CN111586745A - Measurement information reporting method and related device - Google Patents

Measurement information reporting method and related device Download PDF

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Publication number
CN111586745A
CN111586745A CN201910250794.XA CN201910250794A CN111586745A CN 111586745 A CN111586745 A CN 111586745A CN 201910250794 A CN201910250794 A CN 201910250794A CN 111586745 A CN111586745 A CN 111586745A
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China
Prior art keywords
carrier
measurement information
terminal
downlink channel
channel measurement
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CN201910250794.XA
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Chinese (zh)
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李军
罗之虎
铁晓磊
金哲
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2020/074627 priority Critical patent/WO2020164455A1/en
Publication of CN111586745A publication Critical patent/CN111586745A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • H04W74/006Transmission of channel access control information in the downlink, i.e. towards the terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application discloses a measurement information reporting method and a related device, which are used for expanding the range of downlink channel measurement information which can be referred by a base station and saving sending resources. The method in the embodiment of the application comprises the following steps: the terminal equipment receives a random access response sent by the network equipment on a first carrier; and the terminal equipment sends downlink channel measurement information of at least two carriers to network equipment in a message 3 in a random access process, wherein the at least two carriers comprise the first carrier.

Description

Measurement information reporting method and related device
The present application claims priority of chinese patent application with application number 201910118063.X, entitled "a method for reporting measurement information and related apparatus" filed by chinese patent office in 2019, month 02 and 15, the entire contents of which are incorporated herein by reference.
Technical Field
The embodiment of the application relates to the field of communication, and in particular relates to a method for reporting measurement information and a related device.
Background
In the random access process, after a terminal device sends a random access preamble to a network device, the network device replies a random access response to the terminal device, then the terminal device sends a message 3(msg3) in the random access process to the network device, where the message 3 includes downlink channel measurement information of a carrier used by the terminal device for random access, and then the network device may determine, according to the repetition number indicated by the downlink channel measurement information, the repetition number of sending, by the network device, a fourth message to the terminal device.
In such a scheme, the network device has limited downlink channel measurement information of the carrier, which is not beneficial for the network device to reconfigure the carrier to the terminal device to send data to the terminal device.
Disclosure of Invention
The embodiment of the application provides a measurement information reporting method and a related device, which are used for expanding the range of downlink channel measurement information which can be referred by network equipment and saving sending resources.
In a first aspect, an embodiment of the present application provides a method for reporting measurement information, including: after the terminal device sends the random access preamble to the network device, the terminal device may receive a random access response sent by the network device on the first carrier, and then reply a message 3 of a random access procedure to the network device, where the message 3 includes downlink channel measurement information of at least two carriers, and the at least two carriers include the first carrier.
In this embodiment, when the terminal device sends the downlink channel measurement information to the network device in the message 3 for random access, the downlink channel measurement information of at least two carriers is sent instead of the downlink channel measurement information of one carrier, so that the range of the downlink channel measurement information of the carriers that the network device can refer to is expanded, the network device is favorable for reconfiguring the carriers for the terminal device to send data to the terminal device, and the network device can know the downlink channel quality of the carriers configured for the terminal device to send data to the terminal device.
According to the first aspect, in a first implementation manner of the first aspect of the embodiments of the present application, the at least two carriers include an anchor carrier or a non-anchor carrier for paging the terminal device.
In this embodiment, it is determined that the at least two carriers may include an anchor carrier or a non-anchor carrier for paging the terminal device. Thus, the implementation flexibility of the scheme is increased.
According to the first aspect or the first implementation manner of the first aspect, in a second implementation manner of the first aspect of this embodiment of the present application, the at least two carriers further include a second carrier, where the second carrier is a carrier used by the terminal device to receive or send data before the random access procedure.
In this embodiment, it is clear that, in addition to the first carrier, the at least two carriers may further include a second carrier used by the terminal device to receive or transmit data before the random access procedure. Thus, the implementation flexibility of the scheme is increased.
According to the first aspect, the first implementation manner of the first aspect, or the second implementation manner of the first aspect, in a third implementation manner of the first aspect of the present application, the downlink channel measurement information includes a repetition number.
In this embodiment, specific contents of the downlink channel measurement information are provided, including the number of repetitions. Thus, the feasibility of the solution is enhanced.
According to the first aspect, the first implementation manner of the first aspect, or the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect of the present application, the downlink channel measurement information further includes carrier identification information.
In this embodiment, it is proposed that the downlink channel measurement information may include carrier identification information in addition to the repetition number, so that the network device may distinguish the repetition number corresponding to different carriers according to the carrier identification information. Thus, the feasibility of the solution is improved.
In a second aspect, an embodiment of the present application provides a method for reporting measurement information, including: after receiving the random access preamble sent by the terminal device, the network device may send a random access response to the terminal device on the first carrier, and then receive, in message 3 of a random access procedure, downlink channel measurement information of at least two carriers sent by the terminal device, where the at least two carriers include the first carrier.
In this embodiment, when the terminal device sends the downlink channel measurement information to the network device in the message 3 in the random access process, the downlink channel measurement information of at least two carriers is sent instead of the downlink channel measurement information of one carrier, so that the range of the downlink channel measurement information of the carriers that the network device can refer to is expanded, the network device is facilitated to configure the carriers for the terminal device to send data to the terminal device, and the network device can know the downlink channel quality of the carriers configured for the terminal device to send data to the terminal device.
According to a second aspect, in a first implementation form of the second aspect of an embodiment of the present application, the method further comprises: the network equipment determines at least one of the following according to the downlink channel measurement information of the at least two carriers: the method comprises the steps of configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment, and sending the number of repetitions used by the signaling to the terminal equipment.
In this embodiment, it is clear that the network device may determine, according to the downlink channel measurement information of the at least two carriers, the carrier configured to the terminal device to send data to the terminal device and/or the number of repetitions of sending data to the terminal device according to the evaluation of the downlink channel measurement information of the at least two carriers. Therefore, the network equipment can set the repetition times more reasonably, and further reduce resource waste.
According to the second aspect or the first implementation manner of the second aspect, in a second implementation manner of the second aspect of this embodiment of the present application, the at least two carriers include an anchor carrier or a non-anchor carrier for paging the terminal device.
In this embodiment, it is determined that the at least two carriers may include an anchor carrier or a non-anchor carrier for paging the terminal device. Thus, the implementation flexibility of the scheme is increased.
According to the second aspect, the first implementation manner of the second aspect, or the second implementation manner of the second aspect, in a third implementation manner of the second aspect of the embodiment of the present application, the at least two carriers further include a second carrier, where the second carrier refers to a carrier used by the network device to receive or transmit data of the terminal device before the random access procedure.
In this embodiment, it is clear that the at least two carriers may further include a second carrier used by the network device to receive or transmit data of the terminal device before the random access procedure. Thus, the implementation flexibility of the scheme is increased.
According to the second aspect or any one of the first implementation manner of the second aspect to the third implementation manner of the second aspect, in a fourth implementation manner of the second aspect of the embodiment of the present application, the downlink channel measurement information includes a repetition number.
In this embodiment, specific contents of the downlink channel measurement information are provided, including the number of repetitions. Thus, the feasibility of the solution is enhanced.
According to the second aspect and any one of the first implementation manner of the second aspect to the fourth implementation manner of the second aspect, in a fifth implementation manner of the second aspect of the embodiment of the present application, the downlink channel measurement information further includes carrier identification information.
In this embodiment, it is proposed that the downlink channel measurement information may include carrier identification information in addition to the repetition number, so that the network device may distinguish the repetition number corresponding to different carriers according to the carrier identification information. Thus, the feasibility of the solution is improved.
In a possible embodiment, the number of repetitions in the downlink channel measurement information is referred to as a maximum number of repetitions of a carrier Rmax, where the maximum number of repetitions of different carriers Rmax is different.
In this embodiment, the bit pattern of the repetition times in the uplink channel measurement information reported by the terminal device is further clarified, and the bit pattern of the repetition times can be determined with Rmax as a reference. Also, the maximum number of repetitions Rmax per carrier is typically different for different carriers. Therefore, in such an embodiment, the number of repetitions of reporting can be made more accurate.
In a possible implementation manner, when reporting the downlink channel measurement information of the non-anchor carrier for paging the terminal device, the maximum repetition number Rmax is Rmax of the first type common search space type 1CSS of the non-anchor carrier for paging the terminal device.
In this embodiment, it is further clarified that the terminal device reports the downlink channel measurement information of the non-anchor carrier used for paging the terminal device, and at this time, the maximum repetition number Rmax is Rmax of the first type common search space type 1CSS of the non-anchor carrier used for paging the terminal device. Therefore, the reporting inaccuracy caused by adopting the maximum repetition times Rmax of other carriers as reference when the downlink channel measurement information of the non-anchor carrier for paging the terminal equipment is reported is avoided.
In a possible implementation manner, when the downlink channel measurement information of the anchor carrier is reported, the maximum repetition number Rmax is Rmax of the second type common search space type2CSS corresponding to the coverage level when the random access response is successfully received on the anchor carrier.
In this embodiment, the situation when the terminal device reports the downlink channel measurement information of the anchor carrier is further clarified. Therefore, the reporting inaccuracy caused by adopting the maximum repetition times Rmax of other carriers as reference when the downlink channel measurement information of the anchor carrier is reported is avoided.
In a possible embodiment, when reporting the downlink channel measurement information of the second carrier, the maximum repetition number Rmax is Rmax of the terminal device specific search space USS on the second carrier.
In this embodiment, the situation when the terminal device reports the downlink channel measurement information of the second carrier is further defined. Therefore, the reporting inaccuracy caused by adopting the maximum repetition times Rmax of other carriers as reference when the downlink channel measurement information of the second carrier is reported is avoided.
In a third aspect, an embodiment of the present application provides a terminal device, including: a processor, a memory, a bus, and an input/output device; the processor, the memory and the input/output device are connected with the bus; the memory is used for storing programs; the input/output device is used for receiving a random access response sent by the network device; the processor is configured to determine that downlink channel measurement information of at least two carriers including the carrier for random access is sent to the network device through the input/output device in message 3 of a random access procedure.
In this embodiment of the present application, when the terminal device sends downlink channel measurement information to the network device in message 3 of the random access process, the downlink channel measurement information of at least two carriers is sent instead of the downlink channel measurement information of one carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and thus, the network device has a greater probability of knowing the downlink channel quality of the carrier that the network device configures to the terminal device and is used for sending data to the terminal device, which is beneficial for the network device to reconfigure the carrier to the terminal device to send data to the terminal device, and the network device can know the downlink channel quality of the carrier that the network device configures to the terminal device and is used for sending data to the terminal device.
According to the third aspect, in the first implementation manner of the third aspect of the embodiments of the present application, the at least two carriers include an anchor carrier or a non-anchor carrier for paging the terminal device.
In this embodiment, it is clear that the at least two carriers may include an anchor carrier or a non-anchor carrier for paging the terminal device. Thus, the implementation flexibility of the scheme is increased.
