WO2022205232A1 - 覆盖增强等级的确定方法、配置方法、装置及存储介质 - Google Patents

覆盖增强等级的确定方法、配置方法、装置及存储介质 Download PDF

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WO2022205232A1
WO2022205232A1 PCT/CN2021/084758 CN2021084758W WO2022205232A1 WO 2022205232 A1 WO2022205232 A1 WO 2022205232A1 CN 2021084758 W CN2021084758 W CN 2021084758W WO 2022205232 A1 WO2022205232 A1 WO 2022205232A1
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parameter
coverage
terminal
level
type
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PCT/CN2021/084758
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English (en)
French (fr)
Inventor
胡奕
李海涛
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2021/084758 priority Critical patent/WO2022205232A1/zh
Priority to CN202180094200.6A priority patent/CN116897553A/zh
Publication of WO2022205232A1 publication Critical patent/WO2022205232A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18Network planning tools

Definitions

  • the present application relates to the field of communications, and in particular, to a method, configuration method, device and storage medium for determining coverage enhancement level.
  • the third generation partnership project (third Generation Partnership Project, 3GPP) is studying non-terrestrial communication network (Non-Terrestrial Network, NTN) technology.
  • NTN non-Terrestrial Network
  • communication services are generally provided to ground terminals (User Equipment, UE) by means of satellite communication.
  • UE User Equipment
  • the reference signal received power (Reference Signal Receiving Power, RSRP) when the UE is at the center of the cell is significantly higher than the RSRP when the UE is at the edge of the cell. Due to the obvious “near-far effect", the UE can select the coverage enhancement level in the random access process based on the RSRP measurement.
  • RSRP Reference Signal Receiving Power
  • Embodiments of the present application provide a method, configuration method, apparatus, and storage medium for determining coverage enhancement level.
  • the technical solution is as follows:
  • a method for determining a coverage enhancement level is provided, the method is executed by a terminal, and the method includes:
  • the coverage enhancement level is determined based on the location parameter of the terminal; wherein the location parameter is used to reflect the location of the terminal.
  • a method for configuring a coverage enhancement level is provided, the method is performed by a network device, and the method includes:
  • the configuration information is sent to the terminal, where the configuration information includes parameters required for determining the coverage enhancement level according to the location parameter configured for the terminal, and the location parameter is used to reflect the location of the terminal.
  • an apparatus for determining a coverage enhancement level includes:
  • the first processing module is configured to determine the coverage enhancement level based on the location parameter of the terminal; wherein the location parameter is used to reflect the location of the terminal.
  • an apparatus for configuring a coverage enhancement level includes:
  • the second sending module is configured to send configuration information to the terminal, where the configuration information includes parameters required for determining the coverage enhancement level according to the location parameter configured for the terminal, and the location parameter is used to reflect the location of the terminal.
  • a terminal is provided, and the terminal includes:
  • transceiver connected to the processor
  • the processor is configured to load and execute the executable instructions to implement the method for determining the coverage enhancement level as described in various aspects above.
  • a network device includes:
  • transceiver connected to the processor
  • the processor is configured to load and execute executable instructions to implement the method of configuring the overlay enhancement level as described in the various aspects above.
  • a computer storage medium stores at least one instruction, at least one piece of program, code set or instruction set, the above-mentioned at least one instruction, at least one piece of program,
  • the code set or instruction set is loaded and executed by the processor to implement the method for determining the coverage enhancement level, or the method for configuring the coverage enhancement level, as described in various aspects above.
  • the method provides a way to determine the coverage enhancement level based on the location parameters of the UE, ensures the random access performance of the UE, and can clearly distinguish the UE located in the center of the cell from the UE located at the edge of the cell based on the location parameters of the UE Therefore, a lower coverage enhancement level can be selected for UEs in the center of the cell, and a smaller number of repeated transmissions can be used to reduce the delay of accessing the network; and a higher coverage enhancement level can be selected for UEs at the edge of the cell. Large number of repeated transmissions to improve random access success rate.
  • FIG. 1 is a schematic diagram of an NTN scenario based on transparent transmission of payloads according to an exemplary embodiment
  • FIG. 2 is a schematic diagram of a regeneration load-based NTN scenario according to an exemplary embodiment
  • FIG. 3 is a flowchart of a method for determining a coverage enhancement level according to an exemplary embodiment
  • FIG. 4 is a flowchart of a method for determining a coverage enhancement level according to another exemplary embodiment
  • FIG. 5 is a flowchart of a method for determining a coverage enhancement level according to another exemplary embodiment
  • FIG. 6 is a flowchart of a method for determining a coverage enhancement level according to another exemplary embodiment
  • FIG. 7 is a flowchart of a method for determining a coverage enhancement level according to another exemplary embodiment
  • FIG. 8 is a flowchart of a method for determining a coverage enhancement level according to another exemplary embodiment
  • FIG. 9 is a flowchart of a method for determining a coverage enhancement level according to another exemplary embodiment.
  • FIG. 10 is a flowchart of a method for configuring a coverage enhancement level according to an exemplary embodiment
  • FIG. 11 is a schematic diagram showing the correspondence between the location parameter threshold and the coverage enhancement level according to an exemplary embodiment
  • FIG. 12 is a schematic diagram showing the correspondence between the location parameter threshold and the coverage enhancement level according to another exemplary embodiment
  • FIG. 13 is a schematic diagram showing the correspondence between the location parameter threshold and the coverage enhancement level according to another exemplary embodiment
  • FIG. 14 is a block diagram of an apparatus for determining a coverage enhancement level according to an exemplary embodiment
  • FIG. 15 is a block diagram of an apparatus for configuring a coverage enhancement level according to an exemplary embodiment
  • FIG. 16 is a schematic structural diagram of a terminal according to an exemplary embodiment.
  • Satellite communication is generally used to provide communication services to terrestrial UEs.
  • satellite communication has many unique advantages.
  • satellite communication is not limited by the user's geographical area; for example, general terrestrial communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be set up, or areas that are not covered by communication due to sparse population, while for satellite communication, Since a satellite can cover a large ground, and the satellite can orbit around the earth, theoretically every corner of the earth can be covered by satellite communications.
  • satellite communication has great social value.
  • Satellite communication can be covered at low cost in remote mountainous areas and poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital divide with developed regions. , to promote the development of these areas.
  • the satellite communication distance is long, and the communication cost does not increase significantly when the communication distance increases.
  • satellite communication has high stability and is not limited by natural disasters.
  • LEO Low-Earth Orbit
  • MEO Medium-Earth Orbit
  • GEO Geostationary Earth Orbit
  • HEO High Elliptical Orbit
  • the altitudes of low-orbit satellites range from 500 kilometers (km) to 1500 km, and the corresponding orbital periods are about 1.5 hours to 2 hours.
  • the signal propagation delay of single-hop communication between UEs is generally less than 20 milliseconds (ms).
  • the maximum satellite viewing time is 20 minutes.
  • the signal propagation distance is short, the link loss is small, and the transmit power requirements of the UE are not high.
  • the signal propagation delay of single-hop communication between UEs is generally 250ms.
  • communication satellites use multiple beams to cover the ground.
  • a communication satellite can form tens or even hundreds of beams to cover the ground; a satellite beam can cover a diameter of tens to above Hundred kilometers of ground area.
  • FIG. 1 shows a schematic diagram of an NTN scenario based on transparent transmission of payloads
  • FIG. 2 shows a schematic diagram of an NTN scenario based on regenerated payloads.
  • An NTN network consists of the following network elements:
  • One or more network devices 16 for connecting the satellites 14 to the data network 18 on the ground.
  • Feeder Link The link used for communication between the network device 16 and the satellite 14;
  • Service Link A link for communication between UE 12 and satellite 14;
  • Satellite 14 From the functions it provides, it can be divided into two types: transparent transmission load and regenerative load.
  • ⁇ Transparent load Only provide the functions of wireless frequency filtering, frequency conversion and amplification. It only provides transparent forwarding of the signal, and does not change the waveform signal it forwards.
  • ⁇ Regeneration load In addition to providing the functions of radio frequency filtering, frequency conversion and amplification, it can also provide functions of demodulation/decoding, routing/conversion, encoding/modulation. It has part or all of the functions of a base station.
  • ISL Inter-Satellite Links, inter-satellite link
  • NB-IoT Narrow Band Internet of Things
  • eMTC Enhanced Machine Type Communication
  • a coverage enhancement level (Coverage Enhancement Level, CE Level) is introduced in NB-IoT and eMTC.
  • CE Level Coverage Enhancement Level
  • NB-IoT three levels of CE Level 0, CE Level 1, and CE Level 2 are defined, which correspond to signal attenuations of 144 decibels (dB), 154 dB, and 164 dB, respectively.
  • CE Level 0 is called normal coverage
  • the remaining CE Levels are called enhanced coverage.
  • the corresponding number of repeated transmissions will be selected according to its CE Level.
  • the RSRP when the UE is at the center of the cell is significantly higher than that when the UE is at the edge of the cell. Due to the obvious “near-far effect", the selection of random access type can be performed based on RSRP measurement.
  • the coverage level is selected based on RSRP measurement, on the one hand, it is difficult to set an appropriate RSRP threshold for coverage level selection. For example, in the random access process, for users at the center of the cell, the coverage enhancement level is selected due to the low measured RSRP, and a larger number of repeated transmissions is used, which increases the random access delay; for users at the edge of the cell, Because the measured RSRP is too high, a lower coverage level is initially selected, which may increase the number of random access attempts or directly cause random access failure, which seriously affects the user experience.
  • FIG. 3 shows a flowchart of a method for determining a coverage enhancement level provided by an exemplary embodiment of the present application.
  • the method is applied in an NTN scenario and executed by a UE, and the method includes:
  • Step 201 Determine the coverage enhancement level based on the location parameter of the UE; wherein the location parameter is used to reflect the location of the UE.
  • the above-mentioned location parameter is used to reflect the geographic location of the UE
  • the above-mentioned position parameter is used to reflect at least one of the relative position, relative distance, and relative inclination of the UE relative to the cell serving satellite;
  • the above-mentioned position parameter is used to reflect the relative position of the UE with respect to the ground reference point of the center of the satellite serving cell;
  • the location of the UE in the satellite serving cell is mapped to the location of the UE in the satellite serving cell.
  • the location parameter of the above UE includes at least one of the following:
  • the first round trip delay (Round Trip Time, RTT) between the UE and the cell serving satellite;
  • the above-mentioned satellite serving cell refers to the camping cell of the UE.
  • satellite serving cells can also be referred to as serving cells, cells, satellite cells, and ground reference points can also be referred to as reference points and ground marker points.
  • reference points and ground marker points can also be referred to as reference points and ground marker points.
  • the satellite serving cell The description may change, as may the description of the ground reference point.
  • the UE determines the coverage enhancement level based on the aforementioned first distance, or the UE determines the coverage enhancement level based on the aforementioned second distance, or the UE determines the coverage enhancement level based on the aforementioned third distance, or the UE determines the coverage enhancement level based on the aforementioned first RTT.
  • the coverage enhancement level, or the UE determines the coverage enhancement level based on the above-mentioned second RTT, or the UE determines the coverage enhancement level based on the above-mentioned tilt angle.
  • the cell serving satellites may be at least one of LEO satellites, MEO satellites, GEO satellites, and HEO satellites.
  • the coverage enhancement level is determined based on the location parameter of the UE, which ensures the random access performance of the UE. Differentiate between UEs located in the center of the cell and areas located at the edge of the cell, so that a lower coverage enhancement level can be selected for UEs in the center of the cell, and a smaller number of repeated transmissions can be used to reduce the delay of accessing the network; The UE selects a higher coverage enhancement level and uses a larger number of repeated transmissions to improve the success rate of random access.
  • the UE may determine the coverage enhancement level of the UE based on the range of the location parameter to which the location parameter belongs. Exemplarily, as shown in FIG. 4 , the determination of the coverage enhancement level provided by an exemplary embodiment of the present application is shown.
  • the method is applied in the NTN scenario and executed by the UE, and the method includes:
  • Step 301 During the random access process, the coverage enhancement level of the UE is determined based on the range of the location parameter to which the location parameter of the UE belongs.
  • the UE responds to The location parameter is greater than the Nth location parameter threshold, and the Nth coverage enhancement level is determined as the coverage enhancement level of the UE; in response to the location parameter being greater than the N-ith location parameter threshold and less than or equal to the N-i+1th location parameter threshold , the N-ith coverage enhancement level is determined as the coverage enhancement level of the UE; in response to the location parameter being less than or equal to the first location parameter threshold, the 0th level coverage enhancement level is determined as the coverage enhancement level of the UE; wherein, the N-ith coverage enhancement level is determined as the coverage enhancement level of the UE;
  • the position parameter threshold is less than the N-i+1th position parameter threshold, N is a positive integer greater than or equal to 1, and i is a positive integer less than N;
  • the UE determines the Nth coverage enhancement level as the coverage enhancement level of the UE; in response to the location parameter being greater than or equal to the N-ith location parameter threshold and less than the Nth-th location parameter threshold i+1 location parameter threshold, the N-ith coverage enhancement level is determined as the coverage enhancement level of the UE; in response to the location parameter being less than the first location parameter threshold, the 0th coverage enhancement level is determined as the coverage enhancement level of the UE.
  • the location parameter when the location parameter is greater than the Nth location parameter threshold, confirm that the UE is located at the Nth coverage enhancement level; when the location parameter is greater than the N-ith location parameter threshold and less than or equal to the N-i+1th location In the case of the parameter threshold, confirm that the UE is located at the N-ith level of coverage enhancement level; when the location parameter is less than or equal to the first location parameter threshold, confirm that the UE is located at the 0th level of coverage enhancement level;
  • the location parameter when the location parameter is greater than or equal to the Nth location parameter threshold, confirm that the UE is located at the Nth coverage enhancement level; when the location parameter is greater than or equal to the N-ith location parameter threshold and less than the N-i+1th location In the case of the parameter threshold, it is confirmed that the UE is in the N-ith coverage enhancement level; in the case that the location parameter is less than the first location parameter threshold, it is confirmed that the UE is in the 0th coverage enhancement level.
  • the location parameter may include at least one of the following:
  • the second round-trip delay between the UE and the terrestrial network is the second round-trip delay between the UE and the terrestrial network.
  • the UE responds If the location parameter is less than the Nth location parameter threshold, determine the Nth coverage enhancement level as the coverage enhancement level of the UE; in response to the location parameter being less than the N-ith location parameter threshold and greater than or equal to the N-i+1th location parameter threshold, the N-ith coverage enhancement level is determined as the coverage enhancement level of the UE; in response to the location parameter being greater than or equal to the first location parameter threshold, the 0th level coverage enhancement level is determined as the UE coverage enhancement level; wherein, the N-ith coverage enhancement level is determined as the coverage enhancement level of the UE;
  • the position parameter threshold is greater than the N-i+1th position parameter threshold, where N is a positive integer greater than or equal to 1, and i is a positive integer less than N;
  • the UE determines the Nth coverage enhancement level as the coverage enhancement level of the UE; in response to the location parameter being less than or equal to the N-ith location parameter threshold and greater than the Nth-th location parameter threshold i+1 location parameter threshold, the N-ith coverage enhancement level is determined as the coverage enhancement level of the UE; in response to the location parameter being greater than the first location parameter threshold, the 0th coverage enhancement level is determined as the coverage enhancement level of the UE.
  • the location parameter when the location parameter is less than the Nth location parameter threshold, confirm that the UE is located at the Nth coverage enhancement level; when the location parameter is less than the N-ith location parameter threshold and greater than or equal to the N-i+1th location In the case of the parameter threshold, confirm that the UE is located at the N-ith coverage enhancement level; when the location parameter is greater than or equal to the first location parameter threshold, confirm that the UE is located at the 0th level of coverage enhancement level;
  • the location parameter is less than or equal to the Nth location parameter threshold, confirm that the UE is located at the Nth coverage enhancement level; if the location parameter is less than or equal to the N-ith location parameter threshold and greater than the N-i+1th location In the case of the parameter threshold, confirm that the UE is at the N-ith coverage enhancement level; when the location parameter is greater than the first location parameter threshold, confirm that the UE is at the 0th coverage enhancement level.
  • the location parameter may include the inclination of the UE to the cell serving satellite relative to the horizontal direction of the ground, and the UE is located within the serving range of the cell serving satellite.
  • the first distance between the UE and the cell serving satellite the second distance between the UE and the ground network, the third distance between the UE and the ground reference point at the center of the satellite serving cell, and the distance between the UE and the cell serving satellite.
  • Each of the position parameters of the first RTT between the UE and the ground network, the second round-trip delay between the UE and the ground network, and the inclination of the UE to the cell serving satellite relative to the horizontal direction of the ground can be used alone in this embodiment to perform
  • the step of determining the enhancement level is covered to be implemented as a separate embodiment.
  • the method for determining the coverage enhancement level uses at least one parameter among the first distance, second distance, third distance, first RTT, second RTT, and inclination to divide the range of location parameters. , and then configure the coverage enhancement level based on the location parameter range.
  • the above location parameters can clearly reflect the "near-far effect", especially the above-mentioned first distance, second distance and inclination angle, which can more directly reflect the relative
  • the range of location parameters corresponding to each coverage enhancement level can be more clearly divided, so as to more accurately determine the coverage enhancement level of the UE during the random access process.
  • the coverage enhancement level of the UE can be determined more quickly.
  • the coverage enhancement level of the UE can also be determined based on the location parameters of the UE and the downlink signal quality of the UE.
  • the above step 303 can be performed from steps 3011 to 3012 To achieve, the steps are as follows:
  • Step 3011 in the random access process, under the condition that the location parameter belongs to the N+1th location parameter range, and the downlink signal quality of the UE belongs to at least one of the N+1th quality parameter ranges, the Nth The coverage enhancement level is used as the coverage enhancement level of the UE.
  • Step 3012 when the location parameter does not belong to any of the N-i+2th location parameter range to the N+1th location parameter range and the downlink signal quality does not belong to the N-i+2th quality parameter range to the Nth.
  • the location parameter belongs to the N-i+1 th location parameter range, and the downlink signal quality belongs to at least one of the N-i+1 th quality parameter range , and the N-ith coverage enhancement level is taken as the coverage enhancement level of the UE.
  • Step 3013 when the location parameter does not belong to any one of the range of the second location parameter to the N+1th location parameter range and the downlink signal quality does not belong to the range of the second quality parameter to the N+1th quality parameter range.
  • the coverage enhancement level of level 0 is taken as the coverage enhancement level of the UE.
  • N is a positive integer greater than or equal to 1
  • i is a positive integer less than N. That is to say, in the random access process, if the location parameter belongs to the N+1th location parameter range, and/or the downlink signal quality of the UE belongs to the N+1th quality parameter range, the UE will enhance the Nth level coverage.
  • the level is used as the coverage enhancement level of the UE; if the location parameter does not belong to the N+1th location parameter range and the downlink signal quality does not belong to the N+1th quality parameter range, then determine whether the location parameter belongs to the Nth location parameter range.
  • the downlink signal quality falls within the Nth quality parameter range; if the location parameter falls within the Nth location parameter range, and/or, the downlink signal quality falls within the Nth quality parameter range, the UE will enhance the N-1th level coverage
  • the level is used as the coverage enhancement level of the UE, and so on.
  • the above-mentioned downlink signal quality includes at least one of the following: RSRP; RSRQ; Signal to Interference plus Noise Ratio (SINR).
  • the configuration of the above parameter range includes the following two types:
  • the N+1th position parameter range refers to the parameter range greater than or equal to the Nth position parameter threshold
  • the N-i+1th position parameter range refers to the parameter range greater than or equal to the N-ith position parameter threshold and less than the N-ith position parameter threshold
  • the parameter range of +1 position parameter threshold, the first position parameter range refers to the parameter range less than the first position parameter threshold;
  • the N+1th quality parameter range refers to the parameter range less than the Nth quality parameter threshold,
  • the N-i+1th quality parameter range refers to the parameter range that is less than the N-ith quality parameter threshold and greater than or equal to the N-i+1th quality parameter threshold, and the first quality parameter range is greater than or equal to the first
  • the N+1th position parameter range refers to a parameter range greater than the Nth position parameter threshold
  • the N-i+1th position parameter range refers to a parameter range greater than the N-ith position parameter threshold and less than or equal to the N-ith position parameter
  • the parameter range of +1 position parameter threshold, the first position parameter range refers to the parameter range less than or equal to the first position parameter threshold;
  • the N+1th quality parameter range refers to the parameter less than the Nth quality parameter threshold Range,
  • the N-i+1th quality parameter range refers to the parameter range that is less than the N-ith quality parameter threshold and greater than or equal to the N-i+1th quality parameter threshold, and the first quality parameter range refers to greater than or equal to Parameter range for the 1st quality parameter threshold.
  • the location parameter includes at least one of the following: a first distance between the UE and the cell serving satellite, where the UE is located within the serving range of the cell serving satellite; a second distance between the UE and the ground network; The third distance between the center ground reference point of the satellite serving cell; the first round-trip delay between the UE and the cell serving satellite; the second round-trip delay between the UE and the ground network.
  • the N+1th position parameter range refers to the parameter range less than or equal to the Nth position parameter threshold
  • the N-i+1th position parameter range refers to the parameter range less than or equal to the N-ith position parameter threshold and greater than the N-ith position parameter threshold
  • the parameter range of +1 position parameter threshold, the first position parameter range refers to the parameter range greater than the first position parameter threshold;
  • the N+1th quality parameter range refers to the parameter range smaller than the Nth quality parameter threshold,
  • the N-i+1th quality parameter range refers to the parameter range that is less than the N-ith quality parameter threshold and greater than or equal to the N-i+1th quality parameter threshold, and the first quality parameter range is greater than or equal to the first
  • the N+1th position parameter range refers to a parameter range less than the Nth position parameter threshold
  • the N-i+1th position parameter range refers to a parameter range smaller than the N-ith position parameter threshold and greater than or equal to the N-i+th
  • the N-i+1th quality parameter range refers to the parameter range that is less than the N-ith quality parameter threshold and greater than or equal to the N-i+1th quality parameter threshold, and the first quality parameter range is greater than or equal to the first The parameter range for the quality parameter thresholds.
  • the location parameter includes: an inclination angle from the UE to the serving satellite of the cell relative to the horizontal direction of the ground, and the UE is located within the serving range of the serving satellite of the cell.
  • Each position parameter in the first RTT between the UE and the ground network, the second round-trip delay between the UE and the ground network, and the inclination of the UE to the cell serving satellite relative to the horizontal direction of the ground can be independently associated with the parameters in RSRP, RSRQ and SINR.
  • At least one downlink signal quality combination is used in this embodiment to perform the step of determining the coverage enhancement level, so as to be implemented as a single embodiment.
  • the method for determining the coverage enhancement level provided by this embodiment, on the basis of the location parameter of the UE, combines the downlink signal quality of the UE to determine the coverage enhancement level of the UE.
  • the accuracy rate of the coverage enhancement level confirmation of the UE further improves the random access efficiency and random access success rate of the UE.
  • the random access procedure of the UE is triggered by the physical downlink control channel command.
  • the coverage enhancement level of the UE may be configured by the network device. Exemplarily, the following may be used There are three ways to configure the coverage enhancement level for the UE through the network device:
  • Step 401 the UE triggers the random access procedure in response to the physical downlink control channel command, and the physical downlink control channel command indicates the initial coverage enhancement level, and determines the initial coverage enhancement level as the coverage enhancement level of the UE.
  • the network device sends the PDCCH order to the UE, where the PDCCH order carries the coverage enhancement level of the UE; the UE receives the PDCCH order sent by the network device, and configures the coverage enhancement level in the random access process for the UE.
