CN114745785A - Carrier determination method and apparatus, user equipment, network equipment and storage medium - Google Patents

Abstract

The invention discloses a carrier wave determining method and device, user equipment, network equipment and a storage medium. The carrier wave determining method comprises the following steps: receiving system information broadcasted by network equipment, wherein the system information comprises downlink carriers for sending narrowband reference signals corresponding to each wave beam in a cell where user equipment is located and index configuration information of the associated carriers; determining a target downlink carrier according to the signal quality of the downlink carrier for sending the narrowband reference signal; and determining a carrier used for transmitting the target message according to the carrier associated with the target downlink carrier. In the invention, the network equipment configures downlink carriers and associated carriers for sending narrowband reference signals for each wave beam in a cell where the user equipment is located through the broadcasted system information, the user equipment determines target downlink carriers through measuring signal quality and determines the carriers for transmitting target messages according to the associated carriers, thereby improving the stability of satellite communication and further expanding the coverage range of communication.

Description

Carrier determination method and apparatus, user equipment, network equipment and storage medium

technical field

The present invention relates to the field of communication technologies, and in particular, to a method and device for determining a carrier, a user equipment, a method and device for broadcasting system information, a network device, and a storage medium.

Background technique

The random access process of the current terrestrial Internet of Things protocol such as narrowband Internet of Things NB-IoT or eMTC is shown in Figure 1, which consists of four steps: Msg1, Msg2, Msg3 and Msg4. Msg1 is the random access preamble sent by the user equipment UE to the network device. Currently, the maximum number of repetitions sent by Msg1 is 128. Before sending Msg1, the UE will obtain the current cell signal quality through the narrowband reference signal NRS, such as RSRP (Reference Signal Receiving Power, Reference signal received power), and then compare the measured signal quality with the relevant threshold value configured by the network, and then determine the current coverage level. Different coverage levels correspond to different PRACH (Physical Random Access Channel, physical random access channel) resources (including the number of Msg1 repetitions). The uplink carrier of the resource sends Msg1. If the first transmission of Msg1 fails, the UE will upgrade the coverage level (ie increase the number of repetitions of Msg1) and try again until the Msg2 is successfully received or the number of repetitions of Msg1 corresponding to the coverage level is completed.

After receiving Msg1, the network device instructs the UE to send Msg3 resources and related parameters (including subcarrier indication, Msg3 repetition times, MCS (Modulation and CodingScheme, modulation and coding strategy) indication through the random access response message Msg2-RAR, etc. ). The random access response message Msg2-RAR is scheduled by DCI (Downlink Control Information, downlink control information), and the UE first receives the downlink control information (that is, the DCI scrambled by RA-RNTI, which is used to indicate the transmission parameters of Msg2-RAR, including receiving resource location, subcarrier indication, Msg3 repetition times, MCS indication, etc.), and then receive the Msg2-RAR according to the downlink control information.

The UE sends the Msg3 according to the related scheduling information of the Msg3 indicated by the Msg2-RAR. After the UE sends the Msg3, it uses the unique identifier carried in the Msg3 to monitor the PDCCH. After successfully decoding the PDCCH, it receives the corresponding Msg4 according to the DCI information carried by the PDCCH.

In the current terrestrial Internet of Things protocol, the carrier determination mechanism for sending the Msg1 is as follows: the UE randomly determines an uplink carrier for sending the Msg1 among multiple uplink carriers configured with PRACH resources configured in the cell where it resides. However, in an NTN (Non Terrestrial Networks, non-terrestrial network) scenario, a cell consists of multiple beam beams, and different beams correspond to different uplink carrier groups. With the rapid movement of the satellite, the UE needs to perform beam switching frequently, and the above-mentioned existing carrier determination mechanism for sending Msg1 is obviously unable to adapt to the satellite Internet of Things scenario.

In addition, in the existing protocol for determining a carrier for receiving paging paging, the network device delivers configuration information related to paging through system information, including the paging period, the PDCCH repetition times corresponding to PO (Paging Occasion, paging moment), N and Ns (wherein each discontinuous reception DRX cycle includes N paging frames PF, and each PF includes Ns POs) and other parameters, and the Paging weight of each Paging carrier is also configured. These parameters are at the cell level, that is, the Paging parameter configurations of all carriers in the cell are the same. When the UE is in the Idle state, according to the UE_ID, the parameter N, the parameter Ns and the Paging weight of each Paging carrier, it can be determined on which carrier of the cell where it is camped to perform Paging monitoring.

Similarly, in the satellite IoT scenario, with the rapid movement of the satellite, the UE needs to perform beam switching frequently, and the above-mentioned existing protocol for determining the received Paging carrier is obviously not suitable for the satellite IoT scenario.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a carrier determination method and device, a user equipment, a system information broadcasting method and device, in order to overcome the defect that the existing land network IoT protocol cannot adapt to the satellite IoT scenario, A network device and a storage medium.

The present invention solves the above-mentioned technical problems through the following technical solutions:

A first aspect of the present invention provides a carrier determination method, comprising the following steps:

Receive system information broadcast by the network device, where the system information includes index configuration information of the downlink carrier that transmits the narrowband reference signal corresponding to each beam in the cell where the user equipment is located, and the information associated with the downlink carrier that transmits the narrowband reference signal. Carrier index configuration information;

Determine the target downlink carrier according to the signal quality of the downlink carrier that transmits the narrowband reference signal;

The carrier used for transmitting the target message is determined according to the carrier associated with the target downlink carrier.

