WO2022267389A1 - 网络接入方法、设备和存储介质 - Google Patents

网络接入方法、设备和存储介质 Download PDF

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Publication number
WO2022267389A1
WO2022267389A1 PCT/CN2021/138881 CN2021138881W WO2022267389A1 WO 2022267389 A1 WO2022267389 A1 WO 2022267389A1 CN 2021138881 W CN2021138881 W CN 2021138881W WO 2022267389 A1 WO2022267389 A1 WO 2022267389A1
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Prior art keywords
user equipment
user equipments
free
demodulation
wireless channel
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PCT/CN2021/138881
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English (en)
French (fr)
Inventor
侯晓辉
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中兴通讯股份有限公司
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Publication of WO2022267389A1 publication Critical patent/WO2022267389A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters

Definitions

  • the present application relates to the communication field, in particular to a network access method, device and storage medium.
  • Low latency is a goal that is very difficult to achieve in communication, especially for low uplink latency, which often requires pre-scheduling or uplink license-free technologies.
  • the uplink pre-scheduling can be used to greatly reduce the uplink delay, when the number of concurrent terminal users in the cell is relatively large, the channel resources of the Physical Downlink Control Channel (PDCCH) will be consumed. This resource consumption is huge and very unrealistic. Therefore, how to realize simultaneous uplink access of multiple users without authorization is an urgent problem to be solved.
  • PDCCH Physical Downlink Control Channel
  • the embodiments of the present application provide a network access method, device, and storage medium, which realize simultaneous uplink access of multiple user equipments to a network without authorization.
  • An embodiment of the present application provides a network access method applied to a base station, including:
  • the authorization-free demodulation mode is sent to the user equipment, so that the user equipment performs authorization-free demodulation, performs uplink authorization-free access to the network at the same time.
  • An embodiment of the present application provides a network access method applied to a user equipment, including:
  • An embodiment of the present application provides a network access device applied to a base station, including:
  • the first determining module is configured to determine the received power of two user equipments and the wireless channel correlation between the two user equipments;
  • the second determining module is configured to determine power control strategies of two user equipments according to the wireless channel correlation
  • a third determining module configured to determine an unlicensed demodulation mode of the user equipment according to the power control strategy and the wireless channel correlation
  • the first transmitter is configured to send the authorization-free demodulation mode to the user equipment, so that the user equipment performs authorization-free demodulation, performs uplink authorization-free access to the network at the same time.
  • An embodiment of the present application provides a network access device, which is applied to user equipment, including:
  • a receiver configured to receive the license-free demodulation mode sent by the base station
  • the access device is configured to perform authorization-free demodulation on the user equipment according to the authorization-free demodulation mode, so as to perform uplink authorization-free access to the network at the same time.
  • An embodiment of the present application provides a network access device, including a communication module, a memory, and one or more processors; wherein:
  • the communication module is configured to perform communication interaction between the base station and the user equipment
  • the memory configured to store one or more programs
  • the one or more processors are made to implement the method described in any of the foregoing embodiments.
  • An embodiment of the present application provides a storage medium, the storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the foregoing embodiments is implemented.
  • FIG. 1 is a flowchart of a network access method provided by an embodiment of the present application
  • FIG. 2 is a flow chart of another network access method provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of spectrum resource allocation based on service application perception provided by an embodiment of the present application
  • FIG. 4 is a flow chart of another network access method provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of license-free multi-user uplink transmission under frequency domain multiplexing provided by an embodiment of the present application
  • FIG. 6 is an implementation framework of a user equipment-based self-service sensing application provided by an embodiment of the present application
  • FIG. 7 is an implementation framework of network master-centered application awareness provided by the embodiment of the present application.
  • FIG. 8 is a structural block diagram of a network access device provided in an embodiment of the present application.
  • FIG. 9 is a structural block diagram of another network access device provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a network access device provided by an embodiment of the present application.
  • the embodiment of the present application solves the problem of low uplink latency, and involves realizing low uplink latency in an authorization-free manner. Because although uplink pre-scheduling can be used to greatly reduce the uplink delay, when the number of concurrent terminal users in the cell is large, the channel resources of the PDCCH will be consumed. This resource consumption is huge and very unrealistic.
  • the embodiment of the present application proposes a network access method, in particular, an uplink license-free simultaneous access method for pilot-guided multi-user devices.
  • the method can effectively solve the problem of resource consumption of the PDCCH channel, and at the same time perform optimal adaptation of services and air interface resources through the perception of service applications.
  • Different applications correspond to different delay requirements, different rate requirements, and different services have different packet sizes each time they are sent. Therefore, through the perception of business applications, the best adaptation can be achieved in spectrum resource utilization, spectrum efficiency, and service level agreement (Service Level Agreement, SLA), which is extremely important for communications where spectrum resources are very precious Yes, and this is also an extremely important evolution direction of 6G.
  • SLA Service Level Agreement
  • the optimal allocation of uplink authorization-free resources can be performed according to the delay requirements and reliability of different uplink services.
  • the embodiment of this application divides spectrum resources into two major classes, one of which is extremely low delay ( ⁇ 2ms) and ultra-high reliability (more than 5 nines).
  • This part of spectrum resources The set is denoted as A1, where the frequency domain resource allocation of A1 is for the access user to perform orthogonal frequency division multiple access.
  • Pilot assistance is required; the other part is low-latency ( ⁇ 3ms) and high-reliability (less than 5 nines), and this part of the spectrum resource set is marked as A2.
  • the embodiment of this application proposes a joint consideration scheme for multi-user multiplexing of frequency domain resources without authorization and uplink power control, so that the uplink PHY of multiple users can be balanced under this condition Best demodulation performance.
  • FIG. 1 is a flowchart of a network access method provided in an embodiment of the present application. This embodiment is applicable to a situation where multiple user equipments simultaneously access the network without authorization in the uplink.
  • This embodiment can be executed by a network access device.
  • the network access device may be a base station. As shown in Figure 1, this embodiment includes:
  • S110 Determine received power of two user equipments and wireless channel correlation between the two user equipments.
  • the wireless channel correlation refers to the correlation between channels corresponding to two user equipments (User Equipment, UE).
  • determining the received power of the two user equipment and the wireless channel correlation between the two user equipment includes: according to the physical random access of the user equipment in the access phase
  • the received power of the channel Physical Random Access Channel, PRACH
  • PRACH Physical Random Access Channel
  • the base station can calculate the received power of the two user equipments respectively by detecting the received power of the user equipment in the access phase PRACH, so as to use their relative relationship and absolute setting in Reasonable power control is performed in the authorization-free phase.
  • the radio channel correlation between corresponding two user equipments is determined according to the preamble sequence of the PRACH channel where the user equipments are located. It can be understood that the channel estimation of the two user equipments is directly calculated according to a pre-configured calculation formula to obtain the wireless channel correlation, that is, the cross-correlation coefficient between the two user equipments. Wherein, the pre-configured calculation formula can refer to the prior art, which will not be repeated here.
  • determining the received power of the two user equipments and the wireless channel correlation between the two user equipments includes: according to Orthogonal pilots determine the received power of two user equipments and the wireless channel correlation between the two user equipments.
  • the received power of the two user equipments and the wireless channel correlation between the two user equipments are respectively detected according to the orthogonal pilot frequency.
  • the received power of the user equipment is the average received power of each resource element (Resource Element, RE) of the PRACH; the wireless channel correlation, that is, the calculation of the complex sequence of the channel estimates of the two user equipments and the mutual relationship Just count.
  • S120 Determine power control policies of two user equipments according to radio channel correlation.
  • the power control strategy refers to a strategy for adjusting the current receiving power of the user equipment, so as to make the user equipment work in an optimal demodulation interval.
  • determining the power control strategy according to the wireless channel correlation includes: when the wireless channel correlation is large, adjusting the uplink transmission power according to the serial interference cancellation (Serial Interference Cancellation, SIC) demodulation mode, and the user The equipment works in the best SIC demodulation interval; in the case of small wireless channel correlation, the user equipment works in the best joint equalization signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR) interval.