  • the network device determines the initial coverage enhancement level of the UE, and carries the initial coverage enhancement level through the physical downlink control channel command (PDCCH order) to directly be The UE configures the initial coverage enhancement level.
  • PDCCH order physical downlink control channel command
  • the physical downlink control channel command indicates the initial coverage enhancement level, it is confirmed that the UE is in the above-mentioned initial coverage enhancement level.
  • the UE receives the PDCCH order sent by the network device, and if the PDCCH order carries the initial coverage enhancement level, the initial coverage enhancement level is configured for the UE.
  • Step 501 the UE triggers the random access process in response to the physical downlink control channel command, and the network device indicates the number of repeated transmissions on the initial narrowband physical random access channel (Narrowband Physical Random Access Channel, NPRACH), and the number of repeated transmissions on the initial NPRACH is used.
  • the corresponding coverage enhancement level is determined as the coverage enhancement level of the UE.
  • a correspondence between NPRACH and coverage enhancement level is configured in the UE, and the correspondence may be pre-configured by a network device or defined by a protocol standard.
  • the UE determines the initial coverage enhancement level corresponding to the initial NPRACH indicated by the network device based on the above-mentioned correspondence, and uses the initial coverage enhancement level as the coverage enhancement level of the UE.
  • the foregoing initial NPRACH is configured by the network device for the UE through network signaling.
  • the above-mentioned initial NPRACH is configured by the network device for the UE through a broadcast message in the cell.
  • the network device indicates the number of initial NPRACH repeated transmissions, it is confirmed that the UE is at the coverage enhancement level corresponding to the initial NPRACH repeated transmission times.
  • Step 601 the UE triggers the random access procedure in response to the physical downlink control channel command, and the upper layer configures the initial coverage enhancement level, and determines the initial coverage enhancement level as the coverage enhancement level of the UE.
  • the UE directly takes the initial coverage enhancement level configured by the higher layer as the coverage enhancement level of the UE.
  • the initial coverage enhancement level is configured by the network device for the UE through higher layer signaling.
  • the initial coverage enhancement level is configured by the network device for the UE through a broadcast message in the cell.
  • the above-mentioned high layer refers to a protocol layer above the physical layer.
  • the upper layer configures the initial coverage enhancement level for the UE, it is confirmed that the UE is in the above-mentioned initial coverage enhancement level.
  • the UE determines whether the random access process is triggered by the physical downlink control channel command; if so, in the case that the physical downlink control channel command indicates the initial coverage enhancement level, confirm The UE is located at the starting coverage enhancement level indicated by the physical downlink control channel command; if the physical downlink control channel command does not indicate the starting coverage enhancement level, and the network device has indicated the starting NPRACH repeated transmission times, confirm that the UE is at the starting NPRACH.
  • the three methods for determining the coverage enhancement level provided in this embodiment are that the network device directly configures the initial coverage enhancement level in the random access process for the UE, thereby ensuring the random access efficiency of the UE.
  • the UE may determine the coverage enhancement level of the UE based on the range of the location parameter to which the location parameter belongs.
  • FIG. 9 shows a method for determining the coverage enhancement level provided by an exemplary embodiment of the present application. The flow chart of the method is applied in the NTN scenario and executed by the UE, and the method includes:
  • Step 701 During the cell selection process, the UE determines, based on the location parameter of the UE, that the coverage enhancement level of the UE is the first type of coverage level or the second type of coverage level.
  • the above-mentioned first type of coverage level includes the 0th level of coverage enhancement level, which is also called normal coverage; the second type of coverage level includes other coverage enhancement levels except the 0th level of coverage enhancement level, which is also called as normal coverage.
  • Enhanced coverage includes the 0th level of coverage enhancement level, which is also called normal coverage;
  • the UE determines the coverage enhancement level of the UE in two cases:
  • the coverage enhancement level of the UE is determined only based on the location parameter of the UE;
  • the coverage enhancement level of the UE is determined based on the location parameter of the UE and combined with the cell selection criterion.
  • the first type of coverage level corresponds to the first parameter threshold; in the process of cell selection, when the UE's location parameter is less than the first parameter threshold, if the UE can only obtain the first type of information block, determine that the coverage enhancement level of the UE is the second type of coverage level; if the UE can obtain the second type of information block, determine that the coverage enhancement level of the UE is the first type of coverage level.
  • the coverage enhancement level of the UE is determined. is the second type of coverage level; during the cell selection process, the UE determines that the coverage enhancement level of the UE is the first type of coverage level if the UE can obtain the second type of information block when the location parameter is less than the first parameter threshold.
  • the coverage enhancement level of the UE is the first type of coverage level, or, when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is The second category of coverage level.
  • the above-mentioned first type of information blocks include a master information block (Master Information Block, MIB), a bandwidth-limited system information block 1 (System Information Block1-Bandwidth Reduced, SIB1-BR) and a system information block 2 (System Information Block2 , SIB2); the second type of information block includes system information block 1 (System Information Block1, SIB1).
  • MIB Master Information Block
  • SIB1-Bandwidth Reduced SIB1-BR
  • SIB2 System Information Block2
  • SIB1-BR System Information Block1-Bandwidth Reduced
  • SIB2 System Information Block2
  • the second type of information block includes system information block 1 (System Information Block1, SIB1).
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold
  • the first reference threshold is smaller than the second reference threshold
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the first type of coverage level is correspondingly configured with the first parameter threshold
  • the second type of coverage level is correspondingly configured with the second parameter threshold; in the cell selection process, the UE responds that the location parameter is greater than the first parameter threshold and the location parameter is less than the first parameter threshold. Two parameter thresholds, confirming that the UE is in the second type of coverage level.
  • the location parameter when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is the first type of coverage level, or when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is the second type of coverage level. .
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter value and the third parameter threshold
  • the third parameter threshold is greater than the first parameter threshold and the second parameter Threshold
  • the UE determines that the coverage enhancement level of the UE is the second type of coverage level when the location parameter is greater than the first parameter threshold and the second parameter threshold, and the location parameter is less than the third parameter threshold.
  • the UE in the process of cell selection when the location parameter is greater than the second parameter threshold and less than the third parameter threshold, confirms that the UE is located in the first parameter. Class II coverage level.
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold; during the cell selection process of the UE, the location parameter is less than the first parameter threshold, and the UE meets the cell selection criteria corresponding to the first type of coverage level.
  • the coverage enhancement level of the UE is determined to be the second type of coverage level; if the UE can obtain the second type of information block, the coverage enhancement level of the UE is determined to be the first type of coverage level.
  • the UE determines at least one information block that the UE can obtain when the location parameter is less than the first parameter threshold and the UE satisfies the cell selection criteria corresponding to the first type of coverage level; In the case that one information block only includes the first type of information block, the coverage enhancement level of the UE is determined to be the second type of coverage level; in the case that at least one information base includes the second type of information block, the coverage enhancement level of the UE is determined to be the first.
  • the first type of coverage level is configured with a first parameter threshold and a cell selection criterion; during the cell selection process, the UE determines that the location parameter is less than the first parameter threshold and the UE meets the cell selection criterion.
  • the second type of information block it is confirmed that the UE is in the first type of coverage level; if the UE can only obtain the first type of information block, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is equal to the first parameter threshold and the UE satisfies the cell selection criteria corresponding to the first type of coverage level, it is confirmed that the UE is in the first type of coverage level, or when the location parameter is equal to the first parameter threshold, and When the UE satisfies the cell selection criteria corresponding to the first type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the first type of information block includes MIB, SIB1-BR and SIB2; the second type of information block includes SIB1.
  • the first type of coverage level corresponds to a first parameter threshold
  • the second type of coverage level corresponds to a second parameter threshold
  • the first parameter threshold is smaller than the second parameter threshold
  • the first type of coverage level is configured with a first parameter threshold and a cell selection criterion
  • the second type of coverage level is configured with a second parameter threshold and a first cell selection criterion
  • the location parameter when the location parameter is equal to the first parameter threshold, and the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is determined that the UE is in the first type of coverage level; or when the location parameter is equal to the first parameter threshold value , and if the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is equal to the second parameter threshold and the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold and the third parameter threshold
  • the third parameter threshold is greater than the first parameter threshold and the second parameter threshold
  • the UE determines that the location parameter is less than the third parameter threshold when the UE does not meet the target cell selection criteria, or when the location parameter is greater than the first parameter threshold and the second parameter threshold, and the UE meets the second parameter threshold
  • the second cell selection criterion corresponding to the class coverage level, then the second class coverage class is determined as the coverage enhancement level of the UE; wherein, the target cell selection criterion includes the cell selection criterion corresponding to the first class coverage class and the second class coverage class corresponding to the first cell selection criterion.
  • the first type of coverage level is configured with the first parameter threshold and the cell selection criterion
  • the second type of coverage level is configured with the second parameter threshold and the third parameter threshold, and the first cell selection criterion and the second cell selection criterion
  • the UE continues to determine whether the location parameter is less than the third parameter when the location parameter is greater than the first parameter threshold and greater than the second parameter threshold, or the UE does not satisfy the cell selection criterion and does not satisfy the first cell selection criterion threshold and whether the UE meets the second cell selection criterion; if the location parameter is less than the third parameter threshold and the UE meets the second cell selection criterion, confirm that the UE is in the second type of coverage level.
  • the UE determines that the location parameter is greater than the second parameter threshold, or the UE does not satisfy the cell selection criterion and the first cell selection criterion, and continues to determine whether the location parameter is less than the first cell selection criterion.
  • the UE when the location parameter is equal to the first parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the UE when the location parameter is equal to the second parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the UE when the location parameter is equal to the third parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold and the third parameter threshold
  • the third parameter threshold is greater than the first parameter threshold and the second parameter Threshold
  • the location parameter of the UE is greater than the first parameter threshold and the UE does not meet the first cell selection criterion corresponding to the second type of coverage level, and the location parameter is less than the third parameter threshold and the UE meets the In the case of the second cell selection criterion, confirm that the UE is in the second type of coverage level;
  • the UE does not meet the cell selection criteria corresponding to the first type of coverage level and the location parameter is greater than the second parameter threshold, and the location parameter is less than the third parameter threshold and the UE satisfies the second cell In the case of selection criteria, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is smaller than the third parameter
  • the UE confirms that the UE is in the The second category of coverage level.
  • the UE confirms that the UE is in the second type of coverage level when the location parameter is equal to the third parameter threshold and the UE satisfies the second cell selection criterion.
  • the location parameter of the UE is equal to the first parameter threshold and the UE does not meet the first cell selection criterion corresponding to the second type of coverage level, and the location parameter is less than the third parameter.
  • the threshold is set and the UE satisfies the second cell selection criterion, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is equal to the third parameter threshold and the UE meets the second cell selection criterion
  • the location parameter is equal to the third parameter threshold and the UE meets the second cell selection criterion
  • the UE does not meet the cell selection criteria corresponding to the first type of coverage level and the location parameter is equal to the second parameter threshold, and the location parameter is less than the third parameter threshold and the UE
  • the second cell selection criterion is satisfied, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is equal to the third parameter threshold and the UE meets the second cell selection criteria.
  • the location parameter when it is equal to the third parameter threshold and the UE satisfies the second cell selection criterion, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter includes any of the following:
  • a second RTT between the UE and the terrestrial network is a second RTT between the UE and the terrestrial network.
  • the UE's determination of the coverage enhancement level of the UE includes the other two situations:
  • the coverage enhancement level of the UE is determined only based on the location parameter of the UE;
  • the coverage enhancement level of the UE is determined based on the location parameter of the UE and combined with the cell selection criterion.
  • the first type of coverage level corresponds to the first parameter threshold; during the cell selection process of the UE, if the UE's location parameter is greater than the first parameter threshold, if the UE can only obtain the first type of information block, determine that the coverage enhancement level of the UE is the second type of coverage level; if the UE can obtain the second type of information block, determine that the coverage enhancement level of the UE is the first type of coverage level.
  • the coverage enhancement level of the UE is determined. is the second type of coverage level; during the cell selection process, the UE determines that the coverage enhancement level of the UE is the first type of coverage level if the UE can obtain the second type of information block when the location parameter is greater than the first parameter threshold.
  • the coverage enhancement level of the UE is the first type of coverage level, or, when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is The second category of coverage level.
  • the above-mentioned first type of information blocks include a master information block (Master Information Block, MIB), a bandwidth-limited system information block 1 (System Information Block1-Bandwidth Reduced, SIB1-BR) and a system information block 2 (System Information Block2 , SIB2); the second type of information block includes system information block 1 (System Information Block1, SIB1).
  • MIB Master Information Block
  • SIB1-Bandwidth Reduced SIB1-BR
  • SIB2 System Information Block2
  • SIB1-BR System Information Block1-Bandwidth Reduced
  • SIB2 System Information Block2
  • the second type of information block includes system information block 1 (System Information Block1, SIB1).
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold
  • the first reference threshold is greater than the second reference threshold
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the first type of coverage level is correspondingly configured with the first parameter threshold
  • the second type of coverage level is correspondingly configured with the second parameter threshold
  • the UE responds that the location parameter is smaller than the first parameter threshold and the location parameter is greater than the first parameter threshold.
  • Two parameter thresholds confirming that the UE is in the second type of coverage level.
  • the location parameter when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is the first type of coverage level, or when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is the second type of coverage level. .
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter value and the third parameter threshold
  • the third parameter threshold is smaller than the first parameter threshold and the second parameter Threshold
  • the UE determines that the coverage enhancement level of the UE is the second type of coverage level when the location parameter is less than the first parameter threshold and the second parameter threshold, and the location parameter is greater than the third parameter threshold.
  • the second parameter threshold is determined to be less than the first parameter threshold, in the process of cell selection, when the location parameter is less than the second parameter threshold and greater than the third parameter threshold, the UE confirms that the UE is located in the first parameter. Class II coverage level.
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the first type of coverage level corresponds to a first parameter threshold; during the cell selection process of the UE, when the location parameter is greater than the first parameter threshold, and the UE satisfies the cell selection criteria corresponding to the first type of coverage level.
  • the coverage enhancement level of the UE is determined to be the second type of coverage level; if the UE can obtain the second type of information block, the coverage enhancement level of the UE is determined to be the first type of coverage level.
  • the first type of coverage level is configured with a first parameter threshold and a cell selection criterion; during the cell selection process, the UE determines that the location parameter is greater than the first parameter threshold and the UE meets the cell selection criterion.
  • the second type of information block it is confirmed that the UE is in the first type of coverage level; if the UE can only obtain the first type of information block, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is equal to the first parameter threshold and the UE satisfies the cell selection criteria corresponding to the first type of coverage level, it is confirmed that the UE is in the first type of coverage level, or when the location parameter is equal to the first parameter threshold, and When the UE satisfies the cell selection criteria corresponding to the first type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the first type of information block includes MIB, SIB1-BR and SIB2; the second type of information block includes SIB1.
  • the first type of coverage level corresponds to a first parameter threshold
  • the second type of coverage level corresponds to a second parameter threshold
  • the first parameter threshold is greater than the second parameter threshold
  • in the process of cell selection if the UE is The location parameter of the UE is smaller than the first parameter threshold or the UE does not meet the cell selection criteria corresponding to the first type of coverage level, that is, the UE does not meet the conditions of the first type of coverage level.
  • the coverage enhancement level of the UE is determined to be the second type of coverage level.
  • the first type of coverage level is configured with a first parameter threshold and a cell selection criterion
  • the second type of coverage level is configured with a second parameter threshold and a first cell selection criterion
  • the location parameter when the location parameter is equal to the first parameter threshold, and the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is determined that the UE is in the first type of coverage level; or when the location parameter is equal to the first parameter threshold value , and if the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is equal to the second parameter threshold and the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold and the third parameter threshold
  • the third parameter threshold is smaller than the first parameter threshold and the second parameter Threshold
  • the UE determines that the location parameter is greater than the third parameter threshold when the UE does not meet the target cell selection criteria, or when the location parameter is less than the first parameter threshold and the second parameter threshold
  • the second cell selection criterion corresponding to the class coverage level, then the second class coverage class is determined as the coverage enhancement level of the UE; wherein, the target cell selection criterion includes the cell selection criterion corresponding to the first class coverage class and the second class coverage class corresponding to the first cell selection criterion.
  • the first type of coverage level is configured with the first parameter threshold and the cell selection criterion
  • the second type of coverage level is configured with the second parameter threshold and the third parameter threshold, and the first cell selection criterion and the second cell selection criterion
  • the UE continues to determine whether the location parameter is greater than the third parameter when the location parameter is smaller than the first parameter threshold and smaller than the second parameter threshold, or the UE does not satisfy the cell selection criterion and does not satisfy the first cell selection criterion threshold and whether the UE meets the second cell selection criterion; if the location parameter is greater than the third parameter threshold and the UE meets the second cell selection criterion, confirm that the UE is in the second type of coverage level.
  • the UE determines that the location parameter is smaller than the second parameter threshold, or the UE does not meet the cell selection criteria and the first cell selection criteria, and continues to determine whether the location parameter is greater than the first cell selection criterion.
  • the UE when the location parameter is equal to the first parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the UE when the location parameter is equal to the second parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the UE when the location parameter is equal to the third parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold and the third parameter threshold
  • the third parameter threshold is smaller than the first parameter threshold and the second parameter Threshold
  • the location parameter of the UE is less than the first parameter threshold and the UE does not meet the first cell selection criterion corresponding to the second type of coverage level, and the location parameter is greater than the third parameter threshold and the UE meets the In the case of the second cell selection criterion, confirm that the UE is in the second type of coverage level;
  • the UE does not meet the cell selection criteria corresponding to the first type of coverage level and the location parameter is less than the second parameter threshold, and the location parameter is greater than the third parameter threshold and the UE meets the second cell selection criteria In the case of selection criteria, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is greater than the third parameter
  • the UE confirms that the UE is in the The second category of coverage level.
  • the UE confirms that the UE is in the second type of coverage level when the location parameter is equal to the third parameter threshold and the UE satisfies the second cell selection criterion.
  • the location parameter of the UE is equal to the first parameter threshold and the UE does not meet the first cell selection criterion corresponding to the second type of coverage level, and the location parameter is greater than the third parameter.
  • the threshold is set and the UE satisfies the second cell selection criterion, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is equal to the third parameter threshold and the UE meets the second cell selection criterion
  • the location parameter is equal to the third parameter threshold and the UE meets the second cell selection criterion
  • the UE does not meet the cell selection criteria corresponding to the first type of coverage level and the location parameter is equal to the second parameter threshold, and the location parameter is greater than the third parameter threshold and the UE
  • the second cell selection criterion is satisfied, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is equal to the third parameter threshold and the UE meets the second cell selection criteria.
  • the location parameter when it is equal to the third parameter threshold and the UE satisfies the second cell selection criterion, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter includes: the inclination of the UE to the serving satellite of the cell relative to the horizontal direction of the ground.
  • the location parameter threshold configured for the cell selection criterion is adopted in the cell selection process, and the UE located in the center of the cell and the UE located at the edge of the cell are clearly distinguished based on the location parameters of the UE. area, while also taking into account the cell selection.
  • Figure 10 shows a flowchart of a method for configuring a coverage enhancement level provided by an exemplary embodiment of the present application, and the method is applied in an NTN scenario , executed by the network device, the method includes:
  • Step 801 Send configuration information to the UE, where the configuration information includes parameters required for determining the coverage enhancement level according to a location parameter configured for the UE, and the location parameter is used to reflect the location of the UE.
  • the network device configures relevant parameters for determining the coverage enhancement level for the UE, including the following two situations:
  • the relevant parameters required in the cell selection process are configured for the UE.
  • the network device sends configuration information to the UE, where the configuration information includes N location parameter thresholds for dividing the range of location parameters.
  • N is a positive integer greater than or equal to 1.
  • the above configuration information is configured publicly for the cells, and the configuration information is carried and configured by a system message.
  • the above-mentioned system message includes SIBx, where x is greater than or equal to 1.
  • the UE after accessing a cell, the UE first receives a broadcast message of the cell, where the broadcast message carries the above configuration information.
  • the configuration information of different cells is the same or different.
  • the configurations of coverage enhancement levels of different cells are different.
  • the configuration of cell 1 uses three coverage enhancement levels of CE Level 0, CE Level 1 and CE Level 2, and the configuration of cell 2 uses CE Level 0, CE Level 1, There are four coverage enhancement levels, CE Level 2 and CE Level 3; the location parameter thresholds of different cells are configured differently.
  • the two location parameter thresholds of TH11 and TH12 are used for the configuration of cell 1
  • the thresholds of TH21, TH22 and TH23 are used for the configuration of cell 2.
  • the above configuration information further includes N quality parameter thresholds for dividing the quality parameter range.
  • the above configuration information is further used to configure N+1 random access channel resources corresponding to N+1 coverage enhancement levels for the UE.
  • the above random access channel resource includes at least one of the following:
  • Random access channel (Random Access CHannel, RACH) time-frequency resources
  • NPRACH Narrowband Physical Random Access CHannel
  • the number of times of repeated transmission of message 3 (message3, msg3), among which, the contention-based random access has 4 signalings in the medium access control (Medium Access Control, MAC) layer, including msg3, msg3 is used in the uplink physical shared channel ( Physical Uplink Shared Channel, PUSCH) to the cell wireless network temporary identifier (Cell-Radio Network Temporary Identifier, C-RNTI) MAC Control Element (MAC Control Element, MAC CE) or Common Control Channel (Common Control CHannel, CCCH)
  • the Service Data Unit (SDU) is periodically transmitted.
  • the above configuration information further includes at least one ground reference point position in the center of the satellite serving cell, and each ground reference point position corresponds to a position parameter threshold.
  • the above-mentioned second distance is the distance between the UE and the ground reference point in the center of the satellite serving cell.
  • the network device sends a broadcast message to the UE, where the broadcast message includes configuration information of the first type of coverage level and the second type of coverage level.
  • the first type of coverage level includes the 0th level of coverage enhancement level
  • the second type of coverage level includes other coverage enhancement levels except the 0th level of coverage enhancement level. It should be noted that the first type of coverage level is normal coverage, and the second type of coverage level is enhanced coverage.
  • the above configuration information includes a parameter threshold corresponding to the first type of coverage level and a parameter threshold corresponding to the second type of coverage level.
  • the above configuration information further includes parameters used by the cell selection criteria corresponding to the first type of coverage level and the second type of coverage level.
  • the above cell selection criteria include cell selection S criteria.
  • the cell selection criterion S is that the received power in the cell search is Srxlev>0 decibels (dB) and the received signal quality in the cell search is Squal>0dB.
  • the network device configures the relevant parameters for determining the coverage enhancement level for the UE, so that the UE can determine the coverage enhancement level based on the location parameter.
  • the level which ensures the random access performance of the UE, and can clearly distinguish the UE located in the center of the cell from the area located at the edge of the cell based on the location parameters of the UE, so that a lower coverage enhancement level can be selected for the UE in the center of the cell, and the smaller The number of repeated transmissions can reduce the delay of accessing the network; and a higher coverage enhancement level is selected for the UE at the edge of the cell, and a larger number of repeated transmissions is used to improve the success rate of random access.
  • the first implementation method :
  • the UE selects the coverage enhancement level based on the first distance between the UE and the cell serving satellite, or the RTT between the UE and the cell serving satellite, or the first distance and the RSRP, or the RTT and the RSRP.
  • This method can be divided into the following two steps:
  • Step 1 the UE receives the configuration information sent by the network device, and the configuration information includes the relevant parameters of the random access channel (Random Access CHannel, RACH):
  • N RSRP thresholds for UE coverage enhancement level selection RSRP_th j, 0 ⁇ j ⁇ N, the larger the j, the smaller the corresponding RSRP_th j;
  • N RTT thresholds RTT_th j used for UE coverage enhancement level selection 0 ⁇ j ⁇ N, the larger j is, the corresponding RTT_th j is larger; or, N distance thresholds d_th j used for UE coverage enhancement level selection , 0 ⁇ j ⁇ N, the larger the j, the larger the corresponding d_th j;
  • the RACH resources include: RACH time-frequency resources; NPRACH repeated transmission times; RAR window length; msg3 repeated transmission times;
  • the configuration information is configured publicly for the cell, and the configuration information is carried in the system message, for example, SIBx, x is greater than or equal to 1.
