WO2018082636A1 - 控制信息的检测方法与发送方法及设备 - Google Patents

控制信息的检测方法与发送方法及设备 Download PDF

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Publication number
WO2018082636A1
WO2018082636A1 PCT/CN2017/109243 CN2017109243W WO2018082636A1 WO 2018082636 A1 WO2018082636 A1 WO 2018082636A1 CN 2017109243 W CN2017109243 W CN 2017109243W WO 2018082636 A1 WO2018082636 A1 WO 2018082636A1
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Prior art keywords
dci
search space
pdcch
control channels
type
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PCT/CN2017/109243
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English (en)
French (fr)
Inventor
李超君
邵家枫
成艳
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020197015444A priority Critical patent/KR102212799B1/ko
Priority to EP17866964.4A priority patent/EP3531766B1/en
Priority to JP2019523800A priority patent/JP2020501411A/ja
Publication of WO2018082636A1 publication Critical patent/WO2018082636A1/zh
Priority to US16/400,587 priority patent/US20190261332A1/en

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    • 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]
    • 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 signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/535Allocation or scheduling criteria for wireless resources based on resource usage policies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08Upper layer protocols
    • 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), DMT

Definitions

  • the present application relates to the field of wireless communications, and in particular, to a method and a method and a device for detecting control information.
  • the scheduling information configured for the terminal device such as the time-frequency resource allocation, the modulation and coding mode, and the like, and the network device also needs to notify the terminal device of the power control command information related to the uplink transmission.
  • These scheduling information and power control command information are referred to as downlink control information (DCI).
  • a network device mainly carries a DCI through a physical downlink control channel (PDCCH).
  • PDCH physical downlink control channel
  • the transmission time interval (TTI) length is 1 ms when performing DCI transmission.
  • Latency is one of the important factors affecting the user experience in wireless communication systems.
  • the emerging new services such as those related to the Internet of Vehicles, are also becoming more and more demanding.
  • the DCI transmission is performed based on the transmission time interval of 1 ms. When the DCI is transmitted, a large scheduling delay is generated, which cannot meet the requirements of low-latency services.
  • the present application provides a method and a method for detecting and transmitting control information to reduce the transmission delay of the DCI.
  • the present application provides a control information detecting method, the method comprising: determining, by a terminal device, a first search space and a second search space, where the first search space is part of a second search space; the terminal device Detecting at least one first type of DCI in the first search space; the terminal device detecting at least one second type of DCI in the second search space; wherein the first type of DCI is used for scheduling with a first time Length of data transmission, the second type of DCI is used to schedule data transmissions having a second length of time, the first length of time being less than the second length of time.
  • the data transmission with low delay requirement has a small search space, and the number of blind detections is small, so that the scheduling information can be quickly obtained, and the data processing speed is accelerated.
  • the second time length is 1 ms
  • the second search space includes a PDCCH CSS and a PDCCH UESS.
  • the first type DCI includes at least a first DCI
  • the second type DCI includes at least a second DCI.
  • the number of information bits of the first DCI is the same as the number of information bits of the second DCI.
  • the The detecting, by the terminal device, the at least one second type of DCI in the second search space includes: the terminal device detecting at least the second DCI of the DCI format 1A in the second search space.
  • the terminal device determines the first search space, including: the terminal The device determines the first search space according to the high layer signaling, where the high layer signaling indicates at least one of an aggregation level of the first search space and a number of candidate control channels.
  • the first search space is a part of the candidate in the PDCCH UESS
  • the search space composed of control channels. That is, the first search space is composed of a part of candidate control channels in the PDCCH UESS.
  • the first search space includes a part of the PDCCH UESS a search space composed of candidate control channels and a PDCCH CSS;
  • the first type of DCI includes at least the first DCI and the third DCI, wherein the first DCI includes means for notifying the terminal device according to the third DCI Information for data transmission having the first length of time is performed.
  • the terminal device in the first search space, detects at least one first type of DCI, including: the terminal The device detects the third DCI in the PDCCH CSS; the terminal device detects a first DCI in a search space composed of a part of candidate control channels in the PDCCH UESS; or, if the terminal device detects the The third DCI, the terminal device detects the first DCI in a search space composed of a part of the candidate control channels in the PDCCH UESS.
  • the search space that is formed by the part of the candidate control channels in the PDCCH UESS includes at least one of the following searches Space: a search space composed of A candidate control channels with an aggregation level of 1 in the PDCCH UESS; a search space composed of B candidate control channels with an aggregation level of 2 in the PDCCH UESS; a search space composed of C candidate control channels with an aggregation level of 4; a search space composed of D candidate control channels with an aggregation level of 8 in the PDCCH UESS; wherein A is a positive integer less than 6, and B is less than 6 Positive integer, C is 1 or 2, and D is 1 or 2.
  • the first search space when the first search space is composed of a part of candidate control channels in the PDCCH UESS, the first search space may be composed of at least one candidate control channel with an aggregation level of 1 in the PDCCH UESS; Alternatively, the first search space may be composed of at least B candidate control channels with an aggregation level of 2 in the PDCCH UESS; or the first search space may be at least C aggregation levels in the PDCCH UESS
  • the candidate control channel is composed of 4; or the first search space may be composed of at least D candidate control channels with an aggregation level of 8 in the PDCCH UESS.
  • the third DCI includes a frequency domain resource used for indicating data transmission occupied by the first time length At least one of information, sPDCCH configuration information, and UL Grant configuration information.
  • the sPDCCH configuration information indicates whether the sPDCCH region exists on the time unit a or the time unit b, the time unit a is the time unit in which the PDCCH region is located, and the time unit b is the first time unit after the PDCCH region;
  • the UL Grant configuration information indicates the UL A search space corresponding to the Grant, where the search space is located in the sPDCCH region.
  • the first search space includes a PDCCH CSS
  • the terminal device is The first search Detecting at least one first type of DCI in the space includes: detecting, by the terminal device, the third DCI in the PDCCH CSS.
  • the terminal device determines the third search space according to the sPDCCH configuration information that is included in the third DCI, and specifically includes: if the sPDCCH configuration information indicates that the sPDCCH does not exist on the time unit a or b a region, where the third search space includes a search space composed of a part of candidate control channels in the PDCCH UESS; if the sPDCCH configuration information indicates that there is an sPDCCH region on the time unit a or b, the third search space is located in the time unit sPDCCH region on a or b.
  • the method further includes: after determining the third search space, the terminal device is in the third search The space detects the first DCI.
  • the present application further provides a method for sending control information, including: determining, by a network device, at least one search space in a first search space and a second search space, where the first search space is a second search a portion of the space; the network device transmitting at least one downlink control information DCI in the at least one search space, the at least one DCI being at least one of a first type DCI and a second type DCI, wherein the first Type DCI is carried by the first search space, and the second type DCI is carried by the second search space; wherein the first type DCI is used to schedule data transmission with a first time length, the second The type DCI is used to schedule a data transmission having a second length of time that is less than the second length of time.
  • the network device may also send at least one first type DCI or in the second search space in the first search space. Transmitting at least one second type DCI; or the network device transmitting at least one first type DCI in the first search space and transmitting at least one second type DCI in the second search space.
  • the second time length is 1 ms;
  • the second search space includes a physical downlink control channel common search space PDCCH CSS and a physical downlink control channel user equipment.
  • Specific search space PDCCH UESS is 1 ms;
  • the first type DCI includes at least a first DCI
  • the second type DCI includes at least a second DCI.
  • the number of information bits of the first DCI is the same as the number of information bits of the second DCI.
  • the network device sends the at least one DCI in the at least one search space, including: the network device is in the Transmitting at least a second DCI of the DCI format 1A in the second search space.
  • the method further includes: The network device sends high layer signaling, and the high layer signaling indicates at least one of an aggregation level of the first search space and a number of candidate control channels.
  • the first search space is a part of the candidate control channel in the PDCCH UESS.
  • the composition of the search space is a part of the candidate control channel in the PDCCH UESS.
  • the first search space includes a part of the candidate control channel in the PDCCH UESS. a search space and a PDCCH CSS, the first type of DCI including at least the first DCI and the third DCI, wherein the first DCI includes means for notifying the terminal device to perform according to the third DCI
  • the first length of time Information about data transmission includes a part of the candidate control channel in the PDCCH UESS.
  • the network device in the at least one search space, sends the at least one DCI, including: the network device is in the Transmitting the third DCI in the PDCCH CSS; or, the network device sends the first DCI in a search space composed of a part of the candidate control channels in the PDCCH UESS; or the network device is in the PDCCH CSS Transmitting the third DCI, and transmitting the first DCI in a search space composed of a part of candidate control channels in the PDCCH UESS.
  • the search space formed by a part of the candidate control channels in the PDCCH UESS includes at least: a search space composed of a candidate control channel with an aggregation level of 1 in the PDCCH UESS; or a search space composed of B candidate control channels with an aggregation level of 2 in the PDCCH UESS; or, in the PDCCH UESS a search space composed of C candidate control channels with an aggregation level of 4; or a search space composed of D candidate control channels with an aggregation level of 8 in the PDCCH UESS; wherein A is a positive integer less than 6, and B is A positive integer less than 6, C is 1 or 2, and D is 1 or 2.
  • the present application further provides a terminal device, which may include a unit module, such as a determining unit, a detecting unit, and the like, for performing the method steps in various implementation manners of the first aspect.
  • a unit module such as a determining unit, a detecting unit, and the like
  • the function to be implemented by the unit module may be implemented by a processor in the terminal device, or may be implemented by the processor controlling other components in the terminal device.
  • the present application further provides a network device, which may include a unit module, such as a processing unit, a sending unit, and the like, for performing the method steps in various implementation manners of the second aspect.
  • a unit module such as a processing unit, a sending unit, and the like
  • the function to be implemented by the unit module may be implemented by a processor in the network device, or may be implemented by the processor controlling other components in the network device.
  • the present application further provides a storage medium, where the computer storage medium may store a program, where the program may implement some or all of the steps in each embodiment of the detection method including the control information provided by the application; or Some or all of the steps in the embodiments of the transmission method including the control information provided by the present application may be implemented.
  • the data transmission with low delay requirement has a small search space, and the number of blind detections is small, so that the scheduling information can be quickly obtained, and the data processing speed is accelerated.
  • FIG. 1 is a schematic flow chart of an embodiment of a method for detecting control information according to the present application
  • FIG. 2 is a schematic flowchart of an embodiment of a method for transmitting control information according to the present application
  • FIG. 3 is a schematic structural diagram of an embodiment of a terminal device according to the present application.
  • FIG. 4 is a schematic structural diagram of an embodiment of a network device according to the present application.
  • FIG. 5 is a schematic structural diagram of another embodiment of a terminal device according to the present application.
  • FIG. 6 is a schematic structural diagram of another embodiment of a network device according to the present application.
  • the embodiments of the present application can be applied to a network device and a terminal device (terminal device or terminal).
  • Equipment in a wireless communication system.
  • an LTE system or other wireless communication system using various radio access technologies, for example, using code division multiple access, frequency division multiple access, time division multiple access, orthogonal frequency division multiple access, single carrier frequency division multiple access, etc.
  • the subsequent evolution system such as the fifth generation (5G) system.
  • the embodiment of the present application is applicable to data transmission between a terminal device and a network device, data is transmitted between the terminal device and the terminal device, or data is transmitted between the network device and the network device.
  • the terminal device can be a device that provides voice or data connectivity to the user, a handheld device with wireless connectivity, or other processing device that is connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a radio access network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal
  • RAN radio access network
  • RAN radio access network
  • RAN can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal
  • it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and or data with a wireless access network.
  • a wireless terminal may also be called a system, a subscriber unit (SU), a subscriber station (SS), a mobile station (MS), a remote station (RS), an access point (access point). , AP), remote terminal (RT), access terminal (AT), user terminal (UT), user agent (UA), user equipment, or user equipment (user) Equipment,UE).
  • the network device involved in various embodiments of the present application may be a base station, or an access point, or may refer to a device in the access network that communicates with the wireless terminal through one or more sectors on the air interface.
  • the base station can be used to convert the received air frame with the IP packet as a router between the wireless terminal and the rest of the access network, wherein the rest of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a 5G base station (gNB, g-Node B), or may be an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, or even a base station in GSM or CDMA (Base Transceiver Station (BTS) or a base station (NodeB) in WCDMA is not limited in this application.
  • gNB 5G base station
  • GSM Global System for Mobile communications
  • CDMA Base Transceiver Station
  • NodeB base station
  • each radio frame is composed of 10 subframes of 1 ms length, each subframe including 2 slots.
  • each slot consists of 7 symbols, that is, each slot is numbered ⁇ #0, #1, #2, #3, #4, #5 , symbolic composition of #6 ⁇ ;
  • each slot consists of 6 symbols, that is, each slot is numbered ⁇ #0, #1, #2,# 3, #4, #5 ⁇ symbol composition.
  • both the uplink symbol and the downlink symbol are symbols.
  • the uplink symbol may be referred to as a single carrier-frequency division multiple access (SC-FDMA) symbol, and the downlink symbol may be referred to as an orthogonal frequency division multiplexing (OFDM) symbol.