  • serial Interference Cancellation Serial Interference Cancellation
  • SINR Signal to Interference plus Noise Ratio
  • the uplink transmission power is adjusted according to the SIC demodulation mode, so that the two user equipments work in the SIC optimal demodulation interval, wherein the SIC optimal demodulation
  • the interval is that the received power difference of the two user equipments is within the first preset power deviation range, and at the same time, the received power of each user equipment is greater than a reasonable threshold for SIC demodulation.
  • the demodulation is performed according to the joint equalization mode, and at the same time, the two user equipments are made to work in the optimal SINR interval of the joint equalization, wherein the optimal SINR interval of the joint equalization is two
  • the optimal SINR interval of the joint equalization is two
  • the received power difference of the user equipment is within the second preset power deviation range, and the received power of each user equipment is greater than a reasonable threshold of joint equalized demodulation.
  • both the reasonable threshold for SIC demodulation and the reasonable threshold for joint equalized demodulation refer to the optimal baseband demodulation thresholds of the two user equipments.
  • the optimal baseband demodulation thresholds are different, that is, the reasonable thresholds of the SIC demodulation and the joint equalization demodulation are different.
  • the SIC demodulation method first estimate the channel of the strong user equipment (also called strong user), and demodulate the user equipment with high receiving power; then reconstruct the channel of the strong user equipment to the receiver through the wireless channel; Then the signal of the strong user equipment can be subtracted from the received total signal to obtain the channel of the weak user equipment (also called weak user) through the channel; then estimate the channel of the weak user equipment; finally demodulate the signal of the weak user equipment ; Therefore, the received power deviation for strong user equipment and weak user equipment is larger.
  • the reasonable threshold of SIC demodulation is 10dB, and at the same time, it is ensured that each user equipment has a relatively large SINR relative to noise.
  • the channel estimation of the strong user equipment and the weak user equipment is carried out at the same time, and then the signals of the two user equipments are simultaneously performed. Therefore, the received power of the two user equipments is basically equal, or the received power deviation is less than 5dB, while ensuring that each user equipment has a relatively large SINR relative to noise.
  • S130 Determine an unlicensed demodulation mode of the user equipment according to the power control policy and the radio channel correlation.
  • the authorization-free demodulation mode refers to a mode in which the base station does not need to issue an authorization instruction to the user equipment, and the user equipment can perform demodulation.
  • determining the license-free demodulation mode of the user equipment according to the power control strategy and the wireless channel correlation includes: when the wireless channel correlation is large, and the received power difference between the two user equipments is within the first preset Assuming that the power deviation is within the range, the license-free demodulation method of the user equipment is serial interference cancellation demodulation; when the correlation of the wireless channel is small, and the received power difference between the two user equipments is the second preset power In the case of the deviation range, the license-free demodulation mode of the user equipment is joint balanced demodulation.
  • an appropriate power deviation is configured for the received power between the two user equipments, that is, the received power difference between the two user equipments is within the first preset power deviation range , when demodulating in the license-free stage, select serial interference cancellation demodulation; for channels with small channel correlation, make full use of the characteristics of the wireless channel, so that the received power of the two user equipments is basically equal, and when demodulating in the license-free stage , using a joint equilibrium approach.
  • the adjustment of the uplink power control to a higher or lower level also needs to be based on the noise memory of each user equipment, that is, it needs to meet the best SINR demodulation interval.
  • S140 Send the authorization-free demodulation mode to the user equipment, so that the user equipment performs authorization-free demodulation, performs uplink authorization-free access to the network at the same time.
  • the base station sends the license-free demodulation mode to each user equipment, so that the user equipment performs license-free demodulation, thereby enabling multiple user equipments to perform uplink license-free access to the network at the same time.
  • the wireless channel correlation detection between the two user equipments may not be performed, and the PRACH receiving power in the access phase and the SIC mode may be used for demodulation, and the reception of the two user equipments
  • the power uplink power control mode is adjusted to an optimal demodulation threshold, for example, the received power difference between two user equipments is within the first preset power deviation range, for example, the received power difference is 10dB.
  • the PRACH channel may also be used to calculate the radio channel correlation of the two user equipments, and determine that the demodulation mode adopted in the service phase is joint equalization or serial interference cancellation.
  • the technical solution of this embodiment through the combination of multi-user equipment multiplexing authorization-free and uplink power control, enables user equipment to perform authorization-free demodulation, and realizes the technical effect of multi-user equipment performing simultaneous uplink authorization-free access to the network.
  • FIG. 2 is a flow chart of another network access method provided by the embodiment of the present application. This embodiment further describes the process of network access on the basis of the above embodiments. As shown in Figure 2, the network access method in this embodiment includes the following steps:
  • the spectrum resource of the cell where the user equipment is located is divided into at least two spectrum resource sets, so that the uplink delay can be minimized as much as possible.
  • the spectrum resources of the cell where the user equipment is located may be divided into two spectrum resource sets, namely a first spectrum resource set and a second spectrum resource set.
  • the first spectrum resource set is marked as A1
  • the spectrum resources in A1 are extremely low delay ( ⁇ 2ms) and ultra-high reliability (more than 5 nines) resources
  • the second spectrum resource set is marked as A2
  • the spectrum resources in A2 are resources with low latency ( ⁇ 3ms) and high reliability (less than 5 nines).
  • the allocation of frequency domain resources in the part of A1 is based on orthogonal frequency division multiple access for access users.
  • selecting a corresponding spectrum resource set according to the received network delay requirements and reliability requirements of the user equipment includes: selecting a first spectrum resource set for a user equipment with low delay and high reliability; The user equipment with low reliability of time delay selects the second spectrum resource set.
  • the spectrum resource is allocated to the user equipment with low delay and high reliability in the way of frequency division multiple access; for For user equipment that requires low latency and low reliability, when the uplink is license-free, its spectrum resources are multiplexed, that is, the spectrum resources in the second spectrum resource set allow multi-user spectrum resources to be multiplexed.
  • orthogonalization processing may be performed.
  • the demodulation reference signal (DeModulation Reference Signal, DM RS) of the user equipment is orthogonal, and priority is given to frequency division.
  • the DM RS between user equipments is required to be orthogonal, and frequency division is given priority, followed by code division.
  • the pilot sequence of the user equipment occupies the spectrum resources in the second spectrum resource set as the first Orthogonal Frequency Division Multiplexing (OFDM) All REs of the symbol.
  • FIG. 3 is a schematic diagram of spectrum resource allocation based on service application perception provided by an embodiment of the present application. As shown in FIG. 3 , in the embodiment, for the orthogonal pilot sequence, the pilot completely occupies all REs in the first OFDM symbol in which the spectrum resource of the second spectrum resource set is.
  • the pilot uses a plurality of orthogonal correlation sequences, as long as the orthogonality is satisfied. Exemplarily, classical ZC sequences and the like can be directly used.
  • the pilot frequency is used to perform channel correlation detection and user equipment activation detection, and at the same time provide channel estimation for demodulation, and provide a benchmark closed-loop reference for uplink power control. For multiple user equipments with multiplexed spectrum resources, it needs to transmit orthogonal pilots and then transmit data.
  • the spectrum resource in the spectrum resource set is sent to the corresponding user equipment, so that the user equipment uses the spectrum resource as an uplink resource, so that the user equipment transmits uplink data through the uplink resource.
  • S240 Determine the received power of the two user equipments and the wireless channel correlation between the two user equipments.
  • S260 Determine an unlicensed demodulation mode of the user equipment according to the power control strategy and the radio channel correlation.
  • the base station can select the corresponding spectrum according to the network delay requirements and reliability requirements of the user equipment resource set, so as to achieve the technical effect of parallel access of multiple user equipments with different reliability requirements under low latency.
  • FIG. 4 is a flow chart of another network access method provided in the embodiment of the present application. This embodiment is applicable to a situation where multiple user equipments simultaneously access the network without authorization in the uplink.
  • This embodiment can be executed by a network access device.