  • Step 2 for the UE that triggers random access:
  • the UE confirms It is located at the initial coverage enhancement level, or the coverage enhancement level corresponding to the initial NPRACH repeated transmission times.
  • the UE selects the coverage enhancement level in the random access procedure in the following manner:
  • Method 1 the UE selects the coverage enhancement level based on the first distance or RTT;
  • the UE obtains the first position of the UE based on the positioning capability, obtains the second position of the cell serving satellite based on the ephemeris information, and calculates the relationship between the UE and the cell serving satellite according to the first position and the second position.
  • the RTT between the two is recorded as the measured RTT (that is, the measured RTT); wherein, the ephemeris information is an expression used to describe the position and velocity of the space flight body;
  • the measured RTT is greater than RTT_th N, it is confirmed that the UE is located at the coverage enhancement level N;
  • the measured RTT is greater than RTT_th N-1 and less than or equal to RTT_th N, confirm that the UE is in the coverage enhancement level N-1;
  • the measured RTT is greater than RTT_th 1 and less than or equal to RTT_th 2, confirm that the UE is located at coverage enhancement level 1;
  • Method 2 the UE selects the coverage enhancement level based on the first distance and RSRP, or RTT and RSRP;
  • the measured RTT is greater than RTT_th N, or the measured RSRP (measured RSRP) is less than RSRP_th N, it is confirmed that the UE is located at the coverage enhancement level N;
  • the UE selects the coverage enhancement level based on the second distance, or the second distance and RSRP.
  • This method can be divided into the following two steps:
  • Step 1 the UE receives the configuration information sent by the network device, and the configuration information includes the relevant parameters of the RACH:
  • N RSRP thresholds for UE coverage enhancement level selection RSRP_th j, 0 ⁇ j ⁇ N, the larger the j, the smaller the corresponding RSRP_th j;
  • N distance thresholds d_th j used for UE coverage enhancement level selection 0 ⁇ j ⁇ N, the larger the j is, the larger the corresponding d_th j is, and at the same time indicates the position of at least one ground reference point;
  • the RACH resources include at least one of the following: RACH time-frequency resources; NPRACH repeated transmission times; RAR window length; msg3 repeated transmission times;
  • the configuration information is configured publicly for the cell, and the configuration information is carried in the system message, for example, SIBx, x is greater than or equal to 1.
  • Step 2 for the UE that triggers random access:
  • the UE confirms It is located at the initial coverage enhancement level, or the coverage enhancement level corresponding to the initial NPRACH repeated transmission times.
  • the UE selects the coverage enhancement level in the random access process in the following manner:
  • Method 1 as shown in Figure 12, the UE selects the coverage enhancement level based on the second distance;
  • the UE obtains the second position of the UE based on the positioning capability, and is recorded as measured d (measured d) according to the distance between the second position and the configured cell center ground reference point;
  • the UE is located at the coverage enhancement level N;
  • the UE is located at the coverage enhancement level N-1;
  • the UE is located at coverage enhancement level 1;
  • Method 2 the UE selects a coverage enhancement level based on the second distance and RSRP;
  • the measured d is greater than d_th N, or the measured d (measured RSRP) is less than RSRP_th N, it is confirmed that the UE is located at the coverage enhancement level N;
  • the UE selects the coverage enhancement level based on the inclination of the UE to the satellite relative to the horizontal direction of the ground, or based on the above inclination and RSRP.
  • This method can be divided into the following two steps:
  • Step 1 the UE receives the configuration information sent by the network device, and the configuration information includes the relevant parameters of the RACH:
  • N RSRP thresholds for UE coverage enhancement level selection RSRP_th j, 0 ⁇ j ⁇ N, the larger the j, the smaller the corresponding RSRP_th j;
  • N tilt angle thresholds for UE coverage enhancement level selection angle_th j, 0 ⁇ j ⁇ N, the larger j is, the smaller the corresponding angle_th j is;
  • the RACH resources include: RACH time-frequency resources; NPRACH repeated transmission times; RAR window length; msg3 repeated transmission times;
  • the configuration information is configured publicly for the cell, and the configuration information is carried in the system message, for example, SIBx, x is greater than or equal to 1.
  • Step 2 for the UE that triggers random access:
  • the UE confirms It is located at the initial coverage enhancement level, or the coverage enhancement level corresponding to the initial NPRACH repeated transmission times.
  • the UE selects the coverage enhancement level in the random access procedure in the following manner:
  • Method 1 as shown in Figure 13, the UE selects the coverage enhancement level based on the elevation angle between the UE and the satellite;
  • the UE obtains the first position of the UE based on the positioning capability, obtains the second position of the cell serving satellite based on the ephemeris information, and calculates the elevation angle from the UE to the satellite according to the first position and the second position, which is recorded as the measured angle;
  • the UE selects the coverage enhancement level based on the elevation angle from the UE to the satellite and the RSRP;
  • the UE selects the coverage enhancement level based on its own location parameter, or based on the location parameter and RSRP.
  • This method can be divided into the following two steps:
  • Step 1 the UE reads the broadcast message of the cell, and obtains the relevant information of the cell selection, and the relevant message includes at least one of the following:
  • At least two first thresholds related to the location of the UE and the location of the serving satellite in the cell (or the ground reference point in the center of the cell) for the UE to select the coverage enhancement level, and the location parameters corresponding to the first thresholds may include at least the following A sort of:
  • the number of the above-mentioned first thresholds is equal to the number of cell selection S criteria configured in a). For example, if two sets of cell selection S criteria parameters are configured for enhanced coverage, plus one set of cell selection S criteria configured for normal coverage The number of first thresholds is 3; if one set of cell selection S criteria parameters is configured for enhanced coverage, plus one set of cell selection S criteria configured for normal coverage, the number of first thresholds is 2.
  • Step 2 the method for the UE to perform cell selection is as follows:
  • Method 1 the UE performs cell selection based on the location parameter and determines the coverage enhancement level
  • positional parameter can be:
  • the elevation angle of the UE to the serving satellite of the cell relative to the horizontal direction of the ground;
  • the third distance between the UE and the ground reference point in the center of the cell is the third distance between the UE and the ground reference point in the center of the cell.
  • the UE obtains its own first position based on the positioning capability, obtains the second position of the cell serving satellite based on the ephemeris information, and calculates the RTT between the UE and the cell serving satellite according to the first position and the second position.
  • RTT To measure RTT;
  • the UE cannot obtain SIB1 but can obtain MIB, SIB1-BR and SIB2, confirm that the UE is located in enhanced coverage;
  • the UE can obtain SIB1, it is confirmed that the UE is located in the normal coverage.
  • the measured RTT is greater than the RTT threshold corresponding to the normal coverage, and the measured RTT is less than or equal to the RTT threshold 1 corresponding to the enhanced coverage, confirm that the UE is located in the enhanced coverage;
  • the measured RTT is less than or equal to the RTT threshold 2 corresponding to the enhanced coverage, it is confirmed that the UE is located in the enhanced coverage.
  • the UE performs cell selection and determines the coverage enhancement level based on the location parameter and the cell selection S criterion;
  • positional parameter can be:
  • the UE obtains its own first position based on the positioning capability, obtains the second position of the cell serving satellite based on the ephemeris information, and calculates the RTT between the UE and the cell serving satellite according to the first position and the second position.
  • RTT To measure RTT;
  • the UE cannot obtain SIB 1, but can obtain MIB, SIB 1-BR and SIB 2, confirm that the UE is located in enhanced coverage;
  • the UE can obtain SIB 1, it is confirmed that the UE is located in the normal coverage.
  • the UE does not meet the above normal coverage conditions, if the measured RTT is less than or equal to the RTT threshold 1 corresponding to the enhanced coverage, and the UE satisfies the cell selection S criterion 1 corresponding to the enhanced coverage, it is confirmed that the UE is located in the enhanced coverage;
  • the measured RTT is greater than the RTT threshold corresponding to the normal coverage or the UE does not meet the cell selection S criterion corresponding to the normal coverage
  • the measured RTT is greater than the RTT threshold 1 corresponding to the enhanced coverage or the UE does not meet the cell selection S criterion 1 corresponding to the normal coverage
  • the measured RTT is less than or equal to the RTT threshold 2 corresponding to the enhanced coverage and the UE satisfies the cell selection criterion 2 corresponding to the enhanced coverage, it is confirmed that the UE is located in the enhanced coverage.
  • the coverage enhancement level is determined based on the location parameter of the UE, which ensures the random access performance of the UE. Differentiate between UEs located in the center of the cell and areas located at the edge of the cell, so that a lower coverage enhancement level can be selected for UEs in the center of the cell, and a smaller number of repeated transmissions can be used to reduce the delay of accessing the network; The UE selects a higher coverage enhancement level and uses a larger number of repeated transmissions to improve the success rate of random access.
  • the situation that the above-mentioned position parameter is equal to the position parameter threshold can be defined on the position parameter threshold at either end of the two ends of the position parameter range, which is not limited in this application, and only one side is described in the above embodiment.
  • the above-mentioned case where the quality of the downlink signal is equal to the quality parameter threshold may also be defined on the quality parameter threshold at either end of the quality parameter range, which is not limited in this application.
  • FIG. 14 shows a block diagram of an apparatus for determining a coverage enhancement level provided by an exemplary embodiment of the present application.
  • the apparatus can be implemented as a part or all of a UE through software, hardware, or a combination of the two, and the apparatus includes:
  • the first processing module 901 is configured to determine the coverage enhancement level based on the location parameter of the UE, wherein the location parameter is used to reflect the location of the UE.
  • the first processing module 901 is configured to determine the coverage enhancement level of the UE based on the location parameter range to which the location parameter of the UE belongs during the random access process.
  • the first processing module 901 is used for:
  • the N-ith position parameter threshold is smaller than the N-i+1th position parameter threshold, N is a positive integer greater than or equal to 1, and i is a positive integer smaller than N.
  • the first processing module 901 is used for:
  • the N-ith position parameter threshold is smaller than the N-i+1th position parameter threshold, N is a positive integer greater than or equal to 1, and i is a positive integer smaller than N.
  • the location parameter includes at least one of the following:
  • the second round-trip delay between the UE and the terrestrial network is the second round-trip delay between the UE and the terrestrial network.
  • the first processing module 901 is used for:
  • the N-ith position parameter threshold is greater than the N-i+1th position parameter threshold, N is a positive integer greater than or equal to 1, and i is a positive integer smaller than N.
  • the first processing module 901 is used for:
  • the N-ith coverage enhancement level As the coverage enhancement level of the UE;
  • the N-ith position parameter threshold is greater than the N-i+1th position parameter threshold, N is a positive integer greater than or equal to 1, and i is a positive integer smaller than N.
  • the location parameters include:
  • the inclination of the UE to the cell serving satellite relative to the horizontal direction of the ground, and the UE is located within the serving range of the cell serving satellite.
  • the first processing module 901 is used for:
  • the Nth coverage enhancement level is used as the coverage enhancement level of the UE ;
  • the location parameter does not belong to any of the N-i+2 th location parameter range to the N+1 th location parameter range and the downlink signal quality does not belong to the N-i+2 th quality parameter range to the N+1 th
  • the The N-i level coverage enhancement level is used as the coverage enhancement level of the UE
  • the level 0 coverage enhancement level is taken as the coverage enhancement level of the UE; N is a positive integer greater than or equal to 1 , i is a positive integer less than N.
  • the N+1th position parameter range refers to the parameter range greater than or equal to the Nth position parameter threshold
  • the N-i+1th position parameter range refers to the parameter range greater than or equal to the N-ith position parameter threshold and less than the N-ith position parameter threshold +1 parameter range of the position parameter threshold
  • the first position parameter range refers to the parameter range less than the first position parameter threshold
  • the N+1th quality parameter range refers to the parameter range that is smaller than the Nth quality parameter threshold
  • the N-i+1th quality parameter range refers to the parameter range that is smaller than the N-ith quality parameter threshold and greater than or equal to the N-i+1th
  • the parameter range of the first quality parameter threshold, and the first quality parameter range refers to the parameter range that is greater than or equal to the first quality parameter threshold.
  • the N+1th position parameter range refers to the parameter range greater than the Nth position parameter threshold
  • the N-i+1th position parameter range refers to the parameter range greater than the N-ith position parameter threshold and less than or equal to the N-i+1th
  • the parameter range of the first position parameter threshold, the first position parameter range refers to the parameter range less than or equal to the first position parameter threshold
  • the N+1th quality parameter range refers to the parameter range that is smaller than the Nth quality parameter threshold
  • the N-i+1th quality parameter range refers to the parameter range that is smaller than the N-ith quality parameter threshold and greater than or equal to the N-i+1th
  • the parameter range of the first quality parameter threshold, and the first quality parameter range refers to the parameter range that is greater than or equal to the first quality parameter threshold.
  • the location parameter includes at least one of the following:
  • the second round-trip delay between the UE and the terrestrial network is the second round-trip delay between the UE and the terrestrial network.
  • the N+1th position parameter range refers to the parameter range less than or equal to the Nth position parameter threshold
  • the N-i+1th position parameter range refers to the parameter range less than or equal to the N-ith position parameter threshold and greater than the N-ith position parameter threshold +1 parameter range of the position parameter threshold
  • the first position parameter range refers to the parameter range greater than the first position parameter threshold
  • the N+1th quality parameter range refers to the parameter range that is smaller than the Nth quality parameter threshold
  • the N-i+1th quality parameter range refers to the parameter range that is smaller than the N-ith quality parameter threshold and greater than or equal to the N-i+1th
  • the parameter range of the first quality parameter threshold, and the first quality parameter range refers to the parameter range that is greater than or equal to the first quality parameter threshold.
  • the N+1th position parameter range refers to the parameter range that is less than the Nth position parameter threshold
  • the N-i+1th position parameter range refers to the parameter range that is less than the N-ith position parameter threshold and greater than or equal to the N-i+1th
  • the parameter range of the first position parameter threshold, the first position parameter range refers to the parameter range greater than or equal to the first position parameter threshold
  • the N+1th quality parameter range refers to the parameter range that is smaller than the Nth quality parameter threshold
  • the N-i+1th quality parameter range refers to the parameter range that is smaller than the N-ith quality parameter threshold and greater than or equal to the N-i+1th
  • the parameter range of the first quality parameter threshold, and the first quality parameter range refers to the parameter range that is greater than or equal to the first quality parameter threshold.
  • the location parameters include:
  • the inclination of the UE to the cell serving satellite relative to the horizontal direction of the ground, and the UE is located within the serving range of the cell serving satellite.
  • the downlink signal quality includes at least one of the following:
  • the apparatus further includes: a first receiving module 902;
  • the first receiving module 902 is configured to receive configuration information sent by the network device, where the configuration information includes N location parameter thresholds for dividing the range of location parameters, where N is a positive integer greater than or equal to 1.
  • the configuration information is configured publicly for the cells, and the configuration information is carried by the system message.
  • the configuration information is further used to configure N+1 random access channel resources corresponding to N+1 coverage enhancement levels for the UE.
  • the random access channel resources include at least one of the following:
  • the first processing module 901 is used for:
  • the initial coverage enhancement level is determined as the coverage enhancement level of the UE; or,
  • the coverage enhancement level corresponding to the number of repeated transmissions of the initial narrowband physical random access channel is determined as the UE. coverage enhancement level of ; or,
  • the initial coverage enhancement level is determined as the coverage enhancement level of the UE.
  • the first processing module 901 is configured to determine, during the cell selection process, that the coverage enhancement level of the UE is the first type of coverage level or the second type of coverage level based on the location parameter of the UE.
  • the first type of coverage level includes a level 0 coverage enhancement level
  • the second type of coverage level includes other coverage enhancement levels other than the 0th coverage enhancement level.
  • the first type of coverage level corresponds to the first parameter threshold; the first processing module 901 is used for:
  • the UE In the case that the location parameter is less than the first parameter threshold, if the UE can only obtain the first type of information block, determine that the coverage enhancement level of the UE is the second type of coverage level;
  • the UE can obtain the second type of information block, it is determined that the coverage enhancement level of the UE is the first type of coverage level.
  • the coverage enhancement level of the UE is the first type of coverage level, or, when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is The second category of coverage level.
  • the first type of information block includes main information block, bandwidth limited system information block 1 and system information block 2;
  • the second type of information block includes system information block 1 .
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold
  • the first parameter threshold is smaller than the second parameter threshold
  • the first processing module 901 is used for:
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the location parameter when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is the first type of coverage level, or when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is the second type of coverage level. .
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold and the third parameter threshold
  • the third parameter threshold is greater than the first parameter threshold and the second parameter threshold
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold; the first processing module 901 is used for:
  • the UE In the case where the location parameter is less than the first parameter threshold, and the UE satisfies the cell selection criteria corresponding to the first type of coverage level, if the UE can only obtain the first type of information block, determine that the coverage enhancement level of the UE is the second type of coverage level; If the UE can obtain the second type of information block, it is determined that the coverage enhancement level of the UE is the first type of coverage level.
  • the location parameter is equal to the first parameter threshold and the UE satisfies the cell selection criteria corresponding to the first type of coverage level, it is confirmed that the UE is in the first type of coverage level, or when the location parameter is equal to the first parameter threshold, and When the UE satisfies the cell selection criteria corresponding to the first type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the first type of information block includes main information block, bandwidth limited system information block 1 and system information block 2;
  • the second type of information block includes system information block 1 .
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold
  • the first parameter threshold is smaller than the second parameter threshold
  • the first processing module 901 is used for:
  • the location parameter is greater than the first parameter threshold or the UE does not meet the cell selection criteria corresponding to the first type of coverage enhancement level, if the location parameter is less than the second parameter threshold, and the UE satisfies the first cell selection corresponding to the second type of coverage level In the case of the criterion, it is determined that the coverage enhancement level of the UE is the second type of coverage level.
  • the location parameter when the location parameter is equal to the first parameter threshold, and the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is determined that the UE is in the first type of coverage level; or when the location parameter is equal to the first parameter threshold value , and if the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is equal to the second parameter threshold and the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold and the third parameter threshold
  • the third parameter threshold is greater than the first parameter threshold and the second parameter threshold
  • the location parameter is greater than the first parameter threshold and the second parameter threshold, or the UE does not meet the target cell selection criterion, if the location parameter is less than the third parameter threshold and the UE meets the second cell selection criterion corresponding to the second coverage level, Determining the second type of coverage level as the coverage enhancement level of the UE;
  • the target cell selection criterion includes a cell selection criterion corresponding to the first type of coverage level and a first cell selection criterion corresponding to the second type of coverage level.
  • the UE when the location parameter is equal to the first parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the UE when the location parameter is equal to the second parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the UE when the location parameter is equal to the third parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the location parameter includes at least one of the following:
  • the second round-trip delay between the UE and the terrestrial network is the second round-trip delay between the UE and the terrestrial network.
  • the first type of coverage level corresponds to the first parameter threshold; the first processing module 901 is used for:
  • the UE In the case that the location parameter is greater than the first parameter threshold, if the UE can only obtain the first type of information block, determine that the coverage enhancement level of the UE is the second type of coverage level;
  • the UE can obtain the second type of information block, it is determined that the coverage enhancement level of the UE is the first type of coverage level.
  • the coverage enhancement level of the UE is the first type of coverage level, or, when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is The second category of coverage level.
  • the first type of information block includes main information block, bandwidth limited system information block 1 and system information block 2;
  • the second type of information block includes system information block 1 .
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold
  • the first parameter threshold is greater than the second parameter threshold
  • the first processing module 901 is used for:
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the location parameter when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is the first type of coverage level, or when the location parameter is equal to the first parameter threshold, it is determined that the coverage enhancement level of the UE is the second type of coverage level. .
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold and the third parameter threshold
  • the third parameter threshold is smaller than the first parameter threshold and the second parameter threshold
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the coverage enhancement level of the UE is the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold; the first processing module 901 is used for:
  • the UE In the case that the location parameter is greater than the first parameter threshold, and the UE satisfies the cell selection criterion corresponding to the first type of coverage level, if the UE can only obtain the first type of information block, determine that the coverage enhancement level of the UE is the second type of coverage level;
  • the UE can obtain the second type of information block, it is determined that the coverage enhancement level of the UE is the first type of coverage level.
  • the location parameter is equal to the first parameter threshold and the UE satisfies the cell selection criteria corresponding to the first type of coverage level, it is confirmed that the UE is in the first type of coverage level, or when the location parameter is equal to the first parameter threshold, and When the UE satisfies the cell selection criteria corresponding to the first type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the first type of information block includes main information block, bandwidth limited system information block 1 and system information block 2;
  • the second type of information block includes system information block 1 .
  • the first type of coverage level corresponds to a first parameter threshold
  • the second type of coverage level corresponds to a second parameter threshold
  • the first parameter threshold is greater than the second parameter threshold
  • the first processing module 901 is used for:
  • the location parameter is less than the first parameter threshold or the UE does not meet the cell selection criteria corresponding to the first type of coverage enhancement level, if the location parameter is greater than the second parameter threshold and the UE satisfies the first cell selection corresponding to the second type of coverage level In the case of the criterion, it is determined that the coverage enhancement level of the UE is the second type of coverage level.
  • the location parameter when the location parameter is equal to the first parameter threshold, and the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is determined that the UE is in the first type of coverage level; or when the location parameter is equal to the first parameter threshold value , and if the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the location parameter is equal to the second parameter threshold and the UE satisfies the first cell selection criterion corresponding to the second type of coverage level, it is confirmed that the UE is in the second type of coverage level.
  • the first type of coverage level corresponds to the first parameter threshold
  • the second type of coverage level corresponds to the second parameter threshold and the third parameter threshold
  • the third parameter threshold is smaller than the first parameter threshold and the second parameter threshold
  • the location parameter is less than the first parameter threshold and the second parameter threshold, or the UE does not meet the target cell selection criterion, if the location parameter is greater than the third parameter threshold and the UE meets the second cell selection criterion corresponding to the second coverage level, Determining the second type of coverage level as the coverage enhancement level of the UE;
  • the target cell selection criterion includes a cell selection criterion corresponding to the first type of coverage level and a first cell selection criterion corresponding to the second type of coverage level.
  • the UE when the location parameter is equal to the first parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the UE when the location parameter is equal to the second parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the UE when the location parameter is equal to the third parameter threshold, and the UE does not meet the target cell selection criterion and meets the second cell selection criterion corresponding to the second type of coverage level, determine that the coverage enhancement level of the UE is the second type of coverage. grade.
  • the location parameters include:
  • the inclination of the UE to the cell serving satellite relative to the horizontal direction of the ground, and the UE is located within the serving range of the cell serving satellite.
  • the apparatus includes a first receiving module 902;
  • the first receiving module 902 is configured to receive a broadcast message sent by a network device, where the broadcast message includes configuration information of the first type of coverage level and the second type of coverage level.
  • the configuration information includes parameter thresholds corresponding to the first type of coverage level and the second type of coverage level.
  • the configuration information includes parameters used by the cell selection criteria corresponding to the first type of coverage level and the second type of coverage level.
  • the device for determining the coverage enhancement level determines the coverage enhancement level based on the location parameter of the UE, which ensures the random access performance of the UE, and can clearly distinguish the UE located in the center of the cell based on the location parameter of the UE. and the area located at the cell edge, so that a lower coverage enhancement level can be selected for UEs in the cell center, and a smaller number of repeated transmissions can be used to reduce the delay of accessing the network; and a higher coverage enhancement level is selected for UEs at the cell edge. level, use a larger number of repeated transmissions to improve the success rate of random access.
