CN109548162B - Low-delay service control channel design method, low-delay terminal and base station - Google Patents
Low-delay service control channel design method, low-delay terminal and base station Download PDFInfo
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- CN109548162B CN109548162B CN201710664784.1A CN201710664784A CN109548162B CN 109548162 B CN109548162 B CN 109548162B CN 201710664784 A CN201710664784 A CN 201710664784A CN 109548162 B CN109548162 B CN 109548162B
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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
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/7136—Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention provides a low-delay service control channel design method, a low-delay terminal and a base station, wherein the low-delay service control channel design method comprises the following steps: receiving frequency hopping information of a downlink control channel, and acquiring a frequency hopping pattern in the frequency hopping information; and monitoring and blind detection are carried out on the downlink control channel according to the frequency hopping pattern, and downlink control information is obtained. The invention can disperse the downlink control channel on the frequency band by carrying out frequency hopping on the downlink control channel of the low-delay terminal, effectively obtain the frequency diversity gain and avoid the serious influence on the demodulation performance of the downlink control channel due to deep fading. Meanwhile, the frequency hopping does not increase the bandwidth of the downlink control channel, and the complexity of monitoring and blind detection is not increased, so that the downlink control information can be more effectively obtained.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a low-delay service control channel design method, a low-delay terminal and a base station.
Background
In order to meet the requirements of high reliability and Low time delay of communication, a URLLC (Ultra-Reliable and Low Latency Communications, high reliability and Low time delay) service needs to be scheduled in time, a design mode in the related art is that a base station configures time-frequency resources in which downlink physical layer control information may appear, a URLLC terminal performs blind detection on each resource in which downlink control information may appear, and after downlink control information is detected on a certain time-frequency resource, a corresponding URLLC data transmission resource can be determined and data demodulation can be performed. In the related art, the URLLC downlink control channel is concentrated on a narrower bandwidth as shown in fig. 1, and since the bandwidth of the URLLC downlink control channel is concentrated and the candidate areas of the downlink control channel are correspondingly reduced, the complexity of blind demodulation of the URLLC control channel can be reduced. However, due to the bandwidth concentration, if deep fading occurs in this bandwidth, demodulation performance of URLLC downlink control channel is seriously affected.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, an aspect of the present invention is to provide a low latency traffic control channel design method.
Another aspect of the present invention is to provide a low latency terminal.
Yet another aspect of the present invention is to provide a low latency traffic control channel design method.
Yet another aspect of the present invention is to provide a base station.
In view of the above, according to a first aspect of the present invention, a method for designing a low latency traffic control channel is provided, where the method is used for a low latency terminal, and the method includes: receiving frequency hopping information of a downlink control channel, and acquiring a frequency hopping pattern in the frequency hopping information; and monitoring and blind detection are carried out on the downlink control channel according to the frequency hopping pattern, and downlink control information is obtained.
The invention provides a design method of a low-delay service control channel, which is used for a low-delay terminal, a frequency hopping pattern is obtained according to received frequency hopping information of a downlink control channel, the downlink control channel of the low-delay terminal carries out frequency hopping according to the frequency hopping pattern, when the downlink control information exists in the low-delay terminal, the downlink control information can be borne on the region of the downlink control channel, and the downlink control channel is monitored and blindly detected through the frequency hopping pattern, so that the corresponding downlink control information can be obtained. The invention can disperse the downlink control channel on the frequency band by carrying out frequency hopping on the downlink control channel of the low-delay terminal, effectively obtain the frequency diversity gain and avoid the serious influence on the demodulation performance of the downlink control channel due to deep fading. Meanwhile, the frequency hopping does not increase the bandwidth of the downlink control channel, and the complexity of monitoring and blind detection is not increased, so that the downlink control information can be more effectively obtained.
In addition, the design method of the low-delay service control channel provided by the invention can also have the following technical characteristics:
in the above technical solution, preferably, the frequency hopping pattern includes, but is not limited to, cyclic shift frequency hopping and mirror frequency hopping.
