 对 0,1,2,3。且假设一个 RB对中包含 E-PDCCH的 CCE的个数为 4, 则可以 依次把该 4个 RB对上的 CCE标号假设为 0,1 , 15共 16个 CCE; 且假 设 UE的 UERS配置为天线端口 7且扰码标识 0; 还假设该 UE的聚合等级 为 1个、 2个和 4个 CCE的搜索空间中的候选 E-PDCCH的个数都为 4, 其 他聚合等级、 UERS配置信息和候选 E-PDCCH个数不作限定。
假设搜索空间的起始点从 RB 0的 CCE 0开始,如果该 UE的 1个 CCE 聚合等级的 4个候选 E-PDCCH分别为 CCE 0,1,2,3, 那么会增加 E-PDCCH 阻塞概率。 具体地, 如果与该 UE具有相同的 UERS配置的另一个 UE占用 了 CCE 0,1,2,3中的任何一个, 则这 4个 CCE对于该 UE来说都不可用, 因 为会有 UERS沖突, 这里假设 UE的 UERS是占用整个该 RB对的; 反之, 如果与该 UE具有不同的 UERS配置的另一个 UE占用了 CCE 0,1,2,3中的 任何一个,则这 4个 CCE中的其他 3个未被占用的 CCE对于该 UE来说都 是可以用的, 因此为 UE间通过不同的 UERS配置区分开了。 因此, 没有必 要使得 UE的候选 E-PDCCH占满整个 RB对。 一个解决方案是, 一个 RB 对上的该 UE的候选 E-PDCCH的个数小于该 RB对上能够承载的相同聚合 等级的候选 E-PDCCH的总数。具体例如,上述该 UE的 4个候选 E-PDCCH 可以分别占用 CCE 0,1和 CCE 4,5, 这样緩解了上述 E-PDCCH的沖突。 更 优选地, 上述该 UE的 4个候选 E-PDCCH可以分别占用 CCE 0,4,8,12, 即 对于特定聚合等级和特定 UERS配置,每个 RB对中只包含该 UE的一个候 选 E-PDCCH。
特别地, 对于分布式 E-PDCCH映射方式, 即一个候选 E-PDCCH可以 映射到多个 RB或 RB对上来获得频率分集增益。 在这种情况下, 类似地, 上述方案可以为,对于特定聚合等级和特定 UERS配置,一个 RB对中只包 含该 UE的一个候选 E-PDCCH的一部分。 或者, 一个 RB对中包含该 UE 的 N个候选 E-PDCCH的各一部分, 其中 N小于该 RB对上能够承载的相 同聚合等级的候选 E-PDCCH的总数。 具体地, 以 N为 2为例, 则一个 RB 对中包含该 UE的聚合等级为一个 CCE的第一候选 E-PDCCH的一部分和 第二候选 E-PDCCH的一部分, 该 RB对上能够承载的该聚合等级的候选 E-PDCCH的数量为 4。
再以上述假设条件, 考虑聚合等级为 个 CCE的 E-PDCCH的搜索空 间。具体地,对于聚合等级为 2个 CCE的 E-PDCCH,上述该 UE的 4个候 选 E-PDCCH可以分别占用 CCE {0,1 } , {4,5 } , {8,9}和 { 12,13} , 即还是一 个 RB 对中包含的候选 E-PDCCH 的个数小于该 RB 对能够承载的候选 E-PDCCH的总数,或进一步地,一个 RB对中至多包含一个候选 E-PDCCH 的全部或部分。
再以上述假设条件, 考虑聚合等级为 4个 CCE的 E-PDCCH的搜索空 间。 具体地, 对于聚合等级为 4个 CCE的 E-PDCCH, 上述该 UE的 4个候 选 E-PDCCH可以分别占用 RB对 0,1,2和 3, 即一个 RB对中包含的候选 E-PDCCH的个数等于该 RB对中能够承载的该聚合等级的候选 E-PDCCH 的个数。
上述该 UE在一个 RB对上具体占用哪个控制信道单元来搜索该 UE的 候选 E-PDCCH, 可以通过上述实施例中的第一信息确定。 具体以第一信息 为 UERS配置信息为例说明,该 UE在一个 RB对上占用的控制信道单元与 该 UE的 UERS配置信息有对应关系,通过该对应关系和该 UE的 UERS配 置信息就可以确定该 UE在一个 RB对上具体占用的控制信道单元来搜索该 UE的候选 E-PDCCH 上述实施例可以扩展到基站侧:
一种发送控制信道的方法, 包括:
获取控制信道的时频资源信息以及第一信息;
根据所述时频资源信息和所述第一信息, 确定所述控制信道的搜索空 间;
在所述搜索空间中向用户设备发送所述控制信道。
该控制信道的搜索空间所占的第一资源单元中包含的当前用户设备的 候选控制信道的数量小于等于该第一资源单元中能够包含的候选控制信道 的总数, 该候选控制信道是一种聚合等级的候选控制信道和 /或所述候选控 制信道是一种 UERS的配置信息的候选控制信道。
还进一步包括:
该控制信道的搜索空间所占的第一资源单元中包含当前用户设备的至 多一个候选控制信道的全部或部分该候选控制信道是一种聚合等级的候选 控制信道和 /或所述候选控制信道是一种 UERS 的配置信息的候选控制信 道。 一种用户设备, 包括:
获取模块, 用于获取控制信道的时频资源信息以及第一信息; 确定模块, 用于根据所述获取模块获取的所述时频资源信息和所述第 一信息, 确定所述控制信道的搜索空间;
第一接收模块, 用于在所述确定模块确定的所述搜索空间中接收所述 控制信道。
该确定模块包括:
