WO2017113085A1 - 用于随机接入的方法和装置 - Google Patents
用于随机接入的方法和装置 Download PDFInfo
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- WO2017113085A1 WO2017113085A1 PCT/CN2015/099365 CN2015099365W WO2017113085A1 WO 2017113085 A1 WO2017113085 A1 WO 2017113085A1 CN 2015099365 W CN2015099365 W CN 2015099365W WO 2017113085 A1 WO2017113085 A1 WO 2017113085A1
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- random access
- terminal device
- access resource
- uplink transmission
- network device
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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
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
Definitions
- Embodiments of the present invention relate to the field of communications, and more particularly, to a method and apparatus for random access in the field of communications.
- Random access is a process of establishing a wireless link between a terminal device and a network. Through random access, the terminal device and the network device obtain uplink synchronization. After the random access process is completed, the network device and the terminal device can perform regular data transmission.
- the main purposes of the random access procedure are: 1) obtaining uplink synchronization for the terminal device; 2) the network device assigning a unique identifier to the terminal device to facilitate cell scheduling.
- the terminal device may request uplink data scheduling from the network device during the random access process, and the network device may schedule the terminal device to the appropriate time according to the data transmission type and the cache data size reported by the terminal device in the random access request.
- the uplink data is sent on the frequency resource.
- the network device allocates uplink resources to the terminal device by default, regardless of the uplink transmission capability of the terminal device, and the default resource allocation tends to be conservative, and the transmission efficiency is relatively high. low. If the uplink transmission capability of the terminal device is considered, the network device needs to report its uplink transmission capability when the uplink resource is allocated. This requires a corresponding signaling overhead, which wastes time and affects the user experience.
- the embodiments of the present invention provide a method and an apparatus for random access, which solves the problem that a signaling requirement of a terminal device needs to report its uplink transmission capability to a network device in a random access process.
- the problem a signaling requirement of a terminal device needs to report its uplink transmission capability to a network device in a random access process.
- a method for random access comprising:
- the network device divides the available random access resources into multiple random access resource groups, where the multiple random access resource groups correspond to different uplink transmission capabilities, where the uplink transmission capability includes carrier support capability and uplink subcarrier transmission bandwidth. At least one of the carrier support capabilities is used to indicate whether multi-carrier transmission is supported;
- the network device randomly accesses the resource group according to the target, and determines an uplink transmission capability of the terminal device.
- the network device divides the available random access resources into multiple random access resource packets according to different uplink transmission capabilities, and groups the multiple random access resources into packets.
- the device is sent to the terminal device, so that the network device can learn the uplink transmission capability of the terminal device according to the random access resource used by the random access request sent by the terminal device, and does not need to report the additional device, thereby saving signaling overhead and improving user experience.
- the network device divides the available random access resources into N random access resource packets according to multiple uplink transmission capabilities.
- the N random access resource packets may have a one-to-one correspondence with different uplink transmission capabilities, that is, the N random access resource packets have a one-to-one correspondence with the N types of uplink transmission capabilities.
- the N random access resource packets may have a many-to-one relationship with different transmission capabilities, that is, one uplink transmission capability may correspond to multiple random access resource packets.
- At least the first random access resource group and the second random access resource group are present in the N random access resource groups, where the first random access resource group and the second random access resource group correspond to different Uplink transmission capability.
- the network device sends the information of the multiple random access resource group to the terminal device, including:
- the network device broadcasts information of the plurality of random access resource packets in a broadcast message. At this time, the network device sends the information of the plurality of random access resource groups to the terminal device in a broadcast form.
- the multiple random access resource packets correspond to different uplink transmission capabilities, including:
- the plurality of random access resource packets are in one-to-one correspondence with the plurality of combinations, and each of the plurality of combinations is composed of the uplink transmission capability and the coverage level.
- the network device divides the available random access resources into multiple random access resource groups according to multiple uplink transmission capabilities and multiple coverage levels. Any two of the plurality of random access resource packets may correspond to the same uplink transmission capability and different The coverage level corresponds to different uplink transmission capabilities and the same coverage level, or corresponds to different uplink transmission capabilities and different coverage levels.