  • SC-FDMA single carrier-frequency division multiple access
  • OFDM orthogonal frequency division multiplexing
  • the wireless communication system adopts an orthogonal frequency division multiple access (OFDMA) uplink multiple access method, and the uplink symbols may also be referred to as other types of symbols, such as OFDM symbols.
  • OFDM orthogonal frequency division multiplexing
  • the DCI is used to indicate data transmission, or the DCI is used to schedule data transmission.
  • the DCI may be used to schedule a physical uplink shared channel (PUSCH). Transmission or for scheduling physical downlink shared channel (PDSCH) transmission.
  • PUSCH physical uplink shared channel
  • PDSCH physical downlink shared channel
  • DCI can only be used to indicate scheduling information for data transmission, and is not used to trigger data transmission.
  • the downlink control channel carrying the DCI is a candidate downlink control channel in the search space, so the terminal device needs to determine the search space.
  • the downlink control channel is a channel for carrying DCI, that is, the DCI is carried on the downlink control channel, or the DCI is carried by the downlink control channel.
  • the downlink control channel may be formed by combining L control channel elements (CCEs), and L is a positive integer, which is called an aggregation level (AL).
  • L may be 1, 2, 4 or 8, that is, the aggregation level of the downlink control channel is 1, 2, 4 or 8.
  • the search space is composed of one or more candidate downlink control channels, and each candidate downlink control channel can be used to carry DCI.
  • the search space is a collection of candidate downlink control channels.
  • the terminal device needs to listen to the candidate downlink control channel, so the search space is also the candidate downlink control channel set monitored by the terminal device.
  • the search space consists of one or more PDCCHs, which may be referred to as a PDCCH search space.
  • the search space consists of one or more EPDCCHs, which may be referred to as an EPDCCH search space.
  • the search space may include two types: a common search space (CSS) and a UE specific search space (UESS).
  • the CSS is a search space that multiple terminal devices in the cell have to listen to
  • the UESS is a search space that needs to be monitored by a specific terminal device in the cell.
  • the PDCCH UESS is a UESS composed of a PDCCH defined by Rel-8
  • the PDCCH CSS is a CSS composed of a PDCCH defined by Rel-8
  • the EPDCCH UESS is a UESS composed of an EPDCCH defined by Rel-11.
  • FIG. 1 a flow chart of an embodiment of a control information detecting method is shown. The method described in this embodiment can be performed by a terminal device.
  • Step 101 The terminal device determines a first search space and a second search space, where the first search space is part of the second search space.
  • the first search space is configured to transmit at least one first type DCI
  • the second search space is used to transmit at least one second type DCI.
  • the first type of DCI is used to schedule first data having a first time length
  • the second type of DCI is used to schedule second data having a second time length
  • the first time length is less than the second length of time.
  • the first data may be the first downlink data or the first uplink data
  • the second data is the second downlink data or the second uplink data.
  • the first downlink data or the second downlink data may be data carried on a PDSCH
  • the first uplink data or the second uplink data may be data carried on a PUSCH.
  • the values of the lengths of the first time length and the second time may also be different according to the different delay requirements of the data service that is actually transmitted.
  • the first time length is less than the second time length.
  • the second time length is 1 ms, and the first time length is 2 symbols or 3 symbols; or the second time length is 1 ms, and the first time length is 1 a symbol, 2 symbols or 3 symbols; or, the second time length is 1 ms, and the first time length is 1 symbol or 2 symbols; or, the second time length is 1 ms, and The first time length is 4 symbols; or the second time length is 1 ms, and the first time length is 7 symbols; or the second time length is 1 ms, and the first time The length is 6 symbols.
  • the second time length is 1 ms
  • the actual transmission time length of the data transmission with the first time length described in the various embodiments of the present application may be less than 1 ms.
  • LTE LTE
  • the various physical channels in the system are designed according to the TTI length of 1ms, but the time domain resources occupied by the actual data transmission can be less than 1ms.
  • the first 1, 2, 3 or 4 symbols in one downlink subframe may be used to transmit the PDCCH. Therefore, the downlink data transmission (for example, PDSCH transmission) with a TTI length of 1 ms may occupy less than 1 ms.
  • the last symbol in an uplink subframe may be used to transmit a SRS (Sounding Reference Signal), and therefore, the time domain resource occupied by the uplink data transmission (for example, PUSCH transmission) with a TTI length of 1 ms is also used. Can be less than 1ms.
  • SRS Sounding Reference Signal
  • the second search space may include a PDCCH CSS and a PDCCH UESS.
  • the PDCCH CSS includes four candidate control channels with an aggregation level of four and two candidate control channels with an aggregation level of 8.
  • the PDCCH CSS is composed of the first 16 control channel elements (CCEs) in the PDCCH region.
  • the PDCCH UESS includes six candidate control channels with an aggregation level of 1, six candidate control channels with an aggregation level of two, two candidate control channels with an aggregation level of four, and two candidate control channels with an aggregation level of 8.
  • the PDCCH UESS is located in the PDCCH region, and the starting position in the PDCCH region is determined according to the radio network temporary identifiers (RNTIs) specific to the terminal device.
  • RNTIs radio network temporary identifiers
  • the PDCCH region is the first 1 to 3 OFDM symbols of each subframe.
  • the PDCCH region is the first 2 to 4 symbols of each subframe.
  • the number of symbols in the PDCCH region may be indicated by a physical control format indicator channel (PCFICH) indication or a higher layer signaling. Since the 1 ms data transmission is not demanding for the delay, the same search space as the prior art is employed. Compared with the prior art, the number of PDCCH blind detections for searching for 1 ms data transmission is unchanged, and thus has no effect on 1 ms data transmission.
  • PCFICH physical control format indicator channel
  • the first search space may also be composed of a part of candidate control channels in the PDCCH UESS.
  • the first search space may be composed of all of the PDCCH CSS and a part of candidate control channels in the PDCCH UESS.
  • the first search space is the PDCCH CSS.
  • the search space composed of a part of candidate control channels in the PDCCH UESS may include at least one of: a search space composed of A candidate control channels with an aggregation level of 1 in the PDCCH UESS; and B aggregations in the PDCCH UESS a search space composed of candidate control channels of level 2; a search space composed of C candidate control channels of aggregation level 4 in the PDCCH UESS; and candidate communication channels of D aggregation levels of 8 in the PDCCH UESS Search space.
  • a search space composed of a part of the candidate control channels in the PDCCH UESS includes at least one search space: a search space composed of a candidate channel of the first A aggregation level of the PDCCH UESS; the PDCCH UESS a search space consisting of the first B candidate control channels with an aggregation level of 2; a search space composed of the first C candidate control channels with an aggregation level of 4 in the PDCCH UESS; and the first D aggregations in the PDCCH UESS A search space consisting of candidate control channels of level 8.
  • A is a positive integer less than 6
  • B is a positive integer less than 6
  • C is 1 or 2
  • D is 1 or 2.
  • the second search space includes all of the PDCCH CSS and a part of the PDCCH UESS.
  • the part of the PDCCH UESS includes at least one search space: a search space composed of E candidate control channels with an aggregation level of 1 in the PDCCH UESS, and F candidate control letters with an aggregation level of 2 in the PDCCH UESS.
  • a search space composed of the candidate control channels of the aggregation level of the PDCCH UESS and a search space composed of the candidate control channels of the aggregation level of the PDCCH UESS.
  • E is a positive integer greater than or equal to A and less than 6; F is a positive integer greater than or equal to B and less than 6; if C is 1, G is 1 or 2, if C is 2, G is 2; Is 1, H is 1 or 2, and if D is 2, H is 2.
  • the terminal device may determine the first search space and/or the second search space according to the indication of the high layer signaling.
  • the terminal device determines the first search space, where the terminal device determines the first search space according to the high layer signaling, where the high layer signaling is used to indicate an aggregation level of the first search space. / or the number of candidate control channels.
  • the higher layer signaling indicates at least one of A, B, C, and D.
  • the terminal device determines the second search space, where the terminal device determines the second search space according to the high layer signaling, where the high layer signaling is used to indicate an aggregation level of the second search space. / or the number of candidate control channels.
  • the higher layer signaling indicates at least one of E, F, G, and H.
  • Step 102 The terminal device detects at least one first type DCI in the first search space, and detects at least one second type DCI in the second search space.
  • the terminal device may detect at least one first type of DCI in the first search space.
  • the terminal device may detect at least one second type DCI in the second search space.
  • the first type of DCI and the second type of DCI each include at least one DCI.
  • the first type of DCI includes at least a first DCI
  • the at least one second type of DCI includes a second DCI, the number of information bits of the first DCI and the number of information bits of the second DCI. the same. That is, the payload size of the first DCI and the second DCI are the same.
  • the second DCI is DCI format 1A.
  • the detecting, by the terminal device, the at least one second type of DCI in the second search space may include: the terminal device detecting at least the format of the DCI format 1A in the second search space. Two DCI.
  • the first type of DCI includes at least a first DCI; and the at least one second type of DCI includes a DCI formatted as DCI format 1C, and the DCI format is DCI format 1A, and the format is DCI format 3/3A. DCI and fourth DCI.
  • the number of information bits of the first DCI is the same as the number of DCI information bits of the DCI format 1A.
  • the detecting, by the terminal device, the at least one second type of DCI in the second search space may include: the terminal device detecting DCI format 1C, DCI format 1A and DCI format 3 in the PDCCH CSS.
  • the terminal device detects the DCI format 1A and the fourth DCI in a part of the search space in the PDCCH UESS or the PDCCH UESS.
  • the fourth DCI may be DCI format1/1B/1C/1D/2/2A/2B/2C/2D/4/5/6.
  • the terminal device When performing terminal DCI detection, the terminal device also needs to distinguish between the first DCI and the second DCI.
  • both the first DCI and the second DCI contain an information field for indicating the DCI type.
  • the information field indicates that the DCI is the first DCI or the second DCI. In this way, the terminal device can distinguish different DCIs through the information domain of the DCI.
  • the first DCI and the second DCI are scrambled using different radio network temporary identifiers (RNTIs).
  • RNTIs radio network temporary identifiers
  • the cyclic redundancy code (CRC) of the first DCI and the second DCI may be scrambled with different masks. In this way, the terminal device can distinguish different DCIs by different masks.
  • the first type of DCI includes at least a first DCI and a third DCI
  • the first DCI includes, configured to notify the terminal device to perform data transmission with the first time length according to the third DCI. information.
  • the third DCI may also be referred to as slow DCI (slow DCI), and the first DCI may also be referred to as fast DCI (fast DCI).
  • the third DCI is the same as the number of information bits of the DCI format 1A or the DCI format 1C.
  • the third DCI includes information indicating a frequency domain resource occupied by data transmission having a first time length, the first DCI instructing the terminal device to perform data having the first time length on the frequency domain resource. transmission.
  • the third DCI further includes sPDCCH (PDCCH for short TTI) configuration information, where the transmission time length of the downlink data or the uplink data of the DCI scheduled by the sPDCCH is less than or equal to 0.5 ms.
  • the sPDCCH configuration information indicates whether there is an sPDCCH region on a time unit (remembered as time unit a) where the PDCCH region is located, or the sPDCCH configuration information indicates whether a sPDCCH region exists on the first time unit (referred to as time unit b) after the PDCCH region .
  • a downlink subframe may include at least 2 time units, each time unit being composed of at least one symbol.
  • a subframe includes 14 symbols divided into 6 time units, including 3, 2, 2, 2, 2, 3 symbols, respectively, or 2, 3, 2, 2, 2, 3 symbols, respectively, or Includes 2, 2, 3, 2, 2, and 3 symbols, respectively.
  • one subframe includes 14 symbols and is equally divided into 2 time units.
  • the sPDCCH configuration information indicates whether there is an sPDCCH region on the first time unit. For example, if the PDCCH region includes 2 symbols and is located in the first time unit, the sPDCCH configuration information indicates whether there is an sPDCCH region on the first time unit (ie, the second time unit) after the PDCCH region.
  • the sPDCCH configuration information may be configured according to a load of the PDCCH region.
  • the sPDCCH configuration information may indicate that the sPDCCH region exists on the time unit a or b, so that the first DCI may also be carried by the sPDCCH in the sPDCCH region; if the PDCCH region load is small, the sPDCCH configuration information may be The sPDCCH region is not present on the indicating time unit a or b, so that the first DCI can only be carried by the PDCCH in the PDCCH region, and the overhead of the sPDCCH region is avoided.
  • the third DCI also includes UL Grant (uplink authorization) configuration information.
  • the UL Grant configuration information indicates a search space corresponding to the UL Grant.
  • the search space corresponding to the UL Grant is located in the sPDCCH region. In this way, even if the terminal device does not receive the downlink data, the UL Grant can be detected in the search space corresponding to the UL Grant, and the uplink data is sent to the network device.
  • the search space corresponding to the UL Grant is configured to multiple terminal devices, and the terminal device is one of the multiple terminal devices.
  • the third DCI is group-specific, that is, configured to a group of terminal devices, and therefore carried by a candidate control channel in the PDCCH CSS.
  • the terminal device is one of the group of terminal devices.
  • the first DCI is terminal device specific and therefore carried over the candidate control channel in the PDCCH UESS.
  • the first search space includes a search space composed of all of the PDCCH CSS and a part of candidate control channels in the PDCCH UESS.