该控制信道的搜索空间所占的第一资源单元中包含的当前用户设备的 候选控制信道的数量小于等于该第一资源单元中能够包含的候选控制信道 的总数, 该候选控制信道是一种聚合等级的候选控制信道和 /或所述候选控 制信道是一种 UERS的配置信息的候选控制信道。
还进一步包括:
该控制信道的搜索空间所占的第一资源单元中包含该用户设备的一个 候选控制信道的全部或部分, 该候选控制信道是一种聚合等级的候选控制 信道和 /或所述候选控制信道是一种 UERS的配置信息的候选控制信道。 一种基站, 包括:
获取模块, 用于获取控制信道的时频资源信息以及第一信息; 确定模块, 用于根据所述获取模块获取的所述时频资源信息和所述第 一信息, 确定所述控制信道的搜索空间;
第一发送模块, 用于在所述确定模块确定的所述搜索空间中, 向用户 设备发送所述控制信道。
该确定模块包括:
该控制信道的搜索空间所占的第一资源单元中包含的该用户设备的候 选控制信道的数量小于等于该第一资源单元中能够包含的候选控制信道的 总数, 该候选控制信道是一种聚合等级的候选控制信道和 /或所述候选控制 信道是一种 UERS的配置信息的候选控制信道。
还进一步包括:
该控制信道的搜索空间所占的第一资源单元中包含该用户设备的一个 候选控制信道的全部或部分, 该候选控制信道是一种聚合等级的候选控制 信道和 /或所述候选控制信道是一种 UERS的配置信息的候选控制信道。 上文中结合图 2至图 6,从用户设备的角度详细描述了根据本发明实施 例的接收控制信道的方法, 下面将结合图 7、 图 8A和图 8B, 从基站的角度 描述根据本发明实施例的发送控制信息的方法。
图 7示出了根据本发明实施例的发送控制信道的方法 300的示意性流 程图。 如图 7所示, 该方法 300包括:
S310, 获取控制信道的时频资源信息以及第一信息;
S320, 根据该时频资源信息和该第一信息, 确定该控制信道的搜索空 间;
S330, 在该搜索空间中向用户设备发送该控制信道。
因此, 本发明实施例的发送控制信道的方法, 通过根据控制信道的时 频资源信息以及第一信息, 能够确定控制信道的搜索空间, 因而能够实现 对该控制信道进行接收和发送, 并能够扩大控制信道的容量, 提高系统调 度效率和灵活性, 以及能够进一步提高用户体验。
在本发明实施例中,基站在为 UE配置该控制信道的时频资源和第一信 息之前, 需要获取该时频资源和该第一信息包括的 UERS配置信息和 /或搜 索空间的位置信息。对于 UE的控制信道时频资源的配置,基站可以根据该 UE的信道状态, 将该 UE的控制信道配置到信道状态较好的时频资源上, 或者基站还可以根据邻小区的干扰情况来配置该时频资源。 对于 UE 的 UERS配置信息的配置, 基站可以根据该 UE的信道状态, 选择该 UE的天 线端口数, 并根据该小区多个 UE 的情况协调相应的天线端口号和扰码信 息。 对于 UE的搜索空间的位置信息的配置, 基站可以根据该 UE的控制信 道的时频资源、 UERS配置信息和 /或时频资源上的负载情况来配置。
在本发明实施例中, 基站可以向用户设备发送第一信令, 该第一信令 包括该时频资源信息和该第一信息, 以便于该用户设备根据该时频资源信 息和该第一信息, 确定该控制信道搜索空间。 可选地, 该时频资源信息和 该第一信息也可以静态配置给用户设备。
在本发明实施例中, 可选地, 该第一信息包括用于发送该控制信道的 用户设备特定参考信号 UERS的配置信息, 和 /或该搜索空间的位置信息。
在本发明实施例中, 基站可以根据该时频资源信息和该第一信息, 确 定该控制信道的搜索空间。 可选地, 在本发明实施例中, 基站可以根据该 时频资源信息、 该时频资源信息与搜索空间资源的第一映射关系以及该位 置信息, 确定该控制信道的搜索空间; 基站也可以根据该时频资源信息、 该时频资源信息与搜索空间资源的第一映射关系以及该配置信息, 确定与 该配置信息相应的该搜索空间。 下面将结合图 8A和 8B分别进行描述。
在本发明实施例中, 如图 8A所示, 可选地, 基站确定控制信道的搜索 空间的方法 400, 包括:
S410, 基站根据该时频资源信息, 以及该时频资源信息与搜索空间资 源的第一映射关系, 确定搜索空间资源;
S420, 基站根据该位置信息, 在该搜索空间资源中确定控制信道的搜 索空间。
如图 8B 所示, 根据本发明实施例的确定控制信道的搜索空间的方法 400也可以包括:
S410, 基站根据该时频资源信息, 以及该时频资源信息与搜索空间资 源的第一映射关系, 确定搜索空间资源;
S430, 基站根据该配置信息与该搜索空间的第二映射关系, 和 /或该配 置信息, 在该搜索空间资源中确定与该配置信息相应的该搜索空间。
在本发明实施例中, 可选地, 基站向用户设备发送第二信令, 该第二 信令包括该第一映射关系和 /或该第二映射关系, 以便于该用户设备确定该 控制信道搜索空间。
在本发明实施例中, 可选地, 基站也可以根据该时频资源信息、 该第 一信息与搜索空间之间的第三映射关系, 以及该时频资源信息和该第一信 息, 确定该控制信道搜索空间。
在本发明实施例中, 可选地, 该时频资源信息与搜索空间的第一映射 关系、 该配置信息与搜索空间的第二映射关系或该时频资源信息、 该配置 信息与搜索空间之间的第三映射关系为用户设备特定的映射关系。 即对于 不同的用户设备而言, 第一映射关系或第二映射关系不同。