- the network device determines, according to the target random access resource group, the matching with the target random access resource group After the uplink transmission capability of the terminal device, the method further includes:
- the network device schedules the terminal device according to the uplink transmission capability of the terminal device.
- the network device can determine the transmission mode of transmitting the uplink data according to the uplink transmission capability of the terminal device, and schedule the terminal device, thereby improving the transmission efficiency of the system, thereby improving the user experience.
- the network device according to the uplink transmission capability of the terminal device, scheduling the terminal device, including:
- the network device schedules the terminal device according to the uplink transmission capability of the terminal device and the current uplink resource usage.
- the network device schedules the terminal device according to the uplink transmission capability of the terminal device and the current uplink resource usage situation, include:
- the network device sends scheduling information to the terminal device, where The scheduling information is used to indicate that the terminal device uses single carrier transmission.
- the random access resource includes at least one of a random access preamble sequence, a time resource, and a frequency resource.
- the terminal device receives information of multiple random access resource packets sent by the network device, where the multiple random access resource packets correspond to different uplink transmission capabilities, where the uplink transmission capability includes at least one of a carrier support capability and an uplink subcarrier transmission bandwidth.
- the carrier support capability is used to indicate whether multi-carrier transmission is supported;
- the terminal device determines, according to the uplink transmission capability of the terminal device and the information of the plurality of random access resource groups, the uplink transmission energy from the plurality of random access resource groups Force matched target random access resource grouping;
- the terminal device sends a random access request to the network device by using the random access resource in the target random access resource group, where the random access request is used to request access to the network device.
- the target random access resource packet corresponding to the random access resource can be used to indicate the uplink transmission capability of the terminal device.
- the terminal device receives information about multiple random access resource groups sent by the network device, including:
- the terminal device acquires information of multiple random access resource groups broadcast by the network device from the broadcast message.
- the terminal device according to the uplink transmission capability of the terminal device and the information of the multiple random access resource group, Determining a target random access resource group in the plurality of random access resource groups, including:
- the terminal device determines a target random access resource group from the plurality of random access resource groups according to the uplink transmission capability, the coverage level, and the information of the plurality of random access resource groups of the terminal device.
- the method further includes:
- the terminal device receives scheduling information sent by the network device, The scheduling information is used to indicate that the terminal device uses single carrier transmission.
- the random access resource includes at least one of a random access preamble sequence, a time resource, and a frequency resource.
- an apparatus for random access for performing the method of any of the first aspect or the first aspect of the first aspect.
- the apparatus comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
- an apparatus for random access for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.
- the apparatus comprises means for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.
- an apparatus for random access comprising: a receiver, a transmitter, a memory, a processor, and a bus system.
- the receiver, the transmitter, the memory and the processor are connected by the bus system, the memory is for storing instructions for executing the instructions stored by the memory to control the receiver to receive signals and control the sending
- the transmitter transmits a signal, and when the processor executes the memory stored instructions, the execution causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.
- an apparatus for random access comprising: a receiver, a transmitter, a memory, a processor, and a bus system.
- the receiver, the transmitter, the memory and the processor are connected by the bus system, the memory is for storing instructions for executing the instructions stored by the memory to control the receiver to receive signals and control the sending
- the transmitter transmits a signal, and when the processor executes the memory stored instructions, the execution causes the processor to perform the method of any of the second aspect or any of the possible implementations of the second aspect.
- a seventh aspect a computer readable medium for storing a computer program, the computer program comprising instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
- a computer readable medium for storing a computer program comprising instructions for performing the method of the second aspect or any of the possible implementations of the second aspect.
- FIG. 1 is a schematic diagram of a communication system to which an embodiment of the present invention is applied.
- FIG. 2 is a schematic flowchart of a method for random access provided by an embodiment of the present invention.
- FIG. 3 is a schematic flowchart of another method for random access according to an embodiment of the present invention.
- FIG. 4 is a schematic block diagram of an apparatus for random access provided by an embodiment of the present invention.
- FIG. 5 is a schematic block diagram of another apparatus for random access according to an embodiment of the present invention.
