CN113079567A - Transmission method, base station and terminal for paging message of NR-U system - Google Patents
Transmission method, base station and terminal for paging message of NR-U system Download PDFInfo
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- CN113079567A CN113079567A CN202010006300.6A CN202010006300A CN113079567A CN 113079567 A CN113079567 A CN 113079567A CN 202010006300 A CN202010006300 A CN 202010006300A CN 113079567 A CN113079567 A CN 113079567A
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Abstract
The embodiment of the invention provides a method, a base station and a terminal for transmitting paging messages of an NR-U system, wherein the method comprises the following steps: determining to send a paging message, and sending the paging message and a Synchronization Signal Block (SSB) message carrying a Master Information Block (MIB) message to a terminal in the same time slot, so that the terminal receives the paging message in a public search space configured in the MIB. According to the NR-U system paging message transmission method, the base station and the terminal provided by the embodiment of the invention, the MIB is transmitted in the SSB, so that the terminal directly receives the paging message in the public search space configured in the MIB, and the terminal can receive the paging message without receiving the SIB1 message, thereby saving the resource configuration of SIB1, reducing the receiving time delay of the paging message, and simultaneously reducing the probability of blocking the transmission of the paging message due to LBT failure or COT failure.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a base station, and a terminal for transmitting paging messages in an NR-U system.
Background
There are two main application scenarios for paging in the 5G NR (New Radio) system: one is core network initiated paging and one is gNB (5G base station) initiated paging. The purpose of paging initiated by the gNB is to inform the UE of system message updates. The paging of the NR system may store the indication of system message update on a Control Channel, i.e., a PDCCH (Physical Downlink Control Channel) for sending paging instead of a PDSCH (Physical Downlink Shared Channel), and mainly aims to improve the Downlink spectrum efficiency.
The paging message is transmitted in a similar manner to the SSB (SS/PBCH Block, synchronization signal Block), and a beamforming manner is also used. The UE typically receives the paging message in the direction of the best SSB beam that can be detected. In the NR system, there are two Search spaces (Search spaces) in which the UE receives the PDCCH carrying the paging message: paging search space in SIB1(System Information Block Type 1); search space in MIB (Master Information Block). The physical layer specifies that the search space configured in the SIB1 takes precedence, and if the search space configured in the SIB1 does not exist, the UE adopts the search space configured in the MIB. And the search space configured in the MIB is itself used to receive the SIB1 message. This timing relationship is that the UE, after decoding the MIB, first detects and receives the SIB1 message through the search space in the MIB, and then receives the PDCCH of the paging message on the paging search space in SIB1, and if the paging search space is not found in SIB1, then receives the PDCCH of the paging message on the search space of the MIB. That is, the UE needs to receive the SIB1 message before receiving the paging message.
Since in the NR-U (5G NR in Unlicensed Spectrum, 5G NR) system, LBT (list Before talk) detection must be performed Before all channels are transmitted, if the UE receives the SIB1 message and can receive the paging message, transmission of the paging message may be blocked due to LBT failure or cot (channel Occupied time) failure, and the paging message reception delay is long, which is not favorable for effective configuration of SIB1 resources.
Disclosure of Invention
Embodiments of the present invention provide a method, a base station, and a terminal for transmitting paging messages in an NR-U system, which overcome the above problems or at least partially solve the above problems.
In a first aspect, an embodiment of the present invention provides a method for transmitting a paging message in an NR-U system, where the method is applied to a base station, and includes:
determining to send a paging message, and sending the paging message and a Synchronization Signal Block (SSB) message carrying a Master Information Block (MIB) message to a terminal in the same time slot, so that the terminal receives the paging message in a public search space configured in the MIB.
Wherein, the sending the paging message and the synchronization signal block SSB message carrying the master information block MIB message to the terminal in the same time slot specifically comprises:
sending the paging message and the SSB message to a terminal in a time division multiplexing mode; or, the paging message and the SSB message are sent to the terminal in a frequency division multiplexing manner.
Wherein, the 1bit information in the MIB message is used for indicating whether the current time slot of the terminal needs to receive the paging message.