在本发明实施例中, 可选地, 基站确定的控制信道的搜索空间可以通 过时间资源、 频率资源或空间资源中的至少一种进行区分。 由于搜索空间 通过空间划分的方式占用相同的时频资源, 由此能够提高资源的利用效率。
在本发明实施例中, 可选地, 基站根据时频资源信息和第一信息, 确 定控制信道的搜索空间, 该搜索空间中的至少一个控制信道占用至少两个 资源块 RB中的每个 RB的部分资源。
在本发明实施例中, 可选地, 基站根据时频资源信息和第一信息, 确 定控制信道的搜索空间, 该搜索空间中的至少一个控制信道占用至少两个 RB的部分或全部资源, 该至少两个 RB占用一个子帧的第一时隙和第二时 隙。 由此可以平衡控制信道的资源开销, 并且可以获得时隙间的分集增益。
可选地, 如果控制信道的聚合水平为 1 时, 该控制信道占用至少两个 RB中的部分资源, 其中 RB资源以频分的方式分割, 并且该至少两个 RB 中的部分资源是时分的, 例如分别占用两个时隙。 可选地, 该至少两个 RB 中的部分资源之间的 RB间隔相等。
在本发明实施例中, 可选地, 基站根据时频资源信息和第一信息, 确 定控制信道的搜索空间, 该搜索空间中的第一控制信道的第一部分资源占 用的 RB的序号为 i时, 该第一控制信道的第二部分资源占用的 RB的序号 为 N + i _ ^an / M , 其中 M为自然数, Ncan为该控制信道搜索空间包括的与 聚合水平相应的控制信道的数量, N为与该时频资源信息相应的 RB或 RB 对的数量, 或 N等于该 Ncan。
因此, 本发明实施例的发送控制信道的方法, 通过根据控制信道的时 频资源信息以及第一信息, 能够确定控制信道的搜索空间, 因而能够实现 对该控制信道进行接收和发送, 并能够扩大控制信道的容量, 提高系统调 度效率和灵活性, 以及能够进一步提高用户体验。
上文中结合图 2至图 8B, 详细描述了根据本发明实施例的接收和发送 控制信道的方法, 下面将结合图 9至图 16B, 详细描述根据本发明实施例 的用户设备和基站。
图 9示出了根据本发明实施例的用户设备 600的示意性框图。 如图 9 所示, 该用户设备 600包括:
获取模块 610, 用于获取控制信道的时频资源信息以及第一信息; 确定模块 620,用于根据该获取模块 610获取的该时频资源信息和该第 一信息, 确定该控制信道的搜索空间;
第一接收模块 630,用于在该确定模块 620确定的该搜索空间中接收该 控制信道。
本发明实施例的用户设备, 通过根据控制信道的时频资源信息以及第 一信息, 能够确定控制信道的搜索空间, 因而能够实现对该控制信道进行 接收和发送, 并能够扩大控制信道的容量, 提高系统调度效率和灵活性, 以及能够进一步提高用户体验。
可选地, 如图 10所示, 该用户设备 600还包括:
第二接收模块 640, 用于接收基站发送的第一信令, 该第一信令包括该 时频资源信息和该第一信息;
该第一获取模块 610还用于根据该第二接收模块 640接收的该第一信 令, 获取该时频资源信息和该第一信息。
在本发明实施例中, 可选地, 该获取模块 610获取的该第一信息包括 用于接收该控制信道的用户设备特定参考信号 UERS的配置信息, 和 /或该 搜索空间的位置信息。
可选地, 如图 11所示, 该确定模块 620包括:
第一确定子模块 621 , 用于根据该时频资源信息、该时频资源信息与搜 索空间资源的第一映射关系以及该位置信息, 确定该搜索空间。 可选地, 如图 11所示, 该确定模块 620还包括:
第二确定子模块 622, 用于根据该时频资源信息、该时频资源信息与搜 索空间资源的第一映射关系以及该配置信息, 确定与该配置信息相应的该 搜索空间。
在本发明实施例中, 可选地, 如图 12A所示, 该第一确定子模块 621 包括:
第一确定单元 625, 用于根据该时频资源信息以及该第一映射关系, 确 定该搜索空间资源;
第二确定单元 626, 用于根据该位置信息, 在该第一确定单元 625确定 的该搜索空间资源中确定该搜索空间。
在本发明实施例中, 可选地, 如图 12B所示, 该第二确定子模块 622 包括:
第一确定单元 625, 用于根据该时频资源信息以及该第一映射关系, 确 定该搜索空间资源;
第三确定单元 627, 用于根据该配置信息与该搜索空间的第二映射关 系, 和 /或该配置信息, 在该第一确定单元 625确定的该搜索空间资源中确 定与该配置信息相应的该搜索空间。
在本发明实施例中, 可选地, 该确定模块 620根据的第一映射关系或 第二映射关系为用户设备特定的映射关系。
在本发明实施例中, 可选地, 该确定模块 620还用于: 根据该时频资 源信息和该第一信息, 确定该搜索空间, 该搜索空间中的至少一个控制信 道占用至少两个资源块 RB中的每个 RB的部分资源。
在本发明实施例中, 可选地, 该确定模块 620还用于: 根据该时频资 源信息和该第一信息, 确定该搜索空间, 该搜索空间中的至少一个控制信 道占用至少两个 RB的部分或全部资源,该至少两个 RB占用一个子帧的第 一时隙和第二时隙。