According to the third aspect or the first implementation manner of the third aspect, in a second implementation manner of the third aspect of this embodiment of the present application, the at least two carriers further include a second carrier, where the second carrier is a carrier used by the terminal device to receive or transmit data before the random access procedure.
In this embodiment, it is clear that, in addition to the first carrier, the at least two carriers may further include a second carrier used by the terminal device to receive or transmit data before the random access procedure. Thus, the implementation flexibility of the scheme is increased.
According to the third aspect, the first implementation manner of the third aspect, or the second implementation manner of the third aspect, in a third implementation manner of the third aspect of the present application, the downlink channel measurement information includes a repetition number.
In this embodiment, specific contents of the downlink channel measurement information are provided, including the number of repetitions. Thus, the feasibility of the solution is enhanced.
According to the third aspect, the first implementation manner of the third aspect, or the third implementation manner of the third aspect, in a fourth implementation manner of the third aspect of the present application, the downlink channel measurement information further includes carrier identification information.
In this embodiment, it is proposed that the downlink channel measurement information may include carrier identification information in addition to the repetition number, so that the network device may distinguish the repetition number corresponding to different carriers according to the carrier identification information. Thus, the feasibility of the solution is improved.
In a fourth aspect, an embodiment of the present application provides a network device, including: a processor, a memory, a bus, and an input/output device; the processor, the memory and the input/output device are connected with the bus; the memory is used for storing programs; the input/output device is used for sending a random access response to the terminal device on the first carrier; the processor is configured to determine that downlink channel measurement information of at least two carriers sent by the terminal device is received through the input/output device in message 3 of a random access procedure, where the at least two carriers include the first carrier.
In this embodiment of the present application, when the terminal device sends downlink channel measurement information to the network device in message 3 of the random access process, the downlink channel measurement information of at least two carriers is sent instead of the downlink channel measurement information of one carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and thus, the network device has a greater probability of knowing the downlink channel quality of the carrier that the network device configures to the terminal device and is used for sending data to the terminal device, which is beneficial for the network device to reconfigure the carrier to the terminal device to send data to the terminal device, and the network device can know the downlink channel quality of the carrier that the network device configures to the terminal device and is used for sending data to the terminal device.
According to a fourth aspect, in a first implementation manner of the fourth aspect of this embodiment of the present application, the processor is configured to determine, according to the downlink channel measurement information of the at least two carriers, at least one of the following: the method comprises the steps of configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment, and sending the number of repetitions used by the signaling to the terminal equipment.
In this embodiment, it is clear that the network device may determine, according to the downlink channel measurement information of the at least two carriers, the carrier configured to the terminal device to send data to the terminal device and/or the number of repetitions of sending data to the terminal device according to the evaluation of the downlink channel measurement information of the at least two carriers. Therefore, the network equipment can set the repetition times more reasonably, and further reduce resource waste.
According to the fourth aspect or the first implementation manner of the fourth aspect, in a second implementation manner of the fourth aspect of this embodiment of the present application, the at least two carriers include an anchor carrier or a non-anchor carrier for paging the terminal device.
In this embodiment, it is determined that the at least two carriers may include an anchor carrier or a non-anchor carrier for paging the terminal device. Thus, the implementation flexibility of the scheme is increased.
According to the fourth aspect or any one of the first implementation manner of the fourth aspect to the second implementation manner of the fourth aspect, in a third implementation manner of the fourth aspect of the embodiments of the present application, the at least two carriers further include a second carrier, where the second carrier refers to a carrier used by the network device to receive or transmit data of the terminal device before the random access procedure.
In this embodiment, it is clear that the at least two carriers may include a second carrier that the network device uses to receive or transmit data of the terminal device before the random access procedure. Thus, the implementation flexibility of the scheme is increased.
According to the fourth aspect or any one of the first implementation manner of the fourth aspect to the third implementation manner of the fourth aspect, in the fourth implementation manner of the fourth aspect of the embodiment of the present application, the downlink channel measurement information includes the number of repetitions.
In this embodiment, specific contents of the downlink channel measurement information are provided, including the number of repetitions. Thus, the feasibility of the solution is enhanced.
According to the fourth aspect and any one of the first implementation manner of the fourth aspect to the fourth implementation manner of the fourth aspect, in a fifth implementation manner of the fourth aspect of the embodiment of the present application, the downlink channel measurement information further includes carrier identification information.
In this embodiment, it is proposed that the downlink channel measurement information may include carrier identification information in addition to the repetition number, so that the network device may distinguish the repetition number corresponding to different carriers according to the carrier identification information. Thus, the feasibility of the solution is improved.
In a fifth aspect, a method for reporting measurement information includes: the terminal equipment receives a message 4 of a random access process sent by network equipment on a first carrier; in response to the message 4, the terminal device sends downlink channel measurement information of at least one carrier to the network device.
In the embodiment of the present application, after receiving the message 4, the terminal device sends the downlink channel measurement information of at least one carrier to the network device. Therefore, the network device can obtain at least the downlink channel measurement information of the first carrier and the downlink channel measurement information of the other carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and the network device is favorable for reconfiguring the carrier for the terminal device so as to send data to the terminal device. In addition, the downlink channel measurement information of the two carriers is separately sent, which is beneficial to saving the signaling load in the current random access process.
According to a fifth aspect of the first implementation form of the fifth aspect of this embodiment, the at least one carrier does not comprise the first carrier.
According to the fifth aspect or the first implementation manner of the fifth aspect, in a second implementation manner of the fifth aspect of this embodiment of the present application, before the terminal device receives the message 4 of the random access procedure sent by the network device on the first carrier, the method further includes: the terminal equipment sends the downlink channel measurement information of the first carrier to the network equipment in the message 3 of the random access process.
In this embodiment, the terminal device sends the downlink channel measurement information of the first carrier to the network device in the message 3 for random access, so that it is beneficial for the network device to send the message 4 to the terminal device with reference to the downlink channel measurement information of the first carrier. Since the terminal device sends the downlink channel measurement information of at least one carrier to the network device after receiving the message 4. Therefore, the network device can obtain at least the downlink channel measurement information of the first carrier and the downlink channel measurement information of the other carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and the network device is favorable for reconfiguring the carrier for the terminal device so as to send data to the terminal device. In addition, the downlink channel measurement information of the two carriers is separately sent, which is beneficial to saving the signaling load in the current random access process.
According to a fifth aspect, in a second implementation form of the fifth aspect of this embodiment of the present application, the at least one carrier comprises the first carrier.
According to the fifth aspect or any one of the first implementation manner of the fifth aspect to the second implementation manner of the fifth aspect, in a third implementation manner of the fifth aspect of the embodiments of the present application, the at least one carrier includes an anchor carrier or a non-anchor carrier used for paging the terminal device.
In this embodiment, it is clear that the at least one carrier may include an anchor carrier or a non-anchor carrier for paging the terminal device. Thus, the implementation flexibility of the scheme is increased.
According to the fifth aspect or any one of the first implementation manner to the third implementation manner of the fifth aspect, in a fourth implementation manner of the fifth aspect of the embodiments of the present application, the at least one carrier includes a second carrier, and the second carrier is a carrier used by the terminal device to receive or transmit data before the random access procedure.
In this embodiment, it is clear that, in addition to the first carrier, the at least one carrier may further include a second carrier used by the terminal device to receive or transmit data before the random access procedure. Thus, the implementation flexibility of the scheme is increased.
According to the fifth aspect, the first implementation manner of the fifth aspect, or the fourth implementation manner of the fifth aspect, in a fifth implementation manner of the fifth aspect of the present embodiment, the downlink channel measurement information includes a repetition number.
In this embodiment, specific contents of the downlink channel measurement information are provided, including the number of repetitions. Thus, the feasibility of the solution is enhanced.
According to the fifth aspect, the first implementation manner of the fifth aspect, or the fifth implementation manner of the fifth aspect, in a sixth implementation manner of the fifth aspect of the embodiment of the present application, the downlink channel measurement information further includes carrier identification information.
In this embodiment, it is proposed that the downlink channel measurement information may include carrier identification information in addition to the repetition number, so that the network device may distinguish the repetition number corresponding to different carriers according to the carrier identification information. Thus, the feasibility of the solution is improved.
In a sixth aspect, a method for reporting measurement information includes: the network equipment sends a message 4 of a random access process to the terminal equipment on a first carrier wave; the network equipment receives downlink channel measurement information of at least one carrier wave sent by the terminal equipment.
In the embodiment of the present application, after the network device sends the message 4, the network device receives downlink channel measurement information of at least one carrier sent by the terminal device. Therefore, the network device can obtain at least the downlink channel measurement information of the first carrier and the downlink channel measurement information of the other carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and the network device is favorable for reconfiguring the carrier for the terminal device so as to send data to the terminal device. In addition, the downlink channel measurement information of the two carriers is separately sent, which is beneficial to saving the signaling load in the current random access process.
According to a sixth aspect of the first implementation form of the sixth aspect of this embodiment, the at least one carrier does not comprise the first carrier.
According to the sixth aspect or the first implementation manner of the sixth aspect, in a second implementation manner of the sixth aspect of this embodiment of the present application, before the network device sends the message 4 of the random access procedure to the terminal device on the first carrier, the method further includes: the network device receives the downlink channel measurement information of the first carrier wave sent by the terminal device in the message 3 of the random access process.
In this embodiment, the terminal device sends the downlink channel measurement information of the first carrier to the network device in the message 3 for random access, so that it is beneficial for the network device to send the message 4 to the terminal device with reference to the downlink channel measurement information of the first carrier. Since the terminal device sends the downlink channel measurement information of at least one carrier to the network device after receiving the message 4. Therefore, the network device can obtain at least the downlink channel measurement information of the first carrier and the downlink channel measurement information of the other carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and the network device is favorable for reconfiguring the carrier for the terminal device so as to send data to the terminal device. In addition, the downlink channel measurement information of the two carriers is separately sent, which is beneficial to saving the signaling load in the current random access process.
According to a sixth aspect of a second implementation form of the sixth aspect of this embodiment of the present application, the at least one carrier comprises the first carrier.
According to the sixth aspect or any one of the first implementation manner to the second implementation manner of the sixth aspect, in a third implementation manner of the sixth aspect of the embodiments of the present application, the at least one carrier includes an anchor carrier or a non-anchor carrier used for paging the terminal device.
In this embodiment, it is clear that the at least one carrier may include an anchor carrier or a non-anchor carrier for paging the terminal device. Thus, the implementation flexibility of the scheme is increased.
According to the sixth aspect or any one of the first implementation manner to the third implementation manner of the sixth aspect, in a fourth implementation manner of the sixth aspect of this embodiment of the present application, the at least one carrier includes a second carrier, and the second carrier is a carrier used by the network device to receive or transmit data of the terminal device before the random access procedure.
In this embodiment, it is clear that the at least one carrier may include, in addition to the first carrier, a second carrier that is used by the network device to receive or transmit data of the terminal device before the random access procedure. Thus, the implementation flexibility of the scheme is increased.