  • the apparatus can be implemented as a part or all of a network device through software, hardware, or a combination of the two, and the apparatus includes:
  • the second sending module 1001 is configured to send configuration information to the UE, where the configuration information includes parameters required for determining the coverage enhancement level according to a location parameter configured for the UE, and the location parameter is used to reflect the location of the UE.
  • the configuration information includes N position parameter thresholds for dividing the position parameter range, where N is a positive integer greater than or equal to 1.
  • the configuration information includes N+1 random access channel resources corresponding to N+1 coverage enhancement levels.
  • the random access channel resources include at least one of the following:
  • the second sending module 1001 is further configured to send a physical downlink control channel command to the UE, where the physical downlink control channel command carries the coverage enhancement level of the UE.
  • the configuration information is configured publicly for the cells, and the configuration information is carried by the system message.
  • the configuration information includes parameter thresholds corresponding to the first type of coverage level and the second type of coverage level.
  • the configuration information includes parameters used by the cell selection criteria corresponding to the first type of coverage level and the second type of coverage level.
  • the device for configuring the coverage enhancement level determines the coverage enhancement level based on the location parameter of the UE, ensures the random access performance of the UE, and can clearly distinguish the UE located in the center of the cell based on the location parameter of the UE and the area located at the cell edge, so that a lower coverage enhancement level can be selected for UEs in the cell center, and a smaller number of repeated transmissions can be used to reduce the delay of accessing the network; and a higher coverage enhancement level is selected for UEs at the cell edge. level, use a larger number of repeated transmissions to improve the success rate of random access.
  • FIG. 16 shows a schematic structural diagram of a UE provided by an exemplary embodiment of the present application.
  • the UE includes: a processor 111 , a receiver 112 , a transmitter 113 , a memory 114 , and a bus 115 .
  • the processor 111 includes one or more processing cores, and the processor 111 executes various functional applications and information processing by running software programs and modules.
  • the receiver 112 and the transmitter 113 may be implemented as a communication component, which may be a communication chip.
  • the memory 114 is connected to the processor 111 through the bus 115 .
  • the memory 114 may be configured to store at least one instruction, and the processor 111 may be configured to execute the at least one instruction to implement the various steps in the above method embodiments.
  • memory 114 may be implemented by any type or combination of volatile or non-volatile storage devices including, but not limited to, magnetic or optical disks, electrically erasable programmable Read Only Memory (EEPROM, Electrically Erasable Programmable Read Only Memory), Erasable Programmable Read Only Memory (EPROM, Erasable Programmable Read Only Memory), Static Access Memory (SRAM, Static Random-Access Memory), Read Only Memory (ROM, Read Only Memory), magnetic memory, flash memory, programmable read only memory (PROM, Programmable Read Only Memory).
  • EEPROM Electrically Erasable Programmable Read Only Memory
  • EPROM Erasable Programmable Read Only Memory
  • SRAM Static Access Memory
  • PROM Programmable Read Only Memory
  • a non-transitory computer-readable storage medium including instructions such as a memory including instructions, is also provided, and the instructions are executable by a processor of the UE to complete the above-mentioned method for determining the coverage enhancement level.
  • the non-transitory computer-readable storage medium may be ROM, Random-Access Memory (RAM, Random-Access Memory), Compact Disc Read Only Memory (CD-ROM, Compact Disc Read Only Memory), magnetic tape, floppy disk and optical data storage devices, etc.
  • a non-transitory computer-readable storage medium when an instruction in the non-transitory computer storage medium is executed by a processor of a UE, enables the UE to perform the above-mentioned method for determining the coverage enhancement level.
  • An exemplary embodiment of the present application also provides a network device, the network device comprising: a processor; a transceiver connected to the processor; wherein the processor is configured to load and execute executable instructions to The method for configuring the coverage enhancement level provided by each of the above method embodiments is implemented.
  • An exemplary embodiment of the present application further provides a computer-readable storage medium, where at least one instruction, at least one piece of program, code set or instruction set is stored in the computer-readable storage medium, the at least one instruction, the At least one piece of program, the code set or the instruction set is loaded and executed by the processor to implement the method for determining the coverage enhancement level provided by the above various method embodiments, or the method for configuring the coverage enhancement level.
  • references herein to "a plurality” means two or more.
  • "And/or" which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone.
  • the character “/” generally indicates that the associated objects are an "or" relationship.

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Abstract

一种覆盖增强等级的确定方法、配置方法、装置及存储介质,包括:基于终端的位置参数确定覆盖增强等级;其中,位置参数用于反映终端的位置。

Description

覆盖增强等级的确定方法、配置方法、装置及存储介质 技术领域
本申请涉及通信领域,特别涉及一种覆盖增强等级的确定方法、配置方法、装置及存储介质。
背景技术
目前,第三代合作伙伴计划(third Generation Partnership Project,3GPP)正在研究非地面通信网络(Non-Terrestrial Network,NTN)技术。在NTN系统中,一般采用卫星通信的方式向地面终端(User Equipment,UE)提供通信服务。
在长期演进(Long Term Evolution,LTE)的地面网络中,UE处于小区中心时的参考信号接收功率(Reference Signal Receiving Power,RSRP)要明显高于UE处于小区边缘时的RSRP。由于存在明显的“远近效应”,因此,UE可以基于RSRP测量来进行随机接入过程中覆盖增强等级的选择。
但是,在NTN系统中,对于处于小区中心的UE和处于小区边缘的UE,两者对应的RSRP差异并不明显,导致选择的覆盖增强等级不准确。
发明内容
本申请实施例提供了一种覆盖增强等级的确定方法、配置方法、装置及存储介质。所述技术方案如下:
根据本申请实施例的一个方面,提供了一种覆盖增强等级的确定方法,该方法由终端执行,该方法包括:
基于终端的位置参数确定覆盖增强等级;其中,位置参数用于反映终端的位置。
根据本申请实施例的另一方面,提供了一种覆盖增强等级的配置方法,该方法由网络设备执行,该方法包括:
向终端发送配置信息,配置信息包括为终端配置的用于根据位置参数确定覆盖增强等级所需的参数,位置参数用于反映终端的位置。
根据本申请实施例的另一方面,提供了一种覆盖增强等级的确定装置,该装置包括:
第一处理模块,用于基于终端的位置参数确定覆盖增强等级;其中,位置参数用于反映终端的位置。
根据本申请实施例的另一方面,提供了一种覆盖增强等级的配置装置,该装置包括:
第二发送模块,用于向终端发送配置信息,配置信息包括为终端配置的用于根据位置参数确定覆盖增强等级所需的参数,位置参数用于反映终端的位置。
根据本申请实施例的另一方面,提供了一种终端,该终端包括:
处理器;
与处理器相连的收发器;
其中,处理器被配置为加载并执行可执行指令以实现如上各个方面所述的覆盖增强等级的确定方法。
根据本申请实施例的另一方面,提供了一种网络设备,该网络设备包括:
处理器;
与处理器相连的收发器;
其中,处理器被配置为加载并执行可执行指令以实现如上各个方面所述的覆盖增强等级的配置方法。
根据本申请实施例的另一方面,提供了一种计算机存储介质,该计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集,上述至少一条指令、至少一段程序、代码集或指令集由处理器加载并执行以实现如上述各个方面所述的覆盖增强等级的确定方法,或者,覆盖增强等级的配置方法。
本申请实施例提供的技术方案可以包括以下有益效果:
在NTN通信的情况下,该方法提供了基于UE的位置参数确定覆盖增强等级的方式,保证了UE的随机接入性能,可以基于UE的位置参数明显地区分位于小区中心的UE和位于小区边缘的UE,从而能够为小区中心的UE选择较低的覆盖增强等级,使用较小的重复传输次数以降低接入网络的时延;以及为小区边缘的UE选择较高的覆盖增强等级,使用较大的重复传输次数以提高随机接入成功率。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本申请。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介 绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是根据一示例性实施例示出的基于透传载荷的NTN场景的示意图;
图2是根据一示例性实施例示出的基于再生载荷的NTN场景的示意图;
图3是根据一示例性实施例示出的覆盖增强等级的确定方法的流程图;
图4是根据另一示例性实施例示出的覆盖增强等级的确定方法的流程图;
图5是根据另一示例性实施例示出的覆盖增强等级的确定方法的流程图;
图6是根据另一示例性实施例示出的覆盖增强等级的确定方法的流程图;
图7是根据另一示例性实施例示出的覆盖增强等级的确定方法的流程图;
图8是根据另一示例性实施例示出的覆盖增强等级的确定方法的流程图;
图9是根据另一示例性实施例示出的覆盖增强等级的确定方法的流程图;
图10是根据一示例性实施例示出的覆盖增强等级的配置方法的流程图;
图11是根据一示例性实施例示出的位置参数阈值与覆盖增强等级的对应关系示意图;
图12是根据另一示例性实施例示出的位置参数阈值与覆盖增强等级的对应关系示意图;
图13是根据另一示例性实施例示出的位置参数阈值与覆盖增强等级的对应关系示意图;
图14是根据一示例性实施例示出的覆盖增强等级的确定装置的框图;
图15是根据一示例性实施例示出的覆盖增强等级的配置装置的框图;
图16是根据一示例性实施例示出的终端的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明,其示例表示在附图中。下面的描述涉及附图时,除非另有表示,不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反,它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
目前,3GPP正在研究NTN技术。在NTN系统中,一般采用卫星通信的方式向地面UE提供通信服务。相对于地面蜂窝网通信,卫星通信具有很多独特的优点。首先,卫星通信不受用户地域的限制;例如一般的陆地通信不能覆盖海洋、高山、沙漠等无法搭设通信设备的区域,或者由于人口稀少而不做通信覆盖的区域,而对于卫星通信来说,由于一颗卫星即可以覆盖较大的地面,加之卫星可以围绕地球做轨道运动,因此,在理论上地球上每一个角落都可以被卫星通信覆盖。其次,卫星通信有较大的社会价值。卫星通信在边远山区、贫穷落后的国家或地区都能够以较低的成本覆盖到,从而使这些地区的人们享受到先进的语音通信和移动互联网技术,有利于缩小与发达地区之间的数字鸿沟,促进这些地区的发展。再次,卫星通信距离远,且通信距离增大时通讯成本没有明显增加。最后,卫星通信的稳定性高,不受自然灾害的限制。
通信卫星按照轨道高度的不同分为低地球轨道(Low-Earth Orbit,LEO)卫星、中地球轨道(Medium-Earth Orbit,MEO)卫星、地球同步轨道(Geostationary Earth Orbit,GEO)卫星、高椭圆轨道(High Elliptical Orbit,HEO)卫星等等。目前阶段主要研究的是LEO和GEO。
LEO
低轨道卫星高度范围为500千米(km)~1500km,相应轨道周期约为1.5小时~2小时。UE间单跳通信的信号传播延迟一般小于20毫秒(ms)。最大卫星可视时间20分钟。信号传播距离短,链路损耗少,对UE的发射功率要求不高。
GEO
地球同步轨道卫星,轨道高度为35786km,围绕地球旋转周期为24小时。UE间单跳通信的信号传播延迟一般为250ms。
为了保证通信卫星的覆盖以及提升整个卫星通信系统的系统容量,通信卫星采用多波束覆盖地面,一颗通信卫星可以形成几十甚至数百个波束来覆盖地面;一个卫星波束可以覆盖直径几十至上百公里的地面区域。
目前,存在至少两种NTN场景:基于透传载荷(payload)的NTN场景和基于再生载荷的NTN场景。图1示出了一种基于透传载荷的NTN场景的示意图,图2示出了一种基于再生载荷的NTN场景的示意图。
NTN网络由以下网元组成:
·1个或者多个网络设备16,用于连接卫星14和地面上的数据网络18。
·馈线链路(Feeder Link):用于网络设备16和卫星14之间通信的链路;
·服务链路(Service Link):用于UE 12和卫星14之间通信的链路;
·卫星14:从其提供的功能上可以分为透传载荷和再生载荷这两种。
·透传载荷:只提供无线频率滤波,频率转换和放大的功能。只提供信号的透明转发,不会改变其转发的波形信号。
·再生载荷:除了提供无线频率滤波,频率转换和放大的功能,还可以提供解调/解码,路由/转换,编码/调制的功能。其具有基站的部分或者全部功能。
·ISL(Inter-Satellite Links,星间链路):存在于再生载荷的NTN场景中。
窄带物联网(Narrow Band Internet of Things,NB-IoT)/增强的机器类型通信(enhanced Machine Type Communication,eMTC)覆盖等级
为了支持覆盖增强,NB-IoT和eMTC中引入了覆盖增强等级(Coverage Enhancement Level,CE Level)。例如,对于NB-IoT,定义了CE Level 0、CE Level 1、CE Level 2共三个等级,分别对应可对抗144分贝(dB)、154dB、164dB的信号衰减。其中CE Level 0称为常规覆盖(normal coverage),其余的CE Level称为增强覆盖(enhanced coverage)。基站与NB-IoT的UE之间会根据其所在的CE Level来选择相对应的重复传输次数。
在LTE的地面网络中,UE处于小区中心时的RSRP要明显高于UE处于小区边缘时的RSRP。由于存在明显的“远近效应”,因此,可以基于RSRP测量来进行随机接入类型的选择。
但是,在NTN系统中,对于处于小区中心的UE和处于小区边缘的UE,他们对应的RSRP差异并不明显。如果基于RSRP测量来选择覆盖等级,一方面很难设置合适的用于覆盖等级选择的RSRP阈值,另一方面,由于RSRP测量存在误差,很可能导致UE选择不合适的覆盖等级。例如,在随机接入过程中,对于小区中心的用户,由于测量的RSRP偏低导致选择了覆盖增强等级,使用较大的重复传输次数,增加了随机接入时延;对于小区边缘的用户,由于测量的RSRP偏高导致最初选择了较低的覆盖等级,可能导致随机接入尝试次数增加或者直接导致随机接入失败,严重影响用户体验。
图3示出了本申请一个示例性实施例提供的覆盖增强等级的确定方法的流程图,该方法应用于NTN场景中,由UE执行,该方法包括:
步骤201,基于UE的位置参数确定覆盖增强等级;其中,位置参数用于反映UE的位置。
示例性的,上述位置参数用于反映UE的地理位置;
或者,上述位置参数用于反映UE相对于小区服务卫星的相对位置、相对距离、相对倾角中的至少一种;
或者,上述位置参数用于反映UE相对于卫星服务小区中心地面参考点的相对位置;
或者,UE在卫星服务小区中的位置。
可选地,上述UE的位置参数包括以下至少一项:
UE与小区服务卫星之间的第一距离,UE位于上述小区服务卫星的服务范围内;
UE与地面网络(或地面基站)的第二距离;
UE与卫星服务小区中心地面参考点之间的第三距离;
UE与小区服务卫星之间的第一往返时延(Round Trip Time,RTT);
UE与地面网络之间的第二RTT;
UE至小区服务卫星相对于地面水平方向的倾角。
示例性的,上述卫星服务小区是指UE的驻留小区。在不同类型的NTN系统中,卫星服务小区还可以称为服务小区、小区、卫星小区,以及地面参考点还可以称为参考点、地面标记点,随着NTN技术的演进,卫星服务小区这一描述可能会变换,地面参考点这一描述也可能会变换。
示例性的,UE基于上述第一距离确定覆盖增强等级,或者,UE基于上述第二距离确定覆盖增强等级,或者,UE基于上述第三距离确定覆盖增强等级,或者,UE基于上述第一RTT确定覆盖增强等级,或者,UE基于上述第二RTT确定覆盖增强等级,或者,UE基于上述倾角确定覆盖增强等级。
示例性的,上述小区服务卫星可以是LEO卫星、MEO卫星、GEO卫星和HEO卫星中的至少一种。
综上所述,本实施例提供的覆盖增强等级的确定方法,在NTN通信的情况下,基于UE的位置参数确定覆盖增强等级,保证了UE的随机接入性能,可以基于UE的位置参数明显地区分位于小区中心的UE和位于小区边缘的区域,从而能够为小区中心的UE选择较低的覆盖增强等级,使用较小的重复传输次数以降低接入网络的时延;以及为小区边缘的UE选择较高的覆盖增强等级,使用较大的重复传输次数以提高随机接入成功率。
在随机接入过程中,UE可以基于位置参数所属的位置参数范围来确定UE的覆盖增强等级,示例性的,如图4,示出了本申请一个示例性实施例提供的覆盖增强等级的确定方法,该方法应用于NTN场景中,由UE执行,该方法包括:
步骤301,在随机接入过程中,基于UE的位置参数所属的位置参数范围,确定UE的覆盖增强等级。
在一个可选的实施例中,存在位置参数与覆盖增强等级之间呈正相关的第一种情况,也即随着位置参数范围的不断增大,覆盖增强等级也越高;因此,UE响应于位置参数大于第N个位置参数阈值,将第N级覆盖增强等级确定为UE的覆盖增强等级;响应于位置参数大于第N-i个位置参数阈值且小于或等于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为UE的覆盖增强等级;响应于位置参数小于或等于第1个位置参数阈值,将第0级覆盖增强等级确定为UE的覆盖增强等级;其中,第N-i个位置参数阈值小于第N-i+1个位置参数阈值,N为大于或者等于1的正整数,i为小于N的正整数;
或者,UE响应于位置参数大于或等于第N个位置参数阈值,将第N级覆盖增强等级确定为UE的覆盖增强等级;响应于位置参数大于或等于第N-i个位置参数阈值且小于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为UE的覆盖增强等级;响应于位置参数小于第1个位置参数阈值,将第0级覆盖增强等级确定为UE的覆盖增强等级。
也就是说,在位置参数大于第N个位置参数阈值的情况下,确认UE位于第N级覆盖增强等级;在位置参数大于第N-i个位置参数阈值且小于或等于第N-i+1个位置参数阈值的情况下,确认UE位于第N-i级覆盖增强等级;在位置参数小于或等于第1个位置参数阈值的情况下,确认UE位于第0级覆盖增强等级;
或者,在位置参数大于或等于第N个位置参数阈值的情况下,确认UE位于第N级覆盖增强等级;在位置参数大于或等于第N-i个位置参数阈值且小于第N-i+1个位置参数阈值的情况下,确认UE位于第N-i级覆盖增强等级;在位置参数小于第1个位置参数阈值的情况下,确认UE位于第0级覆盖增强等级。
在上述第一种情况下,位置参数可以包括以下至少一项:
UE与小区服务卫星之间的第一距离,UE位于小区服务卫星的服务范围内;
UE与地面网络之间的第二距离;
UE与卫星服务小区中心地面参考点之间的第三距离;
UE与小区服务卫星之间的第一往返时延;
UE与地面网络之间的第二往返时延。
在另一个可选的实施例中,存在位置参数与覆盖增强等级之间呈负相关的第二种情况,也即随着位置参数范围的不断增大,覆盖增强等级越低;因此,UE响应于位置参数小于第N个位置参数阈值,将第N级覆盖增强等级确定为UE的覆盖增强等级;响应于位置参数小于第N-i个位置参数阈值且大于或等于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为UE的覆盖增强等级;响应于位置参数大于或等于第1个位置参数阈值,将第0级覆盖增强等级确定为UE的覆盖增强等级;其中,第N-i个位置参数阈值大于第N-i+1个位置参数阈值,N为大于或者等于1的正整数,i为小于N的正整数;