  • the network access device may be user equipment. As shown in Figure 4, this embodiment includes:
  • the base station sends the license-free demodulation method determined according to the power control strategy and the wireless channel correlation to the user equipment, so that the user equipment performs license-free demodulation on itself according to the corresponding license-free demodulation mode, so that Realize the technical effect of uplink authorization-free access to the network at the same time.
  • the network access method applied to the user equipment before receiving the authorization-free demodulation method sent by the base station, the network access method applied to the user equipment further includes: based on network slicing, determining network delay requirements and reliability requirements according to service application characteristics ; Sending the network delay requirement and reliability requirement to the base station; receiving the spectrum resource set selected according to the network delay requirement and reliability requirement sent by the base station; using the spectrum resource in the spectrum resource set as an uplink resource.
  • the user equipment combines the network slicing, through the user equipment's perception of service application characteristics, converts the service's delay requirements and reliability requirements on the network, and the user equipment notifies the wireless network side through signaling.
  • FIG. 5 is a schematic diagram of license-free multi-user uplink transmission under frequency domain multiplexing provided by an embodiment of the present application.
  • the radio resource control (Radio Resource Control, RRC) signaling informs the base station, or informs the core network through the non-access stratum (Non-Access Stratum, NAS) signaling, and then the core network informs the base station , the base station selects corresponding uplink resources according to the corresponding network delay requirements and reliability requirements, so as to determine whether the license-free user equipment is on the resources of the first spectrum resource set or the resources of the second spectrum resource set.
  • RRC Radio Resource Control
  • NAS Non-Access Stratum
  • the wireless resources of the base station also provide the number of users that can be supported by the spectrum resources in the corresponding first spectrum resource set, the supported uplink rate, etc., and give the corresponding The number of users supported by the spectrum resources in the second spectrum resource set, the supported uplink rate, etc., are well planned in advance related to wireless.
  • similar planning can also be performed according to joint optimization of spectrum efficiency, spectrum utilization, and SLA requirements. Since the solution of the embodiment of the present application mainly focuses on the uplink, for the downlink, the embodiment of the present application does not make too many descriptions. This embodiment solves the problem of jointly optimizing spectrum utilization, spectrum efficiency, and SLA requirements through network slicing and application-aware resource allocation.
  • network delay requirements and reliability requirements are determined based on network switching and application awareness, so as to allocate spectrum resources according to the network delay requirements and reliability requirements.
  • FIG. 6 is an implementation framework of an application based on user equipment self-awareness provided by an embodiment of the present application
  • FIG. 7 is an implementation framework of an application awareness centered on a network master provided by an embodiment of this application.
  • the implementation framework of application awareness includes two types: one is user equipment autonomous awareness, see FIG. 6 ; the other is network master-centered application awareness, see FIG. 7 .
  • the user equipment proceeds to Mapping of slices and slice parameters, the specific mapping relationship is determined by the user equipment, and interacts with the core network through slice-related NAS signaling;
  • service description characteristics for example, APP ID, Fully Qualified Domain Name (FQDN), Internet Protocol (Internet Protocol, IP) quintuple
  • the core network informs the base station of the corresponding delay requirements and reliability requirements.
  • the core network can also perform certain logical transformations;
  • the base station selects the first spectrum resource set or the second spectrum resource set according to corresponding time delay and reliability requirements.
  • the difference between the network master-centered application-aware architecture and the UE autonomous-aware architecture is that the mapping policy is delivered by the network, and the network side can perform mapping logic verification on it when necessary.
  • the mapping policy may interact with the user equipment in a broadcast or unicast manner in a signaling process.
  • the design of the total budget of the time delay and the overall rate under the spectrum bandwidth is described.
  • a bandwidth of 20M is set aside for low-latency services, wherein the bandwidth of 10M is allocated to the spectrum resource A1 in the first spectrum resource set, The 10M bandwidth is allocated to spectrum resource A2 in the second spectrum resource set.
  • the modulation and coding scheme (Modulation and Coding Scheme, MCS) is 27, and the resource block ((Resource Block, RB) is 52, the slot is 31752bit, and the mini slot (2 symbols) is 3904; the MCS is 17, When RB is 52, the slot is 12552bit, and the mini slot is 1608bit.
  • MCS Modulation and Coding Scheme
  • 10M A1 resources for services with uplink reliability of 5 nines, for services with wireless side delay within 2ms, uplink license-free resources, for the overall design rate of uplink.
  • slot-level scheduling 31.752Mbps; in general coverage, slot-level scheduling: 12.552Mbps.
  • the number of supported users (that is, the number of user equipments) can be obtained by performing division conversion according to overall requirements such as time delay and rate.
  • the license-free demodulation process is described based on pilot-based license-free and joint power control.
  • the delay on the wireless side is 1ms
  • two user equipments are UE1 and UE2 respectively as an example to describe the license-free demodulation process.
  • UE1 and UE2 respectively access the base station, assuming that the received power of PRACH per RE of UE1 in the access phase is -78dbm; the received power of PRACH per RE of UE2 in the access phase is -82dbm.
  • UE1’s PUSCH access phase PUSCH received power per RE is -79dbm; UE2’s PUSCH access phase, PUSCH received power per RE is -84dbm.
  • the received power of PUSCH per RE is -79dbm; in the PUSCH access phase of UE2, the received power of PUSCH per RE is -79dbm.
  • the wireless channel correlation is 0.9. Therefore, SIC demodulation is required, and the transmit power of UE2 is adjusted to be increased by 10 dB.
  • the received power of PUSCH per RE is -79dbm; in the PUSCH access phase of UE2, the received power of PUSCH per RE is -69dbm.
  • UE1 and UE2 are demodulated according to the SIC demodulation scheme.
  • FIG. 8 is a structural block diagram of a network access device provided in an embodiment of the present application. This embodiment is applied to network access equipment. Wherein, the network access device is a base station. As shown in FIG. 8 , this embodiment includes: a first determining module 810 , a second determining module 820 , a third determining module 830 and a first transmitter 840 .
  • the first determination module 810 is configured to determine the received power of two user equipments and the wireless channel correlation between the two user equipments;
  • the second determination module 820 is configured to determine the power control strategies of the two user equipments according to the radio channel correlation
  • the third determination module 830 is configured to determine the license-free demodulation mode of the user equipment according to the power control strategy and the radio channel correlation;
  • the first transmitter 840 is configured to send the license-free demodulation mode to the user equipment, so that the user equipment performs license-free demodulation, performs uplink license-free access to the network at the same time.
  • the network access device provided in this embodiment is configured to implement the network access method in the embodiment shown in FIG. 1 .
  • the implementation principle and technical effect of the network access device provided in this embodiment are similar, and details are not repeated here.
  • the first determination module 810 when the user equipment initially accesses the base station in uplink, the first determination module 810 includes:
  • the first determining unit is configured to determine the received power of the two user equipments according to the received power of the PRSCH of the user equipments in the access phase;
  • the second determination unit is configured to determine the radio channel correlation between two user equipments according to the preamble sequence of the PRACH channel.
  • the first determination module 810 is specifically configured to: determine the received power of the two user equipments and the wireless channel correlation between the two user equipments according to the orthogonal pilot.
  • the second determination module 820 is specifically used to:
  • the user equipment is operated in the joint equalization optimum signal to interference plus noise ratio SINR interval.
  • the third determination module 830 includes:
  • the license-free demodulation mode of the user equipment is serial interference cancellation demodulation
  • the unlicensed demodulation mode of the user equipments is joint equalized demodulation.
  • the network access device further includes:
  • a divider configured to divide the spectrum resources of the cell where the user equipment is located into at least two spectrum resource sets before determining the received power of the two user equipments and the wireless channel correlation between the two user equipments;
  • a selector configured to select a corresponding spectrum resource set according to the received network delay requirement and reliability requirement of the user equipment
  • the second transmitter is configured to send the spectrum resource in the spectrum resource set to the user equipment, so that the user equipment uses the spectrum resource as an uplink resource.