Optionally, the system information further includes a reference threshold of signal quality; the determining of the target downlink carrier according to the signal quality of the downlink carrier that sends the narrowband reference signal specifically includes:

If the signal quality of the downlink carrier that sends the narrowband reference signal is greater than the reference threshold, the downlink carrier is used as the target downlink carrier.

Optionally, if there are multiple downlink carriers that transmit narrowband reference signals with signal quality greater than the reference threshold, the downlink carrier with the best signal quality among the multiple downlink carriers is determined as the target downlink carrier.

Optionally, the carriers associated with the downlink carrier for sending the narrowband reference signal are all uplink carriers configured with physical random access channel resources, and the target message is a random access message;

The determining the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier specifically includes:

The uplink carrier used for sending the random access message is randomly determined among the uplink carriers configured with physical random access channel resources associated with the target downlink carrier.

Optionally, the random access message includes a random access preamble Msg1.

Optionally, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the cell corresponding to each beam in the user equipment. The paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal, and configuration information such as paging parameters corresponding to each beam;

The determining the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier specifically includes:

According to the identification information of the user equipment, the paging parameters corresponding to the target beam, and the paging weight of the downlink paging carrier associated with the target downlink carrier, the downlink paging carrier associated with the target downlink carrier determine the downlink paging carrier used for receiving paging messages;

The target beam is a beam corresponding to the target downlink carrier.

Optionally, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the cell corresponding to each beam in the user equipment. Configuration information such as the paging weight of the downlink carrier that sends the narrowband reference signal, the paging weight of the downlink paging carrier associated with the downlink carrier that sends the narrowband reference signal, and the paging parameters corresponding to each beam;

The determining the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier specifically includes:

According to the identification information of the user equipment, the paging parameters corresponding to the target beam, the paging weight of the target downlink carrier and the paging weight of the downlink paging carrier associated with the target downlink carrier, the target Determine the downlink paging carrier used for receiving the paging message from the downlink carrier and the downlink paging carrier associated with the target downlink carrier;

The target beam is a beam corresponding to the target downlink carrier.

Optionally, the paging parameters include the number of paging frames in each DRX cycle and the number of paging occasions in each paging frame.

A second aspect of the present invention provides a carrier determination device, comprising:

A system information receiving module, configured to receive system information broadcast by network equipment, wherein the system information includes index configuration information of the downlink carrier corresponding to each beam in the cell where the user equipment is located for transmitting the narrowband reference signal, and the information related to the transmission of the narrowband reference signal. The index configuration information of the carrier associated with the downlink carrier of the signal;

a first carrier determination module, configured to determine a target downlink carrier according to the signal quality of the downlink carrier that sends the narrowband reference signal;

The second carrier determination module is configured to determine the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier.

Optionally, the system information further includes a reference threshold of signal quality; the first carrier determination module is specifically configured to determine the The carrier is used as the target downlink carrier.

Optionally, the first carrier determination module is specifically configured to determine, among the multiple downlink carriers, the downlink carrier with the best signal quality in the presence of multiple downlink carriers whose signal quality is greater than the reference threshold. The carrier is used as the target downlink carrier.

Optionally, the carriers associated with the downlink carrier for sending the narrowband reference signal are all uplink carriers configured with physical random access channel resources, and the target message is a random access message;

The second carrier determination module is specifically configured to randomly determine an uplink carrier for sending a random access message among uplink carriers associated with the target downlink carrier that are configured with physical random access channel resources.

Optionally, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the cell corresponding to each beam in the user equipment. The paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal, and configuration information such as paging parameters corresponding to each beam;

The second carrier determination module is specifically configured to, according to the identification information of the user equipment, the paging parameters corresponding to the target beam and the paging weight of the downlink paging carrier associated with the target downlink carrier, Determine the downlink paging carrier used for receiving the paging message among the downlink paging carriers associated with the target downlink carrier;

The target beam is a beam corresponding to the target downlink carrier.

Optionally, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the cell corresponding to each beam in the user equipment. Configuration information such as the paging weight of the downlink carrier that sends the narrowband reference signal, the paging weight of the downlink paging carrier associated with the downlink carrier that sends the narrowband reference signal, and the paging parameters corresponding to each beam;

The second carrier determination module is specifically configured to, according to the identification information of the user equipment, the paging parameters corresponding to the target beam, the paging weight of the target downlink carrier, and the downlink paging associated with the target downlink carrier The paging weight of the carrier, the downlink paging carrier used for receiving the paging message is determined in the target downlink carrier and the downlink paging carrier associated with the target downlink carrier;

The target beam is a beam corresponding to the target downlink carrier.

A third aspect of the present invention provides a user equipment, comprising:

at least one processor;

a memory communicatively coupled to the at least one processor; and

Transceivers for communicating with other devices;

Wherein, the memory stores instructions executable by the at least one processor, the instructions are executed by the at least one processor, so that the at least one processor can execute the carrier determination method of the first aspect .

A fourth aspect of the present invention provides a system information broadcasting method, comprising the following steps:

Broadcast system information, where the system information includes index configuration information of downlink carriers that transmit narrowband reference signals corresponding to each beam in the cell where the user equipment is located, and index configuration of carriers associated with the downlink carriers that transmit narrowband reference signals information;

Wherein, the user equipment is the user equipment described in the third aspect.

Optionally, the system information further includes a reference threshold of signal quality.

Optionally, the carriers associated with the downlink carrier for sending the narrowband reference signal are all uplink carriers configured with physical random access channel resources.

Optionally, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the cell corresponding to each beam in the user equipment. The paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal, and configuration information such as paging parameters corresponding to each beam.