According to the sixth aspect, the first implementation manner of the sixth aspect, or the fourth implementation manner of the sixth aspect, in a fifth implementation manner of the sixth aspect of the present application, the downlink channel measurement information includes a repetition number.
In this embodiment, specific contents of the downlink channel measurement information are provided, including the number of repetitions. Thus, the feasibility of the solution is enhanced.
According to the sixth aspect, the first implementation manner of the sixth aspect, or the fifth implementation manner of the sixth aspect, in a sixth implementation manner of the sixth aspect of this embodiment of the present application, the downlink channel measurement information further includes carrier identification information.
In this embodiment, it is proposed that the downlink channel measurement information may include carrier identification information in addition to the repetition number, so that the network device may distinguish the repetition number corresponding to different carriers according to the carrier identification information. Thus, the feasibility of the solution is improved.
According to the sixth aspect, the first implementation manner of the sixth aspect, or the fifth implementation manner of the sixth aspect, in a seventh implementation manner of the sixth aspect of the embodiment of the present application, the network device determines, according to the downlink channel measurement information of the at least one carrier, at least one of the following: the method comprises the steps of configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment, and sending the number of repetitions used by the signaling to the terminal equipment.
In a possible embodiment, the number of repetitions in the downlink channel measurement information is referred to as a maximum number of repetitions of a carrier Rmax, where the maximum number of repetitions of different carriers Rmax is different.
In this embodiment, the bit pattern of the repetition times in the uplink channel measurement information reported by the terminal device is further clarified, and the bit pattern of the repetition times can be determined with Rmax as a reference. Also, the maximum number of repetitions Rmax per carrier is typically different for different carriers. Therefore, in such an embodiment, the number of repetitions of reporting can be made more accurate.
In a possible implementation manner, when reporting the downlink channel measurement information of the non-anchor carrier for paging the terminal device, the maximum repetition number Rmax is Rmax of the first type common search space type 1CSS of the non-anchor carrier for paging the terminal device.
In this embodiment, it is further clarified that the terminal device reports the downlink channel measurement information of the non-anchor carrier used for paging the terminal device, and at this time, the maximum repetition number Rmax is Rmax of the first type common search space type 1CSS of the non-anchor carrier used for paging the terminal device. Therefore, the reporting inaccuracy caused by adopting the maximum repetition times Rmax of other carriers as reference when the downlink channel measurement information of the non-anchor carrier for paging the terminal equipment is reported is avoided.
In a possible implementation manner, when the downlink channel measurement information of the anchor carrier is reported, the maximum repetition number Rmax is Rmax of the second type common search space type2CSS corresponding to the coverage level when the random access response is successfully received on the anchor carrier.
In this embodiment, the situation when the terminal device reports the downlink channel measurement information of the anchor carrier is further clarified. Therefore, the reporting inaccuracy caused by adopting the maximum repetition times Rmax of other carriers as reference when the downlink channel measurement information of the anchor carrier is reported is avoided.
In a possible embodiment, when reporting the downlink channel measurement information of the second carrier, the maximum repetition number Rmax is Rmax of the terminal device specific search space USS on the second carrier.
In this embodiment, the situation when the terminal device reports the downlink channel measurement information of the second carrier is further defined. Therefore, the reporting inaccuracy caused by adopting the maximum repetition times Rmax of other carriers as reference when the downlink channel measurement information of the second carrier is reported is avoided.
In a seventh aspect, an embodiment of the present application provides a communication apparatus, which may be a terminal device, or may be a structure or an apparatus, such as a chip, a chip system, a circuit system, or the like, provided in the terminal device, where the communication apparatus includes at least one processor, where the at least one processor is configured to couple with a memory, read and execute instructions in the memory, so as to implement receiving, on a first carrier, a message 4 of a random access procedure sent by a network device; and, in response to the message 4, sending downlink channel measurement information of at least one carrier to the network device.
In the embodiment of the present application, after receiving the message 4, the terminal device sends the downlink channel measurement information of at least one carrier to the network device. Therefore, the network device can obtain at least the downlink channel measurement information of the first carrier and the downlink channel measurement information of the other carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and the network device is favorable for reconfiguring the carrier for the terminal device so as to send data to the terminal device. In addition, the downlink channel measurement information of the two carriers is separately sent, which is beneficial to saving the signaling load in the current random access process.
According to a seventh aspect, in the first implementation manner of the seventh aspect of this embodiment of the present application, the at least one carrier does not include the first carrier.
According to the seventh aspect or the first implementation manner of the seventh aspect, in the second implementation manner of the seventh aspect of this embodiment, the communication device may further include the memory, wherein the processor is coupled with the memory, and the processor may read instructions in the memory to implement the functions of the processor. The communication apparatus may further include a transceiver configured to support the communication apparatus to perform signaling or data reception or transmission, for example, the terminal device sends downlink channel measurement information of the first carrier to the network device in message 3 of the random access procedure.
In this embodiment, the terminal device sends the downlink channel measurement information of the first carrier to the network device in the message 3 for random access, so that it is beneficial for the network device to send the message 4 to the terminal device with reference to the downlink channel measurement information of the first carrier. Since the terminal device sends the downlink channel measurement information of at least one carrier to the network device after receiving the message 4. Therefore, the network device can obtain at least the downlink channel measurement information of the first carrier and the downlink channel measurement information of the other carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and the network device is favorable for reconfiguring the carrier for the terminal device so as to send data to the terminal device. In addition, the downlink channel measurement information of the two carriers is separately sent, which is beneficial to saving the signaling load in the current random access process.
According to a seventh aspect, in a second implementation manner of the seventh aspect of this embodiment of the present application, the at least one carrier includes the first carrier.
According to the seventh aspect, or any one of the first implementation manner to the second implementation manner of the seventh aspect, in a third implementation manner of the seventh aspect of this embodiment of the present application, the at least one carrier includes an anchor carrier or a non-anchor carrier used for paging the terminal device.
In this embodiment, it is clear that the at least one carrier may include an anchor carrier or a non-anchor carrier for paging the terminal device. Thus, the implementation flexibility of the scheme is increased.
According to the seventh aspect, or any one of the first implementation manner to the third implementation manner of the seventh aspect, in a fourth implementation manner of the seventh aspect of this embodiment of the present application, the at least one carrier includes a second carrier, and the second carrier is a carrier used by the terminal device for receiving or transmitting data before the random access procedure.
In this embodiment, it is clear that, in addition to the first carrier, the at least one carrier may further include a second carrier used by the terminal device to receive or transmit data before the random access procedure. Thus, the implementation flexibility of the scheme is increased.
According to the seventh aspect, the first implementation manner of the seventh aspect, or the fourth implementation manner of the seventh aspect, in a fifth implementation manner of the seventh aspect of this embodiment of the present application, the downlink channel measurement information includes a repetition number.
In this embodiment, specific contents of the downlink channel measurement information are provided, including the number of repetitions. Thus, the feasibility of the solution is enhanced.
According to the seventh aspect, the first implementation manner of the seventh aspect, or the fifth implementation manner of the seventh aspect, in a sixth implementation manner of the seventh aspect of this embodiment of the present application, the downlink channel measurement information further includes carrier identification information.
In this embodiment, it is proposed that the downlink channel measurement information may include carrier identification information in addition to the repetition number, so that the network device may distinguish the repetition number corresponding to different carriers according to the carrier identification information. Thus, the feasibility of the solution is improved.
According to a seventh implementation manner of the seventh aspect, the first implementation manner of the seventh aspect, or the fifth implementation manner of the seventh aspect, in the seventh implementation manner of the seventh aspect of the embodiment of the present application, the communication device further includes the memory.
In an eighth aspect, an embodiment of the present application provides a communication apparatus, which may be a network device, or a structure or an apparatus, such as a chip, a chip system, a circuit system, or the like, provided in a network device, and the communication apparatus includes at least one processor, where the at least one processor is configured to couple with a memory, read and execute instructions in the memory, so as to implement sending a message 4 of a random access procedure to a terminal device on a first carrier; and receiving downlink channel measurement information of at least one carrier wave sent by the terminal equipment.
In the embodiment of the present application, after the network device sends the message 4, the network device receives downlink channel measurement information of at least one carrier sent by the terminal device. Therefore, the network device can obtain at least the downlink channel measurement information of the first carrier and the downlink channel measurement information of the other carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and the network device is favorable for reconfiguring the carrier for the terminal device so as to send data to the terminal device. In addition, the downlink channel measurement information of the two carriers is separately sent, which is beneficial to saving the signaling load in the current random access process.
According to an eighth aspect of the present application, in a first implementation form of the eighth aspect, the at least one carrier does not include the first carrier.
According to the eighth aspect or the first implementation manner of the eighth aspect, in the second implementation manner of the eighth aspect of the embodiments of the present application, the communication device may further include the memory, wherein the processor is coupled to the memory, and the processor may read instructions in the memory to implement functions of the processor. The above communication apparatus may further include a transceiver configured to support the communication apparatus for receiving or transmitting signaling or data, for example, before the network device sends the message 4 of the random access procedure to the terminal device on the first carrier, the method further includes: the network device receives the downlink channel measurement information of the first carrier wave sent by the terminal device in the message 3 of the random access process.
In this embodiment, the terminal device sends the downlink channel measurement information of the first carrier to the network device in the message 3 for random access, so that it is beneficial for the network device to send the message 4 to the terminal device with reference to the downlink channel measurement information of the first carrier. Since the terminal device sends the downlink channel measurement information of at least one carrier to the network device after receiving the message 4. Therefore, the network device can obtain at least the downlink channel measurement information of the first carrier and the downlink channel measurement information of the other carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and the network device is favorable for reconfiguring the carrier for the terminal device so as to send data to the terminal device. In addition, the downlink channel measurement information of the two carriers is separately sent, which is beneficial to saving the signaling load in the current random access process.
According to an eighth aspect of the second implementation form of the eighth aspect of this embodiment of the present application, the at least one carrier comprises the first carrier.
According to the eighth aspect or any one of the first implementation manner to the second implementation manner of the eighth aspect, in a third implementation manner of the eighth aspect of the embodiment of the present application, the at least one carrier includes an anchor carrier or a non-anchor carrier for paging the terminal device.
In this embodiment, it is clear that the at least one carrier may include an anchor carrier or a non-anchor carrier for paging the terminal device. Thus, the implementation flexibility of the scheme is increased.
According to the eighth aspect or any one of the first implementation manner to the third implementation manner of the eighth aspect, in a fourth implementation manner of the eighth aspect of the embodiment of the present application, the at least one carrier includes a second carrier, and the second carrier is a carrier used by the network device to receive or transmit data of the terminal device before the random access procedure.
In this embodiment, it is clear that the at least one carrier may include, in addition to the first carrier, a second carrier that is used by the network device to receive or transmit data of the terminal device before the random access procedure. Thus, the implementation flexibility of the scheme is increased.
According to the eighth aspect, the first implementation manner of the eighth aspect, or the fourth implementation manner of the eighth aspect, in a fifth implementation manner of the eighth aspect of the present application, the downlink channel measurement information includes a repetition number.
