CN109286983B - Method and device for determining search space - Google Patents
Method and device for determining search space Download PDFInfo
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- CN109286983B CN109286983B CN201710600450.8A CN201710600450A CN109286983B CN 109286983 B CN109286983 B CN 109286983B CN 201710600450 A CN201710600450 A CN 201710600450A CN 109286983 B CN109286983 B CN 109286983B
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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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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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
- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The embodiment of the invention provides a method and a device for determining a search space, wherein the method comprises the following steps: acquiring capability level information of a user terminal, wherein the capability level information is used for indicating a subband value M which can be supported by the user terminal, and M is an integer greater than or equal to 1; and determining the search space of the user terminal according to the subband value M and the working state of the user terminal. The device comprises: an acquiring unit, configured to acquire capability level information of a user terminal, where the capability level information is used to indicate a subband value M that can be supported by the user terminal, and M is an integer greater than or equal to 1; and the determining unit is used for determining the search space of the user terminal according to the subband value M and the working state of the user terminal. The method and the device provided by the embodiment of the invention have the advantages that the search space is flexible and variable, and the bandwidth capability of the terminal is adapted.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a method and a device for determining a search space.
Background
In a broadband access system (abbreviated as a system) based on the TD-LTE technology, the available bandwidth of the system is divided into a plurality of continuous or discontinuous sub-bands, and each sub-band is transmitted by adopting an Orthogonal Frequency Division Multiplexing (OFDM) technology. One typical application scenario is a wireless broadband access network of an electric power system, abbreviated as TD-LTE230 network, whose spectrum is discretely distributed in 230M frequency band, and whose bandwidth is 8.15MHz. Fig. 4 is a schematic diagram of a 230MHz frequency band frequency resource distribution of an electric power system, as shown in fig. 4, there are 40 sub-bands of 25kHz in total, the sub-band of the lowest frequency point is 223.525MHz, and the sub-band of the highest frequency point is 231.65MHz.
In a broadband access system based on the TD-LTE technology, PDCCH (physical downlink control channel) is a core of system resource allocation and control information scheduling and is used for bearing downlink control information (Downlink Control Information, DCI), wherein the downlink control information comprises information such as downlink scheduling allocation, uplink scheduling authorization and the like.
However, it is troublesome for the UE (user terminal) to receive DCI information transmitted by PDCCH, because the UE does not know what information is currently transmitted by PDCCH and does not know where information is needed by itself, and thus it is necessary to take a blind detection. The blind detection means that for different expected information, the UE uses the corresponding X-RNTI to sum CCE (minimum unit of resource occupied by PDCCH) information to make CRC check, if the CRC check is successful, the UE knows that the information is needed by itself and also knows the corresponding DCI format, so as to further solve the DCI content. This is the so-called "blind detection" procedure.
The Search Space (SS) is formed by several sets of candidate control channels (PDCCH candidate), and the UE listens to the Search Space and performs blind detection in the Search Space so as to detect the downlink control channel related to itself. There are two types of search spaces: one is the common search space (UE-common Search Space), i.e. the search space on which all UEs are listening, bearing common information related to system information (SI, system information), random Access (RA) responses and Paging; another is UE-specific search space (UE-specific Search Space), where the UE's own uplink and downlink scheduling grant information is carried.
In the prior art, the search space is designed by distributing the search space in the whole bandwidth range of the system, so that the UE is required to have the capability of monitoring the whole bandwidth, and the UE is not supported to only work in a single sub-band or a part of continuous sub-bands, thereby improving the cost of the UE.
Disclosure of Invention
In order to solve the problem that the existing search space does not support user terminals only working in a single sub-band or a part of continuous sub-bands, the embodiment of the invention provides a method and a device for determining the search space.
In a first aspect, an embodiment of the present invention provides a method for determining a search space, where the method includes:
acquiring capability level information of a user terminal, wherein the capability level information is used for indicating a sub-band value M which can be supported by the user terminal, and M is an integer greater than or equal to 1;
and determining the search space of the user terminal according to the subband value M and the working state of the user terminal.