  • the selector is specifically configured to: select the first spectrum resource set for low-latency and high-reliability user equipment;
  • the second spectrum resource set is selected.
  • the DMRS of the user equipment is orthogonal, and frequency division is given priority.
  • the pilot sequence of the user equipment occupies all resource elements RE of the first OFDM symbol in the second spectrum resource set.
  • FIG. 9 is a structural block diagram of another network access device provided in an embodiment of the present application. This embodiment is applied to network access equipment. Wherein, the network access device is user equipment. As shown in FIG. 9 , this embodiment includes: a first receiver 910 and an access device 920 .
  • the first receiver 910 is configured to receive the license-free demodulation mode sent by the base station;
  • the access device 920 is configured to perform authorization-free demodulation on user equipment in an authorization-free demodulation manner, so as to perform uplink authorization-free access to the network at the same time.
  • the network access device provided in this embodiment is configured to implement the network access method in the embodiment shown in FIG. 4 .
  • the implementation principle and technical effect of the network access device provided in this embodiment are similar and will not be repeated here.
  • the network access device applied to user equipment further includes:
  • the fourth determination module is configured to determine network delay requirements and reliability requirements based on network slicing according to service application characteristics
  • the third transmitter is configured to send the network delay requirement and the reliability requirement to the base station;
  • the second receiver is configured to receive the spectrum resource set sent by the base station and selected according to network delay requirements and reliability requirements;
  • the fifth determining module is configured to use the spectrum resource in the spectrum resource set as the uplink resource.
  • FIG. 10 is a schematic structural diagram of a network access device provided in an embodiment of the present application.
  • the device provided by this application includes: a processor 1010 , a memory 1020 and a communication module 1030 .
  • the number of processors 1010 in the device may be one or more, and one processor 1010 is taken as an example in FIG. 10 .
  • the number of storage 1020 in the device may be one or more, and one storage 1020 is taken as an example in FIG. 10 .
  • the processor 1010, the memory 1020, and the communication module 1030 of the device may be connected through a bus or in other ways. In FIG. 10, connection through a bus is taken as an example.
  • the device may be a base station.
  • the memory 1020 can be configured to store software programs, computer-executable programs and modules, such as program instructions/modules corresponding to devices in any embodiment of the present application (for example, the first determination module 810, second determination module 820, third determination module 830 and first transmitter 840).
  • the memory 1020 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to usage of the device, and the like.
  • the memory 1020 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices.
  • the memory 1020 may further include memory located remotely relative to the processor 1010, and these remote memories may be connected to the device through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the communication module 1030 is configured to perform communication interaction between the base station and the user equipment.
  • the device provided above may be configured to execute the network access method applied to the base station provided by any of the above embodiments, and have corresponding functions and effects.
  • the device provided above may be configured to execute the network access method applied to the user equipment provided in any of the above embodiments, and have corresponding functions and effects.
  • the embodiment of the present application also provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions When executed by a computer processor, the computer-executable instructions are used to execute a network access method applied to a base station.
  • the method includes: determining two user The received power of the device and the wireless channel correlation between the two user equipments; determine the power control strategy of the two user equipments according to the wireless channel correlation; determine the license-free demodulation mode of the user equipment according to the power control strategy and the wireless channel correlation ; Send the authorization-free demodulation mode to the user equipment, so that the user equipment performs authorization-free demodulation, and performs uplink authorization-free access to the network at the same time.