In this embodiment, specific contents of the downlink channel measurement information are provided, including the number of repetitions. Thus, the feasibility of the solution is enhanced.
According to the eighth aspect, the first implementation manner of the eighth aspect, or the fifth implementation manner of the eighth aspect, in a sixth implementation manner of the eighth aspect of the embodiment of the present application, the downlink channel measurement information further includes carrier identification information.
In this embodiment, it is proposed that the downlink channel measurement information may include carrier identification information in addition to the repetition number, so that the network device may distinguish the repetition number corresponding to different carriers according to the carrier identification information. Thus, the feasibility of the solution is improved.
In an eighth aspect, the first implementation manner of the eighth aspect, or the fifth implementation manner of the eighth aspect, in a seventh implementation manner of the eighth aspect of the embodiments of the present application, the communication device further includes the memory.
In a ninth aspect, the present application provides a communication system, which is characterized by comprising the communication apparatus according to the third aspect and the communication apparatus according to the fourth aspect.
In a tenth aspect, an embodiment of the present application provides a communication system, which is characterized by including the communication apparatus according to the seventh aspect and the communication apparatus according to the eighth aspect.
In an eleventh aspect, embodiments of the present application provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method as described in the first aspect or the second aspect.
In a twelfth aspect, embodiments of the present application provide a computer program product containing instructions that, when run on a computer, cause the computer to perform the method as described in the first or second aspect.
In a thirteenth aspect, embodiments of the present application provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the method as described in the fifth aspect or the sixth aspect.
In a fourteenth aspect, embodiments of the present application provide a computer program product containing instructions which, when run on a computer, cause the computer to perform the method as described in the fifth or sixth aspect.
According to the technical scheme, the embodiment of the application has the following advantages:
in this embodiment of the present application, when the terminal device sends the downlink channel measurement information to the network device in the message 3 for random access, the downlink channel measurement information of at least two carriers is sent instead of the downlink channel measurement information of one carrier, so that the range of the downlink channel measurement information of the carrier that the network device can refer to is expanded, and thus the network device has a greater probability of knowing the downlink channel quality of the carrier that the network device configures to the terminal device and is used for sending data to the terminal device, which is beneficial for the network device to reconfigure the carrier to the terminal device to send data to the terminal device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present application.
Fig. 1 is a flowchart of a measurement information reporting method in an embodiment of the present application;
fig. 2A is a schematic diagram of an embodiment of a method for reporting measurement information in an embodiment of the present application;
fig. 2B is a schematic diagram of another embodiment of a method for reporting measurement information in the embodiment of the present application;
fig. 2C is a schematic diagram of another embodiment of a method for reporting measurement information in the embodiment of the present application;
fig. 2D is a schematic diagram of another embodiment of a method for reporting measurement information in the embodiment of the present application;
fig. 3A is a schematic diagram of another embodiment of a method for reporting measurement information in an embodiment of the present application;
fig. 3B is a schematic diagram of another embodiment of a method for reporting measurement information in the embodiment of the present application;
fig. 4 is another flowchart of a measurement information reporting method in an embodiment of the present application;
fig. 5A is a schematic diagram of another embodiment of a method for reporting measurement information in an embodiment of the present application;
fig. 5B is a schematic diagram of another embodiment of a method for reporting measurement information in the embodiment of the present application;
fig. 6 is another flowchart of a measurement information reporting method in an embodiment of the present application;
FIG. 7 is a schematic diagram of an embodiment of a terminal device in the embodiment of the present application;
fig. 8 is a schematic diagram of an embodiment of a base station in the embodiment of the present application.
Detailed Description
The embodiment of the application provides a measurement information reporting method and a related device, which are used for expanding the range of downlink channel measurement information which can be referred by a base station and saving sending resources.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Some terms referred to in the embodiments of the present application are described below:
narrowband Internet of things (NB-IoT): the narrowband internet of things can be directly deployed in a global system for mobile communications (GSM) network, a Universal Mobile Telecommunications System (UMTS) network or a Long Term Evolution (LTE) network, so as to reduce deployment cost and realize smooth upgrade.
The number of repetitions: the number of repetitions refers to the number of times when the network device repeatedly transmits data to the terminal device in order to ensure that the data can be received by the terminal device. In this embodiment, the number of repetitions set by the network device is recommended when the terminal device receives data sent by the network device on a certain carrier, where the repetitions are obtained by measuring the certain carrier. That is, when the network device receives the repetition number in the downlink channel measurement information sent by the terminal device, the network device may refer to the repetition number in the downlink channel measurement information and other information in the downlink channel measurement information, and then determine the carrier configured for the terminal device and the repetition number of sending data on the configured carrier.
Anchor carrier (anchor carrier): in Frequency Division Duplexing (FDD)
The carrier refers to a carrier transmitting a primary synchronization signal (NPSS)/secondary synchronization signal (NSSS)/Narrowband Physical Broadcast Channel (NPBCH)/SIB-NB; in Time Division Duplex (TDD), a carrier for transmitting NPSS/NSSS/NPBCH is referred to.
Non-anchor carrier (non-anchor carrier): in FDD, the carrier does not transmit NPSS/NSSS/NPBCH/SIB-NB; in TDD, it refers to a carrier that does not transmit NPSS/NSSS/NPBCH.
Narrowband Physical Downlink Control Channel (NPDCCH): the ue is configured to carry Downlink Control Information (DCI), or carry resource allocation and other control information of one or more terminal devices.
Reference Signal Receiving Quality (RSRQ): refers to a metric that ranks different candidate cells according to signal quality, which may be used as input for handover and cell reselection decisions.
A first carrier: in the embodiments of the present application, a carrier receiving a random access response is referred to.
A second carrier wave: in the embodiment of the present application, the carrier configured by the network device to the terminal device before the random access process is referred to. The second carrier may be the first carrier, may also be an anchor carrier, and may also be a non-anchor carrier for paging the terminal device, which is not limited herein.
The following introduces a network architecture to which the embodiments of the present application are applicable:
the scheme provided by the embodiment of the application is mainly applied to a narrowband Internet of things NB-IoT architecture. Under the architecture, the terminal device may initiate random access on an anchor carrier or a non-anchor carrier to acquire uplink resources from the base station, so as to perform data transmission between the terminal device and the base station. In the process of the random access, the terminal device may perform random access on an anchor carrier and 15 non-anchor carriers configured by SIB2-NB (System Information Block Type2-NB) or SIB22-NB (System Information Block Type 22-NB). In the random access process, the terminal device may send downlink channel measurement information of a carrier to the base station by msg3, so that the base station determines a configured carrier and a repetition number corresponding to the configured carrier after referring to the downlink channel measurement information.
The method for reporting measurement information in this embodiment may be applicable to the network architecture, and may also be applicable to other network architectures, which is not limited herein.
In embodiments of the present application, the terminal device includes a device for providing voice and/or data connectivity to a user, and may include, for example, a handheld device having a wireless connection function or a processing device connected to a wireless modem. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an Access Point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), or a user equipment (user device). For example, mobile phones (or so-called "cellular" phones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included or vehicle-mounted mobile devices, smart wearable devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like.
By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets, smart helmets, smart jewelry and the like for monitoring physical signs.
The terminal in the embodiment of the present application may be any one of the above devices or chips, and is not limited herein. The terminal, whether as a device or a chip, may be manufactured, sold or used as a stand-alone product. In this embodiment and the following embodiments, only the terminal is taken as an example for description.
In the embodiments of the present application, the network device, for example, including a base station (e.g., an access point), may refer to a device in an access network that communicates over the air interface with wireless terminal devices through one or more cells. The network device may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB or eNB or e-NodeB) in a Long Term Evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-a), or may also include a next generation Node B (gNB) in a fifth generation mobile communication technology (5G) New Radio (NR) system, or may also include a Centralized Unit (CU) and a distributed unit (distributed Node, DU) in a cloud access network (cloudlan) system, which is not limited in the embodiments of the present application.
The network device in the embodiment of the present application may be any one of the above devices or chips, and is not limited herein. The network device, whether as a device or as a chip, may be manufactured, sold, or otherwise used as a stand-alone product. In this embodiment and the following embodiments, only the base station is taken as an example for description.
To better understand the solution proposed in the embodiment of the present application, a specific procedure in the embodiment is described below, as shown in fig. 1, where the steps executed by the terminal and the base station in the measurement information reporting method when the terminal is in an idle state include:
101. the terminal sends a random access lead code to the base station;
in this embodiment, before performing random access, the terminal may receive a system message sent by the base station, where the system message includes a Narrowband Reference Signal Received Power (NRSRP) threshold, and the terminal may determine a coverage enhancement level (CE) according to the NRSRP threshold.
For ease of understanding, reference is made to the following description in connection with specific examples. It is assumed that the NRSRP threshold includes two NRSRP thresholds, which are a first NRSRP threshold and a second NRSRP threshold. Wherein the second NRSRP threshold may be less than the first NRSRP threshold. If the NRSRP measured by the terminal is less than the second NRSRP threshold, the terminal is in a coverage level 2; if the NRSRP measured by the terminal is greater than or equal to the second NRSRP threshold and less than the first NRSRP threshold, the terminal is in a coverage level 1; if the NRSRP value measured by the terminal is greater than or equal to the first NRSRP threshold, the terminal is in coverage level 0. Generally, a terminal closer to a base station may be considered as being in coverage level 0, which may be understood as "normal coverage", and at this time, data transmission may not need to be repeated; a terminal farther from the base station may be considered as being in coverage level 1, which may be understood as "edge coverage", where the number of repetitions of data transmission may be 8 or 16; a terminal in a scenario such as a basement may be considered as "extended coverage" when the coverage level is 2, and the number of repetitions of data transmission may reach 32 times or 64 times, or even higher.
The system message may further include configuration information of NPRACH, where each coverage level may correspond to configuration information of one NPRACH. The configuration information of NPRACH may specifically include a maximum number of repetitions of a search space for random access Rmax, a start position G, and an offset. The search space for random access may also be referred to as a second type common search space (type 2 CSS). For ease of understanding, it is assumed that there are 3 coverage levels, e.g., coverage level 0, coverage level 1, and coverage level 2. At this time, the coverage level 0 corresponds to Rmax of one type2CSS, for example, Rmax _ CE 0; the coverage level 1 corresponds to Rmax of another type2CSS, for example, Rmax _ CE 1; coverage level 3 also corresponds to Rmax of a type2CSS, e.g., Rmax _ CE 2. Taking the anchor carrier as an example, the anchor carrier may correspond to the maximum repetition times Rmax of 3 different type2 CSSs. Specifically, see tables 1-1:
TABLE 1-1
Coverage grade CE2 CE1 CE0
Anchor carrier Rmax_CE2 Rmax_CE1 Rmax_CE0
In this embodiment, after the terminal receives the system message sent by the base station, the terminal may store the system message for subsequent use.