In a second aspect, an embodiment of the present invention further provides an apparatus for determining a search space, where the apparatus includes:
an obtaining unit, configured to obtain capability level information of a user terminal, where the capability level information is used to indicate a subband value M that can be supported by the user terminal, where M is an integer greater than or equal to 1;
and the determining unit is used for determining the search space of the user terminal according to the subband value M and the working state of the user terminal.
In a third aspect, an embodiment of the present invention provides an electronic device, including: the device comprises a memory and a processor, wherein the processor and the memory are communicated with each other through a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions capable of performing the method of: acquiring capability level information of a user terminal, wherein the capability level information is used for indicating a sub-band value M which can be supported by the user terminal, and M is an integer greater than or equal to 1; and determining the search space of the user terminal according to the subband value M and the working state of the user terminal.
In a fourth aspect, embodiments of the present invention provide a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the following method: acquiring capability level information of a user terminal, wherein the capability level information is used for indicating a sub-band value M which can be supported by the user terminal, and M is an integer greater than or equal to 1; and determining the search space of the user terminal according to the subband value M and the working state of the user terminal.
According to the method and the device for determining the search space, the search space of the user terminal is determined according to the capability level information of the user terminal and the working state of the user terminal, and the search space is flexible and variable, so that the user terminals supporting different bandwidth capabilities are achieved, the bandwidth capabilities of the terminals are adapted, and the cost of the terminals is reduced; in addition, because the search space is flexible and changeable, on one hand, the blind detection times of the user terminal are reduced, and the working efficiency of the user terminal is improved; on the other hand, the system can reasonably allocate the frequency band resources of the search space according to the utilization condition of the frequency band resources, so that the utilization rate of the system resources is optimized.
Drawings
FIG. 1 is a flowchart of a method for determining a search space according to an embodiment of the present invention;
FIG. 2 is a diagram of an apparatus for determining a search space according to an embodiment of the present invention;
fig. 3 is a block diagram of an electronic device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a 230MHz band frequency resource distribution of a power system in the prior art.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the embodiment of the invention, the TD-LTE broadband system is divided into a plurality of continuous or discontinuous sub-bands based on the bandwidth, and the sub-bands refer to frequency points, namely one frequency point, namely one sub-band. Generally, determining the search space, i.e., determining the location information of the search space and the length information of the search space, includes: the size of the search space in the frequency domain and the size of the search space in the time domain.
The size of the search space in the time domain is related to the number of PDCCH repetition transmissions required by the user terminal. The system can determine and adjust the repeated sending times of the PDCCH according to the reported parameters capable of reflecting the channel quality by the user terminal measurement so as to improve the transmission performance of the PDCCH and adapt to the terminals with different coverage requirements. The method of configuring the RRC signaling to the terminal and dynamically adjusting the DCI configuration to determine the size of the search space in the time domain may use the prior art, which is not described herein. The method for determining the search space provided by the embodiment of the invention aims at determining the size of the search space in the frequency domain and the position information of the search space in the frequency domain.
Fig. 1 is a flowchart of a method for determining a search space according to an embodiment of the present invention. As shown in fig. 1, the method comprises the steps of:
step S101, capability level information of a user terminal is obtained, wherein the capability level information is used for indicating a sub-band value M which can be supported by the user terminal, and M is an integer greater than or equal to 1;
specifically, the ue stores its own capability level information, where the capability level information is used to indicate a subband value M that can be supported by the ue, where M is an integer greater than or equal to 1, where the capability level information can be reported by the ue to the base station in a random access process. For example, if m=1, it indicates that the user terminal can only operate in a single band; if m=3, it indicates that the user terminal can choose to operate on at most 3 subbands. For convenience of description, the embodiment of the invention agrees that the user terminal which can only work in the single band is the single band user terminal; if M is greater than 1, the corresponding ue is a multi-subband ue, i.e., an M-subband ue. After the user terminal reports the capability level information of the user terminal, the base station acquires the capability level information of the user terminal.