或者,UE响应于位置参数小于或等于第N个位置参数阈值,将第N级覆盖增强等级确定为UE的覆盖增强等级;响应于位置参数小于或等于第N-i个位置参数阈值且大于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为UE的覆盖增强等级;响应于位置参数大于第1个位置参数阈值,将第0级覆盖增强等级确定为UE的覆盖增强等级。
也就是说,在位置参数小于第N个位置参数阈值的情况下,确认UE位于第N级覆盖增强等级;在位置参数小于第N-i个位置参数阈值且大于或等于第N-i+1个位置参数阈值的情况下,确认UE位于第N-i级覆盖增强等级;在位置参数大于或等于第1个位置参数阈值的情况下,确认UE位于第0级覆盖增强等级;
或者,在位置参数小于或等于第N个位置参数阈值的情况下,确认UE位于第N级覆盖增强等级;在位置参数小于或等于第N-i个位置参数阈值且大于第N-i+1个位置参数阈值的情况下,确认UE位于第N-i级覆盖增强等级;在位置参数大于第1个位置参数阈值的情况下,确认UE位于第0级覆盖增强等级。
在上述第二种情况下,位置参数可以包括UE至小区服务卫星相对于地面水平方向的倾角,UE位于小区服务卫星的服务范围内。
需要说明的是,UE与小区服务卫星之间的第一距离、UE与地面网络之间的第二距离、UE与卫星服务小区中心地面参考点之间的第三距离、UE与小区服务卫星之间的第一RTT、UE与地面网络之间的第二往返时延、UE至小区服务卫星相对于地面水平方向的倾角中的每一项位置参数,可以单独在本实施例中被用于执行覆盖增强等级的确定步骤,以实现成为一个单独的实施例。
综上所述,本实施例提供的覆盖增强等级的确定方法,采用上述第一距离、第二距离、第三距离、第一RTT、第二RTT、倾角中的至少一项参数划分位置参数范围,进而基于位置参数范围对应配置覆盖增强 等级,在TNT的场景下,上述位置参数能够明显地体现“远近效应”,尤其是上述第一距离、第二距离和倾角,可以更直接地体现UE相对于卫星服务小区中心的远近距离,从能够更清晰地划分每一个覆盖增强等级对应的位置参数范围,以在随机接入过程中更准确地确定出UE的覆盖增强等级。
其次,在采用第一距离、或第二距离、或第三距离、或第一RTT、或第二RTT、或倾角来确定覆盖增强等级的情况下,由于位置参数所需满足的条件简单,所以可以更快速地确定出UE的覆盖增强等级。
在一些实施例中,还可以在UE的位置参数的基础上,结合UE的下行信号质量来确定UE的覆盖增强等级,示例性的,如图5,上述步骤303可以由步骤3011至步骤3012来实现,步骤如下:
步骤3011,在随机接入过程中,在满足位置参数属于第N+1个位置参数范围,以及UE的下行信号质量属于第N+1个质量参数范围中至少一项的情况下,将第N级覆盖增强等级作为UE的覆盖增强等级。
步骤3012,在位置参数不属于第N-i+2个位置参数范围到第N+1个位置参数范围中的任何一个且下行信号质量不属于第N-i+2个质量参数范围到第N+1个质量参数范围中的任何一个的情况下,若满足位置参数属于第N-i+1个位置参数范围、以及下行信号质量属于第N-i+1个质量参数范围中的至少一项,将第N-i级覆盖增强等级作为UE的覆盖增强等级。
步骤3013,在位置参数不属于第2个位置参数范围到第N+1个位置参数范围中的任何一个且下行信号质量不属于第2个质量参数范围到第N+1个质量参数范围中的任何一个的情况下,若满足位置参数属于第1个位置参数范围、且下行信号质量属于第1个质量参数范围,将第0级覆盖增强等级作为UE的覆盖增强等级。
其中,N为大于或者等于1的正整数,i为小于N的正整数。也就是说,在随机接入过程中,若位置参数属于第N+1个位置参数范围,和/或,UE的下行信号质量属于第N+1个质量参数范围,UE将第N级覆盖增强等级作为UE的覆盖增强等级;若位置参数不属于第N+1个位置参数范围且下行信号质量不属于第N+1个质量参数范围,则确定是否是位置参数属于第N个位置参数范围,和/或,下行信号质量属于第N个质量参数范围;若是位置参数属于第N个位置参数范围,和/或,下行信号质量属于第N个质量参数范围,UE将第N-1级覆盖增强等级作为UE的覆盖增强等级,以此类推。
可选地,上述下行信号质量包括以下至少一项:RSRP;RSRQ;信干噪比(Signal to Interference plus Noise Ratio,SINR)。
示例性的,上述参数范围的配置情况包括如下两种:
第一种方式:
第N+1个位置参数范围是指大于或等于第N个位置参数阈值的参数范围,第N-i+1个位置参数范围是指大于或等于第N-i个位置参数阈值且小于第N-i+1个位置参数阈值的参数范围,第1个位置参数范围是指小于第1个位置参数阈值的参数范围;第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于或等于第N-i+1个质量参数阈值的参数范围,第1个质量参数范围是指大于或等于第1个质量参数阈值的参数范围;
或者,第N+1个位置参数范围是指大于第N个位置参数阈值的参数范围,第N-i+1个位置参数范围是指大于第N-i个位置参数阈值且小于或等于第N-i+1个位置参数阈值的参数范围,第1个位置参数范围是指小于或等于第1个位置参数阈值的参数范围;第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于或等于第N-i+1个质量参数阈值的参数范围,第1个质量参数范围是指大于或等于第1个质量参数阈值的参数范围。
在第一种方式中,位置参数包括以下至少一项:UE与小区服务卫星之间的第一距离,UE位于小区服务卫星的服务范围内;UE与地面网络之间的第二距离;UE与卫星服务小区中心地面参考点之间的第三距离;UE与小区服务卫星之间的第一往返时延;UE与地面网络之间的第二往返时延。
第二种方式:
第N+1个位置参数范围是指小于或等于第N个位置参数阈值的参数范围,第N-i+1个位置参数范围是指小于或等于第N-i个位置参数阈值且大于第N-i+1个位置参数阈值的参数范围,第1个位置参数范围是指大于第1个位置参数阈值的参数范围;第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于或等于第N-i+1个质量参数阈值的参数范围,第1个质量参数范围是指大于或等于第1个质量参数阈值的参数范围;
或者,第N+1个位置参数范围是指小于第N个位置参数阈值的参数范围,第N-i+1个位置参数范围是指小于第N-i个位置参数阈值且大于等于第N-i+1个位置参数阈值的参数范围,第1个位置参数范围是指大于等于第1个位置参数阈值的参数范围;第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于或等于第N-i+1个质量参数阈值的参数范围,第1个质量参数范围是指大于或等于第1个质量参数阈值的参数范围。
在第二种方式中,位置参数包括:UE至小区服务卫星相对于地面水平方向的倾角,UE位于小区服务卫星的服务范围内。
需要说明的是,UE与小区服务卫星之间的第一距离、UE与地面网络之间的第二距离、UE与卫星服务小区中心地面参考点之间的第三距离、UE与小区服务卫星之间的第一RTT、UE与地面网络之间的第二往返时延、UE至小区服务卫星相对于地面水平方向的倾角中的每一项位置参数,可以单独地与RSRP、RSRQ和SINR中的至少一种下行信号质量结合,在本实施例中被用于执行覆盖增强等级的确定步骤,以实现成为一个单独的实施例。
综上所述,本实施例提供的覆盖增强等级的确定方法,在UE的位置参数的基础上,结合了UE的下行信号质量来确定UE的覆盖增强等级,通过约束条件的增加,进一步提高了UE的覆盖增强等级确认的准确率,进而提升了UE的随机接入效率以及随机接入成功率。
在一些实施例中,存在由物理下行控制信道命令触发UE的随机接入过程的情况,在这一情况下,UE的覆盖增强等级可以是由网络设备来配置的,示例性的,可以采用如下三种方式通过网络设备为UE配置覆盖增强等级:
第一种方式,如图6所示,步骤如下:
步骤401,UE响应于物理下行控制信道命令触发随机接入过程、且物理下行控制信道命令指示了起始覆盖增强等级,将起始覆盖增强等级确定为UE的覆盖增强等级。
示例性的,由网络设备向UE发送PDCCH order,该PDCCH order携带有UE的覆盖增强等级;UE接收网络设备发送的PDCCH order,为UE配置随机接入过程中的覆盖增强等级。
示例性的,在物理下行控制信道命令触发的随机接入过程中,由网络设备确定UE的起始覆盖增强等级,通过物理下行控制信道命令(PDCCH order)携带起始覆盖增强等级,以直接为UE配置起始覆盖增强等级。
也就是说,在UE的随机接入过程是由物理下行控制信道命令触发的情况下,若物理下行控制信道命令指示了起始覆盖增强等级,则确认UE处于上述起始覆盖增强等级。
也可说是,UE接收网络设备发送的PDCCH order,若PDCCH order携带起始覆盖增强等级,为UE配置起始覆盖增强等级。
第二种方式,如图7所示,步骤如下:
步骤501,UE响应于物理下行控制信道命令触发随机接入过程、且网络设备指示了起始窄带物理随机接入信道(Narrowband Physical Random Access Channel,NPRACH)重复传输次数,将起始NPRACH重复传输次数对应的覆盖增强等级确定为UE的覆盖增强等级。
示例性的,UE中配置有NPRACH与覆盖增强等级的对应关系,该对应关系可以是由网络设备预先配置的,或者是由协议标准定义的。在PDCCH order触发的随机接入过程中,UE基于上述对应关系确定出网络设备指示的起始NPRACH对应的起始覆盖增强等级,将起始覆盖增强等级作为UE的覆盖增强等级。示例性的,上述起始NPRACH是由网络设备通过网络信令为UE配置的。示例性的,上述起始NPRACH是网络设备通过小区内的广播消息为UE配置的。
也就是说,在UE的随机接入过程是由物理下行控制信道命令触发的情况下,若网络设备指示了起始NPRACH重复传输次数,则确认UE处于起始NPRACH重复传输次数对应的覆盖增强等级。
第三种方式,如图8所示,步骤如下:
步骤601,UE响应于物理下行控制信道命令触发随机接入过程、且高层配置了起始覆盖增强等级,将起始覆盖增强等级确定为UE的覆盖增强等级。
示例性的,在PDCCH order触发的随机接入过程中,UE直接将高层配置的起始覆盖增强等级作为UE的覆盖增强等级。示例性的,起始覆盖增强等级是由网络设备通过高层信令为UE配置的。示例性的,起始覆盖增强等级是网络设备通过小区内的广播消息为UE配置的。示例性的,上述高层是指物理层之上的协议层。
也就是说,在UE的随机接入过程是由物理下行控制信道命令触发的情况下,若高层为UE配置了起始覆盖增强等级,确认UE处于上述起始覆盖增强等级。
上述三种方式还可以配合使用,示例性的,UE确定随机接入过程是否是由物理下行控制信道命令触发的;若是,在物理下行控制信道命令指示了起始覆盖增强等级的情况下,确认UE位于物理下行控制信道命令指示的起始覆盖增强等级;在物理下行控制信道命令未指示起始覆盖增强等级,且网络设备指示了起始NPRACH重复传输次数的情况下,确认UE位于起始NPRACH重复传输次数对应的覆盖增强等级;在物理下行控制信道命令未指示起始覆盖增强等级、网络设备未指示起始NPRACH重复传输次数、以及高层指示了起始覆盖增强等级的情况下,确认UE位于起始覆盖增强等级。上述是对三种方式配合使用的 示例性说明,本实施例中对配合使用时三种方式的执行优先级不加以限定。
综上所述,本实施例中提供的确定覆盖增强等级的三种方法,是由网络设备为UE直接配置随机接入过程中的起始覆盖增强等级,从而保证了UE的随机接入效率。
在小区选择过程中,UE可以基于位置参数所属的位置参数范围来确定UE的覆盖增强等级,示例性的,如图9,示出了本申请一个示例性实施例提供的覆盖增强等级的确定方法的流程图,该方法应用于NTN场景中,由UE执行,该方法包括:
步骤701,UE在小区选择过程中,基于UE的位置参数确定UE的覆盖增强等级为第一类覆盖等级或者第二类覆盖等级。
示例性的,上述第一类覆盖等级包括第0级覆盖增强等级,也成为常规覆盖(normal coverage);第二类覆盖等级包括除第0级覆盖增强等级之外的其他覆盖增强等级,也成为增强覆盖(enhanced coverage)。
UE确定UE的覆盖增强等级包括两种情形:
第一种情形,仅基于UE的位置参数来确定UE的覆盖增强等级;
第二种情形,在UE的位置参数的基础上,结合小区选择准则来确定UE的覆盖增强等级。
在第一种情形下:
在一个可选的实施例中,第一类覆盖等级对应第一参数阈值;UE在小区选择过程中,在UE的位置参数小于第一参数阈值的情况下,若UE仅能够获取第一类信息块,确定UE的覆盖增强等级为第二类覆盖等级;若UE能够获取第二类信息块,确定UE的覆盖增强等级为第一类覆盖等级。
也就是说,UE在小区选择过程中,在位置参数小于第一参数阈值的情况下,若UE不能够获取第二类信息块,但能够获取第一类信息块,则确定UE的覆盖增强等级为第二类覆盖等级;UE在小区选择过程中,在位置参数小于第一参数阈值的情况下,若UE能够获取第二类信息块,确定UE的覆盖增强等级为第一类覆盖等级。
可选地,在位置参数等于第一参数阈值的情况下,确定UE的覆盖增强等级为第一类覆盖等级,或者,在位置参数等于第一参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
示例性的,上述第一类信息块包括主信息块(Master Information Block,MIB)、带宽受限系统信息块1(System Information Block1-Bandwidth Reduced,SIB1-BR)和系统信息块2(System Information Block2,SIB2);第二类信息块包括系统信息块1(System Information Block1,SIB1)。
在另一个可选的实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值,第一参考阈值小于第二参考阈值;
UE在小区选择过程中,在位置参数大于第一参数阈值且小于第二参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
也即,第一类覆盖等级对应配置有第一参数阈值,第二类覆盖等级对应配置有第二参数阈值;在小区选择过程中,UE响应于位置参数大于第一参数阈值且位置参数小于第二参数阈值,确认UE位于第二类覆盖等级。
可选地,在位置参数等于第一参数阈值时,确定UE的覆盖增强等级为第一类覆盖等级,或者在位置参数等于第一参数阈值时,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第二参数阈值时,确定UE的覆盖增强等级为第二类覆盖等级。
在另一个可选的实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数值和第三参数阈值,第三参数阈值大于第一参数阈值和第二参数阈值;UE在小区选择过程中,在位置参数大于第一参数阈值和第二参数阈值,且位置参数小于第三参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
存在一种情况,在确定第二参数阈值大于第一参数阈值的前提下,UE在小区选择的过程中,在位置参数大于第二参数阈值且小于第三参数阈值的情况下,确认UE位于第二类覆盖等级。
可选地,在位置参数等于第二参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第三参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
在第二种情形下:
在一个可选的实施例中,第一类覆盖等级对应第一参数阈值;UE在小区选择过程中,在位置参数小于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,若UE仅能够获取第一类信息块,确定UE的覆盖增强等级为第二类覆盖等级;若UE能够获取第二类信息块,确定UE的覆盖增强等级为第一类覆盖等级。
也可以表述为,UE在小区选择过程中,在位置参数小于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,确定UE能够获取的至少一个信息块;在至少一个信息块仅包括第一类信 息块的情况下,确定UE的覆盖增强等级为第二类覆盖等级;在至少一个信息库包括第二类信息块的情况下,确定UE的覆盖增强等级为第一类覆盖等级。
示例性的,第一类覆盖等级配置有第一参数阈值,以及小区选择准则;在小区选择过程中,UE确定位置参数小于第一参数阈值且UE满足小区选择准则的情况下,若是UE能够获取第二类信息块,确认UE处于第一类覆盖等级;若是UE仅能够获取第一类信息块,确认UE处于第二类覆盖等级。
可选地,在位置参数等于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,确认UE处于第一类覆盖等级,或者在位置参数等于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,确认UE处于第二类覆盖等级。
示例性的,第一类信息块包括MIB、SIB1-BR和SIB 2;第二类信息块包括SIB1。
在另一个可选的实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值,第一参数阈值小于第二参数阈值;UE在小区选择过程中,如果UE的位置参数大于第一参数阈值或者UE不满足第一类覆盖等级对应的小区选择准则,即UE不满足第一类覆盖等级的条件,在这种情况下,在位置参数小于第二参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
也即,第一类覆盖等级配置有第一参数阈值,以及小区选择准则;第二类覆盖等级配置有第二参数阈值,以及第一小区选择准则;在小区选择过程中,如果UE的位置参数大于第一参数阈值或者UE不满足第一类覆盖等级对应的小区选择准则,在这种情况下,UE确定位置参数小于第二参数阈值,且UE满足第一小区选择准则,则确认UE位于第二类覆盖等级。
可选地,在位置参数等于第一参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确定UE处于第一类覆盖等级;或者在位置参数等于第一参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在位置参数等于第二参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确认UE处于第二类覆盖等级。
在另一个可选的实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值和第三参数阈值,第三参数阈值大于第一参数阈值和第二参数阈值;UE在小区选择过程中,在UE不满足目标小区选择准则,或者在位置参数大于第一参数阈值和第二参数阈值的情况下,确定位置参数小于第三参数阈值,且UE满足第二类覆盖等级对应的第二小区选择准则,则将第二类覆盖等级确定为UE的覆盖增强等级;其中,目标小区选择准则包括第一类覆盖等级对应的小区选择准则和第二类覆盖等级对应的第一小区选择准则。
也即,第一类覆盖等级配置有第一参数阈值,以及小区选择准则;第二类覆盖等级配置有第二参数阈值和第三参数阈值,以及第一小区选择准则和第二小区选择准则;在小区选择过程中,UE在位置参数大于第一参数阈值且大于第二参数阈值,或UE不满足小区选择准则且不满足第一小区选择准则的情况下,继续确定位置参数是否小于第三参数阈值且UE是否满足第二小区选择准则;若是位置参数小于第三参数阈值且UE满足第二小区选择准则,确认UE处于第二类覆盖等级。
存在一种情况,在第二参数阈值大于第一参数阈值的前提下,UE确定位置参数大于第二参数阈值,或UE不满足小区选择准则和第一小区选择准则,继续确定位置参数是否小于第三参数阈值且UE是否满足第二小区选择准则;若是位置参数小于第三参数阈值且UE满足第二小区选择准则,确认UE处于第二类覆盖等级。
可选地,在位置参数等于第一参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第二参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第三参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
在另一个可选的实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值和第三参数阈值,第三参数阈值大于第一参数阈值和第二参数阈值;在小区选择过程中,UE在位置参数大于第一参数阈值或者UE不满足第一类覆盖等级对应的小区选择准则,且位置参数大于第二参数阈值或者UE不满足第二类覆盖等级对应的第一小区选择准则的情况下,确定位置参数是否小于第三参数阈值且UE是否满足第二小区选择准则;若是位置参数小于第三参数阈值且UE满足第二小区选择准则,确认UE处于第二类覆盖等级。
也即,在第1种情况下,在小区选择过程中,UE在位置参数大于第一参数阈值且位置参数大于第二参数阈值,以及位置参数小于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类 覆盖等级;
在第2种情况下,在小区选择过程中,UE在位置参数大于第一参数阈值且UE不满足第二类覆盖等级对应的第一小区选择准则,以及位置参数小于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级;
在第3种情况下,在小区选择过程中,在UE不满足第一类覆盖等级对应的小区选择准则且位置参数大于第二参数阈值,以及位置参数小于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
在第4种情况下,在小区选择过程中,在UE不满足第一类覆盖等级对应的小区选择准则且不满足第二类覆盖等级对应的第一小区选择准则,以及位置参数小于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第1种情况下,在小区选择过程中,UE在位置参数等于第二参数阈值,以及位置参数小于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第1种情况下,在小区选择过程中,UE在位置参数等于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第2种情况下,在小区选择过程中,UE在位置参数等于第一参数阈值且UE不满足第二类覆盖等级对应的第一小区选择准则,以及位置参数小于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第2种情况下,在小区选择过程中,在UE不满足第二类覆盖等级对应的第一小区选择准则,以及位置参数等于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第3种情况下,在小区选择过程中,在UE不满足第一类覆盖等级对应的小区选择准则且位置参数等于第二参数阈值,以及位置参数小于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第3种情况下,在小区选择过程中,在UE不满足第一类覆盖等级对应的小区选择准则,以及位置参数等于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第4种情况下,在小区选择过程中,在UE不满足第一类覆盖等级对应的小区选择准则且不满足第二类覆盖等级对应的第一小区选择准则,以及位置参数等于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
示例性的,在上述第一种情形和第二种情形下,位置参数包括以下任意一项:
UE与小区服务卫星之间的第一距离,UE位于小区服务卫星的服务范围内;
UE与地面网络之间的第二距离;
UE与卫星服务小区中心地面参考点之间的第三距离;
UE与小区服务卫星之间的第一RTT;
UE与所述地面网络之间的第二RTT。
在另一个可选的实施例中,UE确定UE的覆盖增强等级包括另外两种情形:
第三种情形,仅基于UE的位置参数来确定UE的覆盖增强等级;
第四种情形,在UE的位置参数的基础上,结合小区选择准则来确定UE的覆盖增强等级。
在第三种情形下:
在一个可选的实施例中,第一类覆盖等级对应第一参数阈值;UE在小区选择过程中,在UE的位置参数大于第一参数阈值的情况下,若UE仅能够获取第一类信息块,确定UE的覆盖增强等级为第二类覆盖等级;若UE能够获取第二类信息块,确定UE的覆盖增强等级为第一类覆盖等级。
也就是说,UE在小区选择过程中,在位置参数大于第一参数阈值的情况下,若UE不能够获取第二类信息块,但能够获取第一类信息块,则确定UE的覆盖增强等级为第二类覆盖等级;UE在小区选择过程中,在位置参数大于第一参数阈值的情况下,若UE能够获取第二类信息块,确定UE的覆盖增强等级为第一类覆盖等级。
可选地,在位置参数等于第一参数阈值的情况下,确定UE的覆盖增强等级为第一类覆盖等级,或者,在位置参数等于第一参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
示例性的,上述第一类信息块包括主信息块(Master Information Block,MIB)、带宽受限系统信息块1(System Information Block1-Bandwidth Reduced,SIB1-BR)和系统信息块2(System Information Block2,SIB2);第二类信息块包括系统信息块1(System Information Block1,SIB1)。
在另一个可选的实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值,第一参考阈值大于第二参考阈值;
UE在小区选择过程中,在位置参数小于第一参数阈值且大于第二参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
也即,第一类覆盖等级对应配置有第一参数阈值,第二类覆盖等级对应配置有第二参数阈值;在小区选择过程中,UE响应于位置参数小于第一参数阈值且位置参数大于第二参数阈值,确认UE位于第二类覆盖等级。
可选地,在位置参数等于第一参数阈值时,确定UE的覆盖增强等级为第一类覆盖等级,或者在位置参数等于第一参数阈值时,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第二参数阈值时,确定UE的覆盖增强等级为第二类覆盖等级。
在另一个可选的实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数值和第三参数阈值,第三参数阈值小于第一参数阈值和第二参数阈值;UE在小区选择过程中,在位置参数小于第一参数阈值和第二参数阈值,且位置参数大于第三参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
存在一种情况,在确定第二参数阈值小于第一参数阈值的前提下,UE在小区选择的过程中,在位置参数小于第二参数阈值且大于第三参数阈值的情况下,确认UE位于第二类覆盖等级。
可选地,在位置参数等于第二参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第三参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
在第四种情形下:
在一个可选的实施例中,第一类覆盖等级对应第一参数阈值;UE在小区选择过程中,在位置参数大于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,若UE仅能够获取第一类信息块,确定UE的覆盖增强等级为第二类覆盖等级;若UE能够获取第二类信息块,确定UE的覆盖增强等级为第一类覆盖等级。
也可以表述为,UE在小区选择过程中,在位置参数大于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,确定UE能够获取的至少一个信息块;在至少一个信息块仅包括第一类信息块的情况下,确定UE的覆盖增强等级为第二类覆盖等级;在至少一个信息库包括第二类信息块的情况下,确定UE的覆盖增强等级为第一类覆盖等级。
示例性的,第一类覆盖等级配置有第一参数阈值,以及小区选择准则;在小区选择过程中,UE确定位置参数大于第一参数阈值且UE满足小区选择准则的情况下,若是UE能够获取第二类信息块,确认UE处于第一类覆盖等级;若是UE仅能够获取第一类信息块,确认UE处于第二类覆盖等级。
可选地,在位置参数等于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,确认UE处于第一类覆盖等级,或者在位置参数等于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,确认UE处于第二类覆盖等级。
示例性的,第一类信息块包括MIB、SIB1-BR和SIB 2;第二类信息块包括SIB1。