  • the terminal device detects the third DCI in the PDCCH CSS; the terminal device is in the PDCCH UESS Detecting a first DCI in a search space composed of a part of candidate control channels, or if the terminal device detects the third DCI, the terminal device A first DCI is detected in a search space composed of a part of candidate control channels in the PDCCH UESS.
  • the third DCI includes sPDCCH configuration information, and if the sPDCCH configuration information indicates that the sPDCCH region exists, the terminal device further needs to determine a fourth search space, and detect the first DCI in the fourth search space, where the fourth search space is Located in the sPDCCH region on time unit a or b.
  • the at least one first type DCI includes a third DCI.
  • the third DCI is group-specific and therefore carried over the candidate control channel within the PDCCH CSS.
  • the terminal device also detects the first DCI, which is specific to the terminal device, or is carried by the candidate control channel in the PDCCH UESS or by the sPDCCH in the sPDCCH region on the time unit a or b.
  • the terminal device determines that the first search space includes a PDCCH CSS.
  • the detecting, by the terminal device, the at least one first type of DCI in the first search space includes: the terminal device detecting the third DCI in the PDCCH CSS.
  • the terminal device determines the third search space according to the sPDCCH configuration information that is included in the third DCI, and specifically includes: if the sPDCCH configuration information indicates that the sPDCCH does not exist on the time unit a or b a region, where the third search space includes a search space composed of a part of candidate control channels in the PDCCH UESS; if the sPDCCH configuration information indicates that there is an sPDCCH region on the time unit a or b, the third search space is located in the time unit sPDCCH region on a or b.
  • the terminal device may also detect the first DCI in the third search space.
  • the first DCI, the third DCI, and the sPDCCH configuration information described in this paragraph may refer to the above definition.
  • the terminal device determines that the first search space and the second search space do not have a strict timing relationship, and may first determine the first search space and then determine the second search space, or first determine the second search space and then determine the first search.
  • the space, or both, the first search space and the second search space are determined at the same time, and the application is not limited.
  • the data transmission with low delay requirement has a small search space, and the number of blind detections is small, so that the scheduling information can be quickly obtained, and the data processing speed is accelerated.
  • the number of candidate control channels to be detected in the PDCCH region does not increase, and the type of information bits of the detected DCI does not increase. Therefore, compared with the prior art, the number of PDCCH blind detections in the PDCCH region does not increase, and the processing time of 1 ms data transmission is not affected.
  • FIG. 2 it is a schematic flowchart of an embodiment of a method for transmitting control information according to the present application.
  • the method described in this embodiment can be performed by a network device. As shown in FIG. 2, this embodiment may include the following steps:
  • Step 201 The network device determines at least one search space in the first search space and the second search space, where the first search space is part of the second search space.
  • the first type of DCI is used to schedule data transmission with a first time length
  • the second type of DCI is used to schedule data transmission with a second time length, where the first time length is less than the second time length
  • Step 202 The network device sends at least one downlink control information DCI in the at least one search space, where the at least one DCI is at least one of a first type DCI and a second type DCI, where the first type The DCI is carried by the first search space, and the second type of DCI is carried by the second search space.
  • the at least one search space includes a first search space.
  • the network device may send the at least one first type DCI in the first search space.
  • the at least one search space includes a second search space. Then, after the network device determines the second search space, the network device may send the at least one second type DCI in the second search space.
  • the at least one search space includes a first search space and a second search space. Then the network device is After determining the first search space and the second search space, the network device may transmit at least one first type DCI in the first search space and at least one second type DCI in the second search space.
  • the network device sends at least the second DCI in the format of DCI format 1A in the second search space.
  • the network device sends the third DCI in the PDCCH CSS; And transmitting a first DCI in a search space composed of a part of candidate control channels in the PDCCH UESS.
  • the network device may send the first DCI in a search space composed of a part of candidate control channels in the PDCCH UESS only when the third DCI is sent in the PDCCH CSS.
  • the network device may send high layer signaling after determining the first search space, where the high layer signaling indicates an aggregation level or a candidate control channel of the first search space. At least one of the numbers. That is, the high layer signaling may indicate an aggregation level of the first search space; or may indicate a number of candidate control channels; or may indicate both an aggregation level of the first search space and a candidate control channel. Number.
  • the network device may also send at least one first in the first search space.
  • At least one first type DCI may be sent only in the first search space; if the network device only determines the second search space, then only the Transmitting, by the first search space, at least one first type of DCI; if the network device determines both the first search space and the second search space, the at least one first type of DCI may be sent only in the first search space; or Or transmitting at least one second type DCI only in the second search space; or, transmitting at least one first type DCI and at least one in the second search space in the first search space The second type of DCI.
  • first search space the second search space
  • first time length the second time length
  • first type DCI the first type DCI
  • related content of the second type DCI are in this embodiment.
  • the descriptions are relatively simple, and the relevant embodiments can be referred to in the related embodiments, and will not be described herein.
  • FIG. 3 it is a schematic structural diagram of an embodiment of an application terminal device.
  • the terminal device can be used to execute the detection method of the control information corresponding to FIG.
  • the terminal device may include: a determining unit 301 and a detecting unit 302.
  • the determining unit 301 and the detecting unit 302 can all be implemented by a processor in the terminal device.
  • the determining unit 301 is configured to determine a first search space and a second search space, where the first search space is a part of the second search space, and the detecting unit 302 is configured to detect at least one part in the first search space.
  • a type of DCI detecting at least one second type of DCI in the second search space; wherein the first type of DCI is for scheduling data transmissions having a first time length, the second type of DCI being used for scheduling a second time length of data transmission, the first time length being less than the second time length.
  • the second time length is 1 ms
  • the second search space includes a PDCCH CSS and a PDCCH UESS.
  • the first type of DCI includes at least a first DCI
  • the second type of DCI includes at least a second DCI, where the number of information bits of the first DCI and the number of information bits of the second DCI are the same.
  • the detecting unit 302 is further configured to detect at least the second DCI of the DCI format 1A in the second search space.
  • the determining unit 301 is specifically configured to determine, according to the high layer signaling, the first search space, where the high layer signaling indicates at least one of an aggregation level of the first search space and a number of candidate control channels. .
  • the first search space is a search space composed of a part of candidate control channels in the PDCCH UESS.
  • the first search space includes a search space and a PDCCH CSS that are composed of a part of candidate control channels in the PDCCH UESS, where the first type DCI includes at least the first DCI and the third DCI, where The first DCI includes information for notifying the terminal device to perform data transmission with the first time length according to the third DCI.
  • the detecting unit 302 is further configured to detect the third DCI in the PDCCH CSS, and detect a first DCI in a search space formed by a part of candidate control channels in the PDCCH UESS; or Detecting the third DCI, the terminal device detects a first DCI in a search space composed of a part of candidate control channels in the PDCCH UESS.
  • the search space consisting of a part of candidate control channels in the PDCCH UESS includes at least one search space: a search space composed of A candidate control channels with an aggregation level of 1 in the PDCCH UESS; the PDCCH UESS a search space composed of B candidate control channels of aggregation level 2; a search space composed of C candidate control channels of aggregation level 4 in the PDCCH UESS; D aggregation levels of 8 in the PDCCH UESS A search space composed of candidate control channels; wherein A is a positive integer less than 6, B is a positive integer less than 6, C is 1 or 2, and D is 1 or 2.
  • the first search space is a PDCCH CSS
  • the detecting unit 302 is further configured to detect the third DCI in the PDCCH CSS.
  • the determining unit 301 is further configured to determine the third search space according to the sPDCCH configuration information in the third DCI. If the sPDCCH configuration information indicates that there is no sPDCCH region on the time unit a or b, the third search space includes a search space composed of a part of the candidate control channels in the PDCCH UESS; if the sPDCCH configuration information indicates the time unit a or b There is an sPDCCH region, then the third search space is located in the sPDCCH region on time unit a or b.
  • the detecting unit 302 is further configured to detect the first DCI in the third search space. For details, refer to the description of the foregoing embodiment, and details are not described herein again.
  • FIG. 4 it is a schematic structural diagram of an embodiment of a network device according to the present application.
  • the network device may be configured to perform a method for transmitting control information corresponding to FIG. 2 .
  • the network device may include: a processing unit 401 and a sending unit 402.
  • the processing unit 401 is configured to determine at least one of the first search space and the second search space, where the first search space is part of the second search space, and the sending unit 402 is configured to be in the at least one search space Transmitting at least one downlink control information DCI, the at least one DCI being at least one of a first type of DCI and a second type of DCI, wherein the first type of DCI is carried by the first search space, the second Type DCI is carried by the second search space; wherein the first type DCI is used to schedule data transmissions having a first time length, and the second type DCI is used to schedule data transmissions having a second time length, The first time length is less than the second time length.
  • the second time length is 1 ms;
  • the second search space includes a physical downlink control channel common search space PDCCH CSS and a physical downlink control channel user equipment specific search space PDCCH UESS.
  • the first type of DCI includes at least a first DCI
  • the second type of DCI includes at least a second DCI, where the number of information bits of the first DCI and the number of information bits of the second DCI are the same.
  • the sending unit 402 is further configured to send at least the second DCI in the format of the DCI format 1A in the second search space.
  • the sending unit 402 is further configured to send high layer signaling, where the high layer signaling indicates at least one of an aggregation level of the first search space and a number of candidate control channels.
  • the first search space is a search space composed of a part of candidate control channels in the PDCCH UESS.
  • the first search space includes a search space composed of a part of candidate control channels in the PDCCH UESS and a PDCCH CSS, where the first type DCI includes at least the first DCI and the third DCI, where the first A DCI includes information for informing the terminal device to perform data transmission with the first time length according to the third DCI.
  • the sending unit 402 is further configured to send the third DCI in the PDCCH CSS; or send the first DCI in a search space that is formed by a part of the candidate control channels in the PDCCH UESS; or Transmitting the third DCI in the PDCCH CSS, and transmitting the first DCI in a search space composed of a part of candidate control channels in the PDCCH UESS.
  • the search space consisting of a part of the candidate control channels in the PDCCH UESS includes at least: a search space composed of A candidate control channels with an aggregation level of 1 in the PDCCH UESS; or, in the PDCCH UESS a search space composed of B candidate control channels with an aggregation level of 2; or a search space composed of C candidate control channels with an aggregation level of 4 in the PDCCH UESS; or D aggregation levels in the PDCCH UESS
  • FIG. 5 it is a schematic structural diagram of another embodiment of a terminal device according to the present application.
  • FIG. 5 is a schematic structural diagram of an embodiment of a terminal device according to the present application.
  • the terminal device may be the terminal device in any of the foregoing embodiments, and may be used to perform the method steps in the method for detecting control information shown in FIG. 1.
  • the terminal device may include a processor 501, a memory 502, and a transceiver 503.
  • the transceiver 503 may include components such as a receiver 5031, a transmitter 5032, and an antenna 5033.
  • the terminal device may also include more or less components, or a combination of certain components, or different component arrangements, which is not limited in this application.
  • the processor 501 is a control center of the terminal device, and connects various parts of the entire terminal device by using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 502, and calling data stored in the memory, To perform various functions of the terminal device and/or process data.
  • the processor 501 may be composed of an integrated circuit (IC), for example, may be composed of a single packaged IC, or may be composed of a plurality of packaged ICs that have the same function or different functions.
  • the processor may include only a central processing unit (CPU), or may be a GPU, a digital signal processor (DSP), and a control chip (eg, a baseband chip) in the transceiver 503. The combination.
  • the CPU may be a single operation core, and may also include a multi-operation core.
  • the transceiver 503 is configured to establish a communication channel, and the terminal device is connected to the receiving device through the communication channel, thereby implementing data transmission between the terminal devices.
  • the transceiver 503 may include a wireless local area network (WLAN) module, a Bluetooth module, a baseband module, and the like, and a radio frequency (RF) circuit corresponding to the communication module.
  • WLAN wireless local area network
  • RF radio frequency
  • Wireless local area network communication Bluetooth Communication
  • infrared communication and/or cellular communication system communication, such as wideband code division multiple access (WCDMA) and/or high speed downlink packet access (HSDPA).
  • WCDMA wideband code division multiple access
  • HSDPA high speed downlink packet access
  • the transceiver 503 is used to control communication of components in the terminal device and can support direct memory access.
  • the various transceivers 503 in the transceiver 503 are generally in the form of integrated circuit chips, and can be selectively combined without including all the transceivers 503 and Corresponding antenna group.
  • the transceiver 503 can include only baseband chips, radio frequency chips, and corresponding antennas to provide communication functionality in a cellular communication system.
  • the wireless communication connection established via the transceiver 503, such as wireless local area network access or WCDMA access may be connected to a cellular network or the internet.
  • a communication module, such as a baseband module, in the transceiver 503 can be integrated into the processor, typically an APQ+MDM series platform such as that provided by Qualcomm.
  • the radio frequency circuit is used for receiving and transmitting signals during information transmission and reception or during a call. For example, after the downlink information of the network device is received, it is processed by the processor; in addition, the data designed for the uplink is sent to the network device.
  • the radio frequency circuit includes well-known circuits for performing these functions, including but not limited to an antenna system, a radio frequency transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a codec. (codec) chipset, Subscriber Identity Module (SIM) card, memory, etc.