Step S102, according to the subband value M and the working state of the user terminal, determining the search space of the user terminal.
Specifically, the search space includes a starting subband position of the search space and a length of the search space. When determining the search space of the user terminal, the base station needs to determine the initial subband position of the search space and the length value thereof respectively. In the embodiment of the present invention, the minimum unit of the search space length is a subband. The base station can determine the position and the length of the search space according to the subband value M and the working state of the user terminal, thereby determining the search space of the user terminal.
According to the method for determining the search space, the base station determines the search space of the user terminal according to the capability level information of the user terminal and the working state of the user terminal, and the search space is flexible and variable, so that the user terminals supporting different bandwidth capabilities are achieved, the bandwidth capabilities of the terminals are adapted, and the cost of the terminals is reduced; in addition, because the search space is flexible and changeable, on one hand, the blind detection times of the user terminal are reduced, and the working efficiency of the user terminal is improved; on the other hand, the base station can reasonably allocate the frequency band resources of the search space according to the utilization condition of the frequency band resources of the system, so that the utilization rate of the system resources is optimized.
On the basis of the above embodiment, the working states in the method include: a stay state and a data transmission state.
Specifically, the stay state and the data transmission state both refer to that the user terminal is in an RRC connection state, where the difference between the stay state and the data transmission state is that the uplink direction or the downlink direction of the user terminal is in a DRX inactive state or an active state to be scheduled, and the data transmission state refers to that the uplink direction or the downlink direction of the user terminal is in a working state for transmitting data.
According to the method for determining the search space, the base station designs the search space according to the two working states of the user terminal, and the different working states correspond to different search spaces. Therefore, the method can be used for carrying out specific analysis according to the specific conditions of the user terminal, so that the frequency band resources can be reasonably saved, the blind detection times of the user terminal can be reduced, and the working efficiency of the user terminal can be improved.
On the basis of the above embodiments, in the method, determining the search space of the ue according to the subband value M and the working state of the ue includes:
and if the user terminal is in the resident state, the search space is a resident sub-band.
Specifically, the camping subband refers to a subband with a fixed position allocated by a base station to a user terminal in a random access procedure. There is a one-to-many relationship between the camping subband and the user terminals, and the base station may allocate the same camping subband to multiple user terminals, where for each user terminal its camping subband is determined, so that the user terminal may search based on the determined camping subband.
If the user terminal is in the data transmission state, the search space is a continuous sub-band with the starting sub-band of the last data transmission sub-band as the starting sub-band and N times of the sub-band value M as the length, wherein N is an integer greater than or equal to 1.
Specifically, the data transmission sub-band refers to a sub-band used by the user terminal to transmit data. The position of the data transmission sub-band is determined according to the DCI information received by the user terminal, the base station indicates the sub-band position of the data transmission sub-band of the user terminal through DCI configuration, and the initial sub-band of the data transmission sub-band is the initial sub-band of the search space of the user terminal when the user terminal receives the next DCI, namely the initial sub-band of the search space is the initial sub-band of the last data transmission sub-band, and the initial sub-band position of the search space changes along with the change of the data transmission sub-band. The length of the search space is an integer multiple of the subband value, and the search space is determined according to the initial subband and the length. In the embodiment of the invention, each sub-band in the full bandwidth of the system is provided with a sub-band number, and for convenience of description, the sub-band number is used for representing the position of the sub-band, and the continuous sub-band refers to a plurality of sub-bands adjacent to the sub-band number.
According to the method for determining the search space, the base station designs the search space according to the two working states of the user terminal, and the different working states correspond to different search spaces. Therefore, the method can be used for carrying out specific analysis according to the specific conditions of the user terminal, so that the frequency band resources can be reasonably saved, the blind detection times of the user terminal can be reduced, and the working efficiency of the user terminal can be improved.
On the basis of the above embodiment, in the method, the subband value M is 1, and then N is 1; and if the subband value M is more than or equal to 2, N is 2.