在本发明实施例中, 可选地, 该确定模块 620还用于: 根据该时频资 源信息和该第一信息, 确定该搜索空间, 该搜索空间中的第一控制信道的 第一部分资源占用的 RB的序号为 i时,该第一控制信道的第二部分资源占 用的 RB的序号为 N + i _ N^ / M , 其中 M为自然数, Ncan为该控制信道搜 索空间包括的与聚合水平相应的控制信道的数量, N 为与该时频资源信息 相应的 RB或 RB对的数量, 或 N等于该 Ncan。
可选地, 如果控制信道的聚合水平为 1 时, 该控制信道占用至少两个 RB中的部分资源, 其中 RB资源以频分的方式分割, 并且该至少两个 RB 中的部分资源是时分的, 例如分别占用两个时隙。 可选地, 该至少两个 RB 中的部分资源之间的 RB间隔相等。
应理解, 根据本发明实施例的用户设备 600可对应于根据本发明实施 例的接收和发送控制信道的方法中的用户设备 UE, 并且用户设备 600中的 各个模块的上述和其它操作和 /或功能分别为了实现图 2至图 6中的各个方 法的相应流程, 为了筒洁, 在此不再赘述。
因此, 本发明实施例的用户设备, 通过根据控制信道的时频资源信息 以及第一信息, 能够确定控制信道的搜索空间, 因而能够实现对该控制信 道进行接收和发送, 并能够扩大控制信道的容量, 提高系统调度效率和灵 活性, 以及能够进一步提高用户体验。
图 13示出了根据本发明实施例的基站 800的示意性框图。 如图 13所 示, 该基站 800包括:
获取模块 810, 用于获取控制信道的时频资源信息以及第一信息; 确定模块 820,用于根据该获取模块 810获取的该时频资源信息和该第 一信息, 确定该控制信道的搜索空间;
第一发送模块 830, 用于在该确定模块 820确定的该搜索空间中, 向用 户设备发送该控制信道。
本发明实施例的基站, 通过根据控制信道的时频资源信息以及第一信 息, 能够确定控制信道的搜索空间, 因而能够实现对该控制信道进行接收 和发送, 并能够扩大控制信道的容量, 提高系统调度效率和灵活性, 以及 能够进一步提高用户体验。
在本发明实施例中, 可选地, 如图 14所示, 该基站 800还包括: 第二发送模块 840, 用于向该用户设备发送第一信令, 该第一信令包括 该时频资源信息和该第一信息, 以便于该用户设备^ f艮据该时频资源信息和 该第一信息, 确定该控制信道的搜索空间。
在本发明实施例中, 可选地, 该获取模块 810获取的该第一信息包括 用于发送该控制信道的用户设备特定参考信号 UERS的配置信息, 和 /或该 搜索空间的位置信息。 在本发明实施例中, 可选地, 如图 15所示, 该确定模块 820包括: 第一确定子模块 821 , 用于根据该时频资源信息、该时频资源信息与搜 索空间资源的第一映射关系以及该位置信息, 确定该搜索空间。
可选地, 如图 15所示, 该确定模块 820还包括:
第二确定子模块 822, 用于根据该时频资源信息、该时频资源信息与搜 索空间资源的第一映射关系以及该配置信息, 确定与该配置信息相应的该 搜索空间。
在本发明实施例中, 可选地, 如图 16A所示, 该第一确定子模块 821 包括:
第一确定单元 825 , 用于根据该时频资源信息以及该第一映射关系, 确 定该搜索空间资源;
第二确定单元 826, 用于根据该位置信息, 在该第一确定单元 825确定 的该搜索空间资源中确定该搜索空间。
在本发明实施例中, 可选地, 如图 16A所示, 该第二确定子模块 822 包括:
第一确定单元 825 , 用于根据该时频资源信息以及该第一映射关系, 确 定该搜索空间资源;
第三确定单元 827 , 用于根据该配置信息与该搜索空间的第二映射关 系, 和 /或该配置信息, 在该第一确定单元 825确定的该搜索空间资源中确 定与该配置信息相应的该搜索空间。
可选地, 该基站 800还包括: 第三发送模块, 用于向用户设备发送第 二信令, 该第二信令包括该第一映射关系和 /或该第二映射关系, 以便于该 用户设备确定该控制信道搜索空间。
可选地, 该确定模块 820还用于根据该时频资源信息、 该第一信息与 搜索空间之间的第三映射关系, 以及该时频资源信息和该第一信息, 确定 该控制信道搜索空间。 在本发明实施例中, 可选地, 该确定模块 820根据 的第一映射关系、 第二映射关系或第三映射关系为用户设备特定的映射关 系。
在本发明实施例中, 可选地, 该确定模块 820还用于: 根据该时频资 源信息和该第一信息, 确定该搜索空间, 该搜索空间中的至少一个控制信 道占用至少两个资源块 RB中的每个 RB的部分资源。 在本发明实施例中, 可选地, 该确定模块 820还用于: 根据该时频资 源信息和该第一信息, 确定该搜索空间, 该搜索空间中的至少一个控制信 道占用至少两个 RB的部分或全部资源,该至少两个 RB占用一个子帧的第 一时隙和第二时隙。
在本发明实施例中, 可选地, 该确定模块 820还用于: 根据该时频资 源信息和该第一信息, 确定该搜索空间, 该搜索空间中的第一控制信道的 第一部分资源占用的 RB的序号为 i时,该第一控制信道的第二部分资源占 用的 RB的序号为 N +i_UM , 其中 M为自然数, Ncan为该控制信道搜 索空间包括的与聚合水平相应的控制信道的数量, N 为与该时频资源信息 相应的 RB或 RB对的数量, 或 N等于该 Ncan。