- FIG. 6 is a schematic block diagram of another apparatus for random access according to an embodiment of the present invention.
- FIG. 7 is a schematic block diagram of another apparatus for random access according to an embodiment of the present invention.
- FIG. 8 is a schematic block diagram of another apparatus for random access according to an embodiment of the present invention.
- GSM Global System of Mobile communication
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- Universal Mobile Telecommunication System Universal Mobile Telecommunication System
- UMTS Universal Mobile Telecommunication System
- WiMAX Worldwide Interoperability for Microwave Access
- FIG. 1 shows a communication system 100 to which an embodiment of the present invention is applied.
- the communication system 100 can include at least one network device 110.
- Network device 100 may be a device that communicates with a terminal device, such as a base station or base station controller or the like.
- Each network device 100 can provide communication coverage for a particular geographic area and can communicate with terminal devices (e.g., UEs) located within the coverage area (cell).
- terminal devices e.g., UEs
- the network device 100 may be a base station (Base Transceiver Station, abbreviated as "BTS”) in a GSM system or a Code Division Multiple Access (“CDMA”) system, or may be a base station in a WCDMA system (
- the NodeB (abbreviated as “NB") may also be an evolved base station (Evolutional Node B, referred to as “eNB” or “eNodeB”) in the LTE system, or a Cloud Radio Access Network (Cloud Radio Access Network, referred to as
- the wireless controller in "CRAN” or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, a network side device in a future 5G network, or a future evolved public land mobile network (Public Land Mobile Network) Network devices in the "PLMN" for short.
- PLMN Public Land Mobile Network
- the communication system 100 may be a cellular internet of things (Cellular IoT, referred to as "CIoT"), which is an important type of machine based on the existing cellular network infrastructure.
- Machine Type Communication MTC
- the main business areas of future IoT communications may include smart meter reading, medical detection and monitoring, logistics detection, industrial inspection and monitoring, automotive networking, smart communities, and wearable device communication.
- the Internet of Things industry built around MTC communication is considered to be the fourth wave of the information industry after the computer, Internet and mobile communication networks, and is the future development direction of the network.
- the CIoT system has large coverage, high connectivity, low cost and low power consumption for networks and end devices.
- the wireless communication system 100 also includes a plurality of terminal devices 120 located within the coverage of the network device 110.
- the terminal device 120 can be mobile or fixed.
- the terminal device 120 can refer to an access terminal, a user equipment (User Equipment, abbreviated as "UE"), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless device.
- Communication device User agent or user device.
- the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol ("SSIP”) phone, a Wireless Local Loop (WLL) station, and a personal digital processing (Personal Digital) Assistant, referred to as "PDA"), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a future evolving public land mobile A terminal device or the like in a network (Public Land Mobile Network, abbreviated as "PLMN").
- PLMN Public Land Mobile Network
- FIG. 1 exemplarily shows one network device and two terminal devices.
- the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, the present invention The embodiment does not limit this.
- the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, and the like, and the embodiment of the present invention is not limited thereto.
- network entities such as a network controller, a mobility management entity, and the like, and the embodiment of the present invention is not limited thereto.
- the terminal device Before the terminal device transmits the uplink data to the network device, the terminal device needs to establish a connection with the cell through the random access procedure (Random Access Procedure) and obtain uplink synchronization. Only when the uplink synchronization is obtained, the terminal device can perform uplink data transmission.
- the main purpose of the random access procedure is: 1) the terminal device acquires uplink synchronization; 2) the network device allocates a unique identifier to the terminal device to facilitate cell scheduling.
- the terminal device may request uplink data scheduling from the network device during the random access process, and the network device may schedule the terminal device to the appropriate time according to the data transmission type and the cache data size reported by the terminal device in the random access request. Send data on the frequency resource.
- the embodiments of the present invention relate to a process in which a terminal device randomly accesses a network device.
- FIG. 2 shows a method 200 for random access provided by an embodiment of the present invention.
- the method 200 It can be applied to the communication system 100 shown in FIG. 1, but the embodiment of the present invention is not limited thereto.