  • the RF circuit can communicate with the network and other devices through wireless communication.
  • the wireless communication may use any communication standard or protocol, including but not limited to global system of mobile communication (GSM), general packet radio service (gprs), code division multiple access (code) Division multiple access (CDMA), wideband code division multiple access (WCDMA), high speed uplink packet access (HSUPA), long term evolution (LTE) , email, short messaging service (SMS), etc.
  • GSM global system of mobile communication
  • gprs general packet radio service
  • code division multiple access code division multiple access
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • HSUPA high speed uplink packet access
  • LTE long term evolution
  • email short messaging service
  • the terminal device may be used to implement various method steps included in the method for detecting control information in the foregoing embodiment.
  • the function to be implemented by the determining unit 301 can be implemented by the processor 501, and can be represented by the processor 501 in hardware.
  • the function to be implemented by the sending unit of the detecting unit 302 may also be implemented by the processor 501 of the terminal device, or may also be implemented by the transceiver 503 controlled by the processor 501, and may be represented by the processor in hardware. 501, or a combination of the processor 501 and the transceiver 503.
  • FIG. 6 is a schematic structural diagram of another embodiment of a network device according to the present application.
  • the network device in this embodiment may be used to perform the method steps in the method for transmitting control information shown in FIG. 1.
  • the network device may be composed of a processor 601, a memory 602, a transceiver 603, and the like.
  • the processor 601 is a control center of the network device, and connects various parts of the entire network device by using various interfaces and lines, by running or executing software programs and/or modules stored in the memory, and calling data stored in the memory, Perform various functions of the network device and/or process data.
  • the processor may be a central processing unit (CPU), a network processor (NP) or a combination of a CPU and an NP.
  • the processor may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the memory 602 may include a volatile memory, such as a random access memory (RAM), and may also include a non-volatile memory, such as a flash memory.
  • RAM random access memory
  • non-volatile memory such as a flash memory.
  • HDD hard disk drive
  • SSD solid-state drive
  • a program or code may be stored in the memory, and the processor in the network element may implement the function of the network element by executing the program or code.
  • the network device may be used to implement various method steps included in the method for transmitting control information in the foregoing embodiment.
  • the function to be implemented by the processing unit 401 can be implemented by the processor 601, and can be represented by the processor 601 on hardware.
  • the function to be implemented by the sending unit 302 may also be implemented by the processor 601 of the terminal device, or may be implemented by the transceiver 603 controlled by the processor 601, and may be represented by the processor in hardware. 601, or a combination of the processor 601 and the transceiver 603.
  • the application further provides a computer storage medium, wherein the computer storage medium may store a program, and the program may include various embodiments of the method for detecting control information or the method for transmitting control information provided by the application. Some or all of the steps.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
  • the technology in the embodiments of the present application can be implemented by means of software plus a necessary general hardware platform.
  • the technical solution in the embodiments of the present application may be embodied in the form of a software product in essence or in the form of a software product, and the computer software product may be stored in a storage medium such as a ROM/RAM. , a diskette, an optical disk, etc., including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present application or portions of the embodiments.
  • a computer device which may be a personal computer, server, or network device, etc.
  • each embodiment of the present application is an LTE system as an example, but this does not mean that the embodiment of the present application is only applicable to the LTE system. In fact, any wireless communication system that performs data transmission through scheduling.
  • the solution provided by the embodiment of the present application can be adopted.
  • the embodiments of the present application described above are not intended to limit the scope of the present application.

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Abstract

本申请提供了控制信息的检测方法与发送方法及设备。所述检测方法包括:终端设备确定第一搜索空间和第二搜索空间,所述第一搜索空间为第二搜索空间的一部分;所述终端设备在所述第一搜索空间检测至少一个第一类型下行控制信息(DCI);所述终端设备在所述第二搜索空间中检测至少一个第二类型DCI;其中,所述第一类型DCI用于调度具有第一时间长度的数据传输,所述第二类型DCI用于调度具有第二时间长度的数据传输,所述第一时间长度小于所述第二时间长度。采用本申请所述的方法或设备,具有低时延需求的数据传输的搜索空间较小,盲检测次数少,进而可以快速获取到调度信息,加快数据的处理速度。

Description

控制信息的检测方法与发送方法及设备
本申请要求于2016年11月3日提交中国专利局、申请号为201610959479.0、发明名称为“控制信息的检测方法与发送方法及设备”的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
本申请涉及无线通信领域,尤其涉及控制信息的检测方法与发送方法及设备。
背景技术
备配置给终端设备的调度信息,例如时频资源分配、调制编码方式等,另外,网络设备也需要通知终端设备与上行传输相关的功率控制命令信息。这些调度信息和功率控制命令信息被称为下行控制信息(downlink control information,DCI)。
在长期演进(long term evolution,LTE)系统中,网络设备主要通过物理下行控制信道(physical downlink control channel,PDCCH)来承载DCI。在当前的无线通信系统中,无论是PDCCH,还是增强物理下行控制信道(enhanced PDCCH,ePDCCH),在进行DCI传输时,传输时间间隔(transmission time interval,TTI)长度都是1ms。
由于无线通信系统中,时延(latency)是影响用户体验的重要因素之一。而不断出现的新业务,比如车联网相关的业务等,对时延提的要求也出越来越高。而基于长度为1ms的传输时间间隔进行DCI传输,在传输DCI时会产生比较大调度时延,无法满足低时延业务的需求。
发明内容
本申请提供了控制信息的检测方法与发送方法及设备,以降低DCI的传输时延。
第一方面,本申请提供了一种控制信息检测方法,该方法包括:终端设备确定第一搜索空间和第二搜索空间,所述第一搜索空间为第二搜索空间的一部分;所述终端设备在所述第一搜索空间检测至少一个第一类型DCI;所述终端设备在所述第二搜索空间中检测至少一个第二类型DCI;其中,所述第一类型DCI用于调度具有第一时间长度的数据传输,所述第二类型DCI用于调度具有第二时间长度的数据传输,所述第一时间长度小于所述第二时间长度。
采用本实现方式,具有低时延需求的数据传输的搜索空间较小,盲检测次数少,进而可以快速获取到调度信息,加快数据的处理速度。
结合第一方面,在第一方面第一种可能的实现方式中,所述第二时间长度为1ms,所述第二搜索空间包括PDCCH CSS和PDCCH UESS。
结合第一方面第一种可能的实现方式,在第一方面第二种可能的实现方式中,所述第一类型DCI至少包括第一DCI,所述第二类型DCI至少包括第二DCI,所述第一DCI的信息比特数和所述第二DCI的信息比特数相同。
结合第一方面第二种可能的实现方式,在第一方面第三种可能的实现方式中,所述终 端设备在所述第二搜索空间中检测至少一个第二类型DCI,包括:所述终端设备在所述第二搜索空间中至少检测格式为DCI format 1A的第二DCI。
结合第一方面或第一方面第一至三种可能的实现方式其中任意一种,在第一方面第四种可能的实现方式中,所述终端设备确定第一搜索空间,包括:所述终端设备根据高层信令确定所述第一搜索空间,所述高层信令指示所述第一搜索空间的聚合级别和候选控制信道个数中的至少一个。
结合第一方面或第一方面第一至四种可能的实现方式其中任意一种,在第一方面第五种可能的实现方式中,所述第一搜索空间为所述PDCCH UESS中的一部分候选控制信道组成的搜索空间。即,所述第一搜索空间由所述PDCCH UESS中的一部分候选控制信道组成。