Optionally, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the cell corresponding to each beam in the user equipment. configuration information such as the paging weight of the downlink carrier that transmits the narrowband reference signal, the paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal, and the paging parameters corresponding to each beam.

A fifth aspect of the present invention provides a system information broadcasting apparatus, the system information broadcasting apparatus is used for broadcasting system information, wherein the system information includes downlink transmission of narrowband reference signals corresponding to each beam in the cell where the user equipment is located The index configuration information of the carrier, and the index configuration information of the carrier associated with the downlink carrier that transmits the narrowband reference signal;

Wherein, the user equipment is the user equipment described in the third aspect.

Optionally, the system information further includes a reference threshold of signal quality.

Optionally, the carriers associated with the downlink carrier for sending the narrowband reference signal are all uplink carriers configured with physical random access channel resources.

Optionally, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the cell corresponding to each beam in the user equipment. The paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal, and configuration information such as paging parameters corresponding to each beam.

Optionally, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the cell corresponding to each beam in the user equipment. configuration information such as the paging weight of the downlink carrier that transmits the narrowband reference signal, the paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal, and the paging parameters corresponding to each beam.

A sixth aspect of the present invention provides a network device, comprising:

at least one processor;

a memory communicatively coupled to the at least one processor; and

Transceivers for communicating with other devices;

Wherein, the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the system information broadcasting of the fourth aspect method.

A seventh aspect of the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing the computer to perform the carrier wave determination method as described in the first aspect, or as described in the fourth aspect The system information broadcasting method described above.

The positive improvement effect of the present invention is that: the network device configures each beam in the cell where the user equipment is located with a downlink carrier for transmitting the narrowband reference signal through the broadcast system information, and configures an associated downlink carrier for transmitting the narrowband reference signal. The user equipment determines the target downlink carrier according to the signal quality of the downlink carrier that sends the narrowband reference signal, and determines the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier. Meet the needs of frequent beam switching in satellite IoT scenarios. Specifically, as the beam where the user equipment is located changes, the user equipment can determine the target downlink carrier according to the real-time measurement of the signal quality of the downlink carrier that transmits the narrowband reference signal, and determine the target downlink carrier for transmission according to the carrier associated with the target downlink carrier. The carrier of the message, thereby improving the stability of the satellite communication, thereby expanding the coverage of the communication.

Description of drawings

FIG. 1 is a schematic diagram of a random access process in the prior art.

FIG. 2 is a schematic diagram of a communication network architecture according to an embodiment of the present invention.

FIG. 3 is a flowchart of a method for determining a carrier according to Embodiment 1 of the present invention.

FIG. 4 is a schematic diagram of an application scenario of the carrier determination method provided in Embodiment 1 of the present invention.

FIG. 5 is a schematic diagram of another application scenario of the carrier determination method provided in Embodiment 1 of the present invention.

FIG. 6 is a structural block diagram of an apparatus for determining a carrier according to Embodiment 1 of the present invention.

FIG. 7 is a schematic structural diagram of a user equipment according to Embodiment 2 of the present invention.

Detailed ways

The present invention is further described below by way of examples, but the present invention is not limited to the scope of the described examples.

Hereinafter, exemplary application scenarios of the embodiments of the present invention are introduced.

The technical solution of the present invention can be applied to a satellite communication system. FIG. 2 is a schematic diagram of a communication network architecture provided by an embodiment of the present invention. As shown in FIG. 2 , the user equipment 130 can directly perform data communication with the base station 110 on the satellite, and the user equipment 130 can also forward and communicate with the satellite relay through the satellite. Data communication is performed between the base stations 120 . The network device involved in the embodiment of the present invention may be the base station 110 on the satellite, or may be the base station 120 .

The technical solution of the present invention is also applicable to different network architectures, including but not limited to a relay network architecture, a dual-link architecture, a Vehicle-to-Everything (vehicle-to-everything) architecture, and other architectures. This embodiment of the present invention does not make restrictions. This embodiment of the present invention does not limit this. The base station in the embodiment of the present invention may be a communication network providing communication services for terminals, including a base station of a wireless access network, and may also include a base station controller of a wireless access network, or Including devices on the core network side. The base station controller is a device for managing base stations, such as a base station controller (BSC) in a 2G network, a radio network controller (RNC) in a 3G network, or a future A device for controlling and managing base stations in a new communication system.

User equipment (user equipment, UE for short) in this embodiment of the present invention may refer to various forms of access terminals, subscriber units, subscriber stations, mobile stations, mobile stations (mobile stations, built as MSs), remote stations, remote terminals, Mobile equipment, user terminal, terminal equipment, wireless communication equipment, user agent or user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a Wireless communication-enabled handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or future evolved Public Land Mobile Networks (PLMN for short) ), which is not limited in this embodiment of the present invention.

In this embodiment of the present invention, a base station (base station, BS for short), which may also be referred to as base station equipment, is a device deployed in a radio access network (RAN) to provide a wireless communication function. For example, devices that provide base station functions in 2G networks include base transceiver stations (BTS for short), devices that provide base station functions in 3G networks include Node Bs (NodeBs), and devices that provide base station functions in 4G networks include evolved In wireless local area networks (WLAN), the device that provides base station functions is an access point (AP). The device gNB that provides base station functions in NR), and the node B (ng-eNB) that continues to evolve, wherein the gNB and the terminal use NR technology for communication, and the ng-eNB and the terminal use E-UTRA (Evolved Universal Terrestrial (Evolved Universal Terrestrial). Radio Access) technology to communicate, both gNB and ng-eNB can be connected to the 5G core network (core network, CN for short). The base station in the embodiment of the present invention also includes a device and the like that provide the function of the base station in a new communication system in the future. This embodiment of the present invention does not limit this.