In the technical solution, in the frequency hopping processing of the downlink control channel, there may be a plurality of frequency hopping patterns, for example, cyclic shift frequency hopping or mirror frequency hopping is used, and for example, in the cyclic shift frequency hopping, when frequency hopping is performed with 1/4 bandwidths, the downlink channel region of the low latency terminal may be dispersed over 4 different bandwidths, and when frequency hopping is performed with 1/8 bandwidths, the downlink channel region of the low latency terminal may be dispersed over 8 different bandwidths. In the mirror frequency hopping, when 1 symmetrical line is used, the downlink channel region of the low-delay terminal can be dispersed on 2 different bandwidths, and when a plurality of symmetrical lines are used, the downlink channel region of the low-delay terminal can be dispersed on a plurality of different bandwidths. And then can obtain the effective frequency diversity gain, at the same time, will not increase the bandwidth of the downlink control channel, monitor and blind complexity of examining will not increase either.
According to a second aspect of the present invention, a low latency terminal is provided, comprising: the receiving unit is used for receiving frequency hopping information of the downlink control channel and acquiring a frequency hopping pattern in the frequency hopping information; and the detection unit is used for monitoring and blindly detecting the downlink control channel according to the frequency hopping pattern to acquire the downlink control information.
The receiving unit of the low-delay terminal obtains the frequency hopping pattern according to the received frequency hopping information of the downlink control channel, the downlink control channel of the low-delay terminal performs frequency hopping according to the frequency hopping pattern, when the downlink control information exists in the low-delay terminal, the control information is borne on the area of the downlink control channel, and the detecting unit monitors and blindly detects the downlink control channel through the frequency hopping pattern to obtain the corresponding downlink control information. The invention can disperse the downlink control channel on the frequency band by carrying out frequency hopping on the downlink control channel of the low-delay terminal, effectively obtain the frequency diversity gain and avoid the serious influence on the demodulation performance of the downlink control channel due to deep fading. Meanwhile, the frequency hopping does not increase the bandwidth of the downlink control channel, and the complexity of monitoring and blind detection is not increased, so that the downlink control information can be more effectively obtained.
In addition, the low-latency terminal provided by the invention can also have the following technical characteristics:
in the above technical solution, preferably, the frequency hopping pattern includes, but is not limited to, cyclic shift frequency hopping and mirror frequency hopping.
In the technical solution, in the frequency hopping processing of the downlink control channel, there may be a plurality of frequency hopping patterns, for example, cyclic shift frequency hopping or mirror frequency hopping is used, and for example, in the cyclic shift frequency hopping, when frequency hopping is performed with 1/4 bandwidths, the downlink channel region of the low latency terminal may be dispersed over 4 different bandwidths, and when frequency hopping is performed with 1/8 bandwidths, the downlink channel region of the low latency terminal may be dispersed over 8 different bandwidths. In the mirror frequency hopping, when 1 symmetrical line is used, the downlink channel region of the low-delay terminal can be dispersed on 2 different bandwidths, and when a plurality of symmetrical lines are used, the downlink channel region of the low-delay terminal can be dispersed on a plurality of different bandwidths. And then can obtain the effective frequency diversity gain, at the same time, will not increase the bandwidth of the downlink control channel, monitor and blind complexity of examining will not increase either.
According to a third aspect of the present invention, a method for designing a low latency traffic control channel is provided, where the method is used in a base station, and the method includes: configuring frequency hopping information of a downlink control channel of a low-delay terminal; and sending the frequency hopping information of the downlink control channel to the low-delay terminal, and indicating the frequency hopping pattern of the downlink control channel of the low-delay terminal.
The design method of the low-delay service control channel is used for a base station to configure the frequency hopping information of the downlink control channel of the low-delay terminal and send the frequency hopping information to the low-delay terminal, so that the frequency hopping pattern of the downlink control channel of the low-delay terminal is indicated, and the downlink control information of the low-delay terminal is ensured to be borne on the region of the downlink control channel. The invention sends the configured frequency hopping information to the low-delay terminal through the base station, so that the downlink control channel of the low-delay terminal is dispersed on the frequency band, the frequency diversity gain is effectively obtained, and the frequency hopping does not increase the bandwidth of the downlink control channel of the low-delay terminal.
In addition, the low-latency terminal provided by the invention can also have the following technical characteristics:
in the above technical solution, preferably, the sending manner of sending the frequency hopping information of the downlink Control channel to the low latency terminal includes a manner of sending a broadcast message, a manner of sending an RRC (Radio Resource Control) message, or a manner of sending a physical layer signaling; frequency hopping patterns include, but are not limited to, cyclic shift hopping, mirror hopping.