Specifically, if the user terminal is in a data transmission state, the user terminal is a single-band user terminal, and the search space is a data transmission sub-band when data is transmitted last time; and if the user terminal is an M sub-band user, the search space is a continuous sub-band with the length which is 2 times of the value M of the sub-band and is the starting sub-band of the last data transmission sub-band, optionally, the same search space comprises two candidate resource positions with the same size, and uplink and downlink of the same user are supported, or the uplink user and the downlink user work simultaneously.
For example, if a single subband ue is in a camping state, its search space is a camping subband, and it is assumed that the camping subband allocated by the base station to the ue at the time of random access is subband 1, so that the search space for receiving DCI for the first time by the ue is subband 1. If the first DCI indicates the sub-band 2 of the data transmitted by the single-band user terminal, the base station determines that the search space of the user terminal for receiving the second DCI is the sub-band 2; if the second DCI indicates subband 3 in which the user terminal transmits data, the base station determines that the search space in which the user terminal receives the third DCI is subband 3, that is, the search space of the user terminal is the data transmission subband when the user terminal transmits data last time.
For example, a 3-subband ue, if in the camping state, has its search space of camping subband, and it is assumed that the camping subband allocated by the base station to the ue at the time of random access is subband No. 3, so that the search space of the ue receiving DCI for the first time is subband No. 3. If the first DCI indicates that the sub-bands of the 3-sub-band user terminal for transmitting data are 4 and 5, the base station determines that the search space for the user terminal to receive the second DCI is a starting sub-band with the sub-band 4 as a starting sub-band and a 6 sub-band as a length, namely the search space is a continuous sub-band 4-9; if the second DCI indicates that the sub-band positions of the 3-sub-band ue for data transmission are 10, 11, and 12, the base station determines that the search space for the ue to receive the third DCI is the initial sub-band with sub-band 10 and the length of 6 sub-bands, that is, the search space is continuous sub-bands 10-15, that is, the search space of the multi-sub-band ue changes with the change of the data transmission sub-bands.
According to the method for determining the search space, provided by the embodiment of the invention, the search space is flexible and variable, on one hand, the blind detection times of the user terminal are reduced, and the working efficiency of the user terminal is improved; on the other hand, the system can reasonably allocate the frequency band resources of the search space according to the utilization condition of the frequency band resources, so that the utilization rate of the system resources is optimized.
On the basis of the above embodiments, the method further includes: if the N times of the subband value M is larger than the preset threshold value, the length of the search space is the preset threshold value, and the preset threshold value is used for indicating the maximum value of the length of the search space. .
Specifically, the preset threshold value can be configured according to the system requirement and the capability of the user terminal, and the value range of the preset threshold value is {2, P }, wherein P is the maximum even number smaller than the full bandwidth value of the system, the full bandwidth value of the system refers to that the system is divided into a plurality of sub-bands according to the bandwidth, and the total number of all the sub-bands is the full bandwidth value of the system. If the capability level of the ue is high, i.e. the number of subbands supported by the ue is large, the search space length is also maximized. Obtaining the length of M multiplied by N according to the method for determining the length of the search space, comparing the M multiplied by N with a preset threshold value by the base station, and if the length value is larger than the preset threshold value, re-determining the length of the search space.
For example, a 20 subband user terminal, if n=2, has a search space length of 40 subbands, and when the preset threshold is 16 subbands, it is obvious that 40>16, the search space length is 16 subbands instead of 40 subbands.
On the basis of the embodiment, the method further comprises: and determining the working state of the user terminal according to whether the DCI information of the uplink authorization and/or the downlink authorization is sent to the user terminal.
Specifically, if the base station does not send DCI information of uplink grant nor DCI information of downlink grant to the user terminal, the user terminal is in a resident state; if the base station has sent DCI information of uplink authorization and/or downlink authorization to the user terminal, the user terminal is in a data transmission state.
Fig. 2 is a device for determining a search space according to an embodiment of the present invention, as shown in fig. 2, where the device includes: an acquisition unit 201 and a determination unit 202. The acquiring unit 201 is configured to acquire capability level information of a user terminal, where the capability level information is used to indicate a subband value M that can be supported by the user terminal, and M is an integer greater than or equal to 1; the determining unit 202 determines the search space of the ue according to the subband value M and the working state of the ue.