结合第一方面或第一方面第一至四种可能的实现方式其中任意一种,在第一方面第六种可能的实现方式中,所述第一搜索空间包括由所述PDCCH UESS中的一部分候选控制信道组成的搜索空间和PDCCH CSS;所述第一类型DCI至少包括所述第一DCI和第三DCI,其中,所述第一DCI包含用于通知所述终端设备根据所述第三DCI进行具有所述第一时间长度的数据传输的信息。
结合第一方面第六种可能的实现方式,在第一方面第七种可能的实现方式中,所述终端设备在所述第一搜索空间中检测至少一个第一类型DCI,包括:所述终端设备在所述PDCCH CSS中检测所述第三DCI;所述终端设备在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中检测第一DCI;或者,若所述终端设备检测到所述第三DCI,所述终端设备在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中检测第一DCI。
结合第一方面第五至七种可能的实现方式中任一种,在第一方面第八种可能的实现方式中,所述PDCCH UESS中的一部分候选控制信道组成的搜索空间包括以下至少一个搜索空间:所述PDCCH UESS中的A个聚合级别为1的候选控制信道组成的搜索空间;所述PDCCH UESS中的B个聚合级别为2的候选控制信道组成的搜索空间;所述PDCCH UESS中的C个聚合级别为4的候选控制信道组成的搜索空间;所述PDCCH UESS中的D个聚合级别为8的候选控制信道组成的搜索空间;其中,A为小于6的正整数,B为小于6的正整数,C为1或2,D为1或2。即,当所述第一搜索空间由所述PDCCH UESS中的一部分候选控制信道组成时,所述第一搜索空间至少可以由所述PDCCH UESS中的A个聚合级别为1的候选控制信道组成;或者,所述第一搜索空间至少可以由所述PDCCH UESS中的B个聚合级别为2的候选控制信道组成;或者,所述第一搜索空间至少可以由所述PDCCH UESS中的C个聚合级别为4的候选控制信道组成;或者,所述第一搜索空间至少可以由所述PDCCH UESS中的D个聚合级别为8的候选控制信道组成。
结合第一方面第六或七种可能的实现方式,在第一方面第九种可能的实现方式中,所述第三DCI包括用于指示具有第一时间长度的数据传输占用的频域资源的信息,sPDCCH配置信息和UL Grant配置信息中的至少一种。其中,sPDCCH配置信息指示时间单元a或时间单元b上是否存在sPDCCH区域,时间单元a为PDCCH区域所在的时间单元,时间单元b为PDCCH区域之后的第一个时间单元;UL Grant配置信息指示UL Grant对应的搜索空间,所述搜索空间位于sPDCCH区域。
结合第一方面或第一方面第一至四种可能的实现方式其中任意一种,在第一方面第十种可能的实现方式中,所述第一搜索空间包括PDCCH CSS,所述终端设备在所述第一搜索 空间中检测至少一个第一类型DCI,包括:所述终端设备在所述PDCCH CSS中检测所述第三DCI。在所述终端设备检测并接收到第三DCI之后,所述终端设备根据第三DCI包含的sPDCCH配置信息确定第三搜索空间,具体包括:若sPDCCH配置信息指示时间单元a或b上不存在sPDCCH区域,那么所述第三搜索空间包括所述PDCCH UESS中的一部分候选控制信道组成的搜索空间;若sPDCCH配置信息指示时间单元a或b上存在sPDCCH区域,那么所述第三搜索空间位于时间单元a或b上的sPDCCH区域。
结合第一方面第十种可能的实现方式,在第一方面第十一种可能的实现方式中,所述方法还包括:在确定第三搜索空间之后,所述终端设备在所述第三搜索空间检测第一DCI。
第二方面,本申请还提供了一种控制信息的发送方法,包括:网络设备确定第一搜索空间和第二搜索空间中的至少一个搜索空间,其中,所述第一搜索空间为第二搜索空间的一部分;所述网络设备在所述至少一个搜索空间中发送至少一个下行控制信息DCI,所述至少一个DCI为第一类型DCI和第二类型DCI中的至少一个,其中,所述第一类型DCI由所述第一搜索空间承载,所述第二类型DCI由所述第二搜索空间承载;其中,所述第一类型DCI用于调度具有第一时间长度的数据传输,所述第二类型DCI用于调度具有第二时间长度的数据传输,所述第一时间长度小于所述第二时间长度。或者,在确定第一搜索空间和第二搜索空间中的至少一个搜索空间后,所述网络设备也可以在所述第一搜索空间发送至少一个第一类型DCI或在所述第二搜索空间中发送至少一个第二类型DCI;或者,所述网络设备在所述第一搜索空间发送至少一个第一类型DCI和在所述第二搜索空间中发送至少一个第二类型DCI。
结合第二方面,在第二方面第一种可能的实现方式中,所述第二时间长度为1ms;所述第二搜索空间包括物理下行控制信道公共搜索空间PDCCH CSS和物理下行控制信道用户设备特定搜索空间PDCCH UESS。
结合第二方面第一种可能的实现方式,在第二方面第二种可能的实现方式中,所述第一类型DCI至少包括第一DCI,所述第二类型DCI至少包括第二DCI,所述第一DCI的信息比特数和所述第二DCI的信息比特数相同。
结合第二方面第二种可能的实现方式,在第二方面第三种可能的实现方式中,所述网络设备在所述至少一个搜索空间中发送至少一个DCI,包括:所述网络设备在所述第二搜索空间中至少发送格式为DCI format 1A的第二DCI。
结合第二方面或第二方面第一至三种可能的实现方式其中任意一种,在第二方面第四种可能的实现方式中,在所述网络设备确定第一搜索空间之后,还包括:所述网络设备发送高层信令,所述高层信令指示所述第一搜索空间的聚合级别和候选控制信道个数中的至少一个。
结合第二方面或第二方面第一至四种可能的实现方式其中任意一种,在第二方面第五种可能的实现方式中,所述第一搜索空间为PDCCH UESS中的一部分候选控制信道组成的搜索空间。
结合第二方面或第二方面第一至四种可能的实现方式其中任意一种,在第二方面第六种可能的实现方式中,所述第一搜索空间包括PDCCH UESS中的一部分候选控制信道组成的搜索空间和PDCCH CSS,所述第一类型DCI至少包括所述第一DCI和第三DCI,其中,所述第一DCI包含用于通知所述终端设备根据所述第三DCI进行具有所述第一时间长度的 数据传输的信息。
结合第二方面第六种可能的实现方式,在第二方面第七种可能的实现方式中,所述网络设备在所述至少一个搜索空间中发送至少一个DCI,包括:所述网络设备在所述PDCCH CSS中发送所述第三DCI;或者,所述网络设备在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中发送第一DCI;或者,所述网络设备在所述PDCCH CSS中发送所述第三DCI,且在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中发送第一DCI。
结合第二方面第五至七种可能的实现方式中任一种,在第二方面第八种可能的实现方式中,所述PDCCH UESS中的一部分候选控制信道组成的搜索空间至少包括:所述PDCCH UESS中的A个聚合级别为1的候选控制信道组成的搜索空间;或者,所述PDCCH UESS中的B个聚合级别为2的候选控制信道组成的搜索空间;或者,所述PDCCH UESS中的C个聚合级别为4的候选控制信道组成的搜索空间;或者,所述PDCCH UESS中的D个聚合级别为8的候选控制信道组成的搜索空间;其中,A为小于6的正整数,B为小于6的正整数,C为1或2,D为1或2。
第三方面,本申请还提供了一种终端设备,所述终端设备可以包括用于执行第一方面各种实现方式中方法步骤的单元模块,例如确定单元,检测单元等。其中,所述单元模块所要实现的功能可以由所述终端设备中的处理器实现,或者由所述处理器控制终端设备中的其他组件实现。
第四方面,本申请还提供了一种网络设备,所述网络设备可以包括用于执行第二方面各种实现方式中方法步骤的单元模块,例如处理单元,发送单元等。其中,所述单元模块所要实现的功能可以由所述网络设备中的处理器实现,或者由所述处理器控制网络设备中的其他组件实现。
第五方面,本申请还提供了一种存储介质,该计算机存储介质可存储有程序,该程序执行时可实现包括本申请提供的控制信息的检测方法各实施例中的部分或全部步骤;或者可实现包括本申请提供的控制信息的发送方法各实施例中的部分或全部步骤。
采用本申请各实施例所同的方法或设备,具有低时延需求的数据传输的搜索空间较小,盲检测次数少,进而可以快速获取到调度信息,加快数据的处理速度。
附图说明
为了更清楚地说明本申请的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,显而易见地,对于本领域普通技术人员而言,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本申请控制信息的检测方法一个实施例的流程示意图;
图2为本申请控制信息的发送方法一个实施例的流程示意图;
图3为本申请终端设备一个实施例的结构示意图;
图4为本申请网络设备一个实施例的结构示意图;
图5为本申请终端设备另一个实施例的结构示意图;
图6为本申请网络设备另一个实施例的结构示意图。
具体实施方式
本申请实施例可以应用于包括网络设备和终端设备(terminal device or terminal  equipment)的无线通信系统中。例如,LTE系统,或其他采用各种无线接入技术的无线通信系统,例如采用码分多址,频分多址,时分多址,正交频分多址,单载波频分多址等接入技术的系统,后续的演进系统,如第五代(5G)系统等。
具体地,本申请实施例可应用于终端设备与网络设备之间传输数据,终端设备与终端设备之间传输数据,或者,网络设备与网络设备之间传输数据。终端设备可以是指向用户提供语音或数据连通性的设备,具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(radio access network,RAN)与一个或多个核心网进行通信,无线终端可以是移动终端,如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机,例如,可以是便携式、袖珍式、手持式、计算机内置的或车载的移动装置,它们与无线接入网交换语言和或数据。例如,个人通信业务(personal communication service,PCS)电话、无绳电话、会话发起协议(session initiation protocol,SIP)话机、无线本地环路(wireless local loop,WLL)站、个人数字助理(personal digital assistant,PDA)等设备。无线终端也可以称为系统、订户单元(subscriber unit,SU)、订户站(subscriber station,SS),移动站(mobile station,MS)、远程站(remote station,RS)、接入点(access point,AP)、远端设备(remote terminal,RT)、接入终端(access terminal,AT)、用户终端(user terminal,UT)、用户代理(user agent,UA)、用户设备、或用户装备(user equipment,UE)。
本申请各个实施例所涉及的网络设备,可以是基站,或者接入点,或者可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换,作为无线终端与接入网的其余部分之间的路由器,其中接入网的其余部分可包括网际协议(Internet protocol,IP)网络。基站还可协调对空中接口的属性管理。例如,基站可以是5G基站(gNB,g-Node B),也可以是LTE中的演进型基站(NodeB或eNB或e-NodeB,evolutional Node B),甚至可以是GSM或CDMA中的基站(Base Transceiver Station,BTS)或WCDMA中的基站(NodeB),本申请并不限定。
为了便于对本申请的技术方案进行说明,下面首先对本申请所述涉及的一些概念进行说明。
在本申请各个实施例中,每个无线帧由10个1ms长度的子帧(subframe)组成,每个子帧包括2个时隙(slot)。对于普通循环前缀(normal cyclic prefix,normal CP),每个slot由7个符号(symbol)组成,即每个slot由序号为{#0,#1,#2,#3,#4,#5,#6}的符号组成;对于长CP(extended cyclic prefix,extended CP),每个slot由6个符号(symbol)组成,即每个slot由序号为{#0,#1,#2,#3,#4,#5}的符号组成。为便于描述,本申请各个实施例中,上行符号和下行符号都为符号。其中,上行符号可以被称为单载波频分多址(single carrier-frequency division multiple access,SC-FDMA)符号,下行符号则可以称为正交频分多址(orthogonal frequency division multiplexing,OFDM)符号。需要说明的是,无线通信系统采用正交频分多址(orthogonal frequency division multiple access,OFDMA)的上行多址方式,上行符号也可以称为其他类型符号,例如OFDM符号。本申请个实施例中对于上行多址方式和下行多址方式不做限制。
在本申请各个实施例中,DCI用于指示数据传输,或者说,DCI用于调度数据传输,例如,DCI可以用于调度物理上行共享信道(physical uplink shared channel,PUSCH) 传输或用于调度物理下行共享信道(physical downlink shared channel,PDSCH)传输。虽然DCI用于调度数据传输,但是DCI可以只用于指示数据传输的调度信息,而不用于触发数据传输。终端设备在进行数据传输之前,需要检测网络设备向终端设备发送的DCI。而承载DCI的下行控制信道为搜索空间中的一个候选下行控制信道,所以终端设备需要确定搜索空间。
在本申请各个实施例中,下行控制信道为用于承载DCI的信道,即DCI是承载在下行控制信道上的,或者说,DCI由下行控制信道承载。其中,下行控制信道可以由L个控制信道单元(control channel element,CCE)聚合而成,L为正整数,称为聚合级别(aggregation level,AL)。例如:对于PDCCH,L可以是1、2、4或8,即,下行控制信道的聚合级别为1、2、4或8。
在本申请各个实施例中,搜索空间由一个或多个候选下行控制信道组合而成,每个候选下行控制信道均能够用于承载DCI。简言之,搜索空间为候选下行控制信道的集合。终端设备需要监听候选下行控制信道,所以搜素空间也就是终端设备监听的候选下行控制信道集合。例如,搜索空间由一个或多个PDCCH组成,该搜索空间可以称为PDCCH搜索空间。例如,搜索空间由一个或多个EPDCCH组成,该搜索空间可以称为EPDCCH搜索空间。
所述搜索空间可以包括公共搜索空间(common search space,CSS)和用户设备特定搜索空间(UE specific search space,UESS)两种类型。其中,CSS是小区内多个终端设备都要监听的搜索空间,UESS是小区内特定终端设备需要监听的搜索空间。相应地,PDCCH UESS是由Rel-8定义的PDCCH组成的UESS,PDCCH CSS是由Rel-8定义的PDCCH组成的CSS,EPDCCH UESS是由Rel-11定义的EPDCCH组成的UESS。
参见图1,为控制信息检测方法一个实施例的流程示意图。本实施例所述的方法可以由终端设备执行。
步骤101:终端设备确定第一搜索空间和第二搜索空间,所述第一搜索空间为第二搜索空间的一部分。