The embodiment of the present invention defines the unidirectional communication link from the network equipment to the user equipment as the downlink, the data transmitted on the downlink is the downlink data, the transmission direction of the downlink data is called the downlink direction, and the user equipment receives the downlink through the downlink carrier The unidirectional communication link from the user equipment to the network equipment is the uplink, the data transmitted on the uplink is the uplink data, the transmission direction of the uplink data is called the uplink direction, and the user equipment sends the uplink data through the uplink carrier.

Example 1

FIG. 3 is a schematic flowchart of a carrier determination method provided in this embodiment. The method may be executed by a carrier determination apparatus, and the apparatus may be implemented in software and/or hardware, and the apparatus may include part or all of user equipment and network equipment. . The carrier determination method will be described below in conjunction with the user equipment and the network equipment as execution subjects.

As shown in FIG. 3 , the carrier determination method provided in this embodiment includes the following steps S101 to S104:

Step S101, the network device broadcasts system information. The system information includes the index configuration information of the downlink carrier corresponding to each beam in the cell where the user equipment is located, and the index configuration information of the carrier associated with the downlink carrier that transmits the narrowband reference signal.

In step S101, the network device configures a downlink carrier for sending a narrowband reference signal (Narrowband Reference Signal, NRS) for each beam in the cell where the user equipment is located, and configures an associated carrier for the downlink carrier that sends the NRS, and The downlink carrier that sends the NRS and the index configuration information of the associated carrier are delivered by broadcasting a system message.

Step S102, the user equipment measures the signal quality of the downlink carrier that transmits the narrowband reference signal, and determines the target downlink carrier according to the measured signal quality. In a specific implementation, the user equipment receives the system information broadcast by the network device, determines the downlink carrier for sending the NRS according to the system information, and measures the signal quality thereof, thereby determining the target downlink carrier.

The signal quality of the downlink carrier that sends the NRS may include at least one of the following: Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Received Signal Strength Indicator (Received Signal Receiving Power, RSRP) Signal Strength Indicator, RSSI).

In an optional implementation manner of step S102, the system information broadcast by the network device further includes a reference threshold of signal quality. In this embodiment, step S102 specifically includes: if the signal quality of the downlink carrier that transmits the narrowband reference signal is greater than the reference threshold, using the downlink carrier as the target downlink carrier.

In a specific implementation, if there are multiple downlink carriers with signal quality greater than the above reference threshold for transmitting narrowband reference signals, the downlink carrier with the best signal quality among the multiple downlink carriers is determined as the target downlink carrier.

In a specific implementation, if there is no downlink carrier whose signal quality is greater than the above-mentioned reference threshold for transmitting the narrowband reference signal, the user equipment does not need to determine the target downlink carrier.

Step S103, the user equipment determines the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier.

Step S104, the user equipment transmits the target message to the network device through the determined carrier.

Understandably, in the NB-IoT IoT protocol, the data transmission bandwidth between user equipment and network equipment is a physical resource block (Physical Resource Block, PRB). A physical resource block is also called a carrier. In the networking protocol, the transmission bandwidth between user equipment and network equipment is a narrow band. It should be noted that, if the IoT protocol is eMTC, the carrier wave in the embodiment of the present invention is equivalent to the narrowband.

In an optional implementation manner, the carriers associated with the downlink carriers sending the narrowband reference signals are all uplink carriers configured with physical random access channel resources, that is, PRACH resources, and the target message is a random access message. The above step S103 specifically includes: randomly determining an uplink carrier for sending a random access message among uplink carriers associated with the target downlink carrier and configured with physical random access channel resources.

In this embodiment, the user equipment may send a random access message to the network device through the uplink carrier randomly determined in step S103 during the random access process, where the random access message may include a random preamble Msg1. The network equipment configures multiple associated uplink carriers for the downlink carriers that transmit NRS corresponding to each beam in the cell where the user equipment is located, and configures physical random access channel resources for these uplink carriers, so as to meet the requirements of the satellite Internet of Things scenario. The user equipment needs to switch beams frequently. Specifically, as the beam where the user equipment is located changes, the user equipment can determine the target downlink carrier according to the real-time measurement of the signal quality of the downlink carrier that transmits the NRS. In the uplink carrier, the uplink carrier for sending the random access message is determined, thereby improving the stability of satellite communication.

In the example shown in FIG. 4, the network device configures a downlink carrier (D11/D12/D13) for transmitting NRS for each of the three beams of the cell where the user equipment is located, and for each downlink carrier for transmitting NRS Two associated uplink carriers are configured, wherein PRACH resources have been configured on the associated uplink carriers. Specifically, the downlink carrier D11 is associated with the uplink carriers U1 and U2, the downlink carrier D12 is associated with the uplink carriers U3 and U4, and the downlink carrier D13 is associated with the uplink carriers U5 and U6. The user equipment measures the signal qualities of the downlink carriers D11, D12, and D13 respectively, and compares the measurement results with a reference threshold A, where the reference threshold A is included in the system information broadcast by the network equipment. The comparison result is: the signal quality of the downlink carrier D11 is greater than the reference threshold A, and the signal qualities of the downlink carriers D12 and D13 are both lower than the reference threshold A, the user equipment determines the downlink carrier D11 as the target downlink carrier, and the uplink carrier D11 is associated with the downlink carrier D11. An uplink carrier is randomly determined among the carriers U1 and U2 for sending the random access preamble Msg1.