In this technical solution, the base station may send the frequency hopping information of the downlink control channel to the low latency terminal in a broadcast message sending manner, an RRC message sending manner, or a physical layer signaling sending manner, where the frequency hopping may have multiple frequency hopping patterns, for example, cyclic shift frequency hopping or mirror frequency hopping is used, and for example, in the cyclic shift frequency hopping, when performing frequency modulation using 1/4 bandwidth, the downlink channel region of the low latency terminal may be dispersed over 4 different bandwidths, and when performing frequency modulation using 1/8 bandwidth, the downlink channel region of the low latency terminal may be dispersed over 8 different bandwidths. In the mirror frequency hopping, when 1 symmetrical line is used, the downlink channel region of the low-delay terminal can be dispersed on 2 different bandwidths, and when a plurality of symmetrical lines are used, the downlink channel region of the low-delay terminal can be dispersed on a plurality of different bandwidths. Furthermore, effective frequency diversity gain can be obtained, the demodulation performance of the downlink control channel is prevented from being seriously influenced by deep fading, and the bandwidth of the downlink control channel cannot be increased.
In any of the above technical solutions, preferably, the frequency hopping shutdown information of the downlink control channel is sent to the low latency terminal by sending a broadcast message; or sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a mode of sending RRC message; or sending the frequency hopping closing information of the downlink control channel to the low-delay terminal by sending a physical layer signaling mode.
In the technical scheme, the frequency hopping processing of the low-latency terminal downlink control channel can be used as an optional feature, that is, the base station can turn off or turn on the frequency hopping through configuration. The base station may notify the low latency terminal to close the downlink control channel hopping in various ways, for example: the method comprises the steps of sending broadcast information to a low-delay terminal to send frequency hopping closing information of a downlink control channel, sending RRC information to the low-delay terminal to send frequency hopping closing information of the downlink control channel, and sending physical layer signaling to the low-delay terminal to send frequency hopping closing information of the downlink control channel.
According to a fourth aspect of the present invention, there is provided a base station, comprising: the configuration unit is used for configuring frequency hopping information of a downlink control channel of the low-delay terminal; and the sending unit is used for sending the frequency hopping information of the downlink control channel to the low-delay terminal and indicating the frequency hopping pattern of the downlink control channel of the low-delay terminal.
The base station and the configuration unit configure the frequency hopping information of the downlink control channel of the low-delay terminal, and the sending unit sends the frequency hopping information to the low-delay terminal, so that the frequency hopping pattern of the downlink control channel of the low-delay terminal is indicated, and the downlink control information of the low-delay terminal is borne on the area of the downlink control channel. The invention sends the configured frequency hopping information to the low-delay terminal through the base station, so that the downlink control channel of the low-delay terminal is dispersed on the frequency band, the frequency diversity gain is effectively obtained, and the frequency hopping does not increase the bandwidth of the downlink control channel of the low-delay terminal.
In addition, the base station provided by the invention can also have the following technical characteristics:
in the above technical solution, preferably, the sending manner of sending the frequency hopping information of the downlink control channel to the low latency terminal includes a manner of sending a broadcast message, a manner of sending an RRC message, or a manner of sending a physical layer signaling; frequency hopping patterns include, but are not limited to, cyclic shift hopping, mirror hopping.
In this technical solution, the base station may send the frequency hopping information of the downlink control channel to the low latency terminal in a broadcast message sending manner, an RRC message sending manner, or a physical layer signaling sending manner, where the frequency hopping may have multiple frequency hopping patterns, for example, cyclic shift frequency hopping or mirror frequency hopping is used, and for example, in the cyclic shift frequency hopping, when performing frequency modulation using 1/4 bandwidth, the downlink channel region of the low latency terminal may be dispersed over 4 different bandwidths, and when performing frequency modulation using 1/8 bandwidth, the downlink channel region of the low latency terminal may be dispersed over 8 different bandwidths. In the mirror frequency hopping, when 1 symmetrical line is used, the downlink channel region of the low-delay terminal can be dispersed on 2 different bandwidths, and when a plurality of symmetrical lines are used, the downlink channel region of the low-delay terminal can be dispersed on a plurality of different bandwidths. Furthermore, effective frequency diversity gain can be obtained, the demodulation performance of the downlink control channel is prevented from being seriously influenced by deep fading, and the bandwidth of the downlink control channel cannot be increased.