其中,第一搜索空间用于传输至少一个第一类型DCI,所述第二搜索空间用于传输至少一个第二类型DCI。所述第一类型DCI用于调度具有第一时间长度的第一数据;所述第二类型DCI用于调度具有第二时间长度的第二数据,并且所述第一时间长度小于所述第二时间长度。所述第一数据可以是指第一下行数据或第一上行数据,所述第二数据为第二下行数据或第二上行数据。可选的,其中,所述第一下行数据或所述第二下行数据可以是承载于PDSCH的数据,所述第一上行数据或所述第二上行数据可以是承载于PUSCH的数据。
根据实际传输的数据业务的不同时延需求,所述第一时间长度与第二时间的长度的取值也可以各不相同。具体地,所述第一时间长度小于所述第二时间长度。可选的,所述第二时间长度为1ms,而所述第一时间长度为2个符号或3个符号;或者,所述第二时间长度为1ms,而所述第一时间长度为1个符号,2个符号或3个符号;或者,所述第二时间长度为1ms,而所述第一时间长度为1个符号或2个符号;或者,所述第二时间长度为1ms,而所述第一时间长度为4个符号;或者,所述第二时间长度为1ms,而所述第一时间长度为7个符号;或者,所述第二时间长度为1ms,而所述第一时间长度为6个符号。
需要说明的是,本申请各个实施例中,虽然第二时间长度为1ms,但是本申请各个实施例中所述的具有第一时间长度的数据传输的实际传输时间长度可以小于1ms。虽然LTE 系统里的各种物理信道都是按照1ms的TTI长度设计的,但是实际数据传输占用的时域资源可以小于1ms。例如,一个下行子帧中的前1、2、3或4个符号可以用于传输PDCCH,因此,TTI长度为1ms的下行数据传输(例如PDSCH传输)占用的时域资源可以小于1ms。又例如,一个上行子帧中的最后1个符号可以用于传输SRS(Sounding Reference Signal,信道探测参考信号),因此,TTI长度为1ms的上行数据传输(例如PUSCH传输)占用的时域资源也可以小于1ms。
可选的,所述第二搜索空间可以包括PDCCH CSS和PDCCH UESS。
其中,PDCCH CSS包括4个聚合级别为4的候选控制信道,2个聚合级别为8的候选控制信道。PDCCH CSS由PDCCH区域中的前16个控制信道单元(control channel element,CCE)组成。PDCCH UESS包括6个聚合级别为1的候选控制信道,6个聚合级别为2的候选控制信道,2个聚合级别为4的候选控制信道和2个聚合级别为8的候选控制信道。PDCCH UESS位于PDCCH区域,且在PDCCH区域中的起始位置根据终端设备特定的无线网络临时标识(radio network temporary identifiers,RNTI)确定。
当下行系统带宽大于10个资源块(resource block,RB)时,PDCCH区域为每个子帧的前1至3个OFDM符号。当下行系统带宽小于等于10个RB时,PDCCH区域为每个子帧的前2至4个符号。PDCCH区域的符号数可以通过物理控制格式指示信道(physical control format indicator channel,PCFICH)指示或高层信令指示。因为1ms数据传输对于时延的需求不高,所以采用和现有技术相同的搜索空间。相比现有技术,搜索用于调度1ms数据传输的PDCCH盲检测次数不变,因此对于1ms数据传输没有影响。
可选的,第一搜索空间也可以由所述PDCCH UESS中的一部分候选控制信道组成。
可选的,所述第一搜索空间可以由所述PDCCH CSS的全部和所述PDCCH UESS中的一部分候选控制信道组成。
可选的,所述第一搜索空间为所述PDCCH CSS。
所述PDCCH UESS中的一部分候选控制信道组成的搜索空间可以包括以下至少一个:所述PDCCH UESS中的A个聚合级别为1的候选控制信道组成的搜索空间;所述PDCCH UESS中的B个聚合级别为2的候选控制信道组成的搜索空间;所述PDCCH UESS中的C个聚合级别为4的候选控制信道组成的搜索空间;所述PDCCH UESS中的D个聚合级别为8的候选控制信道组成的搜索空间。
进一步的,所述PDCCH UESS中的一部分候选控制信道组成的搜索空间包括以下至少一个搜索空间:所述PDCCH UESS中的前A个聚合级别为1的候选控制信道组成的搜索空间;所述PDCCH UESS中的前B个聚合级别为2的候选控制信道组成的搜索空间;所述PDCCH UESS中的前C个聚合级别为4的候选控制信道组成的搜索空间;所述PDCCH UESS中的前D个聚合级别为8的候选控制信道组成的搜索空间。
其中,A为小于6的正整数,B为小于6的正整数,C为1或2,D为1或2。例如,A=2,B=2,C=2,D=2;或者,A=2,B=2,C=1,D=1;或者,A=3,B=3,C=2,D=2;或者,A=3,B=3,C=1,D=1。
可选的,所述第二搜索空间包括PDCCH CSS的全部和PDCCH UESS的一部分。其中,PDCCH UESS的一部分包括以下至少一个搜索空间:所述PDCCH UESS中的E个聚合级别为1的候选控制信道组成的搜索空间;所述PDCCH UESS中的F个聚合级别为2的候选控制信 道组成的搜索空间;所述PDCCH UESS中的G个聚合级别为4的候选控制信道组成的搜索空间;所述PDCCH UESS中的H个聚合级别为8的候选控制信道组成的搜索空间。其中,E为大于或等于A且小于6的正整数;F为大于或等于B且小于6的正整数;若C为1,G为1或2,若C为2,G为2;若D为1,H为1或2,若D为2,H为2。
终端设备可以根据高层信令的指示确定第一搜索空间和/或第二搜索空间。
可选的,所述终端设备确定第一搜索空间,包括:所述终端设备根据高层信令确定所述第一搜索空间,所述高层信令用于指示所述第一搜索空间的聚合级别和/或候选控制信道个数。例如,所述高层信令指示A,B,C和D中的至少一个。
可选的,所述终端设备确定第二搜索空间,包括:所述终端设备根据高层信令确定所述第二搜索空间,所述高层信令用于指示所述第二搜索空间的聚合级别和/或候选控制信道个数。例如,所述高层信令指示E,F,G和H中的至少一个。
步骤102:所述终端设备在所述第一搜索空间检测至少一个第一类型DCI;并在所述第二搜索空间中检测至少一个第二类型DCI。
在第一搜索空间确定之后,终端设备可以在第一搜索空间检测至少一个第一类型DCI。在第二搜索空间确定之后,终端设备可以在第二搜索空间检测至少一个第二类型DCI。其中,第一类型DCI与第二类型DCI均包括至少一个DCI。
可选的,所述第一类型DCI至少包括第一DCI,而所述至少一个第二类型DCI则包括第二DCI,所述第一DCI的信息比特数和所述第二DCI的信息比特数相同。也就是,第一DCI和第二DCI的负载大小(payload size)相同。例如,所述第二DCI为DCI format 1A。在此情况下,所述终端设备在所述第二搜索空间中检测至少一个第二类型DCI,则可以包括:所述终端设备在所述第二搜索空间中至少检测格式为DCI format 1A的第二DCI。
可选的,所述第一类型DCI至少包括第一DCI;而所述至少一个第二类型DCI则包括格式为DCI format 1C的DCI,格式为DCI format 1A的DCI,格式为DCI format 3/3A的DCI和第四DCI。其中,所述第一DCI的信息比特数和所述格式为DCI format 1A的DCI信息比特数相同。在此情况下,所述终端设备在所述第二搜索空间中检测至少一个第二类型DCI,则可以包括:所述终端设备在所述PDCCH CSS中检测DCI format 1C,DCI format1A和DCI format 3/3A;所述终端设备在所述PDCCH UESS或所述PDCCH UESS中的一部分搜索空间中检测DCI format 1A和第四DCI。所述第四DCI可以是DCI format1/1B/1C/1D/2/2A/2B/2C/2D/4/5/6。
因为第一搜索空间为第二搜索空间的一部分,且所述第一DCI的信息比特数和所述第二DCI(例如当第二DCI的格式为DCI format 1A时)的信息比特数相同,因此终端设备在进行DCI检测时,还需要区分第一DCI和第二DCI。
区分第一DCI和第二DCI的方法可以有多种:
例如,第一DCI和第二DCI都包含一个用于指示DCI类型的信息域。该信息域指示DCI为第一DCI或第二DCI。这样,终端设备就可以通过DCI的信息域来区分不同的DCI。
又如,使用不同的无线网络临时标识(radio network temporary identifiers,RNTI)对第一DCI和第二DCI进行加扰。这样,终端设备通过不同的RNTI就可以区分不同的DCI。
再如,可以采用不同的掩码(mask)对第一DCI和第二DCI的循环冗余码(cyclic redundancy code,CRC)进行加扰。这样,终端设备通过不同的掩码就可以区分不同的DCI。
可选的,所述第一类型DCI至少包括第一DCI和第三DCI,且第一DCI包含用于通知所述终端设备根据所述第三DCI进行具有所述第一时间长度的数据传输的信息。需要说明的是,第三DCI也可以称为slow DCI(慢DCI),第一DCI也可以称为fast DCI(快DCI)。可选的,所述第三DCI和DCI format 1A或DCI format 1C的信息比特数一样。
例如,第三DCI包括用于指示具有第一时间长度的数据传输占用的频域资源的信息,第一DCI指示所述终端设备在所述频域资源上进行具有所述第一时间长度的数据传输。
例如,第三DCI还包括sPDCCH(PDCCH for short TTI)配置信息,其中,sPDCCH承载的DCI调度的下行数据或上行数据的传输时间长度小于或等于0.5ms。sPDCCH配置信息指示PDCCH区域所在的时间单元(记为时间单元a)上是否存在sPDCCH区域,或者,sPDCCH配置信息指示PDCCH区域之后的第一个时间单元(记为时间单元b)上是否存在sPDCCH区域。sPDCCH配置信息指示存在sPDCCH区域时,终端设备还需要在时间单元a或b上的sPDCCH区域中检测第一DCI,否则不需要检测。sPDCCH区域和PDCCH区域在时域频域上都不重叠。一个下行子帧可以包括至少2个时间单元,每个时间单元由至少一个符号组成。例如,一个子帧包括14个符号,分成6个时间单元,分别包括3,2,2,2,2,3个符号,或者分别包括2,3,2,2,2,3个符号,或者分别包括2,2,3,2,2,3个符号。例如,一个子帧包括14个符号,平均分成2个时间单元。例如,PDCCH区域包括1个符号,且位于第一个时间单元,那么sPDCCH配置信息指示第一个时间单元上是否存在sPDCCH区域。例如,PDCCH区域包括2个符号,且位于第一个时间单元,那么sPDCCH配置信息指示PDCCH区域之后的第一个时间单元(即第二时间单元)上是否存在sPDCCH区域。该sPDCCH配置信息可以根据PDCCH区域的负载进行配置。如果PDCCH区域负载较大,那么sPDCCH配置信息可以指示时间单元a或b上存在sPDCCH区域,这样,第一DCI也可以通过sPDCCH区域中的sPDCCH承载;如果PDCCH区域负载较小,那么sPDCCH配置信息可以指示时间单元a或b上不存在sPDCCH区域,这样,第一DCI就只能通过PDCCH区域中的PDCCH承载,避免sPDCCH区域的额外开销。
例如,第三DCI还包括UL Grant(上行授权)配置信息。该UL Grant配置信息指示UL Grant对应的搜索空间。该UL Grant对应的搜索空间位于sPDCCH区域。这样,即使终端设备没有收到下行数据,也可以在UL Grant对应的搜索空间检测UL Grant,进而向网络设备发送上行数据。可选的,该UL Grant对应的搜索空间是配置给多个终端设备的,所述终端设备为该多个终端设备中的一个。
可选的,第三DCI是组特定的,即是配置给一组终端设备的,因此通过PDCCH CSS里面的候选控制信道承载。所述终端设备为所述一组终端设备中的一个。第一DCI是终端设备特定的,因此通过PDCCH UESS里面的候选控制信道承载。相对应的,所述第一搜索空间包括所述PDCCH CSS的全部和所述PDCCH UESS中的一部分候选控制信道组成的搜索空间。
当所述第一搜索空间如前述由所述PDCCH CSS的全部和所述PDCCH UESS中的一部分候选控制信道组成,且所述第一类型DCI包括所述第一DCI和所述第三DCI时,所述终端设备在所述第一搜索空间中检测至少一个第一类型DCI,包括:所述终端设备在所述PDCCH CSS中检测所述第三DCI;所述终端设备在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中检测第一DCI,或者,若所述终端设备检测到所述第三DCI,所述终端设备 在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中检测第一DCI。可选的,第三DCI包括sPDCCH配置信息,且若sPDCCH配置信息指示存在sPDCCH区域时,终端设备还需要确定第四搜索空间,并在第四搜索空间检测第一DCI,所述第四搜索空间位于时间单元a或b上的sPDCCH区域中。
可选的,所述至少一个第一类型DCI包括第三DCI。第三DCI是组特定的,因此通过PDCCH CSS里面的候选控制信道承载。另外,终端设备还要检测第一DCI,所述第一DCI是终端设备特定的,要么通过PDCCH UESS里面的候选控制信道承载,要么通过时间单元a或b上的sPDCCH区域中的sPDCCH承载。相对应的,终端设备确定所述第一搜索空间包括PDCCH CSS。所述终端设备在所述第一搜索空间中检测至少一个第一类型DCI,包括:所述终端设备在所述PDCCH CSS中检测所述第三DCI。在所述终端设备检测并接收到第三DCI之后,所述终端设备根据第三DCI包含的sPDCCH配置信息确定第三搜索空间,具体包括:若sPDCCH配置信息指示时间单元a或b上不存在sPDCCH区域,那么所述第三搜索空间包括所述PDCCH UESS中的一部分候选控制信道组成的搜索空间;若sPDCCH配置信息指示时间单元a或b上存在sPDCCH区域,那么所述第三搜索空间位于时间单元a或b上的sPDCCH区域。在确定第三搜索空间之后,终端设备还可以在所述第三搜索空间检测第一DCI。本段中所描述的第一DCI,第三DCI和sPDCCH配置信息可以参照上述定义。
需要说明的是,终端设备确定第一搜索空间和第二搜索空间没有严格的时序关系,可以先确定第一搜索空间再确定第二搜索空间,或者,先确定第二搜索空间再确定第一搜索空间,或者,同时确定第一搜索空间和第二搜索空间,本申请不作限制。
从上述实施例可以看出,具有低时延需求的数据传输的搜索空间较小,盲检测次数少,进而可以快速获取到调度信息,加快数据的处理速度。另外,PDCCH区域内要检测的候选控制信道个数没有增加,且检测的DCI的信息比特数的种类没有增加。因此,相比现有技术,PDCCH区域内的PDCCH盲检测次数没有增加,不会影响1ms数据传输的处理时间。
参见图2,为本申请控制信息发送方法一个实施例的流程示意图。该实施例中所述的方法可以由网络设备执行。如图2所示,该实施例可以包括如下步骤:
步骤201,网络设备确定第一搜索空间和第二搜索空间中的至少一个搜索空间,所述第一搜索空间为第二搜索空间的一部分。
其中,所述第一类型DCI用于调度具有第一时间长度的数据传输,所述第二类型DCI用于调度具有第二时间长度的数据传输,所述第一时间长度小于所述第二时间长度。
与第一搜索空间及第二搜索空间相关的详细内容可以参见前述实施例,在此就不再赘述。
步骤202,所述网络设备在所述至少一个搜索空间中发送至少一个下行控制信息DCI,所述至少一个DCI为第一类型DCI和第二类型DCI中的至少一个,其中,所述第一类型DCI由所述第一搜索空间承载,所述第二类型DCI由所述第二搜索空间承载。