In this embodiment, before the terminal device performs random access, the terminal device may measure an NRSRP value on an anchor carrier. As can be seen from the foregoing steps, the terminal may determine a coverage level, such as CE0, based on the NRSRP value measured by the terminal device and the NRSRP threshold sent by the base station to the terminal. The terminal then randomly selects one carrier, e.g., carrier a. At this time, the terminal may transmit the random access preamble with NPRACH configuration corresponding to CE0 on carrier a, and the terminal may determine Rmax of type2CSS corresponding to CE0 on carrier a. If the access of the terminal fails at the coverage level, for example, the number of failure times of preamble transmission exceeds a threshold, the terminal may perform random access at the next coverage level, for example, at CE1, and at this time, the terminal may use the Type2CSS corresponding to CE 1.
In this embodiment, when the terminal has uplink data to be transmitted or has other requirements, the terminal may randomly select one uplink carrier to send the random access preamble, and then receive the random access response on the corresponding downlink carrier. The terminal may select an anchor carrier as a carrier for receiving the random access response sent by the base station, or may select a non-anchor carrier as a carrier for receiving the random access response sent by the base station, which is not limited herein. For convenience of understanding, as shown in fig. 2A to 2D, the present embodiment is described by taking an example that the terminal selects a non-anchor carrier as a carrier for receiving a random access response sent by the base station. At this point, the terminal will send a random access preamble, i.e., msg1 shown in fig. 2A-2D, to the base station on the uplink non-anchor carrier.
For convenience of introduction, in this embodiment and subsequent embodiments, the non-anchor carrier receiving the random access response is referred to as a downlink non-anchor carrier a for random access. It should be understood that the downlink non-anchor carrier a for random access may be any one of 15 downlink carriers configured in the SIB22-NB, and thus, the carrier selected by the terminal for random access at a time may not be the same carrier.
102. The terminal receives a random access response sent by the base station on a first carrier;
in this embodiment, after the terminal sends a random access preamble to the base station, and the terminal has determined to receive a random access response through the downlink non-anchor carrier a for random access, the base station replies a random access response to the terminal on the downlink non-anchor carrier a for random access, where the random access response is msg2 shown in fig. 2A to 2D.
103. The terminal sends downlink channel measurement information of at least two carriers to the base station in a message 3 in a random access process, wherein the at least two carriers comprise a first carrier;
in this embodiment, after the terminal receives the random access response sent by the base station, the terminal may measure the downlink channel measurement information of the downlink non-anchor carrier a for random access, and of course, the terminal may also measure the downlink channel measurement information of the downlink non-anchor carrier a for random access before the base station replies the random access response to the terminal, which is not limited herein. The carrier used for random access may specifically refer to a downlink carrier used for random access, i.e., a carrier where msg2 is located.
In addition, the terminal may also measure downlink channel measurement information of a downlink anchor carrier and downlink channel measurement information of a downlink non-anchor carrier B used for paging the terminal, and specifically, the downlink non-anchor carrier B used for paging the terminal is calculated by the terminal according to the identification information of the terminal, so that the base station may send a paging message to the terminal through the downlink non-anchor carrier B used for paging the terminal at a specific time to notify the terminal to perform a corresponding operation or update a related parameter. In addition, since the downlink channel measurement information of the downlink non-anchor carrier B for paging the terminal is determined by the terminal in the paging phase, the terminal may not need to measure the downlink channel measurement information of the downlink non-anchor carrier B for paging the terminal again, and therefore, the measurement of the terminal may not be increased. The reason why the terminal measures the anchor carrier is that the terminal in an idle state needs to perform RRM (radio resource management) measurement on the anchor carrier.
Then, when the terminal replies msg3 to the base station, the terminal sends downlink channel measurement information of at least two carriers to the base station in msg3 of the random access process, where the at least two carriers include the first carrier, and the first carrier is a carrier that receives a random access response, that is, a downlink non-anchor carrier a for random access in fig. 2A to 2D, and still taking fig. 2A to 2D as an example, the terminal sends downlink channel measurement information of at least two carriers to the base station, where the downlink channel measurement information of the at least two carriers includes downlink channel measurement information of the downlink non-anchor carrier a for random access in fig. 2A to 2D. In addition, when the terminal is in an idle state, the downlink channel measurement information of the at least two carriers may further include downlink channel measurement information of a downlink non-anchor carrier B used for paging the terminal and downlink channel measurement information of an anchor carrier.
It should be understood that the terminal may filter the downlink channel measurement information of at least two carriers before sending the downlink channel measurement information to the base station. For example, the downlink channel measurement information that the terminal has measured and can send is: the downlink channel measurement information of the downlink non-anchor carrier A used for random access, the downlink channel measurement information of the downlink non-anchor carrier B used for paging the terminal, and the downlink channel measurement information of the anchor carrier. When the quality of the downlink channel of the downlink non-anchor carrier a and the quality of the downlink channel of the anchor carrier for random access are far better than the quality of the downlink channel of the downlink non-anchor carrier B for paging the terminal, the terminal may only send the downlink channel measurement information of the downlink non-anchor carrier a and the downlink channel measurement information of the anchor carrier for random access. Similarly, if the quality of the downlink channel of the downlink non-anchor carrier B used for paging the terminal is better than that of the anchor carrier, only the downlink channel measurement information of the downlink non-anchor carrier a used for random access and the downlink channel measurement information of the downlink non-anchor carrier B used for paging the terminal may be sent.
For convenience of understanding, the quality of the downlink channel measurement information may be distinguished by the size of the repetition number, for example, if the repetition number of the downlink non-anchor carrier a used for random access is 8, the repetition number of the anchor carrier is 8, and the repetition number of the downlink non-anchor carrier B used for paging the terminal is 16, it may be determined that the quality of the downlink channel of the downlink non-anchor carrier a used for random access and the quality of the downlink channel of the anchor carrier are far better than the quality of the downlink channel of the downlink non-anchor carrier B used for paging the terminal. The number of repetitions will be described in detail later, and will not be described in detail here. In addition, other indicators may also reflect the quality of the downlink channel measurement information, such as signal-to-noise ratio and reference signal received quality RSRQ, and the like, which is not limited herein.
Furthermore, it should be noted that when the carrier for random access is an anchor carrier, as shown in fig. 3A and 3B, at this time, only the downlink channel measurement information of the anchor carrier and the downlink non-anchor carrier B for paging the terminal may be in the msg 3.
In addition, the terminal sends downlink channel measurement information of a downlink non-anchor carrier for paging the terminal to the base station, and may further include that when the base station and the terminal both support no paging message and a narrowband downlink reference signal (NRS) also exists before a Paging Occasion (PO), the terminal sends the downlink channel measurement information of the downlink non-anchor carrier for paging the terminal to the base station.
In this embodiment, the downlink channel measurement information includes the number of repetitions. The number of repetitions refers to the number of times when the base station repeatedly transmits data to the terminal in order to ensure that the data transmitted to the terminal can be received by the terminal. In this embodiment, the number of repetitions set by the base station is recommended when the terminal receives data transmitted by the base station on a certain carrier, where the repetitions are obtained by measuring the certain carrier. That is, when the base station receives the repetition number in the downlink channel measurement information sent by the terminal, the base station may refer to the repetition number in the downlink channel measurement information and other information in the downlink channel measurement information, and then the base station determines the carrier configured for the terminal and the repetition number of data sent on the configured carrier.
More specifically, the repetition number is the repetition number of the NPDCCH, or the minimum repetition number of the NPDCCH, and it is satisfied that when the transmission parameter of the NPDCCH is shown in table 1-2, or when the transmission parameter of the NPDCCH sent by the base station is assumed to be shown in table 1-2 by the terminal, the block error rate (BLER) of the NPDCCH may reach 1%.
Tables 1 to 2
Figure BDA0002012345090000181
It should be understood that the number of repetitions may be represented by a plurality of bits. For example, 2 bits indicate that "00" indicates that no measurement is performed, "01" indicates that the number of repetitions is 8, "10" indicates that the number of repetitions is 16, and "11" indicates that the number of repetitions is 32. In practical applications, the adjustment can be properly performed according to specific situations, and the details are not limited herein.
For ease of understanding, reference will now be made to specific examples:
assuming that the downlink non-anchor carrier used for paging the terminal is the carrier B, when 2 bits are used to report the repetition number of the downlink non-anchor carrier B used for paging the terminal, the maximum repetition number Rmax of the non-anchor carrier B may be used as a reference, as shown in tables 1 to 3. Here, the maximum number of repetitions Rmax may be Rmax of a search space for paging, which may also be referred to as type 1CSS, i.e., Rmax _ paging. For ease of understanding, specific numerical values are listed below for introduction. Assuming that Rmax _ paging is 64, the number of repetitions of the downlink non-anchor carrier B measured by the terminal for paging the terminal is 32. At this time, the terminal may be denoted by "10" in determining downlink channel measurement information to be transmitted to the base station.
Tables 1 to 3
00 Without measurement
01 Rmax_paging/4
10 Rmax_paging/2
11 Rmax_paging
It should also be noted that, when the terminal reports the downlink channel measurement information of the anchor carrier, the number of repetitions in the downlink channel measurement information may be referred to as a maximum number of repetitions Rmax of the anchor carrier, and specifically, the Rmax may be an Rmax of a type2 CSS. Since different coverage levels correspond to different type2CSS Rmax, respectively, there may be 3 Rmax on the anchor carrier, as shown in table 1-1. Therefore, when the terminal reports the downlink channel measurement information of the anchor carrier, the maximum repetition time Rmax may be Rmax of the second type common search space type2CSS corresponding to the coverage level when the random access response is successfully received on the anchor carrier. Specifically, when NRSRP measured by the terminal is on CE0, the terminal transmits the random access preamble with NPRACH configuration corresponding to CE 0. At this time, the terminal reports the downlink channel quality of the anchor carrier by using the type2CSS Rmax corresponding to the anchor carrier CE0 as a reference, as shown in tables 1 to 4.
Tables 1 to 4
00 Without measurement
01 Rmax_CE0/4
10 Rmax_CE0/2
11 Rmax_CE0
If the access of the terminal on the CE0 fails, for example, the number of failure times of preamble transmission exceeds a threshold, the terminal may switch to the CE1 for random access. At this time, the terminal reports the number of repetitions in the downlink channel quality of the anchor carrier with reference to the type2CSS Rmax corresponding to the anchor carrier CE1, as shown in tables 1 to 5.
Tables 1 to 5
00 Without measurement
01 Rmax_CE1/4
10 Rmax_CE1/2
11 Rmax_CE1
In addition, when reporting the downlink channel measurement information of the anchor carrier, the protocol may also stipulate that the downlink channel measurement information is reported always with reference to type2CSS Rmax corresponding to one coverage class, or the terminal may also report with reference to type 1CSSRmax of the anchor carrier, which is not described herein again.
In addition, if the terminal reports the second carrier in the determined downlink channel measurement information, the number of repetitions in the downlink channel measurement information reported by the terminal may be referred to as a maximum number of repetitions Rmax of the second carrier, where the Rmax may be an Rmax of a UE-specific search space (USS) specified by the terminal device on the second carrier, and details thereof are not repeated here.