In any of the above technical solutions, preferably, the sending unit is further configured to: sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a broadcast message sending mode; or sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a mode of sending RRC message; or sending the frequency hopping closing information of the downlink control channel to the low-delay terminal by sending a physical layer signaling mode.
In the technical scheme, the frequency hopping processing of the low-latency terminal downlink control channel can be used as an optional feature, that is, the base station can turn off or turn on the frequency hopping through configuration. The base station may notify the low latency terminal to close the downlink control channel hopping in various ways, for example: the method comprises the steps of sending broadcast information to a low-delay terminal to send frequency hopping closing information of a downlink control channel, sending RRC information to the low-delay terminal to send frequency hopping closing information of the downlink control channel, and sending physical layer signaling to the low-delay terminal to send frequency hopping closing information of the downlink control channel.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a diagram illustrating a time-frequency resource of low latency traffic control information in the related art;
fig. 2 is a flow chart illustrating a low latency traffic control channel design method according to an embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a low-latency terminal of an embodiment of the present invention;
fig. 4 is a flow chart illustrating a low latency traffic control channel design method according to an embodiment of the present invention;
fig. 5 shows a schematic structural diagram of a base station of an embodiment of the present invention;
FIG. 6 illustrates a cyclic shift hopping pattern according to an embodiment of the present invention;
figure 7 shows a mirror hopping pattern for one embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
An embodiment of a first aspect of the present invention provides a method for designing a low latency traffic control channel, which is used for a low latency terminal, and fig. 2 illustrates a flow diagram of the method for designing a low latency traffic control channel according to an embodiment of the present invention. Wherein, the method comprises the following steps:
and 204, monitoring and blind detecting the downlink control channel according to the frequency hopping pattern, and acquiring downlink control information.
The invention provides a design method of a low-delay service control channel, which is used for a low-delay terminal, a frequency hopping pattern is obtained according to received frequency hopping information of a downlink control channel, the downlink control channel of the low-delay terminal carries out frequency hopping according to the frequency hopping pattern, when the downlink control information exists in the low-delay terminal, the downlink control information can be borne on the region of the downlink control channel, and the downlink control channel is monitored and blindly detected through the frequency hopping pattern, so that the corresponding downlink control information can be obtained. The invention can disperse the downlink control channel on the frequency band by carrying out frequency hopping on the downlink control channel of the low-delay terminal, effectively obtain the frequency diversity gain and avoid the serious influence on the demodulation performance of the downlink control channel due to deep fading. Meanwhile, the frequency hopping does not increase the bandwidth of the downlink control channel, and the complexity of monitoring and blind detection is not increased, so that the downlink control information can be more effectively obtained.
In one embodiment of the present invention, the frequency hopping pattern preferably includes, but is not limited to, cyclic shift frequency hopping, mirror frequency hopping.
In this embodiment, in the frequency hopping processing of the downlink control channel, there may be multiple frequency hopping patterns, for example, cyclic shift frequency hopping or mirror frequency hopping is adopted, for example, in cyclic shift frequency hopping, when frequency hopping is carried out with 1/4 bandwidths, the downlink channel region of the low-latency terminal may be dispersed over 4 different bandwidths, and when frequency hopping is carried out with 1/8 bandwidths, the downlink channel region of the low-latency terminal may be dispersed over 8 different bandwidths. In the mirror frequency hopping, when 1 symmetrical line is used, the downlink channel region of the low-delay terminal can be dispersed on 2 different bandwidths, and when a plurality of symmetrical lines are used, the downlink channel region of the low-delay terminal can be dispersed on a plurality of different bandwidths. And then can obtain the effective frequency diversity gain, at the same time, will not increase the bandwidth of the downlink control channel, monitor and blind complexity of examining will not increase either.
In a second aspect of the present invention, a low latency terminal is provided, and fig. 3 illustrates a schematic structural diagram of a low latency terminal 300 according to an embodiment of the present invention. The low latency terminal 300 includes:
a receiving unit 302, configured to receive frequency hopping information of a downlink control channel, and acquire a frequency hopping pattern in the frequency hopping information;
a detecting unit 304, configured to perform monitoring and blind detection on the downlink control channel according to the frequency hopping pattern, and acquire downlink control information.