In another optional implementation manner, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the location where the user equipment is located. The paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal corresponding to each beam in the cell, and configuration information such as paging parameters corresponding to each beam. The above-mentioned step S103 specifically includes: according to the identification information of the user equipment, the paging parameter corresponding to the target beam, and the paging weight of the downlink paging carrier associated with the target downlink carrier, in the target downlink carrier associated with the target downlink carrier. A downlink paging carrier used for receiving a paging message is determined among the associated downlink paging carriers; wherein, the target beam is a beam corresponding to the target downlink carrier.

In another optional implementation manner, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the location where the user equipment is located. The paging weight of the downlink carrier for transmitting the narrowband reference signal corresponding to each beam in the cell, the paging weight of the downlink paging carrier associated with the downlink carrier for transmitting the narrowband reference signal, and the paging parameter corresponding to each beam; The above step S103 specifically includes: paging according to the identification information of the user equipment, the paging parameters corresponding to the target beam, the paging weight of the target downlink carrier, and the downlink paging carrier associated with the target downlink carrier weight, determining the downlink paging carrier used for receiving the paging message in the target downlink carrier and the downlink paging carrier associated with the target downlink carrier; wherein, the target beam is corresponding to the target downlink carrier beam.

It can be understood that the target downlink carrier can also be used for receiving paging messages. In this embodiment, a carrier for receiving paging messages is determined from the target downlink carrier and its associated downlink paging carrier.

The above-mentioned paging parameters may include the number of paging frames PF in each DRX cycle and the number of paging occasions PO in each paging frame PF.

In a specific example, the identification information of the user equipment is UE_ID, and the value is IMSI mod1024. The IMSI (International Mobile Subscriber Identity, International Mobile Subscriber Identity, International Mobile Subscriber Identity) of each user is unique. IMSI is represented by a sequence of numbers 0 to 9 and stored in the SIM/USIM card. It should be noted that, if the user equipment does not have a SIM/USIM card inserted, then there is no IMSI, and the UE_ID is fixed at 0 at this time.

In an example of specific implementation, the carrier for receiving the paging message is determined among the target downlink carrier and its associated downlink paging carrier according to the following formula:

(floor(UE_ID/(N*Ns))mod W)<(W(0)+W(1)+…+W(n));

where floor is the rounding down function, mod is the remainder function, W(i) is the paging weight of the target downlink carrier and its associated downlink paging carrier whose carrier index is i, where i=0,1 ,2,...,n, n is less than or equal to the sum of the number of the target downlink carrier and its associated downlink paging carriers, W is the sum of the paging weights of the target downlink carrier and all its associated downlink paging carriers, and N and Ns are paging parameters corresponding to the target beam, wherein the target beam is the beam corresponding to the target downlink carrier, N is the number of paging frames PF in each DRX cycle, and Ns is the number of paging frames PF in each paging frame Number of paging occasion POs.

It should be noted that the carrier index is incremented from 0 until the above formula is satisfied for the first time, that is, the left side of the formula is less than the right side of the formula, the carrier index X at this time is recorded, and then the carrier with the carrier index X is determined to receive the paging message.

In this embodiment, the network device configures paging weights and paging parameters separately for each beam in the cell where the user equipment is located, so as to meet the requirement for the user equipment to frequently switch beams in the satellite Internet of Things scenario. When the beam where it is located changes, the user equipment can determine the target downlink carrier according to the real-time measured signal quality of the downlink carrier sending NRS, and determine the carrier for receiving paging messages according to the beam corresponding to the target downlink carrier, thereby improving the stability of satellite communication .

In the example shown in FIG. 5 , the network device configures a downlink carrier (D21/D22/D23) for transmitting NRS for each of the three beams in the cell where the user equipment is located, and for each downlink carrier for transmitting NRS Two associated downlink paging carriers are configured. Specifically, downlink carrier D21 is associated with downlink paging carriers D1 and D2, downlink carrier D22 is associated with downlink paging carriers D3 and D4, and downlink carrier D23 is associated with downlink paging carriers D5 and D6. The user equipment measures the signal qualities of the downlink carriers D21, D22, and D23 respectively, and compares the measurement results with a reference threshold B, where the reference threshold B is included in the system information broadcast by the network equipment. The comparison result is: the signal quality of the downlink carrier D22 is less than the reference threshold B, the signal quality of the downlink carriers D21 and D23 are both greater than the reference threshold B, and the signal quality of the downlink carrier D21 is greater than the signal quality of the downlink carrier D23, and the user equipment sets the signal quality to the highest. The good downlink carrier D21 is determined as the target downlink carrier, and a carrier is determined among the downlink carrier D21 and its associated downlink paging carriers D1 and D2 for receiving paging messages. Specifically, the carrier receiving the paging message is determined according to the identification information UE_ID of the user equipment, the paging weight of the downlink carrier D21, the paging weights of the downlink paging carriers D1 and D2, and the paging parameters configured by the network equipment for the target beam. The target beam in this example is the beam corresponding to the downlink carrier D21.

This embodiment further provides a carrier determination device 60 , as shown in FIG. 6 , including a system information receiving module 61 , a first carrier determination module 62 and a second carrier determination module 63 .

The system information receiving module is used to receive the system information broadcast by the network equipment, wherein the system information includes the index configuration information of the downlink carrier for transmitting the narrowband reference signal corresponding to each beam in the cell where the user equipment is located, and the information related to the transmission of the narrowband reference signal. The index configuration information of the carrier associated with the downlink carrier.