可选的,所述至少一个搜索空间包括第一搜索空间。那么网络设备在确定第一搜索空间之后,所述网络设备可以在所述第一搜索空间发送至少一个第一类型DCI。
可选的,所述至少一个搜索空间包括第二搜索空间。那么网络设备在确定第二搜索空间之后,所述网络设备可以在所述第二搜索空间发送至少一个第二类型DCI。
可选的,所述至少一个搜索空间包括第一搜索空间和第二搜索空间。那么网络设备在 确定第一搜索空间和第二搜索空间之后,所述网络设备可以在所述第一搜索空间发送至少一个第一类型DCI,且在所述第二搜索空间发送至少一个第二类型DCI。
可选的,如果第二DCI的格式为DCI format 1A,那么所述网络设备在所述第二搜索空间中至少发送格式为DCI format 1A的第二DCI。
可选的,如果所述第一搜索空间包括所述PDCCH UESS中的一部分候选控制信道组成的搜索空间和所述PDCCH CSS,那么所述网络设备在所述PDCCH CSS中发送所述第三DCI;而在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中发送第一DCI。其中,所述网络设备可以仅在所述PDCCH CSS中发送所述第三DCI时,才在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中发送第一DCI。
为使终端设备能够确定所述第一搜索空间,所述网络设备在确定第一搜索空间后,可以发送高层信令,所述高层信令指示所述第一搜索空间的聚合级别或候选控制信道个数中的至少一个。即,所述高层信令可以指示所述第一搜索空间的聚合级别;或者,也可以指示候选控制信道个数;或者,也可以既指示所述第一搜索空间的聚合级别又指示候选控制信道个数。
在可选的,在另一种实现方式中,在确定第一搜索空间和第二搜索空间中的至少一个搜索空间后,所述网络设备也可以在所述第一搜索空间发送至少一个第一类型DCI或在所述第二搜索空间中发送至少一个第二类型DCI;或者,所述网络设备在所述第一搜索空间发送至少一个第一类型DCI并在所述第二搜索空间中发送至少一个第二类型DCI。例如,如果所述网络设备只确定第一搜索空间,那么可以只在所述第一搜索空间发送至少一个第一类型DCI;如果所述网络设备只确定第二搜索空间,那么可以只在所述第一搜索空间发送至少一个第一类型DCI;如果所述网络设备既确定第一搜索空间又确定第二搜索空间,那么可以只在所述第一搜索空间发送至少一个第一类型DCI;或者,也可以只在所述第二搜索空间中发送至少一个第二类型DCI;或者,也可以既在所述第一搜索空间发送至少一个第一类型DCI又在所述第二搜索空间中发送至少一个第二类型DCI。
在此需要说明的是,所述第一搜索空间,所述第二搜索空间,第一时间长度,第二时间长度,第一类型DCI,及第二类型DCI的相关内容在本实施例中的描述都较为简略,相关之处参见前述实施例即可,在此就不再赘述。
参见图3,为申请终端设备一个实施例的结构示意图。所述终端设备可以用于执行图1所对应的控制信息的检测方法。如图3所示,所述终端设备可以包括:确定单元301及检测单元302。其中,所述确定单元301及所述检测单元302都可以由所述终端设备中的处理器实现。
其中,确定单元301,用于确定第一搜索空间和第二搜索空间,所述第一搜索空间为第二搜索空间的一部分;检测单元302,用于在所述第一搜索空间检测至少一个第一类型DCI;在所述第二搜索空间中检测至少一个第二类型DCI;其中,所述第一类型DCI用于调度具有第一时间长度的数据传输,所述第二类型DCI用于调度具有第二时间长度的数据传输,所述第一时间长度小于所述第二时间长度。
可选的,所述第二时间长度为1ms,所述第二搜索空间包括PDCCH CSS和PDCCH UESS。
可选的,所述第一类型DCI至少包括第一DCI,所述第二类型DCI至少包括第二DCI,所述第一DCI的信息比特数和所述第二DCI的信息比特数相同。
可选的,所述检测单元302,还用于在所述第二搜索空间中至少检测格式为DCI format1A的第二DCI。
可选的,所述确定单元301,具体用于根据高层信令确定所述第一搜索空间,所述高层信令指示所述第一搜索空间的聚合级别和候选控制信道个数中的至少一个。
可选的,所述第一搜索空间为所述PDCCH UESS中的一部分候选控制信道组成的搜索空间。
可选的,所述第一搜索空间包括由所述PDCCH UESS中的一部分候选控制信道组成的搜索空间和PDCCH CSS;所述第一类型DCI至少包括所述第一DCI和第三DCI,其中,所述第一DCI包含用于通知所述终端设备根据所述第三DCI进行具有所述第一时间长度的数据传输的信息。
可选的,所述检测单元302,还用于在所述PDCCH CSS中检测所述第三DCI;在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中检测第一DCI;或者,若检测到所述第三DCI,所述终端设备在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中检测第一DCI。
可选的,所述PDCCH UESS中的一部分候选控制信道组成的搜索空间包括以下至少一个搜索空间:所述PDCCH UESS中的A个聚合级别为1的候选控制信道组成的搜索空间;所述PDCCH UESS中的B个聚合级别为2的候选控制信道组成的搜索空间;所述PDCCH UESS中的C个聚合级别为4的候选控制信道组成的搜索空间;所述PDCCH UESS中的D个聚合级别为8的候选控制信道组成的搜索空间;其中,A为小于6的正整数,B为小于6的正整数,C为1或2,D为1或2。
可选的,所述第一搜索空间为PDCCH CSS,所述检测单元302,还用于在所述PDCCH CSS中检测所述第三DCI。相应的,确定单元301,还用于根据第三DCI中的sPDCCH配置信息确定第三搜索空间。若sPDCCH配置信息指示时间单元a或b上不存在sPDCCH区域,那么所述第三搜索空间包括所述PDCCH UESS中的一部分候选控制信道组成的搜索空间;若sPDCCH配置信息指示时间单元a或b上存在sPDCCH区域,那么所述第三搜索空间位于时间单元a或b上的sPDCCH区域。相应地,检测单元302,还用于在第三搜索空间检测第一DCI。具体见上述实施例描述,在此不再赘述。
参见图4,为本申请网络设备一个实施例的结构示意图。所述网络设备可以用于执行图2所对应的为控制信息的发送方法。如图4所示,所述网络设备可以包括:处理单元401以及发送单元402。
处理单元401,用于确定第一搜索空间和第二搜索空间中的至少一个,其中,所述第一搜索空间为第二搜索空间的一部分;发送单元402,用于在所述至少一个搜索空间中发送至少一个下行控制信息DCI,所述至少一个DCI为第一类型DCI和第二类型DCI中的至少一个,其中,所述第一类型DCI由所述第一搜索空间承载,所述第二类型DCI由所述第二搜索空间承载;其中,所述第一类型DCI用于调度具有第一时间长度的数据传输,所述第二类型DCI用于调度具有第二时间长度的数据传输,所述第一时间长度小于所述第二时间长度。
可选的,所述第二时间长度为1ms;所述第二搜索空间包括物理下行控制信道公共搜索空间PDCCH CSS和物理下行控制信道用户设备特定搜索空间PDCCH UESS。
可选的,所述第一类型DCI至少包括第一DCI,所述第二类型DCI至少包括第二DCI,所述第一DCI的信息比特数和所述第二DCI的信息比特数相同。
可选的,所述发送单元402,还用于在所述第二搜索空间中至少发送格式为DCI format1A的第二DCI。
可选的,所述发送单元402,还用于发送高层信令,所述高层信令指示所述第一搜索空间的聚合级别和候选控制信道个数中的至少一个。
可选的,所述第一搜索空间为PDCCH UESS中的一部分候选控制信道组成的搜索空间。
可选的,所述第一搜索空间包括PDCCH UESS中的一部分候选控制信道组成的搜索空间和PDCCH CSS,所述第一类型DCI至少包括所述第一DCI和第三DCI,其中,所述第一DCI包含用于通知所述终端设备根据所述第三DCI进行具有所述第一时间长度的数据传输的信息。
可选的,所述发送单元402,还用于在所述PDCCH CSS中发送所述第三DCI;或者,在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中发送第一DCI;或者,在所述PDCCH CSS中发送所述第三DCI,且在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中发送第一DCI。
可选的,所述PDCCH UESS中的一部分候选控制信道组成的搜索空间至少包括:所述PDCCH UESS中的A个聚合级别为1的候选控制信道组成的搜索空间;或者,所述PDCCH UESS中的B个聚合级别为2的候选控制信道组成的搜索空间;或者,所述PDCCH UESS中的C个聚合级别为4的候选控制信道组成的搜索空间;或者,所述PDCCH UESS中的D个聚合级别为8的候选控制信道组成的搜索空间;其中,A为小于6的正整数,B为小于6的正整数,C为1或2,D为1或2。
参见图5,为本申请终端设备另一个实施例的结构示意图。
参见图5为本申请终端设备一个实施例的结构示意图。所述终端设备可以是前述任意实施例中的终端设备,可以用于执行图1所示控制信息的检测方法中的方法步骤。
如图5所示,所述终端设备可以包括处理器501、存储器502及收发器503,所述收发器503可以包括接收机5031、发射机5032与天线5033等部件。所述终端设备还可以包括更多或更少的部件,或者组合某些部件,或者不同的部件布置,本申请对此不进行限定。
处理器501为终端设备的控制中心,利用各种接口和线路连接整个终端设备的各个部分,通过运行或执行存储在存储器502内的软件程序和/或模块,以及调用存储在存储器内的数据,以执行终端设备的各种功能和/或处理数据。所述处理器501可以由集成电路(integrated circuit,IC)组成,例如可以由单颗封装的IC所组成,也可以由连接多颗相同功能或不同功能的封装IC而组成。举例来说,处理器可以仅包括中央处理器(central processing unit,CPU),也可以是GPU、数字信号处理器(digital signal processor,DSP)、及收发器503中的控制芯片(例如基带芯片)的组合。在本申请实施方式中,CPU可以是单运算核心,也可以包括多运算核心。
所述收发器503用于建立通信信道,使终端设备通过所述通信信道以连接至接收设备,从而实现终端设备之间的数据传输。所述收发器503可以包括无线局域网(wireless local area network,WLAN)模块、蓝牙模块、基带(base band)模块等通信模块,以及所述通信模块对应的射频(radio frequency,RF)电路,用于进行无线局域网络通信、蓝牙 通信、红外线通信及/或蜂窝式通信系统通信,例如宽带码分多重接入(wideband code division multiple access,WCDMA)及/或高速下行封包存取(high speed downlink packet access,HSDPA)。所述收发器503用于控制终端设备中的各组件的通信,并且可以支持直接内存存取(direct memory access)。
在本申请的不同实施方式中,所述收发器503中的各种收发器503一般以集成电路芯片(integrated circuit chip)的形式出现,并可进行选择性组合,而不必包括所有收发器503及对应的天线组。例如,所述收发器503可以仅包括基带芯片、射频芯片以及相应的天线以在一个蜂窝通信系统中提供通信功能。经由所述收发器503建立的无线通信连接,例如无线局域网接入或WCDMA接入,所述终端设备可以连接至蜂窝网(cellular network)或因特网(internet)。在本申请的一些可选实施方式中,所述收发器503中的通信模块,例如基带模块可以集成到处理器中,典型的如高通(Qualcomm)公司提供的APQ+MDM系列平台。射频电路用于信息收发或通话过程中接收和发送信号。例如,将网络设备的下行信息接收后,给处理器处理;另外,将设计上行的数据发送给网络设备。通常,所述射频电路包括用于执行这些功能的公知电路,包括但不限于天线系统、射频收发机、一个或多个放大器、调谐器、一个或多个振荡器、数字信号处理器、编解码(codec)芯片组、用户身份模块(SIM)卡、存储器等等。此外,射频电路还可以通过无线通信与网络和其他设备通信。所述无线通信可以使用任一通信标准或协议,包括但不限于全球移动通讯系统(global system of mobile communication,GSM)、通用分组无线服务(general packet radio service,gprs)、码分多址(code division multiple access,CDMA)、宽带码分多址(wideband code division multiple access,WCDMA)、高速上行行链路分组接入技术(high speed uplink packet access,HSUPA)、长期演进(long term evolution,LTE)、电子邮件、短消息服务(short messaging service,SMS)等。
在本申请实施例中,终端设备可以用于实现前述实施例中控制信息的检测方法中所包含的各个方法步骤。所述确定单元301所要实现的功能则可以由所述处理器501实现,在硬件可以表现为所述处理器501。所述检测单元302发送单元所要实现的功能也可以由所述终端设备的处理器501实现,或者也可以由处理器501控制的所述收发器503实现,在硬件上可以表现为所述处理器501,或者表现为所述处理器501与所述收发器503的组合。
参见图6,为本申请网络设备另一个实施例的结构示意图。本实施例中的网络设备可以用于执行图1所示控制信息的发送方法中的方法步骤。图如6所示,所述网络设备可以由处理器601、存储器602及收发器603等组成。
处理器601为网络设备的控制中心,利用各种接口和线路连接整个网络设备的各个部分,通过运行或执行存储在存储器内的软件程序和/或模块,以及调用存储在存储器内的数据,以执行网络设备的各种功能和/或处理数据。所述处理器可以是中央处理器(central processing unit,CPU),网络处理器(network processor,NP)或者CPU和NP的组合。处理器还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit,ASIC),可编程逻辑器件(programmable logic device,PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device,CPLD),现场可编程逻辑门阵列(field-programmable gate array,FPGA),通用阵列逻辑(generic array logic,GAL)或其任意组合。
所述存储器602可以包括易失性存储器(volatile memory),例如随机存取内存(random access memory,RAM);还可以包括非易失性存储器(non-volatile memory),例如快闪存储器(flash memory),硬盘(hard disk drive,HDD)或固态硬盘(solid-state drive,SSD);存储器还可以包括上述种类的存储器的组合。所述存储器中可以存储有程序或代码,网元中的处理器通过执行所述程序或代码可以实现所述网元的功能。
在本申请实施例中,网络设备可以用于实现前述实施例中控制信息的发送方法中所包含的各个方法步骤。其中,所述处理单元401所要实现的功能则可以由所述处理器601实现,在硬件上可以表现为所述处理器601。所述检测单元302发送单元所要实现的功能也可以由所述终端设备的处理器601实现,或者也可以由处理器601控制的所述收发器603实现,在硬件上可以表现为所述处理器601,或者表现为所述处理器601与所述收发器603的组合。