在另一个可选的实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值,第一参数阈值大于第二参数阈值;UE在小区选择过程中,如果UE的位置参数小于第一参数阈值或者UE不满足第一类覆盖等级对应的小区选择准则,即UE不满足第一类覆盖等级的条件,在这种情况下,在位置参数大于第二参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
也即,第一类覆盖等级配置有第一参数阈值,以及小区选择准则;第二类覆盖等级配置有第二参数阈值,以及第一小区选择准则;在小区选择过程中,如果UE的位置参数小于第一参数阈值或者UE不满足第一类覆盖等级对应的小区选择准则,在这种情况下,UE确定位置参数大于第二参数阈值,且UE满足第一小区选择准则,则确认UE位于第二类覆盖等级。
可选地,在位置参数等于第一参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确定UE处于第一类覆盖等级;或者在位置参数等于第一参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在位置参数等于第二参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确认UE处于第二类覆盖等级。
在另一个可选的实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值和第三参数阈值,第三参数阈值小于第一参数阈值和第二参数阈值;UE在小区选择过程中,在UE不满足目标小区选择准则,或者在位置参数小于第一参数阈值和第二参数阈值的情况下,确定位置参数大于第三参数阈值,且UE满足第二类覆盖等级对应的第二小区选择准则,则将第二类覆盖等级确定为UE的覆盖增强等级;其中,目标小区选择准则包括第一类覆盖等级对应的小区选择准则和第二类覆盖等级对应的第一小区选择准则。
也即,第一类覆盖等级配置有第一参数阈值,以及小区选择准则;第二类覆盖等级配置有第二参数阈值和第三参数阈值,以及第一小区选择准则和第二小区选择准则;在小区选择过程中,UE在位置参数小于第一参数阈值且小于第二参数阈值,或UE不满足小区选择准则且不满足第一小区选择准则的情况下,继续确定位置参数是否大于第三参数阈值且UE是否满足第二小区选择准则;若是位置参数大于第三参数阈值且UE满足第二小区选择准则,确认UE处于第二类覆盖等级。
存在一种情况,在第二参数阈值小于第一参数阈值的前提下,UE确定位置参数小于第二参数阈值,或UE不满足小区选择准则和第一小区选择准则,继续确定位置参数是否大于第三参数阈值且UE是否满足第二小区选择准则;若是位置参数大于第三参数阈值且UE满足第二小区选择准则,确认UE处于第二类覆盖等级。
可选地,在位置参数等于第一参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第二参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第三参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
在另一个可选的实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值和第三参数阈值,第三参数阈值小于第一参数阈值和第二参数阈值;在小区选择过程中,UE在位置参数小于第一参数阈值或者UE不满足第一类覆盖等级对应的小区选择准则,且位置参数小于第二参数阈值或者UE不满足第二类覆盖等级对应的第一小区选择准则的情况下,确定位置参数是否大于第三参数阈值且UE是否满足第二小区选择准则;若是位置参数大于第三参数阈值且UE满足第二小区选择准则,确认UE处于第二类覆盖等级。
也即,在第1种情况下,在小区选择过程中,UE在位置参数小于第一参数阈值且位置参数小于第二参数阈值,以及位置参数大于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级;
在第2种情况下,在小区选择过程中,UE在位置参数小于第一参数阈值且UE不满足第二类覆盖等级对应的第一小区选择准则,以及位置参数大于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级;
在第3种情况下,在小区选择过程中,在UE不满足第一类覆盖等级对应的小区选择准则且位置参数小于第二参数阈值,以及位置参数大于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
在第4种情况下,在小区选择过程中,在UE不满足第一类覆盖等级对应的小区选择准则且不满足第二类覆盖等级对应的第一小区选择准则,以及位置参数大于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第1种情况下,在小区选择过程中,UE在位置参数等于第二参数阈值,以及位置参数小于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第1种情况下,在小区选择过程中,UE在位置参数等于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第2种情况下,在小区选择过程中,UE在位置参数等于第一参数阈值且UE不满足第二类覆盖等级对应的第一小区选择准则,以及位置参数大于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第2种情况下,在小区选择过程中,在UE不满足第二类覆盖等级对应的第一小区选择准则,以及位置参数等于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第3种情况下,在小区选择过程中,在UE不满足第一类覆盖等级对应的小区选择准则且位置参数等于第二参数阈值,以及位置参数大于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第3种情况下,在小区选择过程中,在UE不满足第一类覆盖等级对应的小区选择准则,以及位置参数等于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在第4种情况下,在小区选择过程中,在UE不满足第一类覆盖等级对应的小区选择准则且不满足第二类覆盖等级对应的第一小区选择准则,以及位置参数等于第三参数阈值且UE满足第二小区选择准则的情况下,确认UE处于第二类覆盖等级。
示例性的,在上述第三种情形和第四种情形下,位置参数包括:UE至小区服务卫星相对于地面水平 方向的倾角。
需要说明的是,上述UE侧步骤可以实现成为一个单独的实施例,上述网络设备侧步骤可以实现成为另一个单独的实施例。
综上所述,本实施例提供的覆盖增强等级的确定方法,在小区选择过程中采用针对小区选择准则配置的位置参数阈值,基于UE的位置参数明显地区分位于小区中心的UE和位于小区边缘的区域,同时还兼顾了小区选择。
在UE确定覆盖增强等级之前,由网络设备为UE配置相关参数,如图10,示出了本申请一个示例性实施例提供的覆盖增强等级的配置方法的流程图,该方法应用于NTN场景中,由网络设备执行,该方法包括:
步骤801,向UE发送配置信息,配置信息包括为UE配置的用于根据位置参数确定覆盖增强等级所需的参数,位置参数用于反映UE的位置。
网络设备为UE配置用于确定覆盖增强等级的相关参数,包括以下两种情形:
第一,为UE配置在随机接入过程中所需的相关参数;
第二,为UE配置在小区选择过程中所需的相关参数。
在第一种情形下,
网络设备向UE发送配置信息,配置信息包括划分位置参数范围的N个位置参数阈值。
其中,N为大于或者等于1的正整数。可选地,上述配置信息是为小区公共配置的,且配置信息是由系统消息携带配置的。示例性的,上述系统消息包括SIBx,x大于等于1。
示例性的,UE在接入一个小区之后,首先接收该小区的广播消息,该广播消息中携带有上述配置信息。可选地,不同小区的配置信息相同或不同。示例性的,不同小区的覆盖增强等级的配置不同,比如,小区1配置使用CE Level 0、CE Level 1和CE Level 2这三个覆盖增强等级,小区2配置使用CE Level 0、CE Level 1、CE Level 2和CE Level 3这四个覆盖增强等级;不同小区的位置参数阈值的配置不同,比如,小区1配置使用TH11和TH12这两个位置参数阈值,小区2配置使用TH21、TH22和TH23这三个位置参数阈值。
可选地,上述配置信息还包括划分质量参数范围的N个质量参数阈值。
可选地,上述配置信息还用于为UE配置与N+1个覆盖增强等级对应的N+1个随机接入信道资源。
示例性的,上述随机接入信道资源包括以下至少一项:
随机接入信道(Random Access CHannel,RACH)时频资源;
窄带物理随机接入信道(Narrowband Physical Random Access CHannel,NPRACH)重复传输次数;
随机接入响应(Random Access Response,RAR)窗长;
消息3(message3,msg3)重复传输次数,其中,基于竞争的随机接入在媒体接入控制(Medium Access Control,MAC)层有4条信令,包括msg3,msg3用于在上行物理共享信道(Physical Uplink Shared Channel,PUSCH)上对小区无线网络临时标识(Cell-Radio Network Temporary Identifier,C-RNTI)的MAC控制单元(MAC Control Element,MAC CE)或者公共控制信道(Common Control CHannel,CCCH)的服务数据单元(Service Data Unit,SDU)进行定时传输。
可选地,在采用第二距离确定UE的覆盖增强等级的情况下,上述配置信息还包括卫星服务小区中心的至少一个地面参考点位置,每一个地面参考点位置对应一个位置参数阈值。上述第二距离即是UE与卫星服务小区中心地面参考点之间的距离。
在第二种情形下,
网络设备向UE发送广播消息,广播消息包括第一类覆盖等级和第二类覆盖等级的配置信息。
示例性的,第一类覆盖等级包括第0级覆盖增强等级,第二类覆盖等级包括除第0级覆盖增强等级之外的其他覆盖增强等级。需要说明的是,第一类覆盖等级即是normal coverage,第二类覆盖等级即是enhanced coverage。
上述配置信息包括第一类覆盖等级对应的参数阈值和第二类覆盖等级对应的参数阈值。
可选地,上述配置信息还包括第一类覆盖等级和第二类覆盖等级对应的小区选择准则所使用的参数。示例性的,上述小区选择准则包括小区选择S准则。示例性的,小区选择S准则,即是小区搜索中的接收功率Srxlev>0分贝(dB)且小区搜索中接收的信号质量Squal>0dB。
综上所述,本实施例提供的覆盖增强等级的配置方法,在NTN通信的情况下,由网络设备为UE配置用于确定覆盖增强等级的相关参数,以使UE可以基于位置参数确定覆盖增强等级,保证了UE的随机接入性能,可以基于UE的位置参数明显地区分位于小区中心的UE和位于小区边缘的区域,从而能够为小区中心的UE选择较低的覆盖增强等级,使用较小的重复传输次数以降低接入网络的时延;以及为小区边 缘的UE选择较高的覆盖增强等级,使用较大的重复传输次数以提高随机接入成功率。
示例性的,对随机接入过程中UE的覆盖增强等级选择实现进行举例说明,如下所示。
第一种实现方式:
在随机接入初始化阶段,UE基于UE与小区服务卫星之间的第一距离,或者UE与小区服务卫星之间的RTT,或者第一距离和RSRP,或者RTT和RSRP进行覆盖增强等级的选择。
该方式可以分为以下两个步骤:
步骤1,UE接收网络设备发送的配置信息,配置信息包括随机接入信道(Random Access CHannel,RACH)的相关参数:
a)用于UE覆盖增强等级选择的N个RSRP阈值:RSRP_th j,0<j<N,j越大,对应的RSRP_th j越小;
b)用于UE覆盖增强等级选择的N个RTT阈值RTT_th j,0<j<N,j越大,对应的RTT_th j越大;或者,用于UE覆盖增强等级选择的N个距离阈值d_th j,0<j<N,j越大,对应的d_th j越大;
c)分别与N+1个覆盖增强等级关联的N+1套RACH资源,RACH资源包括:RACH时频资源;NPRACH重复传输次数;RAR窗长;msg3重复传输次数;
其中,该配置信息是为小区公共配置的,该配置信息在系统消息中携带,比如,SIBx,x大于或者等于1。
步骤2,对于触发了随机接入的UE:
a)若本次随机接入为PDCCH order触发的,且PDCCH order指示了起始覆盖增强等级,或者网络设备指示了起始NPRACH重复传输次数,或者高层配置了起始覆盖增强等级,则UE确认自身位于起始覆盖增强等级,或者起始NPRACH重复传输次数对应的覆盖增强等级。
b)在不满足a)中所述情形的情况下,UE按照以下方式进行随机接入过程中覆盖增强等级的选择:
方法1,UE基于第一距离或者RTT选择覆盖增强等级;
以RTT为例,如图11所示,UE基于定位能力获取UE的第一位置,基于星历信息获取小区服务卫星的第二位置,根据第一位置和第二位置计算UE与小区服务卫星之间的RTT,记为测量RTT(也即measured RTT);其中,星历信息是用于描述太空飞行体位置和速度的表达式;
在测量RTT大于RTT_th N的情况下,则确认UE位于覆盖增强等级N;
在测量RTT大于RTT_th N-1且小于或者等于RTT_th N的情况下,则确认UE位于覆盖增强等级N-1;
……;
在测量RTT大于RTT_th 1且小于或者等于RTT_th 2的情况下,则确认UE位于覆盖增强等级1;
在测量RTT小于或者等于RTT_th 1的情况下,确认UE位于覆盖增强等级0。
方法2,UE基于第一距离和RSRP,或者RTT和RSRP选择覆盖增强等级;
以RTT为例,
在测量RTT大于RTT_th N,或测量RSRP(measured RSRP)小于RSRP_th N的情况下,则确认UE位于覆盖增强等级N;
若不满足覆盖增强等级N的条件,在测量RTT大于RTT_th N-1,或测量RSRP小于RSRP_th N-1的情况下,则确认UE位于覆盖增强等级N-1;
……;
若不满足覆盖增强等级2至覆盖增强等级N的条件,在测量RTT大于RTT_th 1,或测量RSRP小于RSRP_th 1的情况下,则确认UE位于覆盖增强等级1;
若不满足覆盖增强等级1至覆盖增强等级N的条件,在测量RTT小于或者等于RTT_th 1,且测量RSRP大于或者等于RSRP_th 1的情况下,确认UE位于覆盖增强等级0。
第二种实现方式:
在随机接入初始化阶段,UE基于第二距离,或者第二距离和RSRP进行覆盖增强等级的选择。
该方式可以分为以下两个步骤:
步骤1,UE接收网络设备发送的配置信息,配置信息包括RACH的相关参数:
a)用于UE覆盖增强等级选择的N个RSRP阈值:RSRP_th j,0<j<N,j越大,对应的RSRP_th j越小;
b)用于UE覆盖增强等级选择的N个距离阈值d_th j,0<j<N,j越大,对应的d_th j越大,同时指示至少一个地面参考点位置;
c)分别与N+1个覆盖增强等级关联的N+1套RACH资源,RACH资源包括以下至少一项:RACH时频资源;NPRACH重复传输次数;RAR窗长;msg3重复传输次数;
其中,该配置信息是为小区公共配置的,该配置信息在系统消息中携带,比如,SIBx,x大于或者等于1。
步骤2,对于触发了随机接入的UE:
a)若本次随机接入为PDCCH order触发的,且PDCCH order指示了起始覆盖增强等级,或者网络设备指示了起始NPRACH重复传输次数,或者高层配置了起始覆盖增强等级,则UE确认自身位于起始覆盖增强等级,或者起始NPRACH重复传输次数对应的覆盖增强等级。
b)在不满足a)所述形象的情况下,UE按照以下方式进行随机接入过程中覆盖增强等级的选择:
方法1,如图12所示,UE基于第二距离选择覆盖增强等级;
UE基于定位能力获取UE的第二位置,根据第二位置和配置的小区中心地面参考点之间的距离,记为测量d(measured d);
在测量d大于d_th N的情况下,则确认UE位于覆盖增强等级N;
在测量d大于d_th N-1且小于或者等于d_th N的情况下,则确认UE位于覆盖增强等级N-1;
……;
在测量d大于d_th 1且小于或者等于d_th 2的情况下,则确认UE位于覆盖增强等级1;
在测量d小于或者d_th 1的情况下,确认UE位于覆盖增强等级0。
方法2,UE基于第二距离和RSRP选择覆盖增强等级;
在测量d大于d_th N,或测量d(measured RSRP)小于RSRP_th N的情况下,则确认UE位于覆盖增强等级N;
若不满足覆盖增强等级N的条件,在测量d大于d_th N-1,或测量RSRP小于RSRP_th N-1的情况下,则确认UE位于覆盖增强等级N-1;
……;
若不满足覆盖增强等级2至覆盖增强等级N的条件,在测量d大于d_th 1,或测量RSRP小于RSRP_th1,则确认UE位于覆盖增强等级1;
若不满足覆盖增强等级1至覆盖增强等级N的条件,在测量d小于或者等于d_th 1,且测量RSRP大于或者等于RSRP_th 1的情况下,则确认UE位于覆盖增强等级0。
第三种实现方式:
在随机接入初始化阶段,UE基于UE到卫星相对于地面水平方向的倾角,或者,基于上述倾角和RSRP进行覆盖增强等级的选择。
该方式可以分为以下两个步骤:
步骤1,UE接收网络设备发送的配置信息,配置信息包括RACH的相关参数:
a)用于UE覆盖增强等级选择的N个RSRP阈值:RSRP_th j,0<j≤N,j越大,对应的RSRP_th j越小;
b)用于UE覆盖增强等级选择的N个倾角阈值:angle_th j,0<j≤N,j越大,对应的angle_th j越小;
c)分别与N+1个覆盖增强等级关联的N+1套RACH资源,RACH资源包括:RACH时频资源;NPRACH重复传输次数;RAR窗长;msg3重复传输次数;
其中,该配置信息是为小区公共配置的,该配置信息在系统消息中携带,比如,SIBx,x大于或者等于1。
步骤2,对于触发了随机接入的UE:
a)若本次随机接入为PDCCH order触发的,且PDCCH order指示了起始覆盖增强等级,或者网络设备指示了起始NPRACH重复传输次数,或者高层配置了起始覆盖增强等级,则UE确认自身位于起始覆盖增强等级,或者起始NPRACH重复传输次数对应的覆盖增强等级。
b)在不满足a)所述情形的情况下,UE按照以下方式进行随机接入过程中覆盖增强等级的选择:
方法1,如图13所示,UE基于UE与卫星的仰角选择覆盖增强等级;
UE基于定位能力获取UE的第一位置,基于星历信息获取小区服务卫星的第二位置,并根据第一位置和第二位置计算UE到卫星的仰角,记为测量倾角(measured angle);
在测量倾角小于angle_th N的情况下,则确认UE位于覆盖增强等级N;
在测量倾角小于angle_th N-1且大于或者等于angle_th N的情况下,则确认UE位于覆盖增强等级N-1;
……;
在测量倾角小于angle_th 1且大于或者等于angle_th 2的情况下,则确认UE位于覆盖增强等级1;
在测量倾角大于或者等于angle_th 1的情况下,则确认UE位于覆盖增强等级0。
方法2,UE基于UE到卫星的仰角和RSRP选择覆盖增强等级;
在测量倾角小于angle_th N,或者测量RSRP小于RSRP_th N,则确认UE位于覆盖增强等级N;
若不满足覆盖增强等级N的条件,在测量倾角小于angle_th N-1,或测量RSRP小于RSRP_th N-1的情况下,则确认UE位于覆盖增强等级N-1;
……;
若不满足覆盖增强等级2至覆盖增强等级N的条件,在测量倾角小于angle_th 1,或测量RSRP小于RSRP_th 1的情况下,则确认UE位于覆盖增强等级1;
若不满足覆盖增强等级1至覆盖增强等级N的条件,在测量倾角大于或者等于angle_th 1,且测量RSRP大于或者等于RSRP_th 1的情况下,则确认UE位于覆盖增强等级0。
第四种实现方式:
在小区选择过程中,对于处于RRC的IDLE态的UE,UE基于自身位置参数,或者,基于位置参数和RSRP进行覆盖增强等级的选择。
该方式可以分为以下两个步骤:
步骤1,UE读取小区的广播消息,获取小区选择的相关信息,相关消息包括以下至少一项:
a)normal coverage对应的1套S准则相关参数和enhanced coverage对应的至少一套S准则相关参数;
b)用于UE进行覆盖增强等级选择的、与UE的位置和小区服务卫星的位置(或者小区中心地面参考点)相关的至少两个第一阈值,第一阈值对应的位置参数可以包括以下至少一种:
UE与小区服务卫星之间的第一距离;
UE与地面网络之间的第二距离;
UE与小区服务卫星之间的无线信号传输时延或者第一RTT;
UE与地面网络之间的第二RTT;
UE与小区服务卫星之间相对于地面水平方向的仰角;
UE与小区中心地面参考点之间的第三距离;
其中,上述第一阈值的个数与a)中配置的小区选择S准则个数相等,例如,如果针对enhanced coverage配置了2套小区选择S准则参数,加上normal coverage配置的1套小区选择S准则,则第一阈值的个数为3;如果针对enhanced coverage配置了1套小区选择S准则参数,加上normal coverage配置的1套小区选择S准则,则第一阈值的个数为2。
步骤2,UE进行小区选择的方法如下:
方法1,UE基于位置参数执行小区选择并确定覆盖增强等级;
其中,位置参数可以是:
UE与小区服务卫星之间的第一距离;
UE与地面网络之间的第二距离;
UE与小区服务卫星之间无线信号传输时延或者RTT;
UE与地面网络之间的第二往返时延;
UE到小区服务卫星相对于地面水平方向的仰角;
UE与小区中心地面参考点的第三距离;
以RRT为例,UE基于定位能力获取自身的第一位置,基于星历信息获取小区服务卫星的第二位置,并根据第一位置和第二位置计算UE与小区服务卫星之间的RTT,记为测量RTT;
在测量RTT小于或等于normal coverage对应的RTT阈值的情况下:
若UE不能获取SIB1但能获取MIB,SIB1-BR和SIB2,则确认UE位于enhanced coverage;
若UE能获取SIB1,则确认UE位于normal coverage。
在测量RTT大于normal coverage对应的RTT阈值,且测量RTT小于或者等于enhanced coverage对应的RTT阈值1的情况下,则确认UE位于enhanced coverage;
在测量RTT大于normal coverage对应的RTT阈值,且测量RTT大于enhanced coverage对应的RTT阈值1的情况下:
若测量RTT小于或者等于enhanced coverage对应的RTT阈值2,则确认UE位于enhanced coverage。
方法2,UE基于位置参数和小区选择S准则执行小区选择并确定覆盖增强等级;
其中,位置参数可以是:
UE与小区服务卫星之间的第一距离;
UE与地面网络之间的第二距离;
UE与小区服务卫星之间无线信号传输时延或者第一RTT;
UE与地面网络之间的第二RTT;
UE与小区服务卫星相对于地面水平方向的仰角;
UE与小区中心地面参考点的第二距离;
以RRT为例,UE基于定位能力获取自身的第一位置,基于星历信息获取小区服务卫星的第二位置,并根据第一位置和第二位置计算UE与小区服务卫星之间的RTT,记为测量RTT;
在测量RTT小于或等于normal coverage对应的RTT阈值,同时UE满足normal coverage对应的小区选择S准则的情况下:
若UE不能获取SIB 1,能获得MIB、SIB 1-BR和SIB 2,则确认UE位于enhanced coverage;
若UE能获取SIB 1,则确认UE位于normal coverage。
若UE不满足上述normal coverage的条件,若测量RTT小于或等于enhanced coverage对应的RTT阈值1,且UE满足enhanced coverage对应的小区选择S准则1的情况下,则确认UE位于enhanced coverage;
在测量RTT大于normal coverage对应的RTT阈值或者UE不满足normal coverage对应的小区选择S准则,且测量RTT大于enhanced coverage对应的RTT阈值1或者UE不满足normal coverage对应的小区选择S准则1的情况下:
若测量RTT小于或等于enhanced coverage对应的RTT阈值2且UE满足enhanced coverage对应的小区选择S准则2,则确认UE位于enhanced coverage。
综上所述,本实施例提供的覆盖增强等级的确定方法,在NTN通信的情况下,基于UE的位置参数确定覆盖增强等级,保证了UE的随机接入性能,可以基于UE的位置参数明显地区分位于小区中心的UE和位于小区边缘的区域,从而能够为小区中心的UE选择较低的覆盖增强等级,使用较小的重复传输次数以降低接入网络的时延;以及为小区边缘的UE选择较高的覆盖增强等级,使用较大的重复传输次数以提高随机接入成功率。
还需要说明的是,上述位置参数等于位置参数阈值的情况,可以定义在位置参数范围两端的任意一端位置参数阈值上,本申请中不加以限定,上述实施例中仅以一侧进行说明。同理,上述下行信号质量等于质量参数阈值的情况,也可以定义在质量参数范围两端的任意一端质量参数阈值上,本申请中不加以限定。
图14示出了本申请一个示例性实施例提供的覆盖增强等级的确定装置的框图,该装置可以通过软件、硬件或者二者的结合实现成为UE的一部分或者全部,该装置包括:
第一处理模块901,用于基于UE的位置参数确定覆盖增强等级;其中,位置参数用于反映UE的位置。
在一些实施例中,第一处理模块901,用于在随机接入过程中,基于UE的位置参数所属的位置参数范围,确定UE的覆盖增强等级。
在一些实施例中,第一处理模块901,用于:
响应于位置参数大于第N个位置参数阈值,将第N级覆盖增强等级确定为UE的覆盖增强等级;
响应于位置参数大于第N-i个位置参数阈值且小于或等于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为UE的覆盖增强等级;
响应于位置参数小于或等于第1个位置参数阈值,将第0级覆盖增强等级确定为UE的覆盖增强等级;
其中,第N-i个位置参数阈值小于第N-i+1个位置参数阈值,N为大于或者等于1的正整数,i为小于N的正整数。
在一些实施例中,第一处理模块901,用于:
响应于位置参数大于或等于第N个位置参数阈值,将第N级覆盖增强等级确定为UE的覆盖增强等级;
响应于位置参数大于或等于第N-i个位置参数阈值且小于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为UE的覆盖增强等级;
响应于位置参数小于第1个位置参数阈值,将第0级覆盖增强等级确定为UE的覆盖增强等级;
其中,第N-i个位置参数阈值小于第N-i+1个位置参数阈值,N为大于或者等于1的正整数,i为小于N的正整数。
在一些实施例中,位置参数包括以下至少一项:
UE与小区服务卫星之间的第一距离,UE位于小区服务卫星的服务范围内;
UE与地面网络之间的第二距离;
UE与卫星服务小区中心地面参考点之间的第三距离;
UE与小区服务卫星之间的第一往返时延;
UE与地面网络之间的第二往返时延。
在一些实施例中,第一处理模块901,用于:
响应于位置参数小于第N个位置参数阈值,将第N级覆盖增强等级确定为UE的覆盖增强等级;
响应于位置参数小于第N-i个位置参数阈值且大于或等于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为UE的覆盖增强等级;
响应于位置参数大于或等于第1个位置参数阈值,将第0级覆盖增强等级确定为UE的覆盖增强等级;
其中,第N-i个位置参数阈值大于第N-i+1个位置参数阈值,N为大于或者等于1的正整数,i为小于N的正整数。
在一些实施例中,第一处理模块901,用于:
响应于位置参数小于或等于第N个位置参数阈值,将第N级覆盖增强等级确定为UE的覆盖增强等级;
响应于位置参数小于或等于第N-i个位置参数阈值且大于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为UE的覆盖增强等级;
响应于位置参数大于第1个位置参数阈值,将第0级覆盖增强等级确定为UE的覆盖增强等级;
其中,第N-i个位置参数阈值大于第N-i+1个位置参数阈值,N为大于或者等于1的正整数,i为小于N的正整数。
在一些实施例中,位置参数包括:
UE至小区服务卫星相对于地面水平方向的倾角,UE位于小区服务卫星的服务范围内。
在一些实施例中,第一处理模块901,用于:
在满足位置参数属于第N+1个位置参数范围,以及UE的下行信号质量属于第N+1个质量参数范围中至少一项的情况下,将第N级覆盖增强等级作为UE的覆盖增强等级;