The first carrier determination module is configured to determine the target downlink carrier according to the signal quality of the downlink carrier on which the narrowband reference signal is sent.

In an optional implementation manner, the system information further includes a reference threshold value of signal quality; the first carrier determination module is specifically configured to be used when the signal quality of the downlink carrier sending the narrowband reference signal is greater than the reference threshold value Next, the downlink carrier is used as the target downlink carrier.

In an optional implementation manner, the first carrier determination module is specifically configured to determine, in a case where there are multiple downlink carriers that transmit narrowband reference signals whose signal quality is greater than the reference threshold, among the multiple downlink carriers The downlink carrier with the best signal quality is used as the target downlink carrier.

The second carrier determination module is configured to determine the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier.

In an optional implementation manner, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all uplink carriers configured with physical random access channel resources, and the target message is a random access message; the second The carrier determination module is specifically configured to randomly determine an uplink carrier for sending a random access message among uplink carriers configured with physical random access channel resources associated with the target downlink carrier.

In another optional implementation manner, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the location where the user equipment is located. The paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal corresponding to each beam in the cell, and configuration information such as paging parameters corresponding to each beam;

The second carrier determination module is specifically configured to, according to the identification information of the user equipment, the paging parameters corresponding to the target beam and the paging weight of the downlink paging carrier associated with the target downlink carrier, A downlink paging carrier used for receiving a paging message is determined among downlink paging carriers associated with the target downlink carrier; wherein, the target beam is a beam corresponding to the target downlink carrier.

In another optional implementation manner, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the location where the user equipment is located. The paging weight of the downlink carrier that transmits the narrowband reference signal corresponding to each beam in the cell, the paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal, and the paging parameters corresponding to each beam, etc. configuration information;

The second carrier determination module is specifically configured to, according to the identification information of the user equipment, the paging parameters corresponding to the target beam, the paging weight of the target downlink carrier, and the downlink paging associated with the target downlink carrier The paging weight of the carrier, the downlink paging carrier used for receiving the paging message is determined in the target downlink carrier and the downlink paging carrier associated with the target downlink carrier;

The target beam is a beam corresponding to the target downlink carrier.

This embodiment also provides an apparatus for broadcasting system information. The apparatus for broadcasting system information is used for broadcasting system information, wherein the system information includes the downlink carrier corresponding to each beam in the cell where the user equipment is located, and which transmits the narrowband reference signal. The index configuration information, and the index configuration information of the carrier associated with the downlink carrier that transmits the narrowband reference signal; wherein, the user equipment is the user equipment in the foregoing embodiment.

In an optional implementation manner, the system information further includes a reference threshold of signal quality.

In an optional implementation manner, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all uplink carriers configured with physical random access channel resources.

In another optional implementation manner, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the location where the user equipment is located. The paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal corresponding to each beam in the cell, and configuration information such as paging parameters corresponding to each beam.

In another optional implementation manner, the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information further includes the location where the user equipment is located. The paging weight of the downlink carrier that transmits the narrowband reference signal corresponding to each beam in the cell, the paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal, and the paging parameters corresponding to each beam, etc. configuration information.

It should be noted that the above-mentioned carrier determination device or system information broadcasting device may specifically be a separate chip, a chip module or a terminal, or may be a chip or a chip module integrated in the terminal.

Regarding each module/unit included in the carrier determination apparatus or the system information broadcasting apparatus described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a part of a software module/unit, a part of which is Hardware modules/units. For example, for each device or product applied to or integrated in a chip, each module/unit included therein may be implemented by hardware such as circuits, or at least some modules/units may be implemented by a software program. Running on the processor integrated inside the chip, the remaining part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the chip module, each module/unit contained therein can be implemented using circuits, etc. It is implemented in hardware, and different modules/units can be located in the same component (such as a chip, circuit module, etc.) or in different components of the chip module, or at least some of the modules/units can be implemented in a software program, and the software program runs For the processor integrated in the chip module, the remaining part of the modules/units can be implemented by hardware such as circuits; for each device and product applied to or integrated in the terminal, each module/unit included can be implemented by hardware such as circuits. Different modules/units may be located in the same component (for example, a chip, circuit module, etc.) or in different components in the terminal, or at least some modules/units may be implemented by a software program, and the software program runs on the terminal Internally integrated processor, the remaining part of the modules/units can be implemented in hardware such as circuits.

Example 2

FIG. 7 is a schematic structural diagram of a user equipment according to this embodiment. The user equipment includes at least one processor, a memory communicatively coupled to the at least one processor, and a transceiver for communicating with other devices. Wherein, the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the carrier determination method described in Embodiment 1 . The user equipment 3 shown in FIG. 7 is only an example, and should not impose any limitations on the functions and scope of use of the embodiments of the present invention.

The user equipment in the embodiment of the present invention may be a mobile phone, a tablet computer, a PDA (Personal Digital Assistant, personal digital assistant), a POS (Point of Sales, sales terminal), a vehicle terminal, a wearable device, and the like.

The components of the user equipment 3 may include, but are not limited to: the above-mentioned at least one processor 4 , the above-mentioned at least one memory 5 , and a bus 6 connecting different system components (including the memory 5 and the processor 4 ).

The bus 6 includes a data bus, an address bus and a control bus.

The memory 5 may include volatile memory, such as random access memory (RAM) 51 and/or cache memory 52 , and may further include read only memory (ROM) 53 .

The memory 5 may also include a program/utility 55 having a set (at least one) of program modules 54 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, which An implementation of a network environment may be included in each or some combination of the examples.