具体实现中,本申请还提供一种计算机存储介质,其中,该计算机存储介质可存储有程序,该程序执行时可包括本申请提供的控制信息的检测方法或控制信息的发送方法的各实施例中的部分或全部步骤。所述的存储介质可为磁碟、光盘、只读存储记忆体(read-only memory,ROM)或随机存储记忆体(random access memory,RAM)等。
本领域的技术人员可以清楚地了解到本申请实施例中的技术可借助软件加必需的通用硬件平台的方式来实现。基于这样的理解,本申请实施例中的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品可以存储在存储介质中,如ROM/RAM、磁碟、光盘等,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)执行本申请各个实施例或者实施例的某些部分所述的方法。
本说明书中各个实施例之间相同相似的部分互相参见即可。尤其,对于设备实施例而言,由于其基本相似于方法实施例,所以描述的比较简单,相关之处参见方法实施例中的说明即可。
在此需要说明的是,本申请各个实施例均以LTE系统为例进行介绍,但这并不意味着本申请实施例仅适用于LTE系统,实际上,任何通过调度进行数据传输的无线通信系统都可以采用本申请实施例提供的方案。以上所述的本申请实施方式并不构成对本申请保护范围的限定。

Claims (39)

  1. 一种控制信息的检测方法,其特征在于,包括:
    终端设备确定第一搜索空间和第二搜索空间,所述第一搜索空间为第二搜索空间的一部分;
    所述终端设备在所述第一搜索空间检测至少一个第一类型下行控制信息DCI;
    所述终端设备在所述第二搜索空间中检测至少一个第二类型DCI;
    其中,所述第一类型DCI用于调度具有第一时间长度的数据传输,所述第二类型DCI用于调度具有第二时间长度的数据传输,所述第一时间长度小于所述第二时间长度。
  2. 如权利要求1所述的方法,其特征在于,
    所述第二时间长度为1ms,
    所述第二搜索空间包括物理下行控制信道公共搜索空间PDCCH CSS和物理下行控制信道用户设备特定搜索空间PDCCH UESS。
  3. 如权利要求2所述的方法,其特征在于,
    所述第一类型DCI至少包括第一DCI,
    所述第二类型DCI至少包括第二DCI,
    所述第一DCI的信息比特数和所述第二DCI的信息比特数相同。
  4. 如权利要求3所述的方法,其特征在于,
    所述终端设备在所述第二搜索空间中检测至少一个第二类型DCI,包括:
    所述终端设备在所述第二搜索空间中至少检测格式为DCI format 1A的第二DCI。
  5. 如权利要求1至4中任一所述的方法,其特征在于,所述终端设备确定第一搜索空间,包括:
    所述终端设备根据高层信令确定所述第一搜索空间,所述高层信令指示所述第一搜索空间的聚合级别和候选控制信道个数中的至少一个。
  6. 如权利要求1至5任一所述的方法,其特征在于,
    所述第一搜索空间为PDCCH UESS中的一部分候选控制信道组成的搜索空间。
  7. 如权利要求1至5任一所述的方法,其特征在于,
    所述第一搜索空间包括由PDCCH UESS中的一部分候选控制信道组成的搜索空间和PDCCH CSS;
    所述第一类型DCI至少包括所述第一DCI和第三DCI,
    其中,所述第一DCI包含用于通知所述终端设备根据所述第三DCI进行具有所述第一时间长度的数据传输的信息。
  8. 如权利要求7所述的方法,其特征在于,所述终端设备在所述第一搜索空间中检测至少一个第一类型DCI,包括:
    所述终端设备在所述PDCCH CSS中检测所述第三DCI;
    所述终端设备在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中检测第一DCI;或者,
    若所述终端设备检测到所述第三DCI,所述终端设备在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中检测第一DCI。
  9. 如权利要求6,7或8所述的方法,其特征在于,所述PDCCH UESS中的一部分候选控制信道组成的搜索空间包括以下至少一个搜索空间:
    所述PDCCH UESS中的A个聚合级别为1的候选控制信道组成的搜索空间;
    所述PDCCH UESS中的B个聚合级别为2的候选控制信道组成的搜索空间;
    所述PDCCH UESS中的C个聚合级别为4的候选控制信道组成的搜索空间;
    所述PDCCH UESS中的D个聚合级别为8的候选控制信道组成的搜索空间;
    其中,A为小于6的正整数,B为小于6的正整数,C为1或2,D为1或2。
  10. 一种控制信息的发送方法,其特征在于,包括:
    网络设备确定第一搜索空间和第二搜索空间中的至少一个,其中,所述第一搜索空间为第二搜索空间的一部分;
    所述网络设备在所述至少一个搜索空间中发送至少一个下行控制信息DCI,所述至少一个DCI为第一类型DCI和第二类型DCI中的至少一个,其中,所述第一类型DCI由所述第一搜索空间承载,所述第二类型DCI由所述第二搜索空间承载;
    其中,所述第一类型DCI用于调度具有第一时间长度的数据传输,所述第二类型DCI用于调度具有第二时间长度的数据传输,所述第一时间长度小于所述第二时间长度。
  11. 如权利要求10所述的方法,其特征在于,
    所述第二时间长度为1ms;
    所述第二搜索空间包括物理下行控制信道公共搜索空间PDCCH CSS和物理下行控制信道用户设备特定搜索空间PDCCH UESS。
  12. 如权利要求11所述的方法,其特征在于,
    所述第一类型DCI至少包括第一DCI,
    所述第二类型DCI至少包括第二DCI,
    所述第一DCI的信息比特数和所述第二DCI的信息比特数相同。
  13. 如权利要求12所述的方法,其特征在于,所述网络设备在所述至少一个搜索空间中发送至少一个DCI,包括:
    所述网络设备在所述第二搜索空间中至少发送格式为DCI format 1A的第二DCI。
  14. 如权利要求10至13中任一所述的方法,其特征在于,在所述网络设备确定第一搜索空间之后,还包括:
    所述网络设备发送高层信令,所述高层信令指示所述第一搜索空间的聚合级别和候选控制信道个数中的至少一个。
  15. 如权利要求10至14任一所述的方法,其特征在于,
    所述第一搜索空间为PDCCH UESS中的一部分候选控制信道组成的搜索空间。
  16. 如权利要求10至14任一所述的方法,其特征在于,
    所述第一搜索空间包括PDCCH UESS中的一部分候选控制信道组成的搜索空间和PDCCH CSS,
    所述第一类型DCI至少包括所述第一DCI和第三DCI,
    其中,所述第一DCI包含用于通知所述终端设备根据所述第三DCI进行具有所述第一时间长度的数据传输的信息。
  17. 如权利要求16所述的方法,其特征在于,所述网络设备在所述至少一个搜索空间中发送至少一个DCI,包括:
    所述网络设备在所述PDCCH CSS中发送所述第三DCI;或者,
    所述网络设备在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中发送第一DCI;或者,
    所述网络设备在所述PDCCH CSS中发送所述第三DCI,且在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中发送第一DCI。
  18. 如权利要求15,16或17所述的方法,其特征在于,所述PDCCH UESS中的一部分候选控制信道组成的搜索空间至少包括:
    所述PDCCH UESS中的A个聚合级别为1的候选控制信道组成的搜索空间;或者,
    所述PDCCH UESS中的B个聚合级别为2的候选控制信道组成的搜索空间;或者,
    所述PDCCH UESS中的C个聚合级别为4的候选控制信道组成的搜索空间;或者,
    所述PDCCH UESS中的D个聚合级别为8的候选控制信道组成的搜索空间;
    其中,A为小于6的正整数,B为小于6的正整数,C为1或2,D为1或2。
  19. 一种终端设备,其特征在于,包括:
    确定单元,用于确定第一搜索空间和第二搜索空间,所述第一搜索空间为第二搜索空间的一部分;
    检测单元,用于在所述第一搜索空间检测至少一个第一类型DCI;在所述第二搜索空间中检测至少一个第二类型DCI;其中,所述第一类型DCI用于调度具有第一时间长度的数据传输,所述第二类型DCI用于调度具有第二时间长度的数据传输,所述第一时间长度小于所述第二时间长度。
  20. 如权利要求19所述的终端设备,其特征在于,
    所述第二时间长度为1ms,
    所述第二搜索空间包括PDCCH CSS和PDCCH UESS。
  21. 如权利要求20所述的终端设备,其特征在于,
    所述第一类型DCI至少包括第一DCI,
    所述第二类型DCI至少包括第二DCI,
    所述第一DCI的信息比特数和所述第二DCI的信息比特数相同。
  22. 如权利要求21所述的终端设备,其特征在于,
    所述检测单元,还用于在所述第二搜索空间中至少检测格式为DCI format 1A的第二DCI。
  23. 如权利要求19至22中任一项所述的终端设备,其特征在于,
    所述确定单元,具体用于根据高层信令确定所述第一搜索空间,所述高层信令指示所述第一搜索空间的聚合级别和候选控制信道个数中的至少一个。
  24. 如权利要求19至23中任一项所述的终端设备,其特征在于,
    所述第一搜索空间为PDCCH UESS中的一部分候选控制信道组成的搜索空间。
  25. 如权利要求19至23中任一项所述的终端设备,其特征在于,
    所述第一搜索空间包括由PDCCH UESS中的一部分候选控制信道组成的搜索空间和PDCCH CSS;
    所述第一类型DCI至少包括所述第一DCI和第三DCI,
    其中,所述第一DCI包含用于通知所述终端设备根据所述第三DCI进行具有所述第一时间长度的数据传输的信息。
  26. 如权利要求25所述的终端设备,其特征在于,
    所述检测单元,还用于在所述PDCCH CSS中检测所述第三DCI;在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中检测第一DCI;或者,若检测到所述第三DCI,所述终端设备在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中检测第一DCI。
  27. 如权利要求24至26中任一项所述的终端设备,其特征在于,
    所述PDCCH UESS中的一部分候选控制信道组成的搜索空间包括以下至少一个搜索空间:
    所述PDCCH UESS中的A个聚合级别为1的候选控制信道组成的搜索空间;
    所述PDCCH UESS中的B个聚合级别为2的候选控制信道组成的搜索空间;
    所述PDCCH UESS中的C个聚合级别为4的候选控制信道组成的搜索空间;
    所述PDCCH UESS中的D个聚合级别为8的候选控制信道组成的搜索空间;
    其中,A为小于6的正整数,B为小于6的正整数,C为1或2,D为1或2。
  28. 一种网络设备,其特征在于,包括:
    处理单元,用于确定第一搜索空间和第二搜索空间中的至少一个,其中,所述第一搜索空间为第二搜索空间的一部分;
    发送单元,用于在所述至少一个搜索空间中发送至少一个下行控制信息DCI,所述至少一个DCI为第一类型DCI和第二类型DCI中的至少一个,其中,所述第一类型DCI由所述第一搜索空间承载,所述第二类型DCI由所述第二搜索空间承载;
    其中,所述第一类型DCI用于调度具有第一时间长度的数据传输,所述第二类型DCI用于调度具有第二时间长度的数据传输,所述第一时间长度小于所述第二时间长度。
  29. 如权利要求28所述的网络设备,其特征在于,
    所述第二时间长度为1ms;
    所述第二搜索空间包括物理下行控制信道公共搜索空间PDCCH CSS和物理下行控制信道用户设备特定搜索空间PDCCH UESS。
  30. 如权利要求29所述的网络设备,其特征在于,
    所述第一类型DCI至少包括第一DCI,
    所述第二类型DCI至少包括第二DCI,
    所述第一DCI的信息比特数和所述第二DCI的信息比特数相同。
  31. 如权利要求30所述的网络设备,其特征在于,
    所述发送单元,还用于在所述第二搜索空间中至少发送格式为DCI format 1A的第二DCI。
  32. 如权利要求28至31中任一项所述的网络设备,其特征在于,
    所述发送单元,还用于发送高层信令,所述高层信令指示所述第一搜索空间的聚合级别和候选控制信道个数中的至少一个。
  33. 如权利要求28至32中任一项所述的网络设备,其特征在于,
    所述第一搜索空间为PDCCH UESS中的一部分候选控制信道组成的搜索空间。
  34. 如权利要求28至32中任一项所述的网络设备,其特征在于,
    所述第一搜索空间包括PDCCH UESS中的一部分候选控制信道组成的搜索空间和PDCCH CSS,
    所述第一类型DCI至少包括所述第一DCI和第三DCI,
    其中,所述第一DCI包含用于通知所述终端设备根据所述第三DCI进行具有所述第一时间长度的数据传输的信息。
  35. 如权利要求34所述无线通信设备,其特征在于,
    所述发送单元,还用于在所述PDCCH CSS中发送所述第三DCI;或者,在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中发送第一DCI;或者,在所述PDCCH CSS中发送所述第三DCI,且在所述PDCCH UESS中的一部分候选控制信道组成的搜索空间中发送第一DCI。
  36. 如权利要求33至35中任一项所述的网络设备,其特征在于,所述PDCCH UESS中的一部分候选控制信道组成的搜索空间至少包括:
    所述PDCCH UESS中的A个聚合级别为1的候选控制信道组成的搜索空间;或者,
    所述PDCCH UESS中的B个聚合级别为2的候选控制信道组成的搜索空间;或者,
    所述PDCCH UESS中的C个聚合级别为4的候选控制信道组成的搜索空间;或者,
    所述PDCCH UESS中的D个聚合级别为8的候选控制信道组成的搜索空间;
    其中,A为小于6的正整数,B为小于6的正整数,C为1或2,D为1或2。
  37. 一种计算机可读存储介质,其特征在于,包括指令,当其在计算机上运行时,使得计算机执行如权利要求1至9中任一项所述的方法,或,使得计算机执行如权利要求10至18中任一项所述的方法。
  38. 一种计算机程序产品,其特征在于,当其在计算机上运行时,使得计算机执行如权利要求1至9中任一项所述的方法,或,使得计算机执行如权利要求10至18中任一项所述的方法。
  39. 一种通信设备,其特征在于,包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,其特征在于,所述处理器执行所述程序时,实现如权利要求1至9中任一项所述的方法,或实现如权利要求10至18中任一项所述的方法。
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JP2020501411A (ja) 2020-01-16

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