In a second aspect, an embodiment of the present invention provides a method for transmitting a paging message in an NR-U system, where the method is applied to a terminal, and includes:
receiving a Synchronization Signal Block (SSB) message sent by a base station, and decoding a Master Information Block (MIB) message carried in the SSB message;
and receiving a paging message sent by a base station in a public search space configured in the MIB.
Wherein the mapping relationship between the paging message and the SSB message comprises: the paging message and the SSB message are mapped on different OFDM symbols, or the paging message and the SSB message are multiplexed on a frequency domain.
The 1bit information in the MIB message is used for indicating whether a paging message needs to be received in the current time slot or not; correspondingly, receiving a paging message sent by a base station in a public search space configured in the MIB specifically includes:
and if the paging message sent by the base station is determined to be required to be received in the current time slot according to the decoding result of the MIB message, receiving the paging message in a public search space configured in the MIB.
In a third aspect, an embodiment of the present invention provides a base station, including:
and the paging message sending module is used for determining to send a paging message, and sending the paging message and a synchronous signal block SSB message carrying a master information block MIB message to a terminal in the same time slot so that the terminal can receive the paging message in a public search space configured in the MIB.
In a fourth aspect, an embodiment of the present invention provides a terminal, including:
the MIB decoding module is used for receiving a synchronous signal block SSB message sent by a base station and decoding a master information block MIB message carried in the synchronous signal block SSB message;
and a paging message receiving module, configured to receive, in the public search space configured in the MIB, a paging message sent by a base station.
In a fifth aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the method for transmitting paging messages of the NR-U system as provided in the first aspect or the second aspect when executing the program.
In a sixth aspect, an embodiment of the present invention provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the method for transmitting paging messages of an NR-U system as provided in the first or second aspect.
According to the NR-U system paging message transmission method, the base station and the terminal provided by the embodiment of the invention, the MIB is transmitted in the SSB, so that the terminal directly receives the paging message in the public search space configured in the MIB, and the terminal can receive the paging message without receiving the SIB1 message, thereby saving the resource configuration of SIB1, reducing the receiving time delay of the paging message, and simultaneously reducing the probability of blocking the transmission of the paging message due to LBT failure or COT failure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a mapping relationship between a paging message and an SSB message according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for transmitting a paging message in an NR-U system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a terminal according to another embodiment of the present invention;
fig. 4 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a method for transmitting paging messages of an NR-U system, which is applied to a base station and comprises the following steps:
determining to send a paging message, and sending the paging message and a Synchronization Signal Block (SSB) message carrying a Master Information Block (MIB) message to a terminal in the same time slot, so that the terminal receives the paging message in a public search space configured in the MIB.
Specifically, the execution subject of the embodiment of the present invention is the base station gNB. In the NR-U system, when the gNB needs to inform the UE of system message update, the gNB determines to send a paging message to the terminal. The gNB sends the paging message and a Synchronization Signal Block (SSB) message carrying a Master Information Block (MIB) message to the terminal in the same time slot, that is, the gNB transmits the MIB in the SSB and sends a Physical Downlink Control Channel (PDCCH) carrying the paging message to the terminal in the same time slot, so that the terminal can directly detect and receive the paging message in a common search space configured in the MIB, and thus the terminal does not need to receive the paging message after receiving the SIB1 message, and the transmission of the paging message is not limited to extra LBT.
The method for transmitting the paging message of the NR-U system provided by the embodiment of the invention transmits the MIB in the SSB, so that the terminal directly receives the paging message in the public search space configured in the MIB, and the terminal can receive the paging message without receiving the SIB1 message, thereby saving the resource configuration of SIB1, reducing the receiving time delay of the paging message, and simultaneously reducing the probability of blocking the transmission of the paging message due to LBT failure or COT failure.
Based on the content of the foregoing embodiment, the paging message and the synchronization signal block SSB message carrying the master information block MIB message are sent to the terminal in the same timeslot, which specifically includes:
sending the paging message and the SSB message to a terminal in a time division multiplexing mode; or, the paging message and the SSB message are sent to the terminal in a frequency division multiplexing manner.