In some possible embodiments, the downlink channel measurement information may further include a signal-to-noise ratio, a reference signal received quality RSRQ, and other information that may reflect a downlink channel quality of a carrier, which is not limited herein. In this embodiment and the following embodiments, only the case that the downlink channel measurement information includes the repetition number is taken as an example for description.
In this embodiment, when the terminal sends the downlink channel measurement information of at least two carriers to the base station in the msg3 for random access, the terminal may report the downlink channel measurement information of each carrier in the following manners:
(1) and setting different carrier identification information for different carriers so that the base station can distinguish the downlink channel measurement information corresponding to different carriers in the msg 3. As shown in table 2, the carrier id information may be represented by 2 bits, the carrier id information is 00 to represent an anchor carrier, the carrier id information is 01 to represent a non-anchor carrier used for paging the terminal, and the carrier id information is 10 to represent a non-anchor carrier used for random access.
TABLE 2
Carrier identification information Carrier wave
00 Anchor carrier
10 Non-anchor carrier for random access
01 Non-anchor carrier for paging the terminal
Or, the 15 carriers configured by the system message and the anchor carrier are distinguished by 4 bits, and the specific identification case may be referred to table 2-1.
TABLE 2-1
Carrier identification information Carrier wave
0 Anchor carrier
1 Non-anchor carrier 1 of SIB22-NB configuration
2 Non-anchor carrier 2 of SIB22-NB configuration
3 SIB22-NB configured non-anchor carrier 3
4 SIB22-NB configured non-anchor carrier 4
5 SIB22-NB configured non-anchor carrier 5
6 SIB22-NB configured non-anchor carrier 6
7 SIB22-NB configured non-anchor carrier 7
8 SIB22-NB configured non-anchor carrier 8
9 SIB22-NB configured non-anchor carrier 9
10 SIB22-NB configured non-anchor carrier 10
11 SIB22-NB configured non-anchor carrier 11
12 SIB22-NB configured non-anchor carrier 12
13 SIB22-NB configured non-anchor carrier 13
14 SIB22-NB configured non-anchor carrier 14
15 SIB22-NB configured non-anchor carrier 15
In addition, in some possible embodiments, 1 bit may be used to represent an anchor carrier or a non-anchor carrier for random access, for example, 0 may be used to represent the anchor carrier, 1 may be used to represent the non-anchor carrier, and then the other 4 bits may be used to represent the non-anchor carrier for paging the terminal.
It should be understood that, in practical applications, the carrier identification information may be identified differently from the above-mentioned identification, for example, no carrier identification information indicates an anchor carrier, and 15 non-anchor carriers configured by the base station are identified by 1 to 15 characters, respectively. It should be understood that the correspondence relationship between the carrier identification information and the carrier in the above table 2 and table 2-1 may be changed, and the specific correspondence relationship is not limited herein. In this embodiment, other identification manners may also be adopted, and are not limited herein.
A more specific possible implementation manner is to use the carrier id information and the repetition number, i.e., { carrier id information, repetition number }, to indicate the downlink channel measurement information of one carrier, as shown in table 2-2, where {00, 01} indicates that the repetition number on the anchor carrier is 8. The terminal may report multiple carriers, such as { carrier identification information 1, repetition number 1}, { carrier identification information 2, repetition number 2}, and so on.
Tables 2 to 2
Figure BDA0002012345090000201
Therefore, when the base station receives the downlink channel measurement information, the base station can distinguish different carriers and the number of repetitions corresponding to the carriers.
(2) The downlink channel measurement information does not contain carrier identification information, and the repetition times corresponding to different carriers are distinguished according to the sequence of the repetition times in the message 3. Taking the downlink channel measurement information of three carriers reported in the msg3 as an example for introduction, the downlink channel measurement information is expanded to 6 bits, wherein each 2 bits corresponds to one carrier, and thus the repetition times corresponding to different carriers can be distinguished according to the bit position sequence. For example, the top 2 bits may represent the number of repetitions corresponding to the anchor carrier, the bottom 2 bits may represent the number of repetitions corresponding to the non-anchor carrier used for random access, and the middle 2 bits may represent the number of repetitions corresponding to the non-anchor carrier used for paging the terminal. Of course, in practical applications, the number of repetitions corresponding to the carriers indicated by the bit position sequence may be different from the sequence listed above, and is not limited herein.
In this embodiment, the two manners may also be combined, for example, it is agreed that the highest two bits represent the repetition number corresponding to the anchor carrier, the next two bits represent the repetition number corresponding to the randomly accessed non-anchor carrier, the last four bits represent the carrier identifier, and the last two bits represent the repetition number of the carrier corresponding to the carrier identifier. The order of the above bit positions may also be changed, and is not limited herein.
The combined results of the above-mentioned modes are respectively described below:
in a possible implementation manner, if the base station and the terminal both support no paging and there is a narrowband downlink reference signal NRS before the paging occasion PO, at this time, the terminal may send downlink channel measurement information of a downlink non-anchor carrier used for random access, downlink channel measurement information of an anchor carrier, and downlink channel measurement information of a non-anchor carrier used for paging the terminal. Among the bits submitted by convention, the first X1 bits represent downlink channel measurement information of a downlink non-anchor carrier used for random access, the next X2 bits represent downlink channel measurement information of an anchor carrier, the next X3 bits represent downlink channel measurement information corresponding to a carrier identifier, and the next X4 bits are carrier identifiers. It should be appreciated that the carrier identity may represent a non-anchor carrier used for paging the terminal, wherein the X1, X2, X3, and X4 are integers greater than or equal to 1.
Specifically, the reporting may be via a Radio Resource Control (RRC) message in msg 3. When the RRC message is an RRC connection request (RRC connected request), X1, X2, X3, and X4 may be 4 bits, and 4 bits, respectively; or reported by a media access control element (MAC CE) in msg3, X1, X2, X3, and X4 may be 4 bits, and 4 bits, respectively. Specific values of X1, X2, X3, and X4 may be other values, and are not limited herein.
In another possible implementation manner, if the base station and the terminal both support no paging and there is a narrowband downlink reference signal NRS before the paging occasion PO, at this time, the terminal may send downlink channel measurement information of a downlink non-anchor carrier used for random access, an anchor carrier, and downlink channel measurement information of a carrier with better downlink channel measurement information in the non-anchor carrier used for paging the terminal. The specific reporting mode may also be similar to the implementation mode a.
In addition, in another possible implementation manner, if neither the base station nor the terminal supports paging, and a narrowband downlink reference signal NRS also exists before the paging occasion PO, at this time, the terminal may send downlink channel measurement information of a downlink non-anchor carrier used for random access and downlink channel measurement information of an anchor carrier. Among the bits submitted by convention, the first Y1 bits represent the downlink channel measurement information of the downlink non-anchor carrier used for random access, and the next Y2 bits represent the downlink channel measurement information of the anchor carrier. The Y1 and Y2 bits may be in RRC or MAC CE. Y1 may be 4, Y2 may be 4, or other values, and is not limited herein, where Y1, Y2, Y3, and Y4 are all integers greater than or equal to 1.
In this embodiment, in addition to reporting the downlink channel measurement information of each carrier in the above several manners, other manners capable of distinguishing the number of repetitions corresponding to different carriers may also be used, and the details are not limited herein.
104. The base station determines at least one of the following according to the downlink channel measurement information of at least two carriers: configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment and sending the number of repetitions used by a signaling to the terminal equipment;
in this embodiment, after the base station receives the downlink channel measurement information in msg3 sent by the terminal, the base station determines at least one of the following according to the downlink channel measurement information of at least two carriers: the method comprises the steps of configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment, and sending the number of repetitions used by signaling to the terminal equipment.
Specifically, when the base station refers to the downlink channel measurement information sent by the terminal, the base station may directly select one carrier from the carriers related to the downlink channel measurement information as a carrier configured by the base station for the terminal, which is called a configured carrier for convenience of introduction, and then determine the number of repetitions corresponding to the configured carrier. For ease of understanding, table 3 is presented as an example. Supposing that after receiving downlink channel measurement information reported by a terminal, the base station determines that the anchor carrier, the non-anchor carrier B used for paging the terminal, and the carrier a used for random access are the most suitable among the anchor carrier, the non-anchor carrier B used for paging the terminal, and the carrier a used for random access, and then determines that the non-anchor carrier B used for paging the terminal is a configured carrier, and then determines the number of times of repeating data transmission on the non-anchor carrier B used for paging the terminal. At this time, the base station refers to the number of repetitions in the downlink channel measurement information reported by the terminal, and then the base station may use 32 times as the number of repetitions for sending data on the non-anchor carrier B used for paging the terminal, but the base station may also reset the number of repetitions, for example, reset the number of repetitions to 16 times, to ensure that the terminal can save resources when receiving the data sent by the base station.
TABLE 3
Figure BDA0002012345090000221
For easy understanding, please refer to fig. 2A, where fig. 2A shows that the carrier configured by the base station to the terminal is a downlink non-anchor carrier a for random access; similarly, as shown in fig. 2B, fig. 2B shows that the carrier configured by the base station to the terminal is a downlink non-anchor carrier B for paging the terminal; similarly, it can be seen that fig. 2C shows that the carrier configured by the base station for the terminal is a downlink anchor carrier. It should be noted that there is an implementation manner, when the terminal reports the downlink non-anchor carrier a used for random access, the downlink non-anchor carrier B used for paging the terminal, and the downlink channel measurement information of the downlink anchor carrier to the base station, however, after referring to the downlink channel measurement information reported by the terminal, if the base station finds that none of the carriers related to the downlink channel measurement information is suitable through analysis, the carrier configured by the base station to the terminal may not be the carrier related to the downlink channel measurement information, but the base station may determine the configured carrier by referring to the downlink channel measurement information reported by the terminal. As shown in fig. 2D, assuming that the configured carrier is a non-anchor carrier C, the base station sets the number of repetitions of the non-anchor carrier C according to the resource occupation situation, the network situation, and the like.
105. And the terminal receives data sent by the base station by adopting the configured carrier.
In this embodiment, after the base station determines the configured carrier and the number of repetitions corresponding to the configured carrier, the base station may send data to the terminal on the configured carrier by using the number of repetitions corresponding to the configured carrier. In particular, as shown in fig. 2A, when the configured carrier is still the downlink non-anchor carrier a for random access, the terminal will still transmit data on the downlink non-anchor carrier a for random access. The data mentioned in this embodiment may be unicast data or multicast data, and is not limited herein.
It should be understood that the carrier configured for the terminal is a carrier configured for the terminal by Radio Resource Control (RRC) signaling after random access by the base station. After random access, the terminal changes from an idle state to a connected state, and the terminal can receive or transmit data on the configured carrier.