  • the embodiment of the present application also provides a storage medium containing computer-executable instructions.
  • the computer-executable instructions When executed by a computer processor, the computer-executable instructions are used to execute a network access method applied to user equipment.
  • the method includes: receiving The authorization-free demodulation method; according to the authorization-free demodulation method, the user equipment is demodulated without authorization to perform uplink authorization-free access to the network at the same time.
  • the technical solution of the embodiment of the present application by determining the received power of two user equipments and the wireless channel correlation between the two user equipments; determining the power control strategy of the two user equipments according to the wireless channel correlation; according to the power control strategy and The wireless channel correlation determines the authorization-free demodulation mode of the user equipment; the authorization-free demodulation mode is sent to the user equipment, so that the user equipment performs authorization-free demodulation, and performs uplink authorization-free access to the network at the same time.
  • the technical solution of this embodiment enables the user equipment to perform authorization-free demodulation through the combination of multi-user equipment multiplexing without authorization and uplink power control, and realizes the technical effect of multi-user equipment performing simultaneous uplink authorization-free access to the network.
  • user equipment covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.
  • the various embodiments of the present application can be implemented in hardware or special purpose circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software, which may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.
  • Computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages source or object code.
  • ISA Instruction Set Architecture
  • Any logic flow block diagrams in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions.
  • Computer programs can be stored on memory.
  • the memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to Read-Only Memory (ROM), Random Access Memory (RAM), Optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD)), etc.
  • Computer readable media may include non-transitory storage media.
  • Data processors can be of any type suitable for the local technical environment, such as but not limited to general purpose computers, special purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC ), programmable logic devices (Field-Programmable Gate Array, FGPA), and processors based on multi-core processor architectures.
  • DSP Digital Signal Processing
  • ASIC Application Specific Integrated Circuit
  • FGPA programmable logic devices
  • processors based on multi-core processor architectures such as but not limited to general purpose computers, special purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC ), programmable logic devices (Field-Programmable Gate Array, FGPA), and processors based on multi-core processor architectures.
  • DSP Digital Signal Processing
  • ASIC Application Specific Integrated Circuit
  • FGPA programmable logic devices

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Abstract

一种网络接入方法、设备和存储介质。该方法包括：确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性(S110)；根据所述无线信道相关性确定两个用户设备的功率控制策略(S120)；根据所述功率控制策略和所述无线信道相关性确定所述用户设备的免授权解调方式(S130)；将所述免授权解调方式发送至所述用户设备，以使所述用户设备进行免授权解调，并进行上行免授权同时接入网络(S140)。

Description

网络接入方法、设备和存储介质
相关申请的交叉引用
本申请基于申请号为202110700094.3申请日为2021年06月23日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及通信领域，具体涉及一种网络接入方法、设备和存储介质。
背景技术
随着工业互联以及垂直行业应用的逐渐普及，低时延的业务变得越来越重要。低时延是通信非常难达到的一个目标，特别是对于上行的低时延，往往需要依赖于预调度或者上行免授权的技术。在实际通信过程中，尽管可以通过上行预调度来使得上行时延大大降低，但是当小区下的终端并发用户数比较多时，会消耗物理上行控制信道(Physical Downlink Control Channel，PDCCH)的信道资源，这个资源消耗是巨大的，也是非常不现实的。因此，如何实现多用户的上行免授权同时接入是一个亟待解决的问题。
发明内容
有鉴于此，本申请实施例提供一种网络接入方法、设备和存储介质，实现了多个用户设备的上行免授权同时接入网络。
本申请实施例提供一种网络接入方法，应用于基站，包括：
确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性；
根据所述无线信道相关性确定两个用户设备的功率控制策略；
根据所述功率控制策略和所述无线信道相关性确定所述用户设备的免授权解调方式；以及
将所述免授权解调方式发送至所述用户设备，以使所述用户设备进行免授权解调，并进行上行免授权同时接入网络。
本申请实施例提供一种网络接入方法，应用于用户设备，包括：
接收基站发送的免授权解调方式；以及
按照所述免授权解调方式对所述用户设备进行免授权解调，以进行上行免授权同时接入网络。
本申请实施例提供一种网络接入装置，应用于基站，包括：
第一确定模块，配置为确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性；
第二确定模块，配置为根据所述无线信道相关性确定两个用户设备的功率控制策略；
第三确定模块，配置为根据所述功率控制策略和所述无线信道相关性确定所述用户设备的免授权解调方式；以及
第一发送器，配置为将所述免授权解调方式发送至所述用户设备，以使所述用户设备进行免授权解调，并进行上行免授权同时接入网络。
本申请实施例提供一种网络接入装置，应用于用户设备，包括：
接收器，配置为接收基站发送的免授权解调方式；以及
接入器，配置为按照所述免授权解调方式对所述用户设备进行免授权解调，以进行上行免授权同时接入网络。
本申请实施例提供一种网络接入设备，包括通信模块、存储器，以及一个或多个处理器；其中：