Specifically, fig. 1 is a schematic diagram of a mapping relationship between a paging message and an SSB message according to an embodiment of the present invention. As shown in fig. 1, the mapping relationship between the paging message and the SSB message includes: in mode 1, Paging messages Paging and SSB messages are mapped on different OFDM symbols, that is, the Paging messages Paging and SSB messages are sent to the terminal by the gNB in a time division multiplexing manner; or, in mode 2, the Paging message Paging and the SSB message are multiplexed in the frequency domain, that is, the gNB sends the Paging message Paging and the SSB message to the terminal in a frequency division multiplexing manner, and in mode 2, the multiplexing of the Paging message Paging and the SSB message in the frequency domain may further satisfy the requirement that the usage ratio of the NR-U system initial bwp (bandwidth part) is not less than 80%.
Based on the content of the above embodiment, the 1bit information in the MIB message is used to indicate whether the terminal needs to receive a paging message in the current timeslot.
Specifically, the embodiment of the invention utilizes the 1bit information in the MIB message to indicate whether the current time slot of the terminal needs to receive the paging message. If the 1bit information indicates that the current time slot of the terminal needs to receive the paging message, the terminal can receive the PDCCH for detecting the paging message in the current time slot and the public search space configured in the MIB and receive the paging message.
As shown in fig. 2, a schematic flow chart of a method for transmitting a paging message in an NR-U system according to an embodiment of the present invention is applied to a terminal, and includes:
Specifically, an execution main body of the embodiment of the present invention is a terminal UE, the UE receives a synchronization signal block SSB message sent by a base station, the synchronization signal block SSB message carries a master information block MIB message, and the UE decodes the master information block MIB message carried in the synchronization signal block SSB message. After the UE decodes the MIB, the UE directly detects a PDCCH carrying a paging message and sent by the base station in a common search space configured in the MIB, and then receives the paging message sent by the base station, because LBT (listen Before talk) detection must be performed Before all channels are transmitted in a UL-R system, in the embodiment of the present invention, the UE directly receives the paging message sent by the base station in the common search space configured in the MIB, compared with the prior art that after the UE decodes the MIB, the UE first detects and receives an SIB1 message through the common search space in the MIB, and then detects the PDCCH carrying the paging message in the SIB1, which reduces LBT once, thereby reducing the probability that reception of the paging message is blocked due to LBT failure or COT failure.
In the method for transmitting paging messages of the NR-U system according to the embodiments of the present invention, the terminal directly receives the paging messages in the common search space configured in the MIB, and does not need to receive the SIB1 message, so that the resource configuration of the SIB1 can be saved, the reception delay of the paging messages can be reduced, and the probability that the transmission of the paging messages is blocked due to LBT failure or COT failure can be reduced.
Based on the content of the above embodiment, the mapping relationship between the paging message and the SSB message includes: the paging message and the SSB message are mapped on different OFDM symbols, or the paging message and the SSB message are multiplexed on a frequency domain.
Specifically, the base station sends the paging message and the SSB message to the terminal in the same time slot, and may adopt a time division multiplexing or frequency division multiplexing manner, that is, the mapping relationship between the paging message and the SSB message includes: the paging message and the SSB message are mapped on different OFDM symbols, or the paging message and the SSB message are multiplexed on a frequency domain.
Based on the content of the above embodiment, the 1bit information in the MIB message is used to indicate whether a paging message needs to be received at the current timeslot; correspondingly, receiving a paging message sent by a base station in a public search space configured in the MIB specifically includes:
and if the paging message sent by the base station is determined to be required to be received in the current time slot according to the decoding result of the MIB message, receiving the paging message in a public search space configured in the MIB.
Specifically, the base station uses the 1bit information in the MIB message to indicate whether the terminal needs to receive the paging message at the current time slot. If the terminal determines that the paging message sent by the base station needs to be received in the current time slot according to the decoding result of the MIB message, the public search space configured in the MIB receives the PDCCH for detecting the paging message in the current time slot, and then receives the paging message. If the terminal determines that the paging message sent by the base station does not need to be received in the current time slot according to the decoding result of the MIB message, the terminal does not detect the PDCCH bearing the paging message in the current time slot, so that resources are more reasonably configured.