- the network device divides the available random access resources into multiple random access resource groups, where the multiple random access resource groups correspond to different uplink transmission capabilities, where the uplink transmission capability includes carrier support capability and uplink subcarrier transmission bandwidth. At least one of the carrier support capabilities is used to indicate whether multi-carrier transmission is supported, also called carrier aggregation.
- the uplink transmission capability may be only the carrier support capability, or may be only the uplink subcarrier transmission bandwidth, and may also include the carrier support capability and the uplink subcarrier transmission bandwidth, which is not limited in this embodiment of the present invention.
- the carrier support capability indicates whether multi-carrier transmission is supported, and specifically refers to the capability of the terminal device to support the number of consecutively transmitted carriers in the process of transmitting uplink data to the network device.
- the network device may group the available random access resources according to single carrier and multi-carrier, or may group the available random access resources according to the number of carriers supporting simultaneous transmission, for example, one, two, four, and the like.
- the uplink subcarrier transmission bandwidth indicates the bandwidth of the subcarriers supported by the terminal device when transmitting the uplink data to the network device.
- the uplink subcarrier transmission bandwidth may be divided into a broadband subcarrier and a narrowband subcarrier, where the broadband subcarrier is Refers to the subcarrier width supporting transmission in the LTE communication system, that is, 15 kHz, and the narrowband subcarrier refers to a subcarrier having a width of half or less of 15 kHz of the subcarrier in the LTE system, for example, a bandwidth of 7.5 kHz, 3.75 kHz, 2.5 kHz. Subcarriers and so on.
- the minimum bandwidth of the uplink and downlink systems is 200 kHz.
- the system supports subcarriers with a bandwidth of 15 kHz to be multiplexed in the frequency domain.
- the network device can transmit data to the terminal device using a single carrier (ie, a 15 kHz carrier), or can use multiple carriers (ie, multiple consecutive 15 kHz carriers). Send data to the terminal device.
- the NB-IoT system supports two subcarriers with a bandwidth of 3.75 kHz and 15 kHz, a 3.75 kHz carrier is a narrowband subcarrier, and a 15 kHz carrier is a broadband subcarrier.
- a 3.75 kHz carrier is used, the terminal device only supports single-carrier transmission, that is, the terminal device can only transmit one 3.75 kHz carrier signal at the same time; when using a 15 kHz carrier, the terminal device can support single-carrier transmission or multi-carrier transmission. .
- the terminal device supports both the 3.75 kHz and 15 kHz subcarrier bandwidths mainly for the following considerations.
- the bandwidth of the 3.75 kHz carrier is only 1/4 of the 15 kHz carrier bandwidth, so the power spectral density of the transmitted signal is 4 times that of the 15 kHz carrier, with better anti-jamming and anti-path loss performance, so the 3.75 kHz carrier is more suitable for poorly covered terminal equipment, such as Cell edge or even Terminal equipment in the lower room.
- the bandwidth of the 3.75 kHz carrier is only 1/4 of the carrier bandwidth of 15 kHz
- the time required for 3.75 kHz single carrier transmission is almost four times that of the single carrier of 15 kHz, so the terminal using the 3.75 kHz carrier is used.
- the time required for the device to transmit data is much greater than the time at which the terminal device using the 15 kHz carrier transmits data, and the terminal device using the 3.75 kHz carrier consumes more power.
- different uplink transmission capabilities and different random access resource packets may have a one-to-one relationship or a one-to-many relationship. That is, multiple different uplink transmission capabilities may correspond to multiple different random access resource packets, and one uplink transmission capability may correspond to one random access resource packet, or may correspond to multiple random access resource packets, for example, one uplink transmission capability.
- N random access resource packets where N is an integer, then when N is greater than or equal to 2, at least a first random access resource packet and a second random access resource packet exist in the N random access resource packets,
- the uplink transmission capability corresponding to the first random access resource group and the second random access resource group may be the same or different. This embodiment of the present invention does not limit this.
- the multiple random access resource groups correspond to different uplink transmission capabilities, including:
- the plurality of random access resource packets are in one-to-one correspondence with the plurality of combinations, and each of the plurality of combinations is composed of the uplink transmission capability and the coverage level.