所述通信模块，配置为在基站和用户设备之间进行通信交互；
所述存储器，配置为存储一个或多个程序；
当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现上述任一实施例所述的方法。
本申请实施例提供一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现上述任一实施例所述的方法。
附图说明
图1是本申请实施例提供的一种网络接入方法的流程图；
图2是本申请实施例提供的另一种网络接入方法的流程图；
图3是本申请实施例提供的一种基于业务应用感知的频谱资源的分配示意图；
图4是本申请实施例提供的又一种网络接入方法的流程图；
图5是本申请实施例提供的一种频域复用下免授权的多用户上行发送示意图；
图6是本申请实施例提供的一种基于用户设备自助感知应用的实现框架；
图7是本申请实施例提供的一种以网络主控为中心的应用感知的实现框架；
图8是本申请实施例提供的一种网络接入装置的结构框图；
图9是本申请实施例提供的另一种网络接入装置的结构框图；以及
图10是本申请实施例提供的一种网络接入设备的结构示意图。
具体实施方式
下文中将结合附图对本申请的实施例进行说明。以下结合实施例附图对本申请进行描述，所举实例仅用于解释本申请，并非用于限定本申请的范围。
本申请实施例解决上行低时延的问题，涉及到通过免授权的方式来实现上行低时延。因为尽管可以通过上行预调度来使得上行的时延大大降低，但是当小区下的终端并发用户数比较多时，会消耗PDCCH的信道资源，这个资源消耗是巨大的，也是非常不现实的。
本申请实施例提出一种网络接入方法特别涉及到导频引导的多用户设别的上行免授权同时接入方法。该方法能够有效解决对PDCCH信道的资源耗费问题，同时通过对业务应用的感知，来进行业务和空口资源的最佳适配。不同的应用对应着不同的时延要求，不同的速率要求，不同的业务其每次发包的报文大小也不同。因此，通过对业务应用的感知，能够在频谱资源利用率、频谱效率、以及服务等级协议(Service Level Agreement，SLA)达到最佳的适配，这对于频谱资源非常宝贵的通信来说是极其重要的，同时这也是6G极其重要的一个演进方向。
能够根据不同的上行业务的可时延要求和可靠性来进行上行免授权资源的最佳分配。本申请实施例针对网络时延要求和可靠性要求，对频谱资源分成2个大等级，其中一个是极低 时延(<2ms)和超高可靠(5个9以上)的，这部分频谱资源集合记为A1，其中A1这部分的频域资源分配是是针对接入用户做正交的频分多址的，此时不存在多个用户的频域资源复用问题，因此，免授权不需要进行导频辅助；另外一部分是低时延(<3ms)和较高可靠性(5个9以下)的，这部分频谱资源集合记为A2。对于A2这部分资源，使用正交导频引导，存在多个用户针对上行的频域资源的复用。
对于频域资源A2复用这种情形，本申请实施例提出一种针对频域资源多用户复用免授权和上行功控进行联合考虑的方案，使得此种条件下多个用户上行PHY的均衡解调性能最佳。
在一实施例中，图1是本申请实施例提供的一种网络接入方法的流程图。本实施例适用于多个用户设备的上行免授权同时接入网络的情况。本实施例可以由网络接入设备执行。其中，网络接入设备可以为基站。如图1所示，本实施例包括：
S110、确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性。
其中，无线信道相关性指的是两个用户设备(User Equipment，UE)分别所对应信道之间的相关性。
在一实施例中，在用户设备上行初始接入基站时，确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性，包括：根据用户设备在接入阶段物理随机接入信道(Physical Random Access Channel，PRACH)的接收功率确定两个用户设备的接收功率；根据PRACH信道的前导序列确定两个用户设备之间的无线信道相关性。在实施例中，在用户设备上行初始接入基站时，基站可以通过检测用户设备在接入阶段PRACH的接收功率，分别计算得到两个用户设备的接收功率，以利用其相对关系和绝对设置在免授权阶段进行合理的功率控制。在实施例中，根据用户设备所在PRACH信道的前导序列确定对应两个用户设备之间的无线信道相关性。可以理解为，将两个用户设备的信道估计，直接按照预先配置的计算公式计算得到无线信道相关性，即两个用户设备之间的互相关系数。其中，预先配置的计算公式可以参见现有技术，对此不再赘述。
在一实施例中，在用户设备接入物理上行共享信道(Physical Uplink Shared Channel，PUSCH)信道之后，确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性，包括：根据正交导频确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性。在实施例中，在两个用户设备在PUSCH信道都接入之后，根据正交的导频，分别检测两个用户设备的接收功率和两个用户设备之间的无线信道相关性。在实施例中，用户设备的接收功率即为PRACH的每个资源单元(Resource Element，RE)的平均接收功率；无线信道相关性，即对两个用户设备的信道估计的复数序列进行计算互相关系数即可。
S120、根据无线信道相关性确定两个用户设备的功率控制策略。
在实施例中，功率控制策略指的是对用户设备当前的接收功率进行调整，以使用户设备工作在最佳的解调区间的策略。
在一实施例中，根据无线信道相关性确定功率控制策略，包括：在无线信道相关性大的情况下，按照串行干扰消除(Serial Interference Cancellation，SIC)解调方式调整上行发射功率，将用户设备工作在SIC最佳解调区间；在无线信道相关性小的情况下，将用户设备工作在联合均衡最佳信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)区间。在实施例中，在无线信道相关性比较大的情况下，按照SIC解调方式进行上行发射功率的调整，以使得两个用户设备工作在SIC最佳解调区间，其中，SIC最佳解调区间 是两个用户设备的接收功率差值在第一预设功率偏差范围内，同时每个用户设备的接收功率大于SIC解调合理门限。在实施例中，在无线信道相关性比较小的情况下，按照联合均衡方式进行解调，同时使得两个用户设备工作在联合均衡最佳SINR区间，其中，联合均衡最佳SINR区间是两个用户设备的接收功率差值在第二预设功率偏差范围内，同时每个用户设备的接收功率大于联合均衡解调合理门限。需要说明的是，SIC解调合理门限和联合均衡解调合理门限均指的是两个用户设备的最佳基带解调门限。对于SIC解调方式和联合均衡解调方式来说，其的最佳基带解调门限是不同的，即SIC解调合理门限和联合均衡解调合理门限是不同的。简单来说，对于SIC解调方式，先估计强用户设备(也可称为强用户)的信道，解调接收功率大的用户设备；然后重构强用户设备经过无线信道到达接收机的信道；然后可以在接收的总信号中减掉强用户设备的信号，得到弱用户设备(也可称为弱用户)经过信道的信道；然后估计弱用户设备的信道；最后解调出弱用户设备的信号；因此，针对强用户设备和弱用户设备的接收功率偏差大一些，比如，SIC解调合理门限为10dB，同时保证每个用户设备相对噪声具备一个较大的SINR。对于联合均衡解调方式，同时进行强用户设备和弱用户设备两个用户设备的信道估计，然后同时两个用户设备的信号，因此，两个用户设备的接收功率基本相等，或者接收功率偏差小于5dB，同时保证每个用户设备相对噪声具有一个较大的SINR。
S130、根据功率控制策略和无线信道相关性确定用户设备的免授权解调方式。
其中，免授权解调方式指的是基站无需向用户设备下发授权指令，用户设备即可进行解调的方式。在一实施例中，根据功率控制策略和无线信道相关性确定用户设备的免授权解调方式，包括：在无线信道相关性大，且两个用户设备之间的接收功率差值在第一预设功率偏差范围内的情况下，用户设备的免授权解调方式为串行干扰消除解调；在无线信道相关性小，且两个用户设备之间的接收功率差值为第二预设功率偏差范围内的情况下，用户设备的免授权解调方式为联合均衡解调。
在实施例中，对于信道相关性大的信道，两个用户设备之间的接收功率配置一个适当的功率偏差，即两个用户设备之间的接收功率差值在第一预设功率偏差范围内，在免授权阶段解调时，选择串行干扰消除解调；对于信道相关性小的信道，充分利用无线信道的特性，使得两个用户设备的接收功率基本相等，在免授权阶段解调时，采用联合均衡的方式。同时，上行功率控制的向大或向小调整，还需要根据每个用户设备相对于噪声记性，即需要满足最佳的SINR解调区间。
S140、将免授权解调方式发送至用户设备，以使用户设备进行免授权解调，并进行上行免授权同时接入网络。
在实施例中，基站将免授权解调方式发送至每个用户设备，以使用户设备进行免授权解调，从而使得多个用户设备进行上行免授权同时接入网络的技术效果。
当然，在上行初始接入时，可以不进行两个用户设备之间无线信道相关性的检测，可以利用接入阶段的PRACH接收功率，以及SIC方式进行解调，并将两个用户设备的接收功率上行功控方式调整到最佳解调门限，比如，两个用户设备之间的接收功率差值为第一预设功率偏差范围内，比如，接收功率差值为10dB。当然，也可以利用PRACH信道计算两个用户设备的无线信道相关性，确定业务阶段所采用的解调方式为联合均衡或者串行干扰消除。
本实施例的技术方案，通过多用户设备复用免授权和上行功率控制相结合，使得用户设 备进行免授权解调，实现了多用户设备进行上行免授权同时接入网络的技术效果。
在一实施例中，图2是本申请实施例提供的另一种网络接入方法的流程图。本实施例是在上述实施例的基础上，对网络接入的过程作进一步的说明。如图2所示，本实施例中的网络接入方法包括如下步骤：
S210、将用户设备所在小区的频谱资源划分成至少两个频谱资源集。
在实施例中，将用户设备所在小区的频谱资源划分成至少两个频谱资源集，从而可以将上行时延尽可能地降到最低。示例性地，可以将用户设备所在小区的频谱资源划分成两个频谱资源集，分别为第一频谱资源集和第二频谱资源集。示例性地，假设第一频谱资源集记为A1，并且A1中的频谱资源为极低时延(<2ms)和超高可靠(5个9以上)的资源；第二频谱资源集记为A2，并且A2中的频谱资源为低时延(<3ms)和较高可靠性(5个9以下)的资源。其中，A1这部分的频域资源分配是是针对接入用户做正交的频分多址的，此时不存在多个用户的频域资源复用问题，因此，免授权不需要进行导频辅助；对于A2这部分资源，使用正交导频引导，存在多个用户针对上行的频域资源的复用。可以理解为，对于A2资源，可以采用频谱资源多用户复用免授权和上行功控联合的方式，使得此种条件下多个用户设备上行PHY的均衡解调性能最佳。
S220、根据接收到的用户设备的网络时延要求和可靠性要求选择对应的频谱资源集。
在一实施例中，根据接收到的用户设备的网络时延要求和可靠性要求选择对应的频谱资源集，包括：对于低时延高可靠性的用户设备，选择第一频谱资源集；对于低时延低可靠性的用户设备，选择第二频谱资源集。在实施例中，对于要求低时延，同时要求很高可靠性的用户设备，在上行免授权时，将频谱资源按照频分多址的方式分配至低时延高可靠性的用户设备；对于要求低时延，同时要求可靠性没那么高的用户设备，在上行免授权时，将其频谱资源进行复用，即将第二频谱资源集中的频谱资源是允许多用户频谱资源复用的，为了更好地对激活态用户进行激活检测，同时为了此种条件下多个用户设备的解调性能达到更好的效果，可以进行正交化处理。