In this embodiment, when the terminal sends the downlink channel measurement information to the base station in the message 3 of the random access process, the downlink channel measurement information of at least two carriers is sent instead of the downlink channel measurement information of one carrier, so that the range of the downlink channel measurement information of the carrier that the base station can refer to is expanded, and therefore, the base station has a higher probability of knowing the downlink channel quality of the carrier that the base station configures to the terminal and is used for sending data to the terminal, which is beneficial for the base station to reconfigure the carrier to the terminal so as to send data to the terminal.
As shown in fig. 4, the method flow when the terminal is in the idle state is introduced above, and the specific flow in the measurement information reporting method when the terminal is in the connected state is introduced below, where the terminal and the base station perform the following steps:
401. the terminal sends a random access lead code to the base station;
in this embodiment, when the terminal has uplink data to transmit or has other requirements, the terminal sends a random access preamble, i.e., msg1 shown in fig. 5A and 5B, to the base station on an uplink non-anchor carrier. Moreover, the terminal may also randomly select a carrier for random access, which is similar to step 101 and will not be described herein again.
402. The terminal receives a random access response sent by the base station on a first carrier;
in this embodiment, after the terminal sends a random access preamble to the base station, and the terminal has determined to receive a random access response through the downlink non-anchor carrier a for random access, the base station replies a random access response, that is, msg2 shown in fig. 5A and 5B, to the terminal on the downlink non-anchor carrier a for random access.
403. The terminal sends downlink channel measurement information of at least two carriers to the base station in a message 3 in a random access process, wherein the at least two carriers comprise the first carrier;
then, when the terminal replies msg3 to the base station, the terminal sends downlink channel measurement information of at least two carriers to the base station in msg3 of the random access process, where the at least two carriers include the first carrier, and the first carrier is a carrier that receives a random access response, that is, a downlink non-anchor carrier a used for random access in fig. 5A and 5B, and still taking fig. 5A and 5B as an example, the terminal sends the downlink channel measurement information of the at least two carriers to the base station, where the downlink channel measurement information of the at least two carriers includes the downlink channel measurement information of the downlink non-anchor carrier a used for random access in fig. 5A and 5B. In addition, when the terminal is in the connected state, the at least two carriers may further include a second carrier, where the second carrier refers to a carrier used by the terminal to receive or transmit data before the random access procedure. The second carrier may be an anchor carrier, a carrier used for paging the terminal, a carrier used for random access, or another carrier configured by the base station for the terminal, and is not limited herein. In this embodiment and the following embodiments, only the second carrier is taken as an example for description. The second carrier is configured by the base station through RRC signaling.
In a possible implementation manner, the terminal sends downlink channel measurement information of a downlink non-anchor carrier used for random access and downlink channel measurement information of a second carrier. Wherein, in the bits submitted by convention, the first Z1 bits represent the downlink channel measurement information of the downlink non-anchor carrier used for random access, and the next Z2 bits represent the downlink channel measurement information of the second carrier. Z1 may be 4 and Z2 may be 4 when reported by an RRC connection reestablishment request (RRC connection reestablishment request) in msg 3. Z1 and Z2 bits may also be carried by the MAC CE, where Z1 and Z2 are integers greater than or equal to 1.
In this embodiment, the downlink channel measurement information includes a repetition number, which is the number of times when the base station repeatedly transmits data to the terminal in order to ensure that the data transmitted to the terminal can be received by the terminal. In this embodiment, the number of repetitions set by the base station is recommended when the terminal receives data transmitted by the base station on a certain carrier, where the repetitions are obtained by measuring the certain carrier. That is, when the base station receives the repetition number in the downlink channel measurement information sent by the terminal, the base station may refer to the repetition number in the downlink channel measurement information and other information in the downlink channel measurement information, and then the base station determines the carrier configured for the terminal and the repetition number of data sent on the configured carrier. Specifically, the determination manner of the repetition times is similar to that in the foregoing step 103, and details are not repeated here.
In some possible embodiments, the downlink channel measurement information may further include a signal-to-noise ratio, a reference signal received quality RSRQ, and other information that may reflect a downlink channel quality of a carrier, which is not limited herein.
404. The base station determines at least one of the following according to the downlink channel measurement information of at least two carriers: configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment and sending the number of repetitions used by a signaling to the terminal equipment;
in this embodiment, after the base station receives the downlink channel measurement information in msg3 sent by the terminal, the base station determines at least one of the following according to the downlink channel measurement information of at least two carriers: the method comprises the steps of configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment, and sending the number of repetitions used by signaling to the terminal equipment. Similar to the foregoing step 104, detailed description thereof is omitted here.
405. And the terminal receives data sent by the base station by adopting the reconfigured carrier.
In this embodiment, after the base station determines the reconfigured carrier and the number of repetitions corresponding to the reconfigured carrier, the base station may send data to the terminal on the reconfigured carrier by using the number of repetitions corresponding to the reconfigured carrier. Specifically, as shown in fig. 5A, when the reconfigured carrier is still the downlink non-anchor carrier a for random access, the terminal will still transmit data on the downlink non-anchor carrier a for random access. As shown in fig. 5B, when the reconfigured carrier is the second carrier, the terminal will send data on the second carrier. The data mentioned in this embodiment may be unicast data or multicast data, and is not limited herein.
In this embodiment, when the terminal sends the downlink channel measurement information to the base station in the message 3 of the random access process, the downlink channel measurement information of at least two carriers is sent instead of the downlink channel measurement information of one carrier, so that the range of the downlink channel measurement information of the carrier that the base station can refer to is expanded, and therefore, the base station has a higher probability of knowing the downlink channel quality of the carrier that the base station configures to the terminal and is used for sending data to the terminal, which is beneficial for the base station to reconfigure the carrier to the terminal so as to send data to the terminal.
In addition to the above embodiments, in some possible embodiments, in addition to sending the downlink channel measurement information of the carrier to the base station in the msg3 for random access, the terminal may send the downlink channel measurement information of the carrier in an RRC connection setup complete signaling after the random access procedure, or send the RRC connection setup complete signaling and the downlink channel measurement information of the carrier to the base station together after the random access procedure. Referring specifically to fig. 6, this will be described in detail as follows:
601. the terminal sends a random access lead code to the base station;
in this embodiment, when the terminal has uplink data to be transmitted or has other requirements, the terminal sends a random access preamble to the base station on an uplink non-anchor carrier. Specifically, similar to step 101, the detailed description is omitted here.
602. The terminal receives a random access response sent by the base station on a first carrier;
in this embodiment, after the terminal sends the random access preamble to the base station, the terminal will receive the random access response on the first carrier.
603. The terminal sends downlink channel measurement information of a carrier wave to the base station in a message 3 in the random access process, wherein the carrier wave can be a first carrier wave;
in this embodiment, the terminal sends, to the base station, downlink channel measurement information of a carrier in the msg3 in the random access process, where the carrier may be a first carrier, and the first carrier is a carrier that receives a random access response. In addition, the carrier may also be an anchor carrier or a non-anchor carrier for paging the terminal, which is similar to step 103 and is not described herein again.
In this embodiment, the downlink channel measurement information includes a repetition number, which is the number of times when the base station repeatedly transmits data to the terminal in order to ensure that the data transmitted to the terminal can be received by the terminal. In this embodiment, the number of repetitions set by the base station is recommended when the terminal receives data transmitted by the base station on a certain carrier, where the repetitions are obtained by measuring the certain carrier. That is, when the base station receives the repetition number in the downlink channel measurement information sent by the terminal, the base station may refer to the repetition number in the downlink channel measurement information and other information in the downlink channel measurement information, and then the base station determines the carrier configured for the terminal and the repetition number of data sent on the configured carrier. Specifically, the determination manner of the repetition times is similar to that in the foregoing step 103, and details are not repeated here.
In some possible embodiments, the downlink channel measurement information may further include a signal-to-noise ratio, a reference signal received quality RSRQ, and other information that may reflect a downlink channel quality of a carrier, which is not limited herein.
It should be noted that the message 3 is used as an uplink signaling sent by the terminal to the base station for requesting to establish an RRC connection, where the uplink signaling may generally include an RRC signaling part, a MAC CE, and the like, and the RRC signaling may be different according to different scenarios, for example, the RRC signaling may be an RRC connection establishment request, an RRC reestablishment request, an RRC recovery request, an RRC data early-transfer request, and the like, and is not limited herein. In this embodiment and the following embodiments, only the message 3 is taken as an example for description.
604. The terminal receives a message 4 sent by the base station on a first carrier;
in this embodiment, after the terminal sends message 3 to the base station, the base station sends message 4 to the terminal, where the message 4 is message 4 in the random access procedure (msg 4).
It should be noted that the message 4 is downlink signaling sent by the base station for RRC connection, and may include RRC signaling. The RRC signaling may be different according to different scenarios, for example, the RRC signaling may be RRC connection establishment, RRC re-establishment, RRC connection recovery, and the like, and is not limited herein. In this embodiment and the following embodiments, only the message 4 is taken as an example for description.
It should be noted that the base station may refer to the downlink channel measurement information of the carrier for random access reported in the message 3 to determine the number of repetitions of sending the message 4. In particular, it can be understood as determining the number of repetitions of the NPDCCH used when transmitting message 4.
605. The terminal sends the downlink channel measurement information of at least one carrier to the base station;
in this embodiment, the terminal may send an RRC setup complete signaling to the base station, where the RRC setup complete signaling carries downlink channel measurement information of at least one carrier. It should be understood that the terminal may put the downlink channel measurement information in an RRC setup complete signaling, or send the downlink channel measurement information to the base station together with the RRC setup complete signaling, where the RRC setup complete signaling may be different according to different application scenarios, for example, the RRC connection setup may be completed, the RRC reestablishment may be completed, or the RRC recovery may be completed, and this is not limited herein. In this step, the reporting manner of the downlink channel measurement information may be similar to that in step 103.
It should be understood that instead of sending the downlink channel measurement information of the carriers in message 3 of the random access procedure, the terminal may send the downlink channel measurement information of at least two carriers to the base station after the terminal receives message 4 sent by the base station on the first carrier. More specifically, the terminal may carry downlink channel measurement information of at least two carriers in an RRC setup complete signaling sent to the base station. Therefore, in this case, it is also ensured that the base station receives the downlink channel measurement information of at least two carriers, so that the range of the downlink channel measurement information of the carriers that the base station can refer to is expanded, and it is advantageous for the base station to configure the carriers for the terminal to transmit data to the terminal. In addition, the signaling load of the message 3 in the current random access process is saved.
606. The base station determines at least one of the following according to the downlink channel measurement information of at least one carrier: configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment and sending the number of repetitions used by a signaling to the terminal equipment;
in this embodiment, after the base station receives the downlink channel measurement information sent by the terminal, the base station determines at least one of the following according to the downlink channel measurement information of at least one carrier: the method comprises the steps of configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment, and sending the number of repetitions used by signaling to the terminal equipment.
Specifically, the manner of determining, by the base station, the carrier configured to transmit data to the terminal device, the number of repetitions used for sending data to the terminal device, and the number of repetitions used for sending signaling to the terminal device according to the downlink channel measurement information of the carrier is similar to that in step 104, and details are not repeated here.