In the low-delay terminal provided by the present invention, the receiving unit 302 obtains a frequency hopping pattern according to the received frequency hopping information of the downlink control channel, the downlink control channel of the low-delay terminal performs frequency hopping according to the frequency hopping pattern, when the downlink control information exists in the low-delay terminal, the control information is carried in the region of the downlink control channel, and the detecting unit 304 performs monitoring and blind detection on the downlink control channel through the frequency hopping pattern, so as to obtain the corresponding downlink control information. The invention can disperse the downlink control channel on the frequency band by carrying out frequency hopping on the downlink control channel of the low-delay terminal, effectively obtain the frequency diversity gain and avoid the serious influence on the demodulation performance of the downlink control channel due to deep fading. Meanwhile, the frequency hopping does not increase the bandwidth of the downlink control channel, and the complexity of monitoring and blind detection is not increased, so that the downlink control information can be more effectively obtained.
In one embodiment of the present invention, the frequency hopping pattern preferably includes, but is not limited to, cyclic shift frequency hopping, mirror frequency hopping.
In this embodiment, in the frequency hopping processing of the downlink control channel, there may be multiple frequency hopping patterns, for example, cyclic shift frequency hopping or mirror frequency hopping is adopted, for example, in cyclic shift frequency hopping, when frequency hopping is carried out with 1/4 bandwidths, the downlink channel region of the low-latency terminal may be dispersed over 4 different bandwidths, and when frequency hopping is carried out with 1/8 bandwidths, the downlink channel region of the low-latency terminal may be dispersed over 8 different bandwidths. In the mirror frequency hopping, when 1 symmetrical line is used, the downlink channel region of the low-delay terminal can be dispersed on 2 different bandwidths, and when a plurality of symmetrical lines are used, the downlink channel region of the low-delay terminal can be dispersed on a plurality of different bandwidths. And then can obtain the effective frequency diversity gain, at the same time, will not increase the bandwidth of the downlink control channel, monitor and blind complexity of examining will not increase either.
An embodiment of a third aspect of the present invention provides a method for designing a low latency traffic control channel, which is used in a base station, and fig. 4 shows a flowchart of the method for designing a low latency traffic control channel according to an embodiment of the present invention. Wherein, the method comprises the following steps:
The design method of the low-delay service control channel is used for a base station to configure the frequency hopping information of the downlink control channel of the low-delay terminal and send the frequency hopping information to the low-delay terminal, thereby indicating the frequency hopping pattern of the downlink control channel of the low-delay terminal and further ensuring that the downlink control information of the low-delay terminal can be borne on the region of the downlink control channel. The invention sends the configured frequency hopping information to the low-delay terminal through the base station, so that the downlink control channel of the low-delay terminal is dispersed on the frequency band, the frequency diversity gain is effectively obtained, and the frequency hopping does not increase the bandwidth of the downlink control channel of the low-delay terminal.
In an embodiment of the present invention, preferably, the sending manner of sending the frequency hopping information of the downlink control channel to the low latency terminal includes a manner of sending a broadcast message, a manner of sending an RRC message, or a manner of sending physical layer signaling; frequency hopping patterns include, but are not limited to, cyclic shift hopping, mirror hopping.
In this embodiment, the base station may transmit the frequency hopping information of the downlink control channel to the low latency terminal in a broadcast message transmission manner, an RRC message transmission manner, or a physical layer signaling transmission manner, where the frequency hopping may have multiple frequency hopping patterns, for example, cyclic shift frequency hopping or mirror frequency hopping is used, and for example, in the cyclic shift frequency hopping, when performing frequency hopping using 1/4 bandwidth, the downlink channel region of the low latency terminal may be dispersed over 4 different bandwidths, and when performing frequency hopping using 1/8 bandwidth, the downlink channel region of the low latency terminal may be dispersed over 8 different bandwidths. In the mirror frequency hopping, when 1 symmetrical line is used, the downlink channel region of the low-delay terminal can be dispersed on 2 different bandwidths, and when a plurality of symmetrical lines are used, the downlink channel region of the low-delay terminal can be dispersed on a plurality of different bandwidths. Furthermore, effective frequency diversity gain can be obtained, the demodulation performance of the downlink control channel is prevented from being seriously influenced by deep fading, and the bandwidth of the downlink control channel cannot be increased.
In an embodiment of the present invention, preferably, the frequency hopping shutdown information of the downlink control channel is sent to the low latency terminal by sending a broadcast message; or sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a mode of sending RRC message; or sending the frequency hopping closing information of the downlink control channel to the low-delay terminal by sending a physical layer signaling mode.