在位置参数不属于第N-i+2个位置参数范围到第N+1个位置参数范围中的任何一个且下行信号质量不属于第N-i+2个质量参数范围到第N+1个质量参数范围中的任何一个的情况下,若满足位置参数属于第N-i+1个位置参数范围、以及下行信号质量属于第N-i+1个质量参数范围中的至少一项,将第N-i级覆盖增强等级作为UE的覆盖增强等级;
在位置参数不属于第2个位置参数范围到第N+1个位置参数范围中的任何一个且下行信号质量不属于第2个质量参数范围到第N+1个质量参数范围中的任何一个的情况下,若满足位置参数属于第1个位置参数范围、且下行信号质量属于第1个质量参数范围,将第0级覆盖增强等级作为UE的覆盖增强等级;N为大于或者等于1的正整数,i为小于N的正整数。
在一些实施例中,
第N+1个位置参数范围是指大于或等于第N个位置参数阈值的参数范围,第N-i+1个位置参数范围是指大于或等于第N-i个位置参数阈值且小于第N-i+1个位置参数阈值的参数范围,第1个位置参数范围是指小于第1个位置参数阈值的参数范围;
第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于或等于第N-i+1个质量参数阈值的参数范围,第1个质量参数范围是指大于或等于第1个质量参数阈值的参数范围。
在一些实施例中,
第N+1个位置参数范围是指大于第N个位置参数阈值的参数范围,第N-i+1个位置参数范围是指大于第N-i个位置参数阈值且小于或等于第N-i+1个位置参数阈值的参数范围,第1个位置参数范围是指小于或等于第1个位置参数阈值的参数范围;
第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于或等于第N-i+1个质量参数阈值的参数范围,第1个质量参数范围是指大于或等于第1个质量参数阈值的参数范围。
在一些实施例中,位置参数包括以下至少一项:
UE与小区服务卫星之间的第一距离,UE位于小区服务卫星的服务范围内;
UE与地面网络之间的第二距离;
UE与卫星服务小区中心地面参考点之间的第三距离;
UE与小区服务卫星之间的第一往返时延;
UE与地面网络之间的第二往返时延。
在一些实施例中,
第N+1个位置参数范围是指小于或等于第N个位置参数阈值的参数范围,第N-i+1个位置参数范围是指小于或等于第N-i个位置参数阈值且大于第N-i+1个位置参数阈值的参数范围,第1个位置参数范围是指大于第1个位置参数阈值的参数范围;
第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于或等于第N-i+1个质量参数阈值的参数范围,第1个质量参数范围是指大于或等于第1个质量参数阈值的参数范围。
在一些实施例中,
第N+1个位置参数范围是指小于第N个位置参数阈值的参数范围,第N-i+1个位置参数范围是指小 于第N-i个位置参数阈值且大于或等于第N-i+1个位置参数阈值的参数范围,第1个位置参数范围是指大于或等于第1个位置参数阈值的参数范围;
第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于或等于第N-i+1个质量参数阈值的参数范围,第1个质量参数范围是指大于或等于第1个质量参数阈值的参数范围。
在一些实施例中,位置参数包括:
UE至小区服务卫星相对于地面水平方向的倾角,UE位于小区服务卫星的服务范围内。
在一些实施例中,下行信号质量包括以下至少一项:
参考信号接收功率;
参考信号接收质量;
信干噪比。
在一些实施例中,装置还包括:第一接收模块902;
第一接收模块902,用于接收网络设备发送的配置信息,配置信息包括划分位置参数范围的N个位置参数阈值,N为大于或者等于1的正整数。
在一些实施例中,配置信息是为小区公共配置的,且配置信息是由系统消息携带配置的。
在一些实施例中,配置信息还用于为UE配置与N+1个覆盖增强等级对应的N+1个随机接入信道资源。
在一些实施例中,随机接入信道资源包括以下至少一项:
随机接入信道时频资源;
窄带物理随机接入信道重复传输次数;
随机接入响应窗长;
消息3重复传输次数。
在一些实施例中,第一处理模块901,用于:
响应于物理下行控制信道命令触发随机接入过程、且物理下行控制信道命令指示了起始覆盖增强等级,将起始覆盖增强等级确定为UE的覆盖增强等级;或者,
响应于物理下行控制信道命令触发随机接入过程、且网络设备指示了起始窄带物理随机接入信道重复传输次数,将起始窄带物理随机接入信道重复传输次数对应的覆盖增强等级确定为UE的覆盖增强等级;或者,
响应于物理下行控制信道命令触发随机接入过程、且高层配置了起始覆盖增强等级,将起始覆盖增强等级确定为UE的覆盖增强等级。
在一些实施例中,第一处理模块901,用于在小区选择过程中,基于UE的位置参数确定UE的覆盖增强等级为第一类覆盖等级或者第二类覆盖等级。
在一些实施例中,第一类覆盖等级包括第0级覆盖增强等级;
第二类覆盖等级包括除第0级覆盖增强等级之外的其他覆盖增强等级。
在一些实施例中,第一类覆盖等级对应第一参数阈值;第一处理模块901,用于:
在位置参数小于第一参数阈值的情况下,若UE仅能够获取第一类信息块,确定UE的覆盖增强等级为第二类覆盖等级;
若UE能够获取第二类信息块,确定UE的覆盖增强等级为第一类覆盖等级。
可选地,在位置参数等于第一参数阈值的情况下,确定UE的覆盖增强等级为第一类覆盖等级,或者,在位置参数等于第一参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
在一些实施例中,
第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
第二类信息块包括系统信息块1。
在一些实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值,第一参数阈值小于第二参数阈值;第一处理模块901,用于:
在位置参数大于第一参数阈值且小于第二参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第一参数阈值时,确定UE的覆盖增强等级为第一类覆盖等级,或者在位置参数等于第一参数阈值时,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第二参数阈值时,确定UE的覆盖增强等级为第二类覆盖等级。
在一些实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值和第三参数阈值,第三参数阈值大于第一参数阈值和第二参数阈值;第一处理模块901,用于:
在位置参数大于第一参数阈值和第二参数阈值,且位置参数小于第三参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第二参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第三参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
在一些实施例中,第一类覆盖等级对应第一参数阈值;第一处理模块901,用于:
在位置参数小于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,若UE仅能够获取第一类信息块,确定UE的覆盖增强等级为第二类覆盖等级;若UE能够获取第二类信息块,确定UE的覆盖增强等级为第一类覆盖等级。
可选地,在位置参数等于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,确认UE处于第一类覆盖等级,或者在位置参数等于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,确认UE处于第二类覆盖等级。
在一些实施例中,
第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
第二类信息块包括系统信息块1。
在一些实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值,第一参数阈值小于第二参数阈值;第一处理模块901,用于:
在位置参数大于第一参数阈值或者UE不满足第一类覆盖增强等级对应的小区选择准则的情况下,若位置参数小于第二参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第一参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确定UE处于第一类覆盖等级;或者在位置参数等于第一参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在位置参数等于第二参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确认UE处于第二类覆盖等级。
在一些实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值和第三参数阈值,第三参数阈值大于第一参数阈值和第二参数阈值;第一处理模块901,用于:
在位置参数大于第一参数阈值和第二参数阈值,或UE不满足目标小区选择准则的情况下,若位置参数小于第三参数阈值,且UE满足第二覆盖等级对应的第二小区选择准则,将第二类覆盖等级确定为UE的覆盖增强等级;
其中,目标小区选择准则包括第一类覆盖等级对应的小区选择准则和第二类覆盖等级对应的第一小区选择准则。
可选地,在位置参数等于第一参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第二参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第三参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
在一些实施例中,位置参数包括以下至少一项:
UE与小区服务卫星之间的第一距离,UE位于小区服务卫星的服务范围内;
UE与地面网络之间的第二距离;
UE与卫星服务小区中心地面参考点之间的第三距离;
UE与小区服务卫星之间的第一往返时延;
UE与地面网络之间的第二往返时延。
在一些实施例中,第一类覆盖等级对应第一参数阈值;第一处理模块901,用于:
在位置参数大于第一参数阈值的情况下,若UE仅能够获取第一类信息块,确定UE的覆盖增强等级为第二类覆盖等级;
若UE能够获取第二类信息块,确定UE的覆盖增强等级为第一类覆盖等级。
可选地,在位置参数等于第一参数阈值的情况下,确定UE的覆盖增强等级为第一类覆盖等级,或者,在位置参数等于第一参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
在一些实施例中,
第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
第二类信息块包括系统信息块1。
在一些实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值,第一参数阈值大于第二参数阈值;第一处理模块901,用于:
在位置参数小于第一参数阈值且大于第二参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第一参数阈值时,确定UE的覆盖增强等级为第一类覆盖等级,或者在位置参数等于第一参数阈值时,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第二参数阈值时,确定UE的覆盖增强等级为第二类覆盖等级。
在一些实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值和第三参数阈值,第三参数阈值小于第一参数阈值和第二参数阈值;第一处理模块901,用于:
在位置参数小于第一参数阈值和第二参数阈值,且位置参数大于第三参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第二参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第三参数阈值的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
在一些实施例中,第一类覆盖等级对应第一参数阈值;第一处理模块901,用于:
在位置参数大于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,若UE仅能够获取第一类信息块,确定UE的覆盖增强等级为第二类覆盖等级;
若UE能够获取第二类信息块,确定UE的覆盖增强等级为第一类覆盖等级。
可选地,在位置参数等于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,确认UE处于第一类覆盖等级,或者在位置参数等于第一参数阈值,且UE满足第一类覆盖等级对应的小区选择准则的情况下,确认UE处于第二类覆盖等级。
在一些实施例中,
第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
第二类信息块包括系统信息块1。
在一些实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值,第一参数阈值大于第二参数阈值;第一处理模块901,用于:
在位置参数小于第一参数阈值或者UE不满足第一类覆盖增强等级对应的小区选择准则的情况下,若位置参数大于第二参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第一参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确定UE处于第一类覆盖等级;或者在位置参数等于第一参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确认UE处于第二类覆盖等级。
可选地,在位置参数等于第二参数阈值,且UE满足第二类覆盖等级对应的第一小区选择准则的情况下,确认UE处于第二类覆盖等级。
在一些实施例中,第一类覆盖等级对应第一参数阈值,第二类覆盖等级对应第二参数阈值和第三参数阈值,第三参数阈值小于第一参数阈值和第二参数阈值;第一处理模块901,用于:
在位置参数小于第一参数阈值和第二参数阈值,或UE不满足目标小区选择准则的情况下,若位置参数大于第三参数阈值,且UE满足第二覆盖等级对应的第二小区选择准则,将第二类覆盖等级确定为UE的覆盖增强等级;
其中,目标小区选择准则包括第一类覆盖等级对应的小区选择准则和第二类覆盖等级对应的第一小区选择准则。
可选地,在位置参数等于第一参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第二参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
可选地,在位置参数等于第三参数阈值,以及UE不满足目标小区选择准则且满足第二类覆盖等级对应的第二小区选择准则的情况下,确定UE的覆盖增强等级为第二类覆盖等级。
在一些实施例中,位置参数包括:
UE至小区服务卫星相对于地面水平方向的倾角,UE位于小区服务卫星的服务范围内。
在一些实施例中,该装置包括第一接收模块902;
第一接收模块902,用于接收网络设备发送的广播消息,广播消息包括第一类覆盖等级和第二类覆盖等级的配置信息。
在一些实施例中,配置信息包括第一类覆盖等级和第二类覆盖等级对应的参数阈值。
在一些实施例中,配置信息包括第一类覆盖等级和第二类覆盖等级对应的小区选择准则所使用的参数。
综上所述,本实施例提供的覆盖增强等级的确定装置,基于UE的位置参数确定覆盖增强等级,保证了UE的随机接入性能,可以基于UE的位置参数明显地区分位于小区中心的UE和位于小区边缘的区域,从而能够为小区中心的UE选择较低的覆盖增强等级,使用较小的重复传输次数以降低接入网络的时延;以及为小区边缘的UE选择较高的覆盖增强等级,使用较大的重复传输次数以提高随机接入成功率。
图15示出了本申请一个示例性实施例提供的覆盖增强等级的配置装置的框图,该装置可以通过软件、硬件或者二者的结合实现成为网络设备的一部分或者全部,该装置包括:
第二发送模块1001,用于向UE发送配置信息,配置信息包括为UE配置的用于根据位置参数确定覆盖增强等级所需的参数,位置参数用于反映UE的位置。
在一些实施例中,配置信息包括划分位置参数范围的N个位置参数阈值,N为大于或者等于1的正整数。
在一些实施例中,配置信息包括与N+1个覆盖增强等级对应的N+1个随机接入信道资源。
在一些实施例中,随机接入信道资源包括以下至少一项:
随机接入信道时频资源;
窄带物理随机接入信道重复传输次数;
随机接入响应窗长;
消息3重复传输次数。
在一些实施例中,
第二发送模块1001,还用于向UE发送物理下行控制信道命令,物理下行控制信道命令携带有UE的覆盖增强等级。
在一些实施例中,配置信息是为小区公共配置的,且配置信息是由系统消息携带配置的。
在一些实施例中,配置信息包括第一类覆盖等级和第二类覆盖等级对应的参数阈值。
在一些实施例中,配置信息包括第一类覆盖等级和第二类覆盖等级对应的小区选择准则所使用的参数。
综上所述,本实施例提供的覆盖增强等级的配置装置,基于UE的位置参数确定覆盖增强等级,保证了UE的随机接入性能,可以基于UE的位置参数明显地区分位于小区中心的UE和位于小区边缘的区域,从而能够为小区中心的UE选择较低的覆盖增强等级,使用较小的重复传输次数以降低接入网络的时延;以及为小区边缘的UE选择较高的覆盖增强等级,使用较大的重复传输次数以提高随机接入成功率。
图16示出了本申请一个示例性实施例提供的UE的结构示意图,该UE包括:处理器111、接收器112、发射器113、存储器114和总线115。
处理器111包括一个或者一个以上处理核心,处理器111通过运行软件程序以及模块,从而执行各种功能应用以及信息处理。
接收器112和发射器113可以实现为一个通信组件,该通信组件可以是一块通信芯片。
存储器114通过总线115与处理器111相连。
存储器114可用于存储至少一个指令,处理器111用于执行该至少一个指令,以实现上述方法实施例中的各个步骤。
此外,存储器114可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,易失性或非易失性存储设备包括但不限于:磁盘或光盘,电可擦除可编程只读存储器(EEPROM,Electrically Erasable Programmable Read Only Memory),可擦除可编程只读存储器(EPROM,Erasable Programmable Read Only Memory),静态随时存取存储器(SRAM,Static Random-Access Memory),只读存储器(ROM,Read Only Memory),磁存储器,快闪存储器,可编程只读存储器(PROM,Programmable Read Only Memory)。
在示例性实施例中,还提供了一种包括指令的非临时性计算机可读存储介质,例如包括指令的存储器,上述指令可由UE的处理器执行以完成上述覆盖增强等级的确定方法。例如,所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM,Random-Access Memory)、紧凑型光盘只读存储器(CD-ROM,Compact Disc Read Only Memory)、磁带、软盘和光数据存储设备等。
一种非临时性计算机可读存储介质,当所述非临时性计算机存储介质中的指令由UE的处理器执行时,使得UE能够执行上述覆盖增强等级的确定方法。
本申请一示例性实施例还提供了一种网络设备,所述网络设备包括:处理器;与所述处理器相连的收发器;其中,所述处理器被配置为加载并执行可执行指令以实现上述各个方法实施例提供的覆盖增强等级的配置方法。
本申请一示例性实施例还提供了一种计算机可读存储介质,所述计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集,所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现上述各个方法实施例提供的覆盖增强等级的确定方法,或者,覆盖增强等级的配置方法。
应当理解的是,在本文中提及的“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本领域技术人员在考虑说明书及实践这里公开的发明后,将容易想到本申请的其它实施方案。本申请旨在涵盖本申请的任何变型、用途或者适应性变化,这些变型、用途或者适应性变化遵循本申请的一般性原理并包括本申请未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的,本申请的真正范围和精神由下面的权利要求指出。
应当理解的是,本申请并不局限于上面已经描述并在附图中示出的精确结构,并且可以在不脱离其范围进行各种修改和改变。本申请的范围仅由所附的权利要求来限制。

Claims (99)

  1. 一种覆盖增强等级的确定方法,其特征在于,所述方法由终端执行,所述方法包括:
    基于所述终端的位置参数确定覆盖增强等级;其中,所述位置参数用于反映所述终端的位置。
  2. 根据权利要求1所述的方法,其特征在于,所述基于所述终端的位置参数确定覆盖增强等级,包括:
    在随机接入过程中,基于所述终端的位置参数所属的位置参数范围,确定所述终端的覆盖增强等级。
  3. 根据权利要求2所述的方法,其特征在于,所述基于所述终端的位置参数所属的位置参数范围,确定所述终端的覆盖增强等级,包括:
    响应于所述位置参数大于第N个位置参数阈值,将第N级覆盖增强等级确定为所述终端的覆盖增强等级;
    响应于所述位置参数大于第N-i个位置参数阈值且小于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为所述终端的覆盖增强等级;
    响应于所述位置参数小于第1个位置参数阈值,将第0级覆盖增强等级确定为所述终端的覆盖增强等级;
    其中,所述第N-i个位置参数阈值小于第N-i+1个位置参数阈值,N为大于或者等于1的正整数,i为小于N的正整数。
  4. 根据权利要求3所述的方法,其特征在于,所述位置参数包括以下至少一项:
    所述终端与小区服务卫星之间的第一距离,所述终端位于所述小区服务卫星的服务范围内;
    所述终端与地面网络之间的第二距离;
    所述终端与卫星服务小区中心地面参考点之间的第三距离;
    所述终端与所述小区服务卫星之间的第一往返时延;
    所述终端与所述地面网络之间的第二往返时延。
  5. 根据权利要求2所述的方法,其特征在于,所述基于所述终端的位置参数所属的位置参数范围,确定所述终端的覆盖增强等级,包括:
    响应于所述位置参数小于第N个位置参数阈值,将第N级覆盖增强等级确定为所述终端的覆盖增强等级;
    响应于所述位置参数小于第N-i个位置参数阈值且大于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为所述终端的覆盖增强等级;
    响应于所述位置参数大于第1个位置参数阈值,将第0级覆盖增强等级确定为所述终端的覆盖增强等级;
    其中,所述第N-i个位置参数阈值大于第N-i+1个位置参数阈值,N为大于或者等于1的正整数,i为小于N的正整数。
  6. 根据权利要求5所述的方法,其特征在于,所述位置参数包括:
    所述终端至小区服务卫星相对于地面水平方向的倾角,所述终端位于所述小区服务卫星的服务范围内。
  7. 根据权利要求2所述的方法,其特征在于,所述基于所述终端的位置参数所属的位置参数范围,确定所述终端的覆盖增强等级,包括:
    在满足所述位置参数属于第N+1个位置参数范围,以及所述终端的下行信号质量属于第N+1个质量参数范围中至少一项的情况下,将第N级覆盖增强等级作为所述终端的覆盖增强等级;
    在所述位置参数不属于第N-i+2个位置参数范围到第N+1个位置参数范围中的任何一个且所述下行信号质量不属于第N-i+2个质量参数范围到第N+1个质量参数范围中的任何一个的情况下,若满足所述位置参数属于第N-i+1个位置参数范围、以及所述下行信号质量属于第N-i+1个质量参数范围中的至少一项,将第N-i级覆盖增强等级作为所述终端的覆盖增强等级;
    在所述位置参数不属于第2个位置参数范围到第N+1个位置参数范围中的任何一个且所述下行信号质量不属于第2个质量参数范围到第N+1个质量参数范围中的任何一个的情况下,若满足所述位置参数属于第1个位置参数范围、且所述下行信号质量属于第1个质量参数范围,将第0级覆盖增强等级作为所述终端的覆盖增强等级;N为大于或者等于1的正整数,i为小于N的正整数。
  8. 根据权利要求7所述的方法,其特征在于,
    所述第N+1个位置参数范围是指大于第N个位置参数阈值的参数范围,所述第N-i+1个位置参数范围是指大于第N-i个位置参数阈值且小于第N-i+1个位置参数阈值的参数范围,所述第1个位置参数范围是指小于第1个位置参数阈值的参数范围;
    所述第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,所述第N-i+1个质量参数范 围是指小于第N-i个质量参数阈值且大于第N-i+1个质量参数阈值的参数范围,所述第1个质量参数范围是指大于第1个质量参数阈值的参数范围。
  9. 根据权利要求8所述的方法,其特征在于,所述位置参数包括以下至少一项:
    所述终端与小区服务卫星之间的第一距离,所述终端位于所述小区服务卫星的服务范围内;
    所述终端与地面网络之间的第二距离;
    所述终端与卫星服务小区中心地面参考点之间的第三距离;
    所述终端与所述小区服务卫星之间的第一往返时延;
    所述终端与所述地面网络之间的第二往返时延。
  10. 根据权利要求7所述的方法,其特征在于,
    所述第N+1个位置参数范围是指小于第N个位置参数阈值的参数范围,所述第N-i+1个位置参数范围是指小于第N-i个位置参数阈值且大于第N-i+1个位置参数阈值的参数范围,所述第1个位置参数范围是指大于第1个位置参数阈值的参数范围;
    所述第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,所述第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于第N-i+1个质量参数阈值的参数范围,所述第1个质量参数范围是指大于第1个质量参数阈值的参数范围。
  11. 根据权利要求10所述的方法,其特征在于,所述位置参数包括:
    所述终端至小区服务卫星相对于地面水平方向的倾角,所述终端位于所述小区服务卫星的服务范围内。
  12. 根据权利要求7所述的方法,其特征在于,所述下行信号质量包括以下至少一项:
    参考信号接收功率;
    参考信号接收质量;
    信干噪比。
  13. 根据权利要求2至12任一所述的方法,其特征在于,所述基于所述终端的位置参数所属的位置参数范围,确定所述终端的覆盖增强等级之前,包括:
    接收网络设备发送的配置信息,所述配置信息包括划分所述位置参数范围的N个位置参数阈值,N为大于或者等于1的正整数。
  14. 根据权利要求13所述的方法,其特征在于,所述配置信息是为小区公共配置的,且所述配置信息是由系统消息携带配置的。
  15. 根据权利要求13所述的方法,其特征在于,所述配置信息还用于为所述终端配置与N+1个覆盖增强等级对应的N+1个随机接入信道资源。
  16. 根据权利要求15所述的方法,其特征在于,所述随机接入信道资源包括以下至少一项:
    随机接入信道时频资源;
    窄带物理随机接入信道重复传输次数;
    随机接入响应窗长;
    消息3重复传输次数。
  17. 根据权利要求2至12任一所述的方法,其特征在于,所述方法还包括:
    响应于物理下行控制信道命令触发随机接入过程、且所述物理下行控制信道命令指示了起始覆盖增强等级,将所述起始覆盖增强等级确定为所述终端的覆盖增强等级;或者,
    响应于所述物理下行控制信道命令触发随机接入过程、且网络设备指示了起始窄带物理随机接入信道重复传输次数,将所述起始窄带物理随机接入信道重复传输次数对应的覆盖增强等级确定为所述终端的覆盖增强等级;或者,
    响应于所述物理下行控制信道命令触发随机接入过程、且高层配置了所述起始覆盖增强等级,将所述起始覆盖增强等级确定为所述终端的覆盖增强等级。
  18. 根据权利要求1所述的方法,其特征在于,所述基于所述终端的位置参数确定覆盖增强等级,包括:
    在小区选择过程中,基于所述终端的位置参数确定所述终端的覆盖增强等级为第一类覆盖等级或者第二类覆盖等级。
  19. 根据权利要求18所述的方法,其特征在于,
    所述第一类覆盖等级包括第0级覆盖增强等级;
    所述第二类覆盖等级包括除所述第0级覆盖增强等级之外的其他覆盖增强等级。
  20. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第一类覆盖等级或者第二类覆盖等级,包括:
    在所述位置参数小于所述第一参数阈值的情况下,若所述终端仅能够获取第一类信息块,确定所述终 端的覆盖增强等级为所述第二类覆盖等级;
    若所述终端能够获取第二类信息块,确定所述终端的覆盖增强等级为所述第一类覆盖等级。
  21. 根据权利要求20所述的方法,其特征在于,
    所述第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
    所述第二类信息块包括系统信息块1。
  22. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值,所述第一参数阈值小于所述第二参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第二类覆盖等级,包括:
    在所述位置参数大于所述第一参数阈值且小于所述第二参数阈值的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  23. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值和第三参数阈值,所述第三参数阈值大于所述第一参数阈值和所述第二参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第二类覆盖等级,包括:
    在所述位置参数大于所述第一参数阈值和所述第二参数阈值,且所述位置参数小于所述第三参数阈值的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  24. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第一类覆盖等级或者第二类覆盖等级,包括:
    在所述位置参数小于所述第一参数阈值,且所述终端满足所述第一类覆盖等级对应的小区选择准则的情况下,若所述终端仅能够获取第一类信息块,确定所述终端的覆盖增强等级为所述第二类覆盖等级;
    若所述终端能够获取第二类信息块,确定所述终端的覆盖增强等级为所述第一类覆盖等级。
  25. 根据权利要求24所述的方法,其特征在于,
    所述第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
    所述第二类信息块包括系统信息块1。
  26. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值,所述第一参数阈值小于所述第二参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第二类覆盖等级,包括:
    在所述位置参数大于所述第一参数阈值或者所述终端不满足所述第一类覆盖增强等级对应的小区选择准则的情况下,若所述位置参数小于所述第二参数阈值,且所述终端满足所述第二类覆盖等级对应的第一小区选择准则的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  27. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值和第三参数阈值,所述第三参数阈值大于所述第一参数阈值和所述第二参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第二类覆盖等级,包括:
    在所述位置参数大于所述第一参数阈值和所述第二参数阈值,或所述终端不满足目标小区选择准则的情况下,若所述位置参数小于所述第三参数阈值,且所述终端满足所述第二覆盖等级对应的第二小区选择准则,将所述第二类覆盖等级确定为所述终端的覆盖增强等级;
    其中,所述目标小区选择准则包括所述第一类覆盖等级对应的小区选择准则和所述第二类覆盖等级对应的第一小区选择准则。
  28. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第一类覆盖等级或者第二类覆盖等级,包括:
    在所述位置参数大于所述第一参数阈值的情况下,若所述终端仅能够获取第一类信息块,确定所述终端的覆盖增强等级为所述第二类覆盖等级;
    若所述终端能够获取第二类信息块,确定所述终端的覆盖增强等级为所述第一类覆盖等级。
  29. 根据权利要求28所述的方法,其特征在于,
    所述第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
    所述第二类信息块包括系统信息块1。
  30. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值,所述第一参数阈值大于所述第二参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第二类覆盖等级,包括:
    在所述位置参数小于所述第一参数阈值且大于所述第二参数阈值的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  31. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值和第三参数阈值,所述第三参数阈值小于所述第一参数阈值和所述第二参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第二类覆盖等级,包括:
    在所述位置参数小于所述第一参数阈值和所述第二参数阈值,且所述位置参数大于所述第三参数阈值的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  32. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第一类覆盖等级或者第二类覆盖等级,包括:
    在所述位置参数大于所述第一参数阈值,且所述终端满足所述第一类覆盖等级对应的小区选择准则的情况下,若所述终端仅能够获取第一类信息块,确定所述终端的覆盖增强等级为所述第二类覆盖等级;
    若所述终端能够获取第二类信息块,确定所述终端的覆盖增强等级为所述第一类覆盖等级。
  33. 根据权利要求32所述的方法,其特征在于,
    所述第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
    所述第二类信息块包括系统信息块1。
  34. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值,所述第一参数阈值大于所述第二参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第二类覆盖等级,包括:
    在所述位置参数小于所述第一参数阈值或者UE不满足第一类覆盖增强等级对应的小区选择准则的情况下,若所述位置参数大于所述第二参数阈值,且所述终端满足所述第二类覆盖等级对应的第一小区选择准则的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  35. 根据权利要求18所述的方法,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值和第三参数阈值,所述第三参数阈值小于所述第一参数阈值和所述第二参数阈值;
    所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第二类覆盖等级,包括:
    在所述位置参数小于所述第一参数阈值和所述第二参数阈值,或所述终端不满足目标小区选择准则的情况下,若所述位置参数大于所述第三参数阈值,且所述终端满足所述第二覆盖等级对应的第二小区选择准则,将所述第二类覆盖等级确定为所述终端的覆盖增强等级;
    其中,所述目标小区选择准则包括所述第一类覆盖等级对应的小区选择准则和所述第二类覆盖等级对应的第一小区选择准则。
  36. 根据权利要求20至27任一所述的方法,其特征在于,所述位置参数包括以下至少一项:
    所述终端与小区服务卫星之间的第一距离,所述终端位于所述小区服务卫星的服务范围内;
    所述终端与地面网络之间的第二距离;
    所述终端与卫星服务小区中心地面参考点之间的第三距离;
    所述终端与所述小区服务卫星之间的第一往返时延;
    所述终端与所述地面网络之间的第二往返时延。
  37. 根据权利要求28至35任一所述的方法,其特征在于,所述位置参数包括:
    所述终端至小区服务卫星相对于地面水平方向的倾角,所述终端位于所述小区服务卫星的服务范围内。
  38. 根据权利要求18至35任一所述的方法,其特征在于,所述基于所述终端的位置参数确定所述终端的覆盖增强等级为第一类覆盖等级或者第二类覆盖等级之前,包括:
    接收网络设备发送的广播消息,所述广播消息包括所述第一类覆盖等级和所述第二类覆盖等级的配置信息。
  39. 根据权利要求38所述的方法,其特征在于,所述配置信息包括所述第一类覆盖等级和所述第二类覆盖等级对应的参数阈值。
  40. 根据权利要求38所述的方法,其特征在于,所述配置信息包括所述第一类覆盖等级和所述第二类覆盖等级对应的小区选择准则所使用的参数。
  41. 一种覆盖增强等级的配置方法,其特征在于,所述方法由网络设备执行,所述方法包括:
    向终端发送配置信息,所述配置信息包括为所述终端配置的用于根据位置参数确定覆盖增强等级所需的参数,所述位置参数用于反映所述终端的位置。
  42. 根据权利要求41所述的方法,其特征在于,所述配置信息包括划分位置参数范围的N个位置参数 阈值,N为大于或者等于1的正整数。
  43. 根据权利要求42所述的方法,其特征在于,所述配置信息包括与N+1个覆盖增强等级对应的N+1个随机接入信道资源。
  44. 根据权利要求43所述的方法,其特征在于,所述随机接入信道资源包括以下至少一项:
    随机接入信道时频资源;
    窄带物理随机接入信道重复传输次数;
    随机接入响应窗长;
    消息3重复传输次数。
  45. 根据权利要求41所述的方法,其特征在于,所述方法还包括:
    向所述终端发送物理下行控制信道命令,所述物理下行控制信道命令携带有所述终端的覆盖增强等级。
  46. 根据权利要求41所述的方法,其特征在于,所述配置信息是为小区公共配置的,且所述配置信息是由系统消息携带配置的。
  47. 根据权利要求41所述的方法,其特征在于,所述配置信息包括第一类覆盖等级和第二类覆盖等级对应的参数阈值。
  48. 根据权利要求47所述的方法,其特征在于,所述配置信息包括所述第一类覆盖等级和所述第二类覆盖等级对应的小区选择准则所使用的参数。
  49. 一种覆盖增强等级的确定装置,其特征在于,所述装置包括:
    第一处理模块,用于基于终端的位置参数确定覆盖增强等级;其中,所述位置参数用于反映所述终端的位置。
  50. 根据权利要求49所述的装置,其特征在于,
    所述第一处理模块,用于在随机接入过程中,基于所述终端的位置参数所属的位置参数范围,确定所述终端的覆盖增强等级。
  51. 根据权利要求50所述的装置,其特征在于,所述第一处理模块,用于:
    响应于所述位置参数大于第N个位置参数阈值,将第N级覆盖增强等级确定为所述终端的覆盖增强等级;
    响应于所述位置参数大于第N-i个位置参数阈值且小于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为所述终端的覆盖增强等级;
    响应于所述位置参数小于第1个位置参数阈值,将第0级覆盖增强等级确定为所述终端的覆盖增强等级;
    其中,所述第N-i个位置参数阈值小于第N-i+1个位置参数阈值,N为大于或者等于1的正整数,i为小于N的正整数。
  52. 根据权利要求51所述的装置,其特征在于,所述位置参数包括以下至少一项:
    所述终端与小区服务卫星之间的第一距离,所述终端位于所述小区服务卫星的服务范围内;
    所述终端与地面网络之间的第二距离;
    所述终端与卫星服务小区中心地面参考点之间的第三距离;
    所述终端与所述小区服务卫星之间的第一往返时延;
    所述终端与所述地面网络之间的第二往返时延。
  53. 根据权利要求50所述的装置,其特征在于,所述第一处理模块,用于:
    响应于所述位置参数小于第N个位置参数阈值,将第N级覆盖增强等级确定为所述终端的覆盖增强等级;
    响应于所述位置参数小于第N-i个位置参数阈值且大于第N-i+1个位置参数阈值,将第N-i级覆盖增强等级确定为所述终端的覆盖增强等级;
    响应于所述位置参数大于第1个位置参数阈值,将第0级覆盖增强等级确定为所述终端的覆盖增强等级;
    其中,所述第N-i个位置参数阈值大于第N-i+1个位置参数阈值,N为大于或者等于1的正整数,i为小于N的正整数。
  54. 根据权利要求53所述的装置,其特征在于,所述位置参数包括:
    所述终端至小区服务卫星相对于地面水平方向的倾角,所述终端位于所述小区服务卫星的服务范围内。
  55. 根据权利要求50所述的装置,其特征在于,所述第一处理模块,用于:
    在满足所述位置参数属于第N+1个位置参数范围,以及所述终端的下行信号质量属于第N+1个质量参数范围中至少一项的情况下,将第N级覆盖增强等级作为所述终端的覆盖增强等级;
    在所述位置参数不属于第N-i+2个位置参数范围到第N+1个位置参数范围中的任何一个且所述下行信 号质量不属于第N-i+2个质量参数范围到第N+1个质量参数范围中的任何一个的情况下,若满足所述位置参数属于第N-i+1个位置参数范围、以及所述下行信号质量属于第N-i+1个质量参数范围中的至少一项,将第N-i级覆盖增强等级作为所述终端的覆盖增强等级;
    在所述位置参数不属于第2个位置参数范围到第N+1个位置参数范围中的任何一个且所述下行信号质量不属于第2个质量参数范围到第N+1个质量参数范围中的任何一个的情况下,若满足所述位置参数属于第1个位置参数范围、且所述下行信号质量属于第1个质量参数范围,将第0级覆盖增强等级作为所述终端的覆盖增强等级;N为大于或者等于1的正整数,i为小于N的正整数。
  56. 根据权利要求55所述的装置,其特征在于,
    所述第N+1个位置参数范围是指大于第N个位置参数阈值的参数范围,所述第N-i+1个位置参数范围是指大于第N-i个位置参数阈值且小于第N-i+1个位置参数阈值的参数范围,所述第1个位置参数范围是指小于第1个位置参数阈值的参数范围;
    所述第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,所述第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于第N-i+1个质量参数阈值的参数范围,所述第1个质量参数范围是指大于第1个质量参数阈值的参数范围。
  57. 根据权利要求56所述的装置,其特征在于,所述位置参数包括以下至少一项:
    所述终端与小区服务卫星之间的第一距离,所述终端位于所述小区服务卫星的服务范围内;
    所述终端与地面网络之间的第二距离;
    所述终端与卫星服务小区中心地面参考点之间的第三距离;
    所述终端与所述小区服务卫星之间的第一往返时延;
    所述终端与所述地面网络之间的第二往返时延。
  58. 根据权利要求55所述的装置,其特征在于,所述第一处理模块,用于:
    所述第N+1个位置参数范围是指小于第N个位置参数阈值的参数范围,所述第N-i+1个位置参数范围是指小于第N-i个位置参数阈值且大于第N-i+1个位置参数阈值的参数范围,所述第1个位置参数范围是指大于第1个位置参数阈值的参数范围;
    所述第N+1个质量参数范围是指小于第N个质量参数阈值的参数范围,所述第N-i+1个质量参数范围是指小于第N-i个质量参数阈值且大于第N-i+1个质量参数阈值的参数范围,所述第1个质量参数范围是指大于第1个质量参数阈值的参数范围。
  59. 根据权利要求58所述的装置,其特征在于,所述位置参数包括:
    所述终端至小区服务卫星相对于地面水平方向的倾角,所述终端位于所述小区服务卫星的服务范围内。
  60. 根据权利要求55所述的装置,其特征在于,所述下行信号质量包括以下至少一项:
    参考信号接收功率;
    参考信号接收质量;
    信干噪比。
  61. 根据权利要求50至60任一所述的装置,其特征在于,所述装置还包括:第一接收模块;
    所述第一接收模块,用于接收网络设备发送的配置信息,所述配置信息包括划分所述位置参数范围的N个位置参数阈值,N为大于或者等于1的正整数。
  62. 根据权利要求61所述的装置,其特征在于,所述配置信息是为小区公共配置的,且所述配置信息是由系统消息携带配置的。
  63. 根据权利要求61所述的装置,其特征在于,所述配置信息还用于为所述终端配置与N+1个覆盖增强等级对应的N+1个随机接入信道资源。
  64. 根据权利要求63所述的装置,其特征在于,所述随机接入信道资源包括以下至少一项:
    随机接入信道时频资源;
    窄带物理随机接入信道重复传输次数;
    随机接入响应窗长;
    消息3重复传输次数。
  65. 根据权利要求50至60任一所述的装置,其特征在于,所述第一处理模块,用于:
    响应于物理下行控制信道命令触发随机接入过程、且所述物理下行控制信道命令指示了起始覆盖增强等级,将所述起始覆盖增强等级确定为所述终端的覆盖增强等级;或者,
    响应于所述物理下行控制信道命令触发随机接入过程、且网络设备指示了起始窄带物理随机接入信道重复传输次数,将所述起始窄带物理随机接入信道重复传输次数对应的覆盖增强等级确定为所述终端的覆盖增强等级;或者,
    响应于所述物理下行控制信道命令触发随机接入过程、且高层配置了所述起始覆盖增强等级,将所述 起始覆盖增强等级确定为所述终端的覆盖增强等级。
  66. 根据权利要求49所述的装置,其特征在于,
    所述第一处理模块,用于在小区选择过程中,基于所述终端的位置参数确定所述终端的覆盖增强等级为第一类覆盖等级或者第二类覆盖等级。
  67. 根据权利要求66所述的装置,其特征在于,
    所述第一类覆盖等级包括第0级覆盖增强等级;
    所述第二类覆盖等级包括除所述第0级覆盖增强等级之外的其他覆盖增强等级。
  68. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值;所述第一处理模块,用于:
    在所述位置参数小于所述第一参数阈值的情况下,若所述终端仅能够获取第一类信息块,确定所述终端的覆盖增强等级为所述第二类覆盖等级;
    若所述终端能够获取第二类信息块,确定所述终端的覆盖增强等级为所述第一类覆盖等级。
  69. 根据权利要求68所述的装置,其特征在于,
    所述第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
    所述第二类信息块包括系统信息块1。
  70. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值,所述第一参数阈值小于所述第二参数阈值;所述第一处理模块,用于:
    在所述位置参数大于所述第一参数阈值且小于所述第二参数阈值的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  71. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值和第三参数阈值,所述第三参数阈值大于所述第一参数阈值和所述第二参数阈值;所述第一处理模块,用于:
    在所述位置参数大于所述第一参数阈值和所述第二参数阈值,且所述位置参数小于所述第三参数阈值的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  72. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值;所述第一处理模块,用于:
    在所述位置参数小于所述第一参数阈值,且所述终端满足所述第一类覆盖等级对应的小区选择准则的情况下,若所述终端仅能够获取第一类信息块,确定所述终端的覆盖增强等级为所述第二类覆盖等级;
    若所述终端能够获取第二类信息块,确定所述终端的覆盖增强等级为所述第一类覆盖等级。
  73. 根据权利要求72所述的装置,其特征在于,
    所述第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
    所述第二类信息块包括系统信息块1。
  74. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值,所述第一参数阈值小于所述第二参数阈值;所述第一处理模块,用于:
    在所述位置参数大于所述第一参数阈值或者所述终端不满足所述第一类覆盖增强等级对应的小区选择准则的情况下,若所述位置参数小于所述第二参数阈值,且所述终端满足所述第二类覆盖等级对应的第一小区选择准则的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  75. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值和第三参数阈值,所述第三参数阈值大于所述第一参数阈值和所述第二参数阈值;所述第一处理模块,用于:
    在所述位置参数大于所述第一参数阈值和所述第二参数阈值,或所述终端不满足目标小区选择准则的情况下,若所述位置参数小于所述第三参数阈值,且所述终端满足所述第二覆盖等级对应的第二小区选择准则,将所述第二类覆盖等级确定为所述终端的覆盖增强等级;
    其中,所述目标小区选择准则包括所述第一类覆盖等级对应的小区选择准则和所述第二类覆盖等级对应的第一小区选择准则。
  76. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值;所述第一处理模块,用于:
    在所述位置参数大于所述第一参数阈值的情况下,若所述终端仅能够获取第一类信息块,确定所述终端的覆盖增强等级为所述第二类覆盖等级;
    若所述终端能够获取第二类信息块,确定所述终端的覆盖增强等级为所述第一类覆盖等级。
  77. 根据权利要求76所述的装置,其特征在于,
    所述第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
    所述第二类信息块包括系统信息块1。
  78. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值,所述第一参数阈值大于所述第二参数阈值;所述第一处理模块,用于:
    在所述位置参数小于所述第一参数阈值且大于所述第二参数阈值的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  79. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值和第三参数阈值,所述第三参数阈值小于所述第一参数阈值和所述第二参数阈值;所述第一处理模块,用于:
    在所述位置参数小于所述第一参数阈值和所述第二参数阈值,且所述位置参数大于所述第三参数阈值的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  80. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值;所述第一处理模块,用于:
    在所述位置参数大于所述第一参数阈值,且所述终端满足所述第一类覆盖等级对应的小区选择准则的情况下,若所述终端仅能够获取第一类信息块,确定所述终端的覆盖增强等级为所述第二类覆盖等级;
    若所述终端能够获取第二类信息块,确定所述终端的覆盖增强等级为所述第一类覆盖等级。
  81. 根据权利要求80所述的装置,其特征在于,
    所述第一类信息块包括主信息块、带宽受限系统信息块1和系统信息块2;
    所述第二类信息块包括系统信息块1。
  82. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值,所述第一参数阈值大于所述第二参数阈值;所述第一处理模块,用于:
    在所述位置参数小于所述第一参数阈值或者UE不满足第一类覆盖增强等级对应的小区选择准则的情况下,若所述位置参数大于所述第二参数阈值,且所述终端满足所述第二类覆盖等级对应的第一小区选择准则的情况下,确定所述终端的覆盖增强等级为所述第二类覆盖等级。
  83. 根据权利要求66所述的装置,其特征在于,所述第一类覆盖等级对应第一参数阈值,所述第二类覆盖等级对应第二参数阈值和第三参数阈值,所述第三参数阈值小于所述第一参数阈值和所述第二参数阈值;所述第一处理模块,用于:
    在所述位置参数小于所述第一参数阈值和所述第二参数阈值,或所述终端不满足目标小区选择准则的情况下,若所述位置参数大于所述第三参数阈值,且所述终端满足所述第二覆盖等级对应的第二小区选择准则,将所述第二类覆盖等级确定为所述终端的覆盖增强等级;
    其中,所述目标小区选择准则包括所述第一类覆盖等级对应的小区选择准则和所述第二类覆盖等级对应的第一小区选择准则。
  84. 根据权利要求68至75任一所述的装置,其特征在于,所述位置参数包括以下至少一项:
    所述终端与小区服务卫星之间的第一距离,所述终端位于所述小区服务卫星的服务范围内;
    所述终端与地面网络之间的第二距离;
    所述终端与卫星服务小区中心地面参考点之间的第三距离;
    所述终端与所述小区服务卫星之间的第一往返时延;
    所述终端与所述地面网络之间的第二往返时延。
  85. 根据权利要求76至83任一所述的装置,其特征在于,所述位置参数包括:
    所述终端至小区服务卫星相对于地面水平方向的倾角,所述终端位于所述小区服务卫星的服务范围内。
  86. 根据权利要求66至83任一所述的装置,其特征在于,所述装置包括第一接收模块;
    所述第一接收模块,用于接收网络设备发送的广播消息,所述广播消息包括所述第一类覆盖等级和所述第二类覆盖等级的配置信息。
  87. 根据权利要求86所述的装置,其特征在于,所述配置信息包括所述第一类覆盖等级和所述第二类覆盖等级对应的参数阈值。
  88. 根据权利要求86所述的装置,其特征在于,所述配置信息包括所述第一类覆盖等级和所述第二类覆盖等级对应的小区选择准则所使用的参数。
  89. 一种覆盖增强等级的配置装置,其特征在于,所述装置包括:
    第二发送模块,用于向终端发送配置信息,所述配置信息包括为所述终端配置的用于根据位置参数确定覆盖增强等级所需的参数,所述位置参数用于反映所述终端的位置。
  90. 根据权利要求89所述的装置,其特征在于,所述配置信息包括划分位置参数范围的N个位置参数阈值,N为大于或者等于1的正整数。
  91. 根据权利要求90所述的装置,其特征在于,所述配置信息包括与N+1个覆盖增强等级对应的N+1 个随机接入信道资源。
  92. 根据权利要求91所述的装置,其特征在于,所述随机接入信道资源包括以下至少一项:
    随机接入信道时频资源;
    窄带物理随机接入信道重复传输次数;
    随机接入响应窗长;
    消息3重复传输次数。
  93. 根据权利要求89所述的装置,其特征在于,
    所述第二发送模块,还用于向所述终端发送物理下行控制信道命令,所述物理下行控制信道命令携带有所述终端的覆盖增强等级。
  94. 根据权利要求89所述的装置,其特征在于,所述配置信息是为小区公共配置的,且所述配置信息是由系统消息携带配置的。
  95. 根据权利要求89所述的装置,其特征在于,所述配置信息包括第一类覆盖等级和第二类覆盖等级对应的参数阈值。
  96. 根据权利要求95所述的装置,其特征在于,所述配置信息包括所述第一类覆盖等级和所述第二类覆盖等级对应的小区选择准则所使用的参数。
  97. 一种终端,其特征在于,所述终端包括:
    处理器;
    与所述处理器相连的收发器;
    其中,所述处理器被配置为加载并执行可执行指令以实现如权利要求1至40任一所述的覆盖增强等级的确定方法。
  98. 一种网络设备,其特征在于,所述网络设备包括:
    处理器;
    与所述处理器相连的收发器;
    其中,所述处理器被配置为加载并执行可执行指令以实现如权利要求41至48任一所述的覆盖增强等级的配置方法。
  99. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集,所述至少一条指令、所述至少一段程序、所述代码集或指令集由处理器加载并执行以实现如权利要求1至40任一所述的覆盖增强等级的确定方法,或者,如权利要求41至48任一所述的覆盖增强等级的配置方法。
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