可选地, 如果控制信道的聚合水平为 1 时, 该控制信道占用至少两个 RB中的部分资源, 其中 RB资源以频分的方式分割, 并且该至少两个 RB 中的部分资源是时分的, 例如分别占用两个时隙。 可选地, 该至少两个 RB 中的部分资源之间的 RB间隔相等。
应理解, 根据本发明实施例的基站 800可对应于根据本发明实施例的 接收和发送控制信道的方法中的基站 eNB, 并且基站 800中的各个模块的 上述和其它操作和 /或功能分别为了实现图 7和图 8中的各个方法的相应流 程, 为了筒洁, 在此不再赘述。
因此, 本发明实施例的基站, 通过根据控制信道的时频资源信息以及 第一信息, 能够确定控制信道的搜索空间, 因而能够实现对该控制信道进 行接收和发送, 并能够扩大控制信道的容量, 提高系统调度效率和灵活性, 以及能够进一步提高用户体验。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的 各示例的单元及算法步骤, 能够以电子硬件、 计算机软件或者二者的结合 来实现, 为了清楚地说明硬件和软件的可互换性, 在上述说明中已经按照 功能一般性地描述了各示例的组成及步骤。 这些功能究竟以硬件还是软件 方式来执行, 取决于技术方案的特定应用和设计约束条件。 专业技术人员 可以对每个特定的应用来使用不同方法来实现所描述的功能, 但是这种实 现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到, 为了描述的方便和筒洁, 上 述描述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中 的对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置 和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅 是示意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实 现时可以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成 到另一个系统, 或一些特征可以忽略, 或不执行。 另外, 所显示或讨论的 相互之间的耦合或直接耦合或通信连接可以是通过一些接口、 装置或单元 的间接耦合或通信连接, 也可以是电的, 机械的或其它的形式连接。 作为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地 方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的 部分或者全部单元来实现本发明实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以是两个或两个以上单元集成 在一个单元中。 上述集成的单元既可以采用硬件的形式实现, 也可以采用 软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销 售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的技术方案本质上或者说对现有技术做出贡献的部分, 或者该技术 方案的全部或部分可以以软件产品的形式体现出来, 该计算机软件产品存 储在一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是个 人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的 全部或部分步骤。 而前述的存储介质包括: U盘、 移动硬盘、 只读存储器 ( ROM, Read-Only Memory ), 随机存取存储器(RAM, Random Access Memory )、 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局 限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可 轻易想到各种等效的修改或替换, 这些修改或替换都应涵盖在本发明的保 护范围之内。 因此, 本发明的保护范围应以权利要求的保护范围为准。

Claims

权利要求
1、 一种接收控制信道的方法, 其特征在于, 包括:
获取控制信道的时频资源信息以及第一信息;
根据所述时频资源信息和所述第一信息, 确定所述控制信道的搜索空 间;
在所述搜索空间中接收所述控制信道。
2、 根据权利要求 1所述的方法, 其特征在于, 所述方法还包括: 接收基站发送的第一信令, 所述第一信令包括所述时频资源信息和所 述第一信息;
所述获取控制信道的时频资源信息以及第一信息, 包括:
根据所述第一信令获取所述时频资源信息和所述第一信息。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述第一信息包括 用于接收所述控制信道的用户设备特定参考信号 UERS的配置信息, 和 /或 所述搜索空间的位置信息。