- the manner of grouping according to the coverage level is added.
- the scheduling policies of the network devices will be completely different.
- a terminal device at a central location of a cell has good wireless channel conditions, and a network device can establish a reliable downlink using a small power, and can use a large transmission code block, high-order modulation, carrier binding, and the like.
- the data transmission is completed quickly; for the terminal equipment at the edge of the cell or the basement, the quality of the wireless channel is poor, the network equipment may need to use a large power to maintain the link, and a small code block is needed in the process of transmitting data.
- Techniques such as low-order modulation, multiple repetition transmission, and spread spectrum can complete data transmission.
- the terminal devices of different channel conditions need to be distinguished to facilitate the scheduling of the network device, so the concept of coverage level is introduced.
- the channel transmission conditions of the terminal devices at the same coverage level are similar.
- the network device can adopt similar scheduling parameters for such terminal devices, and the control signaling overhead they occupy is similar.
- a coverage level corresponds to a certain channel condition or signal condition. For example, in the CIoT system, it can be divided into three coverage levels, and the coverage level of the terminal equipment that is closer to the network device is “ordinary.
- the terminal device can select the appropriate number of transmissions according to the coverage level to reduce unnecessary duplication and reduce power overhead.
- the network device may divide the available random access resources into multiple random access resource groups according to different uplink transmission capabilities and different coverage levels. That is, the network device may group the available random access resources according to the carrier support capability and the coverage level, or may group the available random access resources according to the uplink subcarrier transmission bandwidth and the coverage level, or may be based on the carrier support capability, The uplink subcarrier transmission bandwidth and coverage level group available available random access resources. In addition, the network device may further group the available random access resources according to other characteristics, which is not limited in this embodiment of the present invention.
- the network device divides the available random access resources into a plurality of random access resource packets according to multiple uplink transmission capabilities and coverage capabilities. Any two of the plurality of random access resource groups may correspond to the same uplink transmission capability and different coverage levels, or correspond to different uplink transmission capabilities and the same coverage level, or correspond to Different uplink transmission capabilities and different coverage levels.
- the coverage level can be derived by the terminal device estimating its own signal or signal condition. Optionally, the coverage level can be reported by the terminal device to the network device. Or after the terminal device estimates its own signal or signal condition, the relevant estimation result is reported to the network device and the network device calculates the coverage level based on the result and transmits the coverage level to the terminal device.
- the random access resource includes at least one of a random access preamble sequence, a time resource for performing random access, and a frequency resource for performing random access.
- the random access preamble sequence may be a cyclically shifted Zadoff-Chu (ZC) sequence, and the ZC sequence has a constant envelope and a phase continuous
- ZC Zadoff-Chu
- the random access preamble sequence can be obtained by scrambling a Hadamard sequence. This embodiment of the present invention does not limit this.
- the network device sends the information of the multiple random access resource groups to the terminal device.
- the network device After the network device divides the available random access resources into multiple random access resource groups, the network device sends the information of the multiple random access resource groups to the terminal device. It should be understood that the network device may send the information of the multiple random access resource groups to one terminal device, and may also send the information of the multiple random access resource groups to multiple terminal devices, which is not performed by the embodiment of the present invention. limited.
- the information that the network device sends the multiple random access resource groups to the terminal device includes:
- the network device broadcasts information of the plurality of random access resource packets in a broadcast message.
- the network device sends the information of the multiple random access resource groups to the terminal device in a broadcast manner, so that the terminal devices in the coverage of the network device can obtain the multiple random access resource groups. Information.
- the terminal device receives information about multiple random access resource groups sent by the network device, and according to the uplink transmission capability of the network and the information of the multiple random access resource groups, from the multiple random access resource groups. Determine the target random access resource grouping.
- the terminal device directly receives information of the multiple random access resource groups; if the network device broadcasts the multiple in a broadcast message
- the information of the random access resource group is that the terminal device that randomly accesses the network device needs to read the broadcast message and obtain the information of the multiple random access resource group.