Specifically, the ue stores own capability level information, and the ue may report own capability level information in the random access process, and the obtaining unit 201 obtains the capability level information reported by the ue; the determining unit 202 determines the search space of the user terminal according to the capability level information and the operation state of the user terminal at this time. The device provided in the embodiment of the present invention is for implementing the above method embodiment, and the function of the device may specifically refer to the above method embodiment, which is not described herein again.
According to the device for determining the search space, provided by the embodiment of the invention, the determining unit is used for determining the search space of the user terminal based on the capability level information of the user terminal acquired by the acquiring unit and combining the working state of the user terminal. Therefore, the device can support the user terminals with different bandwidth capabilities, and the terminal cost is reduced; in addition, the search space is further designed by combining the working states of the user, and the lengths of the search spaces in different working states are different, so that the blind detection times of the user terminal are reduced, and the working efficiency of the user terminal is improved.
On the basis of the above embodiment, the working states in the device include: a stay state and a data transmission state.
On the basis of the above embodiments, the determining unit in the apparatus specifically includes:
if the user terminal is in a resident state, the search space is a resident sub-band;
if the user terminal is in the data transmission state, the search space is a continuous sub-band with the starting sub-band of the last data transmission sub-band as the starting sub-band and N times of the sub-band value M as the length, wherein N is an integer greater than or equal to 1.
Specifically, whether the user terminal is a single-subband user terminal or a multi-subband user terminal, if the user terminal is in a resident state, the search space determined by the determining unit for the user terminal is a single subband with a unique fixed position allocated to the user terminal in a random access process. If the user terminal is in the data transmission state, the determining unit determines the search space based on the capability level information of the user terminal acquired by the acquiring unit and the working state of the user terminal. The device provided in the embodiment of the present invention is for implementing the above method embodiment, and the function of the device may specifically refer to the above method embodiment, which is not described herein again.
According to the device for determining the search space, provided by the embodiment of the invention, the search space is designed according to the two working states of the user terminal, and different working states correspond to different search spaces. Therefore, the method can be used for carrying out specific analysis according to the specific conditions of the user terminal, so that the frequency band resources can be reasonably saved, the blind detection times of the user terminal can be reduced, and the working efficiency of the user terminal can be improved.
In the above embodiments, in the apparatus, if the subband value M is 1, N is 1; and if the subband value M is more than or equal to 2, N is 2.
Specifically, if the user terminal is in a data transmission state, the acquisition unit knows that the user terminal is a single-band user terminal, and the determination unit considers that the search space is a data transmission sub-band when data is transmitted last time; if the acquisition unit knows that the user terminal is an M sub-band user, the determination unit considers that the search space is a continuous sub-band with the starting sub-band of the last data transmission sub-band as the starting sub-band and the length which is 2 times of the sub-band value M. The device provided in the embodiment of the present invention is for implementing the above method embodiment, and the function of the device may specifically refer to the above method embodiment, which is not described herein again.
The device for determining the search space provided by the embodiment of the invention has the advantages that the search space is flexible and variable, the user terminals with different grades can be supported, and the length and the position of the search space are flexibly adjusted according to the working state of the user terminals, so that the reasonable use of the frequency band resources of the system is realized, and the working efficiency of both the system and the user terminals is improved.
On the basis of the above embodiments, the device further includes: a determining unit 203 (not shown in fig. 2), which determines that if it is known that N times the subband value M is greater than a preset threshold, the length of the search space is a preset threshold, where the preset threshold is used to indicate the maximum value of the length of the search space.