4、 根据权利要求 3所述的方法, 其特征在于, 所述确定所述控制信道 的搜索空间, 包括:
根据所述时频资源信息、 所述时频资源信息与搜索空间资源的第一映 射关系以及所述位置信息, 确定所述搜索空间。
5、根据权利要求 4所述的方法, 其特征在于, 所述确定所述搜索空间, 包括:
根据所述时频资源信息以及所述第一映射关系, 确定所述搜索空间资 源;
根据所述位置信息, 在所述搜索空间资源中确定所述搜索空间。
6、 根据权利要求 3所述的方法, 其特征在于, 所述确定所述控制信道 的搜索空间, 包括:
根据所述时频资源信息、 所述时频资源信息与搜索空间资源的第一映 射关系以及所述配置信息, 确定与所述配置信息相应的所述搜索空间。
7、 根据权利要求 6所述的方法, 其特征在于, 所述确定与所述配置信 息相应的所述搜索空间, 包括:
根据所述时频资源信息以及所述第一映射关系, 确定所述搜索空间资 根据所述配置信息与所述搜索空间的第二映射关系, 和 /或所述配置信 息, 在所述搜索空间资源中确定与所述配置信息相应的所述搜索空间。
8、 根据权利要求 1至 7中任一项所述的方法, 其特征在于, 所述确定 所述控制信道的搜索空间, 包括:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的至少一个控制信道占用至少两个资源块 RB中的每个 RB的部分 资源。
9、 根据权利要求 1至 8中任一项所述的方法, 其特征在于, 所述确定 所述控制信道的搜索空间, 包括:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的至少一个控制信道占用至少两个 RB的部分或全部资源,所述至 少两个 RB占用一个子帧的第一时隙和第二时隙。
10、 根据权利要求 1至 9中任一项所述的方法, 其特征在于, 所述确 定所述控制信道的搜索空间, 包括:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的第一控制信道的第一部分资源占用的 RB或 RB对的序号为 i时, 所述第一控制信道的第二部分资源占用的 RB 或 RB 对的序号为 N +i - Ncan / M , 其中 M为自然数, Ncan为所述控制信道搜索空间包括的与 聚合水平相应的控制信道的数量, N为与所述时频资源信息相应的 RB或 RB对的数量, 或 N等于所述 Ncan。
11、 根据权利要求 1至 10中任一项所述的方法, 其特征在于, 所述确 定所述控制信道的搜索空间, 包括:
所述控制信道的搜索空间所占的第一资源单元中包含的当前用户设备 的候选控制信道的数量小于等于所述第一资源单元中能够包含的候选控制 信道的总数, 所述候选控制信道是一种聚合等级的候选控制信道和 /或所述 候选控制信道是一种 UERS的配置信息的候选控制信道。
12、 根据权利要求 1至 11中任一项所述的方法, 其特征在于, 所述确 定所述控制信道的搜索空间, 包括:
所述控制信道的搜索空间所占的第一资源单元中包含当前用户设备的 一个候选控制信道的全部或部分, 所述候选控制信道是一种聚合等级的候 选控制信道和 /或所述候选控制信道是一种 UERS的配置信息的候选控制信 道。
13、 一种发送控制信道的方法, 其特征在于, 包括:
获取控制信道的时频资源信息以及第一信息;
根据所述时频资源信息和所述第一信息, 确定所述控制信道的搜索空 间;
在所述搜索空间中向用户设备发送所述控制信道。
14、 根据权利要求 13所述的方法, 其特征在于, 所述方法还包括: 向所述用户设备发送第一信令, 所述第一信令包括所述时频资源信息 和所述第一信息, 以便于所述用户设备根据所述时频资源信息和所述第一 信息, 确定所述控制信道的搜索空间。
15、 根据权利要求 13或 14所述的方法, 其特征在于, 所述第一信息 包括用于发送所述控制信道的用户设备特定参考信号 UERS 的配置信息, 和 /或所述搜索空间的位置信息。
16、 根据权利要求 15所述的方法, 其特征在于, 所述确定所述控制信 道的搜索空间, 包括:
根据所述时频资源信息、 所述时频资源信息与搜索空间资源的第一映 射关系以及所述位置信息, 确定所述搜索空间。
17、 根据权利要求 16所述的方法, 其特征在于, 所述确定所述搜索空 间, 包括:
根据所述时频资源信息以及所述第一映射关系, 确定所述搜索空间资 源;
根据所述位置信息, 在所述搜索空间资源中确定所述搜索空间。
18、 根据权利要求 15所述的方法, 其特征在于, 所述确定所述控制信 道的搜索空间, 包括:
根据所述时频资源信息、 所述时频资源信息与搜索空间资源的第一映 射关系以及所述配置信息, 确定与所述配置信息相应的所述搜索空间。
19、 根据权利要求 18所述的方法, 其特征在于, 所述确定与所述配置 信息相应的所述搜索空间, 包括:
根据所述时频资源信息以及所述第一映射关系, 确定所述搜索空间资 源;
根据所述配置信息与所述搜索空间的第二映射关系, 和 /或所述配置信 息, 在所述搜索空间资源中确定与所述配置信息相应的所述搜索空间。