607. And the terminal receives data sent by the base station by adopting the configured carrier.
In this embodiment, after the base station determines the configured carrier and the number of repetitions corresponding to the configured carrier, the base station may send data to the terminal on the configured carrier by using the number of repetitions corresponding to the configured carrier. The data mentioned in this embodiment may be unicast data or multicast data, and is not limited herein.
In the embodiment of the present application, after receiving the message 4, the terminal sends the downlink channel measurement information of at least one carrier to the base station. Therefore, the base station can obtain at least the downlink channel measurement information of the first carrier and the downlink channel measurement information of the other carrier, so that the range of the downlink channel measurement information of the carrier which can be referred by the base station is expanded, and the base station is favorable for reconfiguring the carrier for the terminal so as to send data to the terminal. In addition, the downlink channel measurement information of the two carriers is separately sent, which is beneficial to saving the signaling load in the current random access process.
While the method proposed in the embodiment of the present application is described above, a specific structure of a terminal for executing the method is described below, and the structure of the terminal may mainly include a processor 701, an input/output device 702, and a memory as shown in fig. 7.
The processor 701 may include, among other things, circuitry for the audio/video and logic functions of the terminal 70. For example, the processor 701 may include a digital signal processor device, a microprocessor device, an analog-to-digital converter, a digital-to-analog converter, and so forth. The control and signal processing functions of the mobile device may be allocated between these devices according to their respective capabilities. The processor 701 may also include an internal voice coder VC, an internal data modem DM, and the like. Further, the processor 701 may include functionality to operate one or more software programs, which may be stored in memory. In general, the processor 701 and stored software instructions may be configured to cause the terminal to perform actions. In this embodiment, the processor 701 is configured to determine that downlink channel measurement information of at least two carriers including the carrier for random access is sent to a base station through the input/output device in message 3 of a random access procedure. The input/output device 702 is configured to receive a random access response sent by a base station. Optionally, the input/output device 702 is further configured to send a random access preamble to the base station.
The terminal 70 may further comprise a user interface 703, which user interface 703 may be a speaker, a microphone or an interface for connecting a detection circuit, etc., operatively coupled to the processor 701. In this regard, the processor 701 may include user interface circuitry configured to control at least some functions of one or more elements of the user interface. The processor 701 and/or user interface circuitry comprising the processor 701 may be configured to control one or more functions of one or more elements of the user interface through computer program instructions (e.g., software and/or firmware) stored in a memory accessible to the processor 701. Although not shown, the terminal 70 may include a battery for powering the various circuits associated with the mobile device. The terminal 70 may also include one or more connection circuit modules for sharing and/or obtaining data. For example, the terminal 70 may include a transmitter 7041 and a receiver 7042, thereby implementing a data transceiving function. The terminal 70 can include volatile memory 7051 and/or non-volatile memory 7052. For example, volatile memory 7051 may include random access memory RAM, including dynamic RAM and/or static RAM, on-chip and/or off-chip cache memory, and the like. Non-volatile memory 7052, which may be embedded and/or removable, may include, for example, read-only memory, flash memory, and magnetic storage devices, such as hard disks, floppy disk drives, magnetic tape, etc., optical disk drives and/or media, non-volatile random access memory NVRAM, and/or the like. Similar to the volatile memory 7051, the non-volatile memory 7052 may include a cache area for the temporary storage of data. At least a portion of the volatile and/or nonvolatile memory may be embedded in the processor 701. The memories may store one or more software programs, instructions, blocks of information, data, and the like, which may be used by the terminal 70 to perform the functions of the mobile terminal.
In the embodiment of the present application, when the terminal sends the downlink channel measurement information to the base station in the message 3 of the random access process, the downlink channel measurement information of at least two carriers is sent instead of the downlink channel measurement information of one carrier, so that the range of the downlink channel measurement information of the carrier that the base station can refer to is expanded, and therefore, the base station has a higher probability of knowing the downlink channel quality of the carrier that the base station configures to the terminal and is used for sending data to the terminal, which is beneficial for the base station to reconfigure the carrier to the terminal so as to send data to the terminal.
The following describes the base station 80 in this embodiment, as shown in fig. 8, which is a schematic structural diagram of the base station 80 provided in this embodiment, the base station 80 may generate a relatively large difference due to different configurations or performances, and may include one or more processors 801 and a memory 802, and one or more storage media 803 (e.g., one or more mass storage devices) for storing applications or data. Memory 802 and storage medium 803 may be, among other things, transient storage or persistent storage. The base station also includes one or more input/output devices 805, the input/output devices 805 for sending random access responses to the terminals.
Still further, the processor 801 may be arranged to communicate with the storage medium 803, the processor 801 being arranged to execute an application program in the storage medium 803, in particular: the processor is configured to determine that downlink channel measurement information of at least two carriers sent by the terminal is received through the input/output device in message 3 of a random access procedure, where the at least two carriers include the carrier for random access. The processor is further configured to determine a carrier configured to the terminal to transmit data to the terminal and/or a repetition number of transmitting data to the terminal with reference to the downlink channel measurement information of the at least two carriers.
It should be understood that the base station 80 may also include one or more power supplies 804, and/or one or more operating systems, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.
It should also be understood that, in the embodiments of the method corresponding to fig. 1 or fig. 4, the steps performed by the base station may be based on the structure of the base station 80 shown in fig. 8.
In the embodiment of the present application, when the terminal sends the downlink channel measurement information to the base station in the message 3 of the random access process, the downlink channel measurement information of at least two carriers is sent instead of the downlink channel measurement information of one carrier, so that the range of the downlink channel measurement information of the carrier that the base station can refer to is expanded, and therefore, the base station has a higher probability of knowing the downlink channel quality of the carrier that the base station configures to the terminal and is used for sending data to the terminal, which is beneficial for the base station to reconfigure the carrier to the terminal so as to send data to the terminal.
Embodiments of the present application also provide a computer storage medium for storing computer instructions for the base station, which includes a program for executing the program designed for the base station.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.
The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the present application occur, in whole or in part, when the computer program instructions are loaded and executed on a computer.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should 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 in the embodiments of the present application.

Claims (29)

1. A method for reporting measurement information is characterized by comprising the following steps:
the terminal equipment receives a random access response sent by the network equipment on a first carrier;
and the terminal equipment sends downlink channel measurement information of at least two carriers to network equipment in a message 3 in a random access process, wherein the at least two carriers comprise the first carrier.
2. The method of claim 1, wherein the at least two carriers comprise an anchor carrier or a non-anchor carrier for paging the terminal device.
3. The method according to claim 1 or 2, wherein the at least two carriers further comprise a second carrier, and the second carrier is a carrier used by the terminal device for receiving or transmitting data before the random access procedure.
4. A method for reporting measurement information is characterized by comprising the following steps:
the network equipment sends a random access response to the terminal equipment on the first carrier;
and the network equipment receives downlink channel measurement information of at least two carriers sent by the terminal equipment in a message 3 in a random access process, wherein the at least two carriers comprise the first carrier.
5. The method of claim 4, further comprising:
the network equipment determines at least one of the following according to the downlink channel measurement information of the at least two carriers: the method comprises the steps of configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment, and sending the number of repetitions used by a signaling to the terminal equipment.
6. The method of claim 4 or 5, wherein the at least two carriers comprise an anchor carrier or a non-anchor carrier for paging the terminal device.
7. The method according to any of claims 4 to 6, wherein the at least two carriers further comprise a second carrier, and the second carrier is a carrier used by the network device to receive or transmit data of the terminal device before the random access procedure.
8. A method for reporting measurement information is characterized by comprising the following steps:
the terminal equipment receives a message 4 of a random access process sent by network equipment on a first carrier;
and responding to the message 4, the terminal equipment sends the downlink channel measurement information of at least one carrier to the network equipment.
9. The method of claim 8, wherein the at least one carrier does not include the first carrier.
10. The method according to claim 8 or 9, wherein before the terminal device receives the message 4 of the random access procedure sent by the network device on the first carrier, the method further comprises:
and the terminal equipment sends the downlink channel measurement information of the first carrier to the network equipment in the message 3 in the random access process.
11. The method of claim 8, wherein the at least one carrier comprises the first carrier.
12. The method of any of claims 8 to 11, wherein the at least one carrier comprises an anchor carrier or a non-anchor carrier for paging the terminal device.
13. The method according to any of claims 8 to 12, wherein a second carrier is included in the at least one carrier, and the second carrier is a carrier used by the terminal device for receiving or transmitting data before the random access procedure.
14. A method for reporting measurement information is characterized by comprising the following steps:
the network equipment sends a message 4 of a random access process to the terminal equipment on a first carrier wave;
and the network equipment receives the downlink channel measurement information of at least one carrier wave sent by the terminal equipment.
15. The method of claim 14, wherein the at least one carrier does not include the first carrier.
16. The method according to claim 14 or 15, wherein the network device sends message 4 of the random access procedure to the terminal device on the first carrier, and the method further comprises:
and the network equipment receives the downlink channel measurement information of the first carrier wave sent by the terminal equipment in the message 3 in the random access process.
17. The method of claim 14, wherein the at least one carrier comprises the first carrier.
18. The method of any of claims 14 to 17, wherein the at least one carrier comprises an anchor carrier or a non-anchor carrier for paging the terminal device.
19. The method according to any of claims 14 to 18, wherein a second carrier is included in the at least one carrier, and the second carrier is a carrier used by the network device to receive or transmit data of the terminal device before the random access procedure.
20. The method according to any one of claims 14 to 19, further comprising:
the network equipment determines at least one of the following according to the downlink channel measurement information of the at least one carrier: the method comprises the steps of configuring a carrier for transmitting data to the terminal equipment, sending the number of repetitions used by the data to the terminal equipment, and sending the number of repetitions used by a signaling to the terminal equipment.
21. The method according to any one of claims 1 to 20, wherein the downlink channel measurement information comprises a repetition number.
22. The method according to any one of claims 1 to 21, wherein the downlink channel measurement information further comprises carrier identification information.
23. The method of claim 21, wherein the number of repetitions in the downlink channel measurement information is based on a maximum number of repetitions of a carrier, Rmax, wherein the maximum number of repetitions of different carriers, Rmax, is different.
24. A communications apparatus comprising at least one processor configured to couple to a memory, read and execute instructions in the memory, and to implement the method of any one of claims 1 to 3 or 8 to 13 or 21 to 23.
25. The communications apparatus of claim 24, further comprising the memory.
26. A communications apparatus comprising at least one processor configured to couple to a memory, read and execute instructions in the memory, and to implement the method of any one of claims 4-7 or 14-23.
27. The communications apparatus of claim 26, further comprising the memory.
28. A communication system comprising a communication device according to claim 24 or 25 and a communication device according to claim 26 or 27.
29. A computer-readable storage medium comprising instructions that, when executed on a computer, cause the method of any of claims 1-23 to be performed.
CN201910250794.XA 2019-02-15 2019-03-29 Measurement information reporting method and related device Pending CN111586745A (en)

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CN201910118063 2019-02-15

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