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 PDFInfo
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- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/08—Upper layer protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-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
Description
Claims (39)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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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EP3800960A4 (en) | 2018-06-29 | 2021-08-11 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | PDCCH AND ASSOCIATED DEVICE CONFIGURATION PROCESS |
PT3793285T (pt) | 2018-07-25 | 2023-09-19 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Método e aparelho de monitorização de canal, dispositivo terminal e dispositivo de rede |
CN110839291B (zh) * | 2018-08-19 | 2024-02-02 | 华为技术有限公司 | 传输下行控制信息的方法和装置 |
WO2020061722A1 (en) * | 2018-09-24 | 2020-04-02 | Qualcomm Incorporated | Control information repetition signaling design |
CN111163527B (zh) * | 2018-11-08 | 2021-09-28 | 北京小米松果电子有限公司 | 信息发送方法、装置、基站及存储介质 |
CN111756503B (zh) * | 2019-03-29 | 2023-04-18 | 华为技术有限公司 | 一种信号检测方法及设备 |
CN111278092B (zh) * | 2019-04-26 | 2021-06-08 | 维沃移动通信有限公司 | 一种信道监听方法、终端及网络设备 |
CN112399618B (zh) * | 2019-08-16 | 2023-06-06 | 华为技术有限公司 | 通信方法和装置 |
US11838917B2 (en) * | 2020-04-23 | 2023-12-05 | Qualcomm Incorporated | Cross-carrier downlink control information scheduling |
CN115767747A (zh) * | 2021-09-02 | 2023-03-07 | 华为技术有限公司 | 资源指示方法和通信装置 |
CN116527204B (zh) * | 2023-06-28 | 2023-10-17 | 新华三技术有限公司 | 下行控制信息传输方法及装置、电子设备 |
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