The processor 4 executes various functional applications and data processing by running the computer program stored in the memory 5, such as the carrier wave determination method in Embodiment 1 of the present invention.

The user device 3 may also communicate with one or more external devices 7 (eg keyboards, pointing devices, etc.). Such communication may take place through an input/output (I/O) interface 8 . Furthermore, the user equipment 3 may also communicate with one or more networks (eg a local area network (LAN), a wide area network (WAN) and/or a public network such as the Internet) through the network adapter 9 . As shown in FIG. 7 , the network adapter 9 communicates with other modules of the user equipment 3 through the bus 6 . It should be understood that, although not shown in FIG. 7, other hardware and/or software modules may be used in conjunction with the user equipment 3, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk arrays) ) systems, tape drives, and data backup storage systems.

It should be noted that although several units/modules or sub-units/modules of the user equipment are mentioned in the above detailed description, this division is merely exemplary and not mandatory. Indeed, the features and functions of two or more units/modules described above may be embodied in one unit/module according to embodiments of the present invention. Conversely, the features and functions of one unit/module described above may be further subdivided to be embodied by multiple units/modules.

Example 3

An embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions, where the computer instructions are used to cause the computer to execute the carrier wave determination method in Embodiment 1.

Wherein, the readable storage medium may include, but is not limited to, a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device, or any of the above suitable combination.

In a possible implementation manner, the present invention can also be implemented in the form of a program product, which includes program codes, when the program product runs on a terminal device, the program code is used to cause the terminal device to execute the implementation Carrier determination method in Embodiment 1.

Wherein, the program code for executing the present invention can be written in any combination of one or more programming languages, and the program code can be completely executed on the user equipment, partially executed on the user equipment, as an independent The software package executes on the user's device, partly on the user's device, partly on the remote device, or entirely on the remote device.

Although the specific embodiments of the present invention are described above, those skilled in the art should understand that this is only an illustration, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (23)