- the terminal device may determine the target random access resource group from the plurality of random access resource groups according to its own uplink transmission capability. For example, if the terminal device supports single-carrier transmission, the carrier support capability corresponding to the target random access resource group determined by the terminal device is single-carrier transmission; if the terminal device supports 15 kHz multi-carrier, the terminal device determines the random The carrier support capability corresponding to the access resource group is multi-carrier transmission, and the corresponding sub-carrier transmission bandwidth is 15 kHz.
- the terminal device determines the target random access resource group from the plurality of random access resource groups according to the uplink transmission capability and the information of the multiple random access resource groups, including:
- the terminal device determines the target random access resource group from the plurality of random access resource groups according to the uplink transmission capability, the coverage level, and the information of the plurality of random access resource groups.
- the terminal device may be based on its uplink transmission capability and coverage level. Determining a target random access resource packet from the plurality of random access resource packets.
- the terminal device determines a target random access resource packet according to its carrier support capability and coverage level; if the network device is based on uplink subcarriers Sending belt The wide and coverage levels group the available random access resources, and the terminal device determines the target random access resource group according to the uplink subcarrier transmission bandwidth and the coverage level; if the network device transmits the bandwidth according to the carrier support capability and the uplink subcarrier. And the coverage level groups the available random access resources, and the terminal device determines the target random access resource group according to its carrier support capability, uplink subcarrier transmission bandwidth, and coverage level.
- the coverage level may be determined when the terminal device is deployed, or may be obtained by the terminal device by measuring the downlink channel quality of the cell.
- the terminal device may measure the synchronization signal of the cell, including the primary synchronization signal (Primary). Synchronization Signal (referred to as "PSS"), Secondary Synchronization Signal (SSS), Physical Broadcast Channel (PBCH), and Cell-specific reference Signals, referred to as "CRS”, etc.
- PSS Synchronization Signal
- SSS Secondary Synchronization Signal
- PBCH Physical Broadcast Channel
- CRS Cell-specific reference Signals
- S240 The terminal device sends a random access request to the network device by using a random access resource in the target random access resource group, where the random access request is used to request access to the network device.
- the terminal device may use the random access resource in the target random access resource group to send a random access request to the network device, requesting access to the network device.
- the network device receives a random access request sent by the terminal device, and determines a target random access resource group where the random access resource used by the random access request is located, where the multiple random access resource group includes the target Random access resource grouping.
- the network device randomly accesses the resource group according to the target, and determines an uplink transmission capability of the terminal device.
- the network device allocates uplink resources to the terminal device by default in the case of not considering the capability of the terminal device, and the default resource allocation tends to be conservative, and the transmission efficiency is low. If the network device allocates uplink resources, the network device needs to report its own capabilities, which requires corresponding signaling overhead, which wastes time and affects the user experience.
- the available random access resources are divided into multiple random access resource groups according to different carrier support capabilities by the network device, and sent to the terminal.
- the terminal device determines a target random access resource group from a plurality of random access resource groups according to its own carrier support capability, and sends a random connection to the network device by using the random access resource in the target random access resource group
- the incoming request solves the problem that the signaling overhead caused by the terminal device needs to report its own capability to the network device in the random access process, so that the network device can randomly connect according to the random access request sent by the terminal device.
- Incoming resources to learn the capabilities of the terminal device does not require additional reporting by the terminal device, thereby saving signaling overhead and improving the user experience.
- the method further includes:
- the network device schedules the terminal device according to the uplink transmission capability of the terminal device.
- the network device may receive a random access request sent by the terminal device, and according to the random access request, determine a target random access resource group where the random access resource is located, and the network device randomly accesses the resource according to the target.
- the packet can determine the uplink transmission capability of the terminal device, and then the network device schedules the terminal device according to the uplink transmission capability of the terminal device.
- the scheduling includes performing resource allocation or control on the terminal device.
- the target random access resource packet may be determined by the terminal device according to its own uplink transmission capability;
- the information of the plurality of random access resource packets is obtained by the network device according to different uplink transmission capabilities and different coverage levels, and the target random access resource packet may be the terminal device according to its uplink transmission capability and coverage level.