在一实施例中，对于低时延低可靠性的用户设备，用户设备的解调参考信号(DeModulation Reference Signal，DM RS)正交，且优先频分。在实施例中，在进行上行数据传输时，要求用户设备之间的DM RS正交，并且优先频分，其次码分。
在一实施例中，对于低时延低可靠性的用户设备，用户设备的导频序列占用第二频谱资源集中的频谱资源为第一个正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号的所有RE。图3是本申请实施例提供的一种基于业务应用感知的频谱资源的分配示意图。如图3所示，在实施例中，对于正交的导频序列，导频完全占用第二频谱资源集的频谱资源为第一个OFDM符号的所有RE。导频使用正交的多个相关性序列，满足正交性即可。示例性地，可直接利用经典的ZC序列等。利用导频进行信道的相关性检测和用户设备的激活检测，同时为解调提供信道估计，为上行功率控制提供基准的闭环参考。对于频谱资源复用的多个用户设备，其需要发射正交导频，然后再发射数据。
S230、将频谱资源集中的频谱资源发送至用户设备，以使用户设备将频谱资源作为上行资源。
在实施例中，将频谱资源集中的频谱资源发送至对应的用户设备，以使用户设备将频谱资源作为上行资源，以使得用户设备通过上行资源进行上行数据的传输。
S240、确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性。
S250、根据无线信道相关性确定两个用户设备的功率控制策略。
S260、根据功率控制策略和无线信道相关性确定用户设备的免授权解调方式。
S270、将免授权解调方式发送至用户设备，以使用户设备进行免授权解调，并进行上行免授权同时接入网络。
本实施例的技术方案，在上述实施例的基础上，通过将用户设备所在小区的频谱资源划分成多个频谱资源集，基站可以根据用户设备的网络时延要求和可靠性要求选择对应的频谱资源集，从而实现了低时延下的不同可靠性要求的多个用户设备并行接入的技术效果。
在一实施例中，图4是本申请实施例提供的又一种网络接入方法的流程图。本实施例适用于多个用户设备的上行免授权同时接入网络的情况。本实施例可以由网络接入设备执行。其中，网络接入设备可以为用户设备。如图4所示，本实施例包括：
S410、接收基站发送的免授权解调方式。
S420、按照免授权解调方式对用户设备进行免授权解调，以进行上行免授权同时接入网络。
在实施例中，基站将根据功率控制策略和无线信道相关性确定的免授权解调方式发送至用户设备，以使用户设备按照对应的免授权解调方式对自身进行免授权解调，从而可以实现上行免授权同时接入网络的技术效果。
在一实施例中，在所述接收基站发送的免授权解调方式之前，应用于用户设备的网络接入方法，还包括：基于网络切片，根据业务应用特征确定网络时延要求和可靠性要求；将所述网络时延要求和可靠性要求发送至基站；接收基站发送的按照所述网络时延要求和可靠性要求选择的频谱资源集；将所述频谱资源集中的频谱资源作为上行资源。在实施例中，用户设备结合网络切片，通过用户设备对业务应用特征的感知，转化为业务对网络的时延要求以及可靠性要求等，用户设备通过信令告知无线网络侧。图5是本申请实施例提供的一种频域复用下免授权的多用户上行发送示意图。如图5所示，无线资源控制(Radio Resource Control，RRC)信令信令告知基站，或者通过非接入层(Non-Access Stratum，NAS)信令告诉核心网，然后再由核心网告知基站，基站根据相应的网络时延要求和可靠性要求选择进行相应的上行资源，从而决定用户设备的免授权是在第一频谱资源集的资源上，还是在第二频谱资源集的资源上。当通过NAS信令通知网络时，可以选择在切片的一些相关辅助参数里告知网络相应的时延和可靠性等级等。为了充分的保证上行业务的性能，特别是低时延的性能，基站的无线资源同时给出相应的第一频谱资源集中的频谱资源能够支持的用户数、支持的上行速率等，给出相应的第二频谱资源集中的频谱资源能够支持的用户数、支持的上行速率等，做好无线相关的预先规划。当然，对于下行，也可以按照频谱效率、频谱利用率、以及SLA要求的联合最优化，进行类似的规划。由于本申请实施例的方案主要关注上行，针对下行，本申请实施例不做过多展开的描述。本实施例通过网络切片和应用感知的资源分配，解决了频谱利用率、频谱效率和SLA要求联合最优的问题。
在一实施例中，基于网络切换和应用感知确定网络时延要求和可靠性要求，以按照网络时延要求和可靠性要求进行频谱资源的分配。图6是本申请实施例提供的一种基于用户设备自助感知应用的实现框架；图7是本申请实施例提供的一种以网络主控为中心的应用感知的实现框架。在实施例中，应用感知的实现框架包括两种：一种是用户设备自主的感知，参见 图6；另一种是以网络主控为中心的应用感知，参见图7。
对于用户设备自主的感知架构，流程如下：
用户设备根据相应的业务描述特征(比如，APP ID，全域名名称(Fully Qualified Domain Name，FQDN)，互联网协议(Internet Protocol，IP)五元组)，根据其中的一个参数或者几个参数进行到切片以及切片参数的映射，具体映射关系由用户设备决定，通过切片的相关NAS信令和核心网交互；
核心网告知基站相应的时延要求和可靠性要求，当然，核心网也可以做一定的逻辑转化；
基站根据相应的时延和可靠性要求，做出选择第一频谱资源集或者第二频谱资源集。
对于以网络主控为中心的应用感知架构和UE自主感知架构的区别在于：映射策略是由网络下发的，必要时，网络侧可以对其进行映射逻辑校验。映射策略可以通过广播方式或者单播方式以信令流程的方式和用户设备交互。
在一实施例中，对频谱带宽下的时延和总体速率的总预算的设计进行说明。示例性地，假设对于40M带宽的频分双工(FDD)新空口(New Radio，NR)，划出20M带宽给低时延业务，其中10M带宽分配至第一频谱资源集中的频谱资源A1，10M带宽分配至第二频谱资源集中的频谱资源A2。
示例性地，在调制编码策略(Modulation and Coding Scheme，MCS)为27，资源块((Resource Block，RB)为52时，slot为31752bit，mini slot(2符号)为3904；在MCS为17，RB为52时，slot为12552bit，mini slot为1608bit。
10M的A1资源，对于上行可靠性在5个9的业务，无线侧时延在2ms以内的业务，上行免授权资源，对于上行总体设计速率。在非常好的覆盖时，slot级调度：31.752Mbps；在一般覆盖时，slot级调度：12.552Mbps。
10M的A2资源，对于上行可靠性在4个9的业务，无线侧时延在1ms以内的业务，上行免授权资源，对于上行总体设计速率。比如，利用一个符号做导频，对于2符号的minislot，优势小一些。免授权的导频开销占比50％。但是对于7符号的minislot就明显有容量优势。开销占比仅为14％。在非常好的覆盖时，minislot级别调度：3.904/2＝1.952Mbps；在一般覆盖时，minislot级别调度：1.608/2＝0.804Mbps。
其中，支持的用户数(即用户设备数量)可以根据时延、速率等的总体要求进行除法的换算得到。
在一实施例中，基于导频的免授权和联合功控，对免授权解调过程进行说明。针对以上实施例子，按照一般覆盖评估。假设支持无线侧时延1ms，1个minislot同时上行免授权2个用户设备，则每个用户设备的速率为0.804/4＝0.402Mbps。示例性地，本实施例以两个用户设备分别为UE1和UE2为例，对免授权解调过程进行说明。
首先，UE1和UE2分别接入基站，假设接入阶段UE1的PRACH每RE接收功率为-78dbm；接入阶段UE2的PRACH每RE接收功率为-82dbm。
然后，在免授权下发以后，UE1的PUSCH接入阶段，PUSCH每RE接收功率的-79dbm；UE2的PUSCH接入阶段，PUSCH每RE接收功率的-84dbm。
利用前导计算得到，无线信道相关性为0.1，则使用联合均衡；针对UE2，下发功控调整，调大UE2的发射功率5dB；然后按联合均衡方案对UE1和UE2进行解调。
然后，过一段时间以后，UE1的PUSCH接入阶段，PUSCH每RE接收功率的-79dbm；UE2 的PUSCH接入阶段，PUSCH每RE接收功率的--79dbm。
然后，利用前导计算得到，无线信道相关性为0.9，因此，需要进行SIC解调，则调整UE2的发射功率，调大10dB。相应的，UE1的PUSCH接入阶段，PUSCH每RE接收功率的-79dbm；UE2的PUSCH接入阶段，PUSCH每RE接收功率的--69dbm。
然后，按照SIC的解调方案对UE1和UE2进行解调。
在一实施例中，图8是本申请实施例提供的一种网络接入装置的结构框图。本实施例应用于网络接入设备。其中，网络接入设备为基站。如图8所示，本实施例包括：第一确定模块810、第二确定模块820、第三确定模块830和第一发送器840。
其中，第一确定模块810，配置为确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性；
第二确定模块820，配置为根据无线信道相关性确定两个用户设备的功率控制策略；
第三确定模块830，配置为根据功率控制策略和无线信道相关性确定用户设备的免授权解调方式；
第一发送器840，配置为将免授权解调方式发送至用户设备，以使用户设备进行免授权解调，并进行上行免授权同时接入网络。
本实施例提供的网络接入装置设置为实现图1所示实施例的网络接入方法，本实施例提供的网络接入装置实现原理和技术效果类似，此处不再赘述。
在一实施例中，在用户设备上行初始接入基站时，第一确定模块810包括：
第一确定单元，配置为根据用户设备在接入阶段PRSCH的接收功率确定两个用户设备的接收功率；
第二确定单元，配置为根据PRACH信道的前导序列确定两个用户设备之间的无线信道相关性。
在一实施例中，在用户设备接入PUSCH信道之后，第一确定模块810具体用于：根据正交导频确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性。
在一实施例中，第二确定模块820，具体用于：
在无线信道相关性大的情况下，按照SIC解调方式调整上行发射功率，将用户设备工作在SIC最佳解调区间；
在无线信道相关性小的情况下，将用户设备工作在联合均衡最佳信号与干扰加噪声比SINR区间。
在一实施例中，第三确定模块830，包括：
在无线信道相关性大，且两个用户设备之间的接收功率差值在第一预设功率偏差范围内的情况下，用户设备的免授权解调方式为串行干扰消除解调；
在无线信道相关性小，且两个用户设备之间的接收功率差值为第二预设功率偏差范围内的情况下，用户设备的免授权解调方式为联合均衡解调。
在一实施例中，网络接入装置，还包括：
划分器，配置为在确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性之前，将用户设备所在小区的频谱资源划分成至少两个频谱资源集；
选择器，配置为根据接收到的用户设备的网络时延要求和可靠性要求选择对应的频谱资源集；