Another embodiment of the present invention provides a base station, including:
and the paging message sending module is used for determining to send a paging message, and sending the paging message and a synchronous signal block SSB message carrying a master information block MIB message to a terminal in the same time slot so that the terminal can receive the paging message in a public search space configured in the MIB.
Specifically, in the NR-U system, when the gNB needs to notify the UE of system message update, it is determined to send a paging message to the terminal. The gNB sends the paging message and a Synchronization Signal Block (SSB) message carrying a Master Information Block (MIB) message to the terminal through a paging message sending module in the same time slot, namely the gNB transmits the MIB in the SSB and sends a Physical Downlink Control Channel (PDCCH) carrying the paging message to the terminal in the same time slot, so that the terminal can directly detect and receive the paging message in a public search space configured in the MIB, and therefore the terminal does not need to receive the paging message after receiving the SIB1 message, and the transmission of the paging message is not limited to extra local binary transmission Lots (LBT).
The base station provided by the embodiment of the invention transmits the MIB in the SSB, so that the terminal directly receives the paging message in the public search space configured in the MIB, and the terminal can receive the paging message without receiving the SIB1 message, thereby saving the resource configuration of SIB1, reducing the receiving time delay of the paging message, and reducing the probability of blocking the transmission of the paging message due to LBT failure or COT failure.
As shown in fig. 3, a schematic structural diagram of a terminal provided for another embodiment of the present invention includes: a MIB decoding module 310 and a paging message receiving module 320, wherein,
a MIB decoding module 310, configured to receive a synchronization signal block SSB message sent by a base station, and decode a master information block MIB message carried in the synchronization signal block SSB message;
a paging message receiving module 320, configured to receive a paging message sent by a base station in a common search space configured in the MIB.
Specifically, the MIB decoding module 310 is configured to receive a synchronization signal block SSB message sent by a base station, where the synchronization signal block SSB message carries a master information block MIB message, and decode the master information block MIB message carried in the synchronization signal block SSB message. After the UE decodes the MIB, the UE directly detects, through the common search space configured in the MIB by the paging message receiving module 320, the PDCCH carrying the paging message sent by the base station, and then receives the paging message sent by the base station, because LBT (listen Before talk) detection must be performed Before all channels are transmitted in the UL-R system, the paging message sent by the base station is directly received by the paging message receiving module 320 in the common search space configured in the MIB in the embodiments of the present invention, compared with the prior art in which the UE detects and receives the SIB1 message through the common search space in the MIB first and then detects the PDCCH carrying the paging message on the paging search space in the SIB1 after decoding the MIB, which reduces LBT once, thereby reducing the probability that reception of the paging message is blocked due to LBT failure or COT failure.
The terminal provided by the embodiment of the invention directly receives the paging message in the public search space configured in the MIB, and can receive the paging message without receiving the SIB1 message, thereby saving the resource configuration of SIB1, reducing the receiving time delay of the paging message, and reducing the probability of blocking the transmission of the paging message due to LBT failure or COT failure.
Fig. 4 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 4, the electronic device may include: a processor (processor)410, a communication Interface 420, a memory (memory)430 and a communication bus 440, wherein the processor 410, the communication Interface 420 and the memory 430 are communicated with each other via the communication bus 440. The processor 410 may invoke computer programs stored on the memory 430 and operable on the processor 410 to perform the methods of NR-U system paging message transmission provided by the above-described method embodiments, including, for example: determining to send a paging message, and sending the paging message and a Synchronization Signal Block (SSB) message carrying a Master Information Block (MIB) message to a terminal in the same time slot, so that the terminal receives the paging message in a public search space configured in the MIB.
The processor 410 may invoke computer programs stored on the memory 430 and operable on the processor 410 to perform the methods of NR-U system paging message transmission provided by the above-described method embodiments, including, for example: receiving a Synchronization Signal Block (SSB) message sent by a base station, and decoding a Master Information Block (MIB) message carried in the SSB message; and receiving a paging message sent by a base station in a public search space configured in the MIB.