20、 根据权利要求 13至 19中任一项所述的方法, 其特征在于, 所述 确定所述控制信道的搜索空间, 包括:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的至少一个控制信道占用至少两个资源块 RB中的每个 RB的部分 资源。
21、 根据权利要求 13至 20中任一项所述的方法, 其特征在于, 所述 确定所述控制信道的搜索空间, 包括:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的至少一个控制信道占用至少两个 RB的部分或全部资源,所述至 少两个 RB占用一个子帧的第一时隙和第二时隙。
22、 根据权利要求 13至 21 中任一项所述的方法, 其特征在于, 所述 确定所述控制信道的搜索空间, 包括:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的第一控制信道的第一部分资源占用的 RB或 RB对的序号为 i时, 所述第一控制信道的第二部分资源占用的 RB 或 RB 对的序号为 N +i - Ncan / M , 其中 M为自然数, Ncan为所述控制信道搜索空间包括的与 聚合水平相应的控制信道的数量, N为与所述时频资源信息相应的 RB或 RB对的数量, 或 N等于所述 Ncan。
23、 根据权利要求 13至 22中任一项所述的方法, 其特征在于, 所述 确定所述控制信道的搜索空间, 包括:
所述控制信道的搜索空间所占的第一资源单元中包含的当前用户设备 的候选控制信道的数量小于等于所述第一资源单元中能够包含的候选控制 信道的总数, 所述候选控制信道是一种聚合等级的候选控制信道和 /或所述 候选控制信道是一种 UERS的配置信息的候选控制信道。
24、 根据权利要求 13至 23中任一项所述的方法, 其特征在于, 所述 确定所述控制信道的搜索空间, 包括:
所述控制信道的搜索空间所占的第一资源单元中包含当前用户设备的 一个候选控制信道的全部或部分, 所述候选控制信道是一种聚合等级的候 选控制信道和 /或所述候选控制信道是一种 UERS的配置信息的候选控制信 道。
25、 一种用户设备, 其特征在于, 包括:
获取模块, 用于获取控制信道的时频资源信息以及第一信息; 确定模块, 用于根据所述获取模块获取的所述时频资源信息和所述第 一信息, 确定所述控制信道的搜索空间;
第一接收模块, 用于在所述确定模块确定的所述搜索空间中接收所述 控制信道。
26、 根据权利要求 25所述的用户设备, 其特征在于, 所述用户设备还 包括:
第二接收模块, 用于接收基站发送的第一信令, 所述第一信令包括所 述时频资源信息和所述第一信息;
所述获取模块还用于根据所述第二接收模块接收的所述第一信令, 获 取所述时频资源信息和所述第一信息。
27、 根据权利要求 25或 26所述的用户设备, 其特征在于, 所述获取 模块获取的所述第一信息包括用于接收所述控制信道的用户设备特定参考 信号 UERS的配置信息, 和 /或所述搜索空间的位置信息。
28、 根据权利要求 27所述的用户设备, 其特征在于, 所述确定模块包 括:
第一确定子模块, 用于根据所述时频资源信息、 所述时频资源信息与 搜索空间资源的第一映射关系以及所述位置信息, 确定所述搜索空间。
29、 根据权利要求 28所述的用户设备, 其特征在于, 所述第一确定子 模块包括:
第一确定单元, 用于根据所述时频资源信息以及所述第一映射关系, 确定所述搜索空间资源;
第二确定单元, 用于根据所述位置信息, 在所述第一确定单元确定的 所述搜索空间资源中确定所述搜索空间。
30、 根据权利要求 27所述的用户设备, 其特征在于, 所述确定模块还 包括:
第二确定子模块, 用于根据所述时频资源信息、 所述时频资源信息与 搜索空间资源的第一映射关系以及所述配置信息, 确定与所述配置信息相 应的所述搜索空间。
31、 根据权利要求 30所述的用户设备, 其特征在于, 所述第二确定子 模块包括:
第一确定单元, 用于根据所述时频资源信息以及所述第一映射关系, 确定所述搜索空间资源;
第三确定单元, 用于根据所述配置信息与所述搜索空间的第二映射关 系, 和 /或所述配置信息, 在所述第一确定单元确定的所述搜索空间资源中 确定与所述配置信息相应的所述搜索空间。
32、 根据权利要求 25至 31 中任一项所述的用户设备, 其特征在于, 所述确定模块还用于:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的至少一个控制信道占用至少两个资源块 RB中的每个 RB的部分 资源。
33、 根据权利要求 25至 32中任一项所述的用户设备, 其特征在于, 所述确定模块还用于:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的至少一个控制信道占用至少两个 RB的部分或全部资源,所述至 少两个 RB占用一个子帧的第一时隙和第二时隙。
34、 根据权利要求 25至 33中任一项所述的用户设备, 其特征在于, 所述确定模块还用于:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的第一控制信道的第一部分资源占用的 RB或 RB对的序号为 i时, 所述第一控制信道的第二部分资源占用的 RB 或 RB 对的序号为 N +i - Ncan / M , 其中 M为自然数, Ncan为所述控制信道搜索空间包括的与 聚合水平相应的控制信道的数量, N为与所述时频资源信息相应的 RB或 RB对的数量, 或 N等于所述 Ncan。