第二发送器，配置为将频谱资源集中的频谱资源发送至用户设备，以使用户设备将频谱资源作为上行资源。
在一实施例中，选择器，具体用于：对于低时延高可靠性的用户设备，选择第一频谱资源集；
对于低时延低可靠性的用户设备，选择第二频谱资源集。
在一实施例中，对于低时延低可靠性的用户设备，用户设备的DMRS正交，且优先频分。
在一实施例中，对于低时延低可靠性的用户设备，用户设备的导频序列占用第二频谱资源集中的频谱资源为第一个OFDM符号的所有资源单元RE。
在一实施例中，图9是本申请实施例提供的另一种网络接入装置的结构框图。本实施例应用于网络接入设备。其中，网络接入设备为用户设备。如图9所示，本实施例包括：第一接收器910和接入器920。
其中，第一接收器910，配置为接收基站发送的免授权解调方式；
接入器920，配置为按照免授权解调方式对用户设备进行免授权解调，以进行上行免授权同时接入网络。
本实施例提供的网络接入装置设置为实现图4所示实施例的网络接入方法，本实施例提供的网络接入装置实现原理和技术效果类似，此处不再赘述。
在一实施例中，应用于用户设备的网络接入装置，还包括：
第四确定模块，配置为基于网络切片，根据业务应用特征确定网络时延要求和可靠性要求；
第三发送器，配置为将网络时延要求和可靠性要求发送至基站；
第二接收器，配置为接收基站发送的按照网络时延要求和可靠性要求选择的频谱资源集；
第五确定模块，配置为将频谱资源集中的频谱资源作为上行资源。
在一实施例中，图10是本申请实施例提供的一种网络接入设备的结构示意图。如图10所示，本申请提供的设备，包括：处理器1010、存储器1020和通信模块1030。该设备中处理器1010的数量可以是一个或者多个，图10中以一个处理器1010为例。该设备中存储器1020的数量可以是一个或者多个，图10中以一个存储器1020为例。该设备的处理器1010、存储器1020和通信模块1030可以通过总线或者其他方式连接，图10中以通过总线连接为例。在该实施例中，该设备为可以为基站。
存储器1020作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请任意实施例的设备对应的程序指令/模块(例如，网络接入装置中的第一确定模块810、第二确定模块820、第三确定模块830和第一发送器840)。存储器1020可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据设备的使用所创建的数据等。此外，存储器1020可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器1020可进一步包括相对于处理器1010远程设置的存储器，这些远程存储器可以通过网络连接至设备。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
通信模块1030，配置为在基站和用户设备之间进行通信交互。
在网络接入设备为基站的情况下，上述提供的设备可设置为执行上述任意实施例提供的应用于基站的网络接入方法，具备相应的功能和效果。
在网络接入设备为用户设备的情况下，上述提供的设备可设置为执行上述任意实施例提供的应用于用户设备的网络接入方法，具备相应的功能和效果。
本申请实施例还提供一种包含计算机可执行指令的存储介质，计算机可执行指令在由计算机处理器执行时用于执行一种应用于基站的网络接入方法，该方法包括：确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性；根据无线信道相关性确定两个用户设备的功率控制策略；根据功率控制策略和无线信道相关性确定用户设备的免授权解调方式；将免授权解调方式发送至用户设备，以使用户设备进行免授权解调，并进行上行免授权同时接入网络。
本申请实施例还提供一种包含计算机可执行指令的存储介质，计算机可执行指令在由计算机处理器执行时用于执行一种应用于用户设备的网络接入方法，该方法包括：接收基站发送的免授权解调方式；按照免授权解调方式对用户设备进行免授权解调，以进行上行免授权同时接入网络。
本申请实施例的技术方案，通过确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性；根据无线信道相关性确定两个用户设备的功率控制策略；根据功率控制策略和无线信道相关性确定用户设备的免授权解调方式；将免授权解调方式发送至用户设备，以使用户设备进行免授权解调，并进行上行免授权同时接入网络。本实施例的技术方案，通过多用户设备复用免授权和上行功率控制相结合，使得用户设备进行免授权解调，实现了多用户设备进行上行免授权同时接入网络的技术效果。
本领域内的技术人员应明白，术语用户设备涵盖任何适合类型的无线用户设备，例如移动电话、便携数据处理装置、便携网络浏览器或车载移动台。
一般来说，本申请的多种实施例可以在硬件或专用电路、软件、逻辑或其任何组合中实现。例如，一些方面可以被实现在硬件中，而其它方面可以被实现在可以被控制器、微处理器或其它计算装置执行的固件或软件中，尽管本申请不限于此。
本申请的实施例可以通过移动装置的数据处理器执行计算机程序指令来实现，例如在处理器实体中，或者通过硬件，或者通过软件和硬件的组合。计算机程序指令可以是汇编指令、指令集架构(Instruction Set Architecture，ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。
本申请附图中的任何逻辑流程的框图可以表示程序步骤，或者可以表示相互连接的逻辑电路、模块和功能，或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现，例如但不限于只读存储器(Read-Only Memory，ROM)、随机访问存储器(Random Access Memory，RAM)、光存储器装置和系统(数码多功能光碟(Digital Video Disc，DVD)或光盘(Compact Disk，CD))等。计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型，例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processing，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑器件(Field-Programmable  Gate Array，FGPA)以及基于多核处理器架构的处理器。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (13)

  1. 一种网络接入方法，应用于基站，所述方法包括：
    确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性；
    根据所述无线信道相关性确定两个用户设备的功率控制策略；
    根据所述功率控制策略和所述无线信道相关性确定所述用户设备的免授权解调方式；以及
    将所述免授权解调方式发送至所述用户设备，以使所述用户设备进行免授权解调，并进行上行免授权同时接入网络。
  2. 根据权利要求1所述的方法，其中，在用户设备上行初始接入基站时，所述确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性，包括：
    根据用户设备在接入阶段物理随机接入信道PRACH的接收功率确定两个用户设备的接收功率；以及
    根据PRACH信道的前导序列确定两个用户设备之间的无线信道相关性。
  3. 根据权利要求1所述的方法，其中，在用户设备接入物理上行共享信道PUSCH信道之后，所述确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性，包括：
    根据正交导频确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性。
  4. 根据权利要求1所述的方法，其中，所述根据所述无线信道相关性确定功率控制策略，包括：
    在所述无线信道相关性大的情况下，按照串行干扰消除SIC解调方式调整上行发射功率，将所述用户设备工作在SIC最佳解调区间；以及
    在所述无线信道相关性小的情况下，将所述用户设备工作在联合均衡最佳信号与干扰加噪声比SINR区间。
  5. 根据权利要求1所述的方法，其中，所述根据所述功率控制策略和所述无线信道相关性确定用户设备的免授权解调方式，包括：
    在所述无线信道相关性大，且两个用户设备之间的接收功率差值在第一预设功率偏差范围内的情况下，所述用户设备的免授权解调方式为串行干扰消除解调；以及
    在所述无线信道相关性小，且两个用户设备之间的接收功率差值为第二预设功率偏差范围内的情况下，所述用户设备的免授权解调方式为联合均衡解调。
  6. 根据权利要求1所述的方法，在所述确定两个用户设备的接收功率和两个用户设备之间的无线信道相关性之前，还包括：
    将用户设备所在小区的频谱资源划分成至少两个频谱资源集；
    根据接收到的用户设备的网络时延要求和可靠性要求选择对应的频谱资源集；以及
    将所述频谱资源集中的频谱资源发送至用户设备，以使用户设备将所述频谱资源作为上行资源。
  7. 根据权利要求6所述的方法，其中，所述根据接收到的用户设备的网络时延要求和可靠性要求选择对应的频谱资源集，包括：
    对于低时延高可靠性的用户设备，选择第一频谱资源集；以及
    对于低时延低可靠性的用户设备，选择第二频谱资源集。
  8. 根据权利要求7所述的方法，其中，对于低时延低可靠性的用户设备，所述用户设备的解调参考信号DM RS正交，且优先频分。
  9. 根据权利要求7所述的方法，其中，对于低时延低可靠性的用户设备，所述用户设备的导频序列占用第二频谱资源集中的频谱资源为第一个正交频分复用OFDM符号的所有资源单元RE。
  10. 一种网络接入方法，应用于用户设备，所述方法包括：
    接收基站发送的免授权解调方式；以及
    按照所述免授权解调方式对所述用户设备进行免授权解调，以进行上行免授权同时接入网络。
  11. 根据权利要求10所述的方法，在所述接收基站发送的免授权解调方式之前，还包括：
    基于网络切片，根据业务应用特征确定网络时延要求和可靠性要求；
    将所述网络时延要求和可靠性要求发送至基站；
    接收基站发送的按照所述网络时延要求和可靠性要求选择的频谱资源集；以及
    将所述频谱资源集中的频谱资源作为上行资源。
  12. 一种网络接入设备，包括通信模块、存储器以及一个或多个处理器，其中：
    所述通信模块，配置为在基站和用户设备之间进行通信交互；
    所述存储器，配置为存储一个或多个程序；以及
    当所述一个或多个程序被所述一个或多个处理器执行，使得所述一个或多个处理器实现如上述权利要求1-9或10-11中任一项所述的方法。
  13. 一种存储介质，存储有计算机程序，其中，所述计算机程序被处理器执行时实现如上述权利要求1-9或10-11中任一项所述的方法。
PCT/CN2021/138881 2021-06-23 2021-12-16 网络接入方法、设备和存储介质 WO2022267389A1 (zh)

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