In addition, the logic instructions in the memory 430 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
An embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for transmitting the paging message in the NR-U system, which is provided by the foregoing method embodiments, for example, the method includes: determining to send a paging message, and sending the paging message and a Synchronization Signal Block (SSB) message carrying a Master Information Block (MIB) message to a terminal in the same time slot, so that the terminal receives the paging message in a public search space configured in the MIB.
An embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for transmitting the paging message in the NR-U system, which is provided by the foregoing method embodiments, for example, the method includes: receiving a Synchronization Signal Block (SSB) message sent by a base station, and decoding a Master Information Block (MIB) message carried in the SSB message; and receiving a paging message sent by a base station in a public search space configured in the MIB.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for transmitting paging messages in an NR-U system, applied to a base station, includes:
determining to send a paging message, and sending the paging message and a Synchronization Signal Block (SSB) message carrying a Master Information Block (MIB) message to a terminal in the same time slot, so that the terminal receives the paging message in a public search space configured in the MIB.
2. The method for transmitting paging messages in an NR-U system according to claim 1, wherein the paging message and the SSB message carrying the MIB message of the master information block are sent to the terminal in the same timeslot, specifically:
sending the paging message and the SSB message to a terminal in a time division multiplexing mode; or, the paging message and the SSB message are sent to the terminal in a frequency division multiplexing manner.
3. The method for transmitting paging messages in the NR-U system of claim 1, wherein 1bit information in the MIB message is used to indicate whether the terminal needs to receive a paging message in a current timeslot.
4. A method for transmitting paging messages in an NR-U system, applied to a terminal, is characterized by comprising:
receiving a Synchronization Signal Block (SSB) message sent by a base station, and decoding a Master Information Block (MIB) message carried in the SSB message;
and receiving a paging message sent by a base station in a public search space configured in the MIB.
5. The method of claim 4, wherein the mapping relationship between the paging message and the SSB message comprises: the paging message and the SSB message are mapped on different OFDM symbols, or the paging message and the SSB message are multiplexed on a frequency domain.
6. The method for transmitting paging messages in the NR-U system according to claim 4, wherein 1bit information in said MIB message is used to indicate whether a paging message needs to be received at a current slot; correspondingly, receiving a paging message sent by a base station in a public search space configured in the MIB specifically includes:
and if the paging message sent by the base station is determined to be required to be received in the current time slot according to the decoding result of the MIB message, receiving the paging message in a public search space configured in the MIB.
7. A base station, comprising:
and the paging message sending module is used for determining to send a paging message, and sending the paging message and a synchronous signal block SSB message carrying a master information block MIB message to a terminal in the same time slot so that the terminal can receive the paging message in a public search space configured in the MIB.
8. A terminal, comprising:
the MIB decoding module is used for receiving a synchronous signal block SSB message sent by a base station and decoding a master information block MIB message carried in the synchronous signal block SSB message;
and a paging message receiving module, configured to receive, in the public search space configured in the MIB, a paging message sent by a base station.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor, when executing the program, carries out the steps of the method for transmission of paging messages of the NR-U system according to any one of claims 1 to 6.
10. A non-transitory computer readable storage medium, having stored thereon a computer program, which, when being executed by a processor, carries out the steps of the method for transmission of paging messages of an NR-U system according to any of the claims 1 to 6.
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| CN110268640A (en) * | 2017-02-06 | 2019-09-20 | 诺基亚技术有限公司 | Multi-beam paging technique for wireless network |
| CN110612758A (en) * | 2017-05-13 | 2019-12-24 | 高通股份有限公司 | Multiplexing paging signals with synchronization signals in new radios |
| CN109600832A (en) * | 2017-09-30 | 2019-04-09 | 华为技术有限公司 | The transmission method and device of paging message |
| WO2019095121A1 (en) * | 2017-11-14 | 2019-05-23 | Oppo广东移动通信有限公司 | Radio communication method and device |
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Application publication date: 20210706 |