Specifically, if the acquiring unit learns that the capability level of the user terminal is very high, that is, the number M of sub-bands supported by the user terminal is very large, the determining unit determines that the length of the search space is mxn, and the judging unit compares the length with a preset threshold value by comparing the length with the preset threshold value, if the length does not exceed the preset threshold value, the length of the search space is mxn; if the length is greater than the preset threshold, the length of the search space is the preset threshold, and the value range of the preset threshold is {2, P }, wherein P is the maximum even number smaller than the full bandwidth value of the system, the full bandwidth value of the system refers to the system divided into a plurality of sub-bands according to the bandwidth, and the total number of all the sub-bands is the full bandwidth value of the system. The device provided in the embodiment of the present invention is for implementing the above method embodiment, and the function of the device may specifically refer to the above method embodiment, which is not described herein again.
On the basis of the above embodiments, the device further includes: a state unit 204 (not shown in fig. 2), the state unit 204 determining the operation state of the user terminal according to whether DCI information of an uplink grant and/or a downlink grant has been sent to the user terminal.
Specifically, if the base station does not send DCI information of uplink grant to the user terminal, and also sends DCI information of downlink grant, the state unit considers that the user terminal is in a resident state; if the base station has sent DCI information for uplink grant and/or downlink grant to the user terminal, the state unit considers that the user terminal is in a data transmission state. The determining unit determines the search space of the user terminal according to the capability level information acquired by the acquiring unit and the judging result of the state unit.
Optionally, after determining the length of the search space, the determining unit compares the length with a preset threshold, determines the length of the search space again according to the result of the determining unit, and determines the search space of the user terminal according to the length of the search space and the initial subband position. The device provided in the embodiment of the present invention is for implementing the above method embodiment, and the function of the device may specifically refer to the above method embodiment, which is not described herein again.
The device for determining the search space provided by the embodiment of the invention is based on the judging result of the state unit, the specific analysis of the specific situation, the search space is flexible and variable, the user terminals of different grades can be supported, and the length and the position of the search space can be flexibly adjusted according to the working state of the user terminals, so that the reasonable use of the frequency band resources of the system is realized, and the working efficiency of both the system and the user terminals is improved.
Fig. 3 is a block diagram of an electronic device according to an embodiment of the present invention. Referring to fig. 3, the electronic device includes: a processor (processor) 301, a memory (memory) 302, and a bus 303; wherein the processor 301 and the memory 302 complete communication with each other through the bus 303; the processor 301 is configured to invoke the program instructions in the memory 302 to perform the methods provided in the above method embodiments, for example, including: acquiring capability level information of a user terminal, wherein the capability level information is used for indicating a sub-band value M which can be supported by the user terminal, and M is an integer greater than or equal to 1; and determining the search space of the user terminal according to the subband value M and the working state of the user terminal.
Embodiments of the present invention also provide a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, are capable of performing the methods provided by the above-described method embodiments, for example comprising: acquiring capability level information of a user terminal, wherein the capability level information is used for indicating a sub-band value M which can be supported by the user terminal, and M is an integer greater than or equal to 1; and determining the search space of the user terminal according to the subband value M and the working state of the user terminal.
Embodiments of the present invention also provide a computer readable storage medium storing computer instructions that cause a computer to perform the methods provided by the above-described method embodiments, for example, including: acquiring capability level information of a user terminal, wherein the capability level information is used for indicating a sub-band value M which can be supported by the user terminal, and M is an integer greater than or equal to 1; and determining the search space of the user terminal according to the subband value M and the working state of the user terminal.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A method of determining a search space, comprising:
acquiring capability level information of a user terminal, wherein the capability level information is used for indicating a sub-band value M which can be supported by the user terminal, and M is an integer greater than or equal to 1;
determining a search space of the user terminal according to the subband value M and the working state of the user terminal;
wherein, the operating condition includes: a stay state and a data transmission state;
wherein, the determining the search space of the user terminal according to the subband value M and the working state of the user terminal includes:
if the user terminal is in a resident state, the search space is a resident sub-band;
if the user terminal is in a data transmission state, the search space is a continuous sub-band with the starting sub-band of the last data transmission sub-band as the starting sub-band and N times of the sub-band value M as the length, wherein N is an integer greater than or equal to 1;
wherein, if the subband value M is 1, N is 1;
if the subband value M is more than or equal to 2, N is 2;
wherein, still include:
if the N times of the subband value M is larger than the preset threshold value, the length of the search space is the preset threshold value, and the preset threshold value is used for indicating the maximum value of the length of the search space.