In this embodiment, the frequency hopping processing of the low latency terminal downlink control channel may be used as an optional feature, that is, the base station may turn off or turn on the frequency hopping by configuration. The base station may notify the low latency terminal to close the downlink control channel hopping in various ways, for example: the method comprises the steps of sending broadcast information to a low-delay terminal to send frequency hopping closing information of a downlink control channel, sending RRC information to the low-delay terminal to send frequency hopping closing information of the downlink control channel, and sending physical layer signaling to the low-delay terminal to send frequency hopping closing information of the downlink control channel.
In an embodiment of the fourth aspect of the present invention, a base station is provided, and fig. 5 illustrates a schematic structural diagram of a base station 500 according to an embodiment of the present invention. Wherein, the base station 500 includes:
a configuration unit 502, configured to configure frequency hopping information of a downlink control channel of a low latency terminal;
a sending unit 504, configured to send frequency hopping information of the downlink control channel to the low latency terminal, and indicate a downlink control channel frequency hopping pattern of the low latency terminal.
In the base station provided by the present invention, the configuration unit 502 configures the frequency hopping information of the downlink control channel of the low latency terminal, and the sending unit 504 sends the frequency hopping information to the low latency terminal, so as to indicate the frequency hopping pattern of the downlink control channel of the low latency terminal, thereby ensuring that the downlink control information of the low latency terminal is loaded on the area of the downlink control channel. The invention sends the configured frequency hopping information to the low-delay terminal through the base station, so that the downlink control channel of the low-delay terminal is dispersed on the frequency band, the frequency diversity gain is effectively obtained, and the frequency hopping does not increase the bandwidth of the downlink control channel of the low-delay terminal.
In an embodiment of the present invention, preferably, the sending manner of sending the frequency hopping information of the downlink control channel to the low latency terminal includes a manner of sending a broadcast message, a manner of sending an RRC message, or a manner of sending physical layer signaling; frequency hopping patterns include, but are not limited to, cyclic shift hopping, mirror hopping.
In this embodiment, the base station may transmit the frequency hopping information of the downlink control channel to the low latency terminal in a broadcast message transmission manner, an RRC message transmission manner, or a physical layer signaling transmission manner, where the frequency hopping may have multiple frequency hopping patterns, for example, cyclic shift frequency hopping or mirror frequency hopping is used, and for example, in the cyclic shift frequency hopping, when performing frequency hopping using 1/4 bandwidth, the downlink channel region of the low latency terminal may be dispersed over 4 different bandwidths, and when performing frequency hopping using 1/8 bandwidth, the downlink channel region of the low latency terminal may be dispersed over 8 different bandwidths. In the mirror frequency hopping, when 1 symmetrical line is used, the downlink channel region of the low-delay terminal can be dispersed on 2 different bandwidths, and when a plurality of symmetrical lines are used, the downlink channel region of the low-delay terminal can be dispersed on a plurality of different bandwidths. Furthermore, effective frequency diversity gain can be obtained, the demodulation performance of the downlink control channel is prevented from being seriously influenced by deep fading, and the bandwidth of the downlink control channel cannot be increased.
In an embodiment of the present invention, preferably, the sending unit 504 is further configured to: sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a broadcast message sending mode; or sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a mode of sending RRC message; or sending the frequency hopping closing information of the downlink control channel to the low-delay terminal by sending a physical layer signaling mode.
In the technical scheme, the frequency hopping processing of the low-latency terminal downlink control channel can be used as an optional feature, that is, the base station can turn off or turn on the frequency hopping through configuration. The base station may notify the low latency terminal to close the downlink control channel hopping in various ways, for example: the method comprises the steps of sending broadcast information to a low-delay terminal to send frequency hopping closing information of a downlink control channel, sending RRC information to the low-delay terminal to send frequency hopping closing information of the downlink control channel, and sending physical layer signaling to the low-delay terminal to send frequency hopping closing information of the downlink control channel.