1. a carrier determination method, is characterized in that, comprises the following steps: Receive system information broadcast by the network device, where the system information includes index configuration information of the downlink carrier that transmits the narrowband reference signal corresponding to each beam in the cell where the user equipment is located, and the information associated with the downlink carrier that transmits the narrowband reference signal. Carrier index configuration information; Determine the target downlink carrier according to the signal quality of the downlink carrier that transmits the narrowband reference signal; The carrier used for transmitting the target message is determined according to the carrier associated with the target downlink carrier. 2. The method for determining a carrier according to claim 1, wherein the system information further comprises a reference threshold of signal quality; and determining the target downlink carrier according to the signal quality of the downlink carrier that transmits the narrowband reference signal, specifically comprising: If the signal quality of the downlink carrier that sends the narrowband reference signal is greater than the reference threshold, the downlink carrier is used as the target downlink carrier. 3. The carrier determination method according to claim 2, wherein if there are multiple downlink carriers that transmit narrowband reference signals whose signal quality is greater than the reference threshold, then determine the one with the best signal quality among the multiple downlink carriers. The downlink carrier is used as the target downlink carrier. 4. The carrier determination method according to any one of claims 1 to 3, wherein the carriers associated with the downlink carriers that transmit the narrowband reference signals are all uplink carriers configured with physical random access channel resources, so The target message is a random access message; The determining the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier specifically includes: The uplink carrier used for sending the random access message is randomly determined among the uplink carriers associated with the target downlink carrier that are configured with physical random access channel resources. 5. The carrier determination method according to claim 4, wherein the random access message comprises a random access preamble Msg1. 6. The carrier determination method according to any one of claims 1-3, wherein the carrier associated with the downlink carrier that transmits the narrowband reference signal is a downlink paging carrier, and the target message is a paging message , the system information further includes the paging weight of the downlink paging carrier associated with the downlink carrier for transmitting the narrowband reference signal corresponding to each beam in the cell where the user equipment is located, and the paging parameter corresponding to each beam; The determining the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier specifically includes: According to the identification information of the user equipment, the paging parameters corresponding to the target beam, and the paging weight of the downlink paging carrier associated with the target downlink carrier, the downlink paging carrier associated with the target downlink carrier determine the downlink paging carrier used for receiving paging messages; The target beam is a beam corresponding to the target downlink carrier. 7. The carrier determination method according to any one of claims 1-3, wherein the carrier associated with the downlink carrier that transmits the narrowband reference signal is a downlink paging carrier, and the target message is a paging message , the system information further includes the paging weight of the downlink carrier that transmits the narrowband reference signal corresponding to each beam in the cell where the user equipment is located, and the paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal. weights and paging parameters corresponding to each beam; The determining the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier specifically includes: According to the identification information of the user equipment, the paging parameters corresponding to the target beam, the paging weight of the target downlink carrier and the paging weight of the downlink paging carrier associated with the target downlink carrier, the target Determine the downlink paging carrier used for receiving the paging message from the downlink carrier and the downlink paging carrier associated with the target downlink carrier; The target beam is a beam corresponding to the target downlink carrier. 8. The carrier determination method according to claim 6 or 7, wherein the paging parameters include the number of paging frames in each DRX cycle and the number of paging occasions in each paging frame. 9. A carrier determination device, comprising: A system information receiving module, configured to receive system information broadcast by network equipment, wherein the system information includes index configuration information of the downlink carrier corresponding to each beam in the cell where the user equipment is located for transmitting the narrowband reference signal, and information related to the transmission of the narrowband reference signal The index configuration information of the carrier associated with the downlink carrier of the signal; a first carrier determination module, configured to determine a target downlink carrier according to the signal quality of the downlink carrier that sends the narrowband reference signal; The second carrier determination module is configured to determine the carrier used for transmitting the target message according to the carrier associated with the target downlink carrier. 10 . The carrier determination apparatus according to claim 9 , wherein the system information further comprises a reference threshold value of signal quality; the first carrier determination module is specifically configured to transmit the signal quality of the downlink carrier of the narrowband reference signal. 11 . When the value is greater than the reference threshold, the downlink carrier is used as the target downlink carrier. 11 . The carrier determination apparatus according to claim 10 , wherein the first carrier determination module is specifically configured to, when there are multiple downlink carriers with signal quality greater than the reference threshold for transmitting narrowband reference signals, 11 . Among the multiple downlink carriers, the downlink carrier with the best signal quality is determined as the target downlink carrier. 12. The carrier determination apparatus according to any one of claims 9-11, wherein the carriers associated with the downlink carriers that transmit narrowband reference signals are all uplink carriers configured with physical random access channel resources, and the carrier The target message is a random access message; The second carrier determination module is specifically configured to randomly determine an uplink carrier for sending a random access message among uplink carriers associated with the target downlink carrier that are configured with physical random access channel resources. 13. The carrier determination apparatus according to any one of claims 9-11, wherein the carrier associated with the downlink carrier that transmits the narrowband reference signal is a downlink paging carrier, and the target message is a paging message , the system information further includes the paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal corresponding to each beam in the cell where the user equipment is located, and the paging parameter corresponding to each beam; The second carrier determination module is specifically configured to, according to the identification information of the user equipment, the paging parameters corresponding to the target beam and the paging weight of the downlink paging carrier associated with the target downlink carrier, Determine the downlink paging carrier used for receiving the paging message among the downlink paging carriers associated with the target downlink carrier; The target beam is a beam corresponding to the target downlink carrier. 14. The carrier determination apparatus according to any one of claims 9-11, wherein the carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, and the target message is a paging message , the system information further includes the paging weight of the downlink carrier that transmits the narrowband reference signal corresponding to each beam in the cell where the user equipment is located, and the paging weight of the downlink paging carrier associated with the downlink carrier that transmits the narrowband reference signal. weights and paging parameters corresponding to each beam; The second carrier determination module is specifically configured to, according to the identification information of the user equipment, the paging parameters corresponding to the target beam, the paging weight of the target downlink carrier, and the downlink paging associated with the target downlink carrier The paging weight of the carrier, the downlink paging carrier used for receiving the paging message is determined in the target downlink carrier and the downlink paging carrier associated with the target downlink carrier; The target beam is a beam corresponding to the target downlink carrier. 15. A user equipment, comprising: at least one processor; a memory communicatively coupled to the at least one processor; and Transceivers for communicating with other devices; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to execute any of claims 1-8 The carrier determination method. 16. A method for broadcasting system information, comprising the following steps: Broadcast system information, wherein the system information includes index configuration information of the downlink carrier corresponding to each beam that transmits the narrowband reference signal in the cell where the user equipment is located, and the index configuration of the carrier associated with the downlink carrier that transmits the narrowband reference signal information; Wherein, the user equipment is the user equipment according to claim 15 . 17. The system information broadcasting method according to claim 16, wherein the system information further comprises a reference threshold of signal quality. 18. The system information broadcasting method according to claim 16 or 17, wherein the carriers associated with the downlink carriers that transmit the narrowband reference signals are all uplink carriers configured with physical random access channel resources; or, The carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information also includes the transmit narrowband reference corresponding to each beam in the cell where the user equipment is located. The paging weight of the downlink paging carrier associated with the downlink carrier of the signal, and the paging parameter corresponding to each beam; or, The carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information also includes the transmit narrowband reference corresponding to each beam in the cell where the user equipment is located. The paging weight of the downlink carrier of the signal, the paging weight of the downlink paging carrier associated with the downlink carrier transmitting the narrowband reference signal, and the paging parameter corresponding to each beam. 19. An apparatus for broadcasting system information, characterized in that the apparatus for broadcasting system information is used for broadcasting system information, wherein the system information includes downlink carriers for transmitting narrowband reference signals corresponding to each beam in a cell where user equipment is located The index configuration information of , and the index configuration information of the carrier associated with the downlink carrier that transmits the narrowband reference signal; Wherein, the user equipment is the user equipment according to claim 15 . 20. The system information broadcasting apparatus according to claim 19, wherein the system information further comprises a reference threshold of signal quality. 21. The system information broadcasting apparatus according to claim 19 or 20, wherein the carriers associated with the downlink carriers that transmit the narrowband reference signals are all uplink carriers configured with physical random access channel resources; or, The carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information also includes the transmit narrowband reference corresponding to each beam in the cell where the user equipment is located. The paging weight of the downlink paging carrier associated with the downlink carrier of the signal, and the paging parameter corresponding to each beam; or, The carriers associated with the downlink carriers that transmit the narrowband reference signals are all downlink paging carriers, the target message is a paging message, and the system information also includes the transmit narrowband reference corresponding to each beam in the cell where the user equipment is located. The paging weight of the downlink carrier of the signal, the paging weight of the downlink paging carrier associated with the downlink carrier transmitting the narrowband reference signal, and the paging parameter corresponding to each beam. 22. A network device, comprising: at least one processor; a memory communicatively coupled to the at least one processor; and Transceivers for communicating with other devices; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to execute any of claims 16-18 The system information broadcasting method. 23. A non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to cause the computer to perform the carrier wave determination method according to any one of claims 1-8, or The system information broadcasting method according to any one of claims 16-18.

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