2. The method as recited in claim 1, further comprising:
and determining the working state of the user terminal according to whether the DCI information of the uplink authorization and/or the downlink authorization is sent to the user terminal.
3. An apparatus for determining a search space, comprising:
an obtaining unit, configured to obtain capability level information of a user terminal, where the capability level information is used to indicate a subband value M that can be supported by the user terminal, where M is an integer greater than or equal to 1;
the determining unit is used for determining the search space of the user terminal according to the subband value M and the working state of the user terminal;
wherein, the operating condition includes: a stay state and a data transmission state;
the determining unit is further configured to:
if the user terminal is in a resident state, the search space is a resident sub-band;
if the user terminal is in a data transmission state, the search space is a continuous sub-band with the starting sub-band of the last data transmission sub-band as the starting sub-band and N times of the sub-band value M as the length, wherein N is an integer greater than or equal to 1;
wherein, if the subband value M is 1, N is 1;
if the subband value M is more than or equal to 2, N is 2;
wherein, still include:
if the N times of the subband value M is larger than the preset threshold value, the length of the search space is the preset threshold value, and the preset threshold value is used for indicating the maximum value of the length of the search space.
4. An electronic device, comprising:
the device comprises a memory and a processor, wherein the processor and the memory are communicated with each other through a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1-2.
5. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the method according to any of claims 1 to 2.
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| CN111586872B (en) * | 2019-02-15 | 2023-06-13 | 华为技术有限公司 | Transmission method, device and system based on multiple downlink control information, and storage medium |
| CN111614434B (en) * | 2019-02-25 | 2021-08-31 | 华为技术有限公司 | Blind detection method for search space and communication device |
| CN111758238B (en) * | 2020-05-25 | 2024-05-17 | 北京小米移动软件有限公司 | Method and device for sending and receiving physical downlink control channel and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699901A (en) * | 2009-09-28 | 2010-04-28 | 上海华为技术有限公司 | Method and device for optimizing search space of user equipment |
| CN102204381A (en) * | 2008-10-31 | 2011-09-28 | 松下电器产业株式会社 | Wireless communication base station equipment, wireless communication terminal device and search space setting method |
| CN102368871A (en) * | 2011-11-10 | 2012-03-07 | 电信科学技术研究院 | Physical downlink control channel (PDCCH) resource configuration application method and apparatus thereof |
| CN103688588A (en) * | 2012-06-26 | 2014-03-26 | 华为技术有限公司 | Information transmission method, network node, user equipment and system |
| CN106911999A (en) * | 2015-12-23 | 2017-06-30 | 中兴通讯股份有限公司 | The determination method and device of search space in narrowband systems |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011122893A2 (en) * | 2010-04-02 | 2011-10-06 | (주)팬택 | Method and apparatus for determining search spaces and search positions in a communication system which operates a plurality of component carriers, and method and apparatus for decoding control information using same |
-
2017
- 2017-07-21 CN CN201710600450.8A patent/CN109286983B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102204381A (en) * | 2008-10-31 | 2011-09-28 | 松下电器产业株式会社 | Wireless communication base station equipment, wireless communication terminal device and search space setting method |
| CN101699901A (en) * | 2009-09-28 | 2010-04-28 | 上海华为技术有限公司 | Method and device for optimizing search space of user equipment |
| CN102368871A (en) * | 2011-11-10 | 2012-03-07 | 电信科学技术研究院 | Physical downlink control channel (PDCCH) resource configuration application method and apparatus thereof |
| CN103688588A (en) * | 2012-06-26 | 2014-03-26 | 华为技术有限公司 | Information transmission method, network node, user equipment and system |
| CN106911999A (en) * | 2015-12-23 | 2017-06-30 | 中兴通讯股份有限公司 | The determination method and device of search space in narrowband systems |
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