- the embodiment of the present invention may be that the network device randomly selects a resource group according to the target, determines an uplink transmission capability of the terminal device, and then schedules the terminal device according to an uplink transmission capability of the terminal device; or the network device may be configured according to the network device.
- the target randomly accesses the resource group, determines the uplink transmission capability and the coverage level of the terminal device, and then schedules the terminal device according to the uplink transmission capability and the coverage level of the terminal device. This embodiment of the present invention does not limit this.
- the network device schedules the terminal device according to the uplink transmission capability of the terminal device, including:
- the network device schedules the terminal device according to the uplink transmission capability of the terminal device and the current uplink resource usage.
- the network device may schedule the terminal device according to the uplink transmission capability of the terminal device and the current uplink resource usage.
- the carrier support capability of the terminal device may not match the current resource usage, for example, if the cell currently has more
- the terminal device performs uplink data transmission, resulting in a lack of available uplink resources, which is insufficient to meet the carrier support capability of the terminal device, and the terminal device can schedule the terminal device according to the current resource usage.
- the network device finds that the available uplink resources of the cell are lacking, and when multiple carriers cannot be scheduled for the uplink transmission of the terminal device, the network device may schedule the terminal device to perform 15 kHz. Single carrier transmission, even scheduling single carrier transmission of 3.75 kHz. However, if the carrier support capability of the terminal device indicates that only single carrier transmission is supported, the network device should not schedule the terminal device for multi-carrier transmission.
- the foregoing current uplink resource may include at least one of a time resource, a frequency resource, and an orthogonal code division resource, which is not limited by the embodiment of the present invention.
- the network device schedules the terminal device according to the uplink transmission capability of the terminal device and the current uplink resource usage, including:
- the network device sends scheduling information to the terminal device, where The scheduling information is used to indicate that the terminal device uses single carrier transmission.
- the terminal device receives the scheduling information.
- the uplink can support two subcarrier, single carrier and multicarrier transmission modes with bandwidths of 3.75 kHz and 15 kHz, but the existing method does not show how to determine the subcarrier transmission during the uplink transmission.
- the method of bandwidth and transmission mode does not indicate which side of the network device and the terminal device should be determined, which will seriously affect the transmission efficiency of the uplink data.
- the random access method is used, and the network device first divides the available random access resources into multiple random access resource groups according to different uplink transmission capabilities, and sends information of multiple random access resource groups to the network packet.
- the terminal device determines a target random access resource group corresponding to its own uplink transmission capability from information of multiple random access resource groups, and the terminal device adopts random in the target random access resource group
- the access resource sends a random access request to the network device, so that the network device can schedule the terminal device according to the actual transmission capability of the terminal device, and the terminal device can perform uplink data according to the uplink transmission capability of the terminal device. transmission.
- the method for random access in the embodiment of the present invention divides available random access resources into multiple random access resource groups according to different uplink transmission capabilities by the network device, and sends the packets to the random access resource group.
- a terminal device which determines a target random access resource group from a plurality of random access resource groups according to its own uplink transmission capability, and uses the random access resource in the target random access resource group to send a random to the network device
- the access request the network device can determine the random access resource used by the random access request, thereby determining the uplink transmission capability of the terminal device, and scheduling the terminal device according to the uplink transmission capability of the terminal device,
- the terminal device reports its own capability, saves signaling overhead, and solves the problem that the transmission mode of the terminal device cannot be determined in the uplink transmission.
- the terminal device can transmit uplink data according to its own capabilities, thereby improving the transmission efficiency of the system, thereby improving user experience.
- FIG. 3 is a schematic flowchart of a method 300 for random access provided by an embodiment of the present invention.
- the network device divides the available random access resources into multiple random access resource groups according to the coverage level, the uplink subcarrier transmission bandwidth, and the carrier support capability, where the random access resource is a ZC sequence;
- the grouping can be performed as follows:
- the coverage levels here include normal coverage, extended coverage, and limit coverage.
- the subcarrier support bandwidth includes 3.75 kHz and 15 kHz, and the carrier support capability includes single carrier and multiple carrier.