35、 根据权利要求 25至 34中任一项所述的用户设备, 其特征在于, 所述确定模块, 包括:
所述控制信道的搜索空间所占的第一资源单元中包含的当前用户设备 的候选控制信道的数量小于等于所述第一资源单元中能够包含的候选控制 信道的总数, 所述候选控制信道是一种聚合等级的候选控制信道和 /或所述 候选控制信道是一种 UERS的配置信息的候选控制信道。
36、 根据权利要求 25至 35中任一项所述的用户设备, 其特征在于, 所述确定模块, 包括:
所述控制信道的搜索空间所占的第一资源单元中包含当前用户设备的 一个候选控制信道的全部或部分, 所述候选控制信道是一种聚合等级的候 选控制信道和 /或所述候选控制信道是一种 UERS的配置信息的候选控制信 道。
37、 一种基站, 其特征在于, 包括:
获取模块, 用于获取控制信道的时频资源信息以及第一信息; 确定模块, 用于根据所述获取模块获取的所述时频资源信息和所述第 一信息, 确定所述控制信道的搜索空间;
第一发送模块, 用于在所述确定模块确定的所述搜索空间中, 向用户 设备发送所述控制信道。
38、 根据权利要求 37所述的基站, 其特征在于, 所述基站还包括: 第二发送模块, 用于向所述用户设备发送第一信令, 所述第一信令包 括所述时频资源信息和所述第一信息, 以便于所述用户设备根据所述时频 资源信息和所述第一信息, 确定所述控制信道的搜索空间。
39、 根据权利要求 37或 38所述的基站, 其特征在于, 所述获取模块 获取的所述第一信息包括用于发送所述控制信道的用户设备特定参考信号 UERS的配置信息, 和 /或所述搜索空间的位置信息。
40、 根据权利要求 39所述的基站, 其特征在于, 所述确定模块包括: 第一确定子模块, 用于根据所述时频资源信息、 所述时频资源信息与 搜索空间资源的第一映射关系以及所述位置信息, 确定所述搜索空间。
41、 根据权利要求 40所述的基站, 其特征在于, 所述第一确定子模块 包括:
第一确定单元, 用于根据所述时频资源信息以及所述第一映射关系, 确定所述搜索空间资源;
第二确定单元, 用于根据所述位置信息, 在所述第一确定单元确定的 所述搜索空间资源中确定所述搜索空间。
42、根据权利要求 39所述的基站, 其特征在于, 所述确定模块还包括: 第二确定子模块, 用于根据所述时频资源信息、 所述时频资源信息与 搜索空间资源的第一映射关系以及所述配置信息, 确定与所述配置信息相 应的所述搜索空间。
43、 根据权利要求 42所述的基站, 其特征在于, 所述第二确定子模块 包括:
第一确定单元, 用于根据所述时频资源信息以及所述第一映射关系, 确定所述搜索空间资源;
第三确定单元, 用于根据所述配置信息与所述搜索空间的第二映射关 系, 和 /或所述配置信息, 在所述第一确定单元确定的所述搜索空间资源中 确定与所述配置信息相应的所述搜索空间。
44、 根据权利要求 37至 43中任一项所述的基站, 其特征在于, 所述 确定模块还用于:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的至少一个控制信道占用至少两个资源块 RB中的每个 RB的部分 资源。
45、 根据权利要求 37至 44中任一项所述的基站, 其特征在于, 所述 确定模块还用于:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的至少一个控制信道占用至少两个 RB的部分或全部资源,所述至 少两个 RB占用一个子帧的第一时隙和第二时隙。
46、 根据权利要求 37至 45中任一项所述的基站, 其特征在于, 所述 确定模块还用于:
根据所述时频资源信息和所述第一信息, 确定所述搜索空间, 所述搜 索空间中的第一控制信道的第一部分资源占用的 RB或 RB对的序号为 i时, 所述第一控制信道的第二部分资源占用的 RB 或 RB 对的序号为 N +i - Ncan / M , 其中 M为自然数, Ncan为所述控制信道搜索空间包括的与 聚合水平相应的控制信道的数量, N为与所述时频资源信息相应的 RB或 RB对的数量, 或 N等于所述 Ncan。
47、 根据权利要求 37至 46中任一项所述的基站, 其特征在于, 所述 确定模块, 包括:
所述控制信道的搜索空间所占的第一资源单元中包含的当前用户设备 的候选控制信道的数量小于等于所述第一资源单元中能够包含的候选控制 信道的总数, 所述候选控制信道是一种聚合等级的候选控制信道和 /或所述 候选控制信道是一种 UERS的配置信息的候选控制信道。
48、 根据权利要求 37至 47中任一项所述的基站, 其特征在于, 所述 确定模块, 包括:
所述控制信道的搜索空间所占的第一资源单元中包含当前用户设备的 一个候选控制信道的全部或部分, 所述候选控制信道是一种聚合等级的候 选控制信道和 /或所述候选控制信道是一种 UERS的配置信息的候选控制信 道。
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