The method for designing the low-delay service control channel of the embodiment of the invention comprises the following steps:
step 1: the base station configures a frequency hopping pattern of a downlink control channel of the low-delay terminal as a cyclic displacement frequency hopping pattern;
step 2: a base station broadcasts downlink control channel frequency hopping information of a low-delay terminal to a cell through a broadcast message;
and step 3: when frequency modulation is performed by adopting 1/4 bandwidth, outputting a cyclic shift frequency hopping pattern of a downlink control channel of a low-delay terminal as shown in fig. 6, wherein a downlink control channel region appears periodically in a time domain, a black square box represents that the low-delay terminal has downlink control information transmission, a white square box represents that the downlink control channel region has no control information transmission of the low-delay terminal, and the downlink control channel regions of the low-delay terminal are dispersed on 4 different bandwidths, so that frequency diversity gain can be obtained;
and 4, step 4: and monitoring and blind detection are carried out on the downlink control channel according to the frequency hopping pattern, and downlink control information is obtained.
The method for designing a low-latency service control channel according to another embodiment of the present invention includes the following steps:
step 1: the base station configures a frequency hopping pattern of a downlink control channel of the low-delay terminal as a mirror image frequency hopping pattern;
step 2: the base station informs the downlink control channel frequency hopping information of the low-delay terminal by using an RRC message;
and step 3: when 1 line of symmetry is used, outputting a mirror frequency hopping pattern of a downlink control channel of the low-latency terminal as shown in fig. 7, wherein a downlink control channel region appears periodically in a time domain, a black square box represents that the low-latency terminal has downlink control information transmission, a white square box represents that the downlink control channel region has no control information transmission of the low-latency terminal, and the downlink control channel regions of the low-latency terminal are dispersed on 2 different bandwidths, so that frequency diversity gain can be obtained;
and 4, step 4: monitoring and blind detecting a downlink control channel according to the frequency hopping pattern to acquire downlink control information;
and 5: and the base station broadcasts the downlink control channel frequency hopping closing information of the low-delay terminal to the cell through the broadcast message.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A design method of a low-delay service control channel is used for a low-delay terminal, and is characterized in that the design method of the low-delay service control channel comprises the following steps:
receiving frequency hopping information of a downlink control channel, and acquiring a frequency hopping pattern in the frequency hopping information;
and monitoring and blind detecting the downlink control channel according to the frequency hopping pattern to acquire downlink control information.
2. The low latency traffic control channel design method according to claim 1,
the hopping pattern includes, but is not limited to, cyclic shift hopping, mirror hopping.
3. A low latency terminal, comprising:
a receiving unit, configured to receive frequency hopping information of a downlink control channel, and acquire a frequency hopping pattern in the frequency hopping information;
and the detection unit is used for monitoring and blindly detecting the downlink control channel according to the frequency hopping pattern to acquire downlink control information.
4. The terminal of claim 3,
the hopping pattern includes, but is not limited to, cyclic shift hopping, mirror hopping.
5. A method for designing a low latency traffic control channel is used for a base station, and the method for designing the low latency traffic control channel comprises the following steps:
configuring frequency hopping information of a downlink control channel of a low-delay terminal;
and sending the frequency hopping information of the downlink control channel to the low-delay terminal, and indicating the frequency hopping pattern of the downlink control channel of the low-delay terminal.
6. The low latency traffic control channel design method according to claim 5,
the sending mode of sending the frequency hopping information of the downlink control channel to the low-delay terminal comprises a mode of sending a broadcast message, a mode of sending an RRC message or a mode of sending physical layer signaling;
the hopping pattern includes, but is not limited to, cyclic shift hopping, mirror hopping.
7. The method of claim 5, further comprising:
sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a broadcast message sending mode; or
Sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a mode of sending RRC message; or
And sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a physical layer signaling sending mode.
8. A base station, comprising:
the configuration unit is used for configuring frequency hopping information of a downlink control channel of the low-delay terminal;
and the sending unit is used for sending the frequency hopping information of the downlink control channel to the low-delay terminal and indicating the frequency hopping pattern of the downlink control channel of the low-delay terminal.
9. The base station of claim 8,
the sending mode of sending the frequency hopping information of the downlink control channel to the low-delay terminal comprises a mode of sending a broadcast message, a mode of sending an RRC message or a mode of sending physical layer signaling;
the hopping pattern includes, but is not limited to, cyclic shift hopping, mirror hopping.
10. The base station of claim 8, wherein the sending unit is further configured to:
sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a broadcast message sending mode; or
Sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a mode of sending RRC message; or
And sending the frequency hopping closing information of the downlink control channel to the low-delay terminal in a physical layer signaling sending mode.
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