- the network device broadcasts information of the multiple random access resource groups in a broadcast message
- the terminal device acquires information of the multiple random access resource groups from the broadcast message, and according to its own coverage level, uplink subcarrier transmission bandwidth, and carrier support capability, Determining a target random access resource group in the plurality of random access resource groups;
- the target random access resource group determined by the terminal device For the above e group.
- the terminal device sends a random access request to the network device by using the random access resource in the target random access resource group, to request access to the network device;
- the terminal device randomly selects a sequence 130 from the e group as the current random access transmission sequence, and transmits the sequence 130 to the random access designated time frequency resource, that is, sends the random access request carrying the sequence 130. .
- the network device receives the random access request, and determines a target random access resource group in which the random access resource used by the random access request is located;
- the network device randomly determines a coverage level, an uplink subcarrier transmission bandwidth, and a carrier support capability of the terminal device according to the target random access resource group;
- the network device receives the random access request of the carrying sequence 130 sent by the terminal device on the specified time resource and frequency resource of the random access, and if the network device correctly receives and decodes the acquired sequence 130, the network device The network device may determine the target random access resource group determined by the terminal device according to the sequence 130, and then the network device acquires the coverage level, the subcarrier support bandwidth, and the carrier support capability of the terminal device, where the network device It is also possible to obtain information such as the current access type, the number of uplink buffers, and the like of the terminal device from the random access request.
- the network device sends a random access response message to the terminal device, where the random access response message carries scheduling information, where the scheduling information is used according to the coverage level of the terminal device, the uplink subcarrier transmission bandwidth, and the carrier support. The ability to schedule the terminal device.
- the terminal device may send a random access response message to the terminal device, where the random access response message carries the scheduling information.
- the terminal device uses the 3.75 kHz single carrier to perform uplink data transmission according to the scheduling information.
- the network device divides the available random access resources into multiple random access resource groups according to different uplink transmission capabilities and different coverage levels, and sends the information to the terminal device.
- the terminal device is based on its own carrier support capability and coverage level. Determining a target random access resource group in the plurality of random access resource groups, and using the random access resource in the target random access resource group to send a random access request to the network device, the network device may determine the random access
- the random access resource used in the request is used to determine the carrier support capability and the coverage level of the terminal device, and the terminal device is scheduled according to the carrier support capability and the coverage level of the terminal device, and the terminal device does not need to report its own capability.
- the signaling overhead is saved, and the problem that the transmission mode of the terminal device cannot be determined in the uplink transmission is solved, and the terminal device can transmit the uplink data according to its own capabilities, thereby improving the transmission efficiency of the system, thereby improving the user experience.
- a method for random access according to an embodiment of the present invention is described in detail above with reference to FIG. 1 to FIG. 3, and a device for random access according to an embodiment of the present invention will be described in detail below with reference to FIG. 4 to FIG. .
- FIG. 4 shows an apparatus 400 for random access provided by an embodiment of the present invention.
- the apparatus 400 includes:
- the grouping unit 410 is configured to divide the available random access resources into multiple random access resource groups, where the multiple random access resource groups correspond to different uplink transmission capabilities, where the uplink transmission capability includes carrier support capability and uplink subcarriers. At least one of a transmission bandwidth used to indicate whether multi-carrier transmission is supported;
- the sending unit 420 is configured to send information about the multiple random access resource groups to the terminal device.
- the receiving unit 430 is configured to receive a random access request sent by the terminal device according to the information of the multiple random access resource groups, where the random access request is used to request access to the device;
- a determining unit 440 configured to determine a target random access resource group in which the random access resource used by the random access request is located, where the multiple random access resource group includes the target random access resource group;
- the determining unit is further configured to: determine, according to the target random access resource group, an uplink transmission capability of the terminal device that matches the target random access resource group.
- the multiple random access resource groups correspond to different uplink transmission capabilities, including:
- the plurality of random access resource packets are in one-to-one correspondence with the plurality of combinations, and each of the plurality of combinations is composed of the uplink transmission capability and the coverage level.
- the apparatus further includes:
- the scheduling unit 450 is configured to: after determining the uplink transmission capability of the terminal device according to the target random access resource group, scheduling the terminal device according to the uplink transmission capability of the terminal device.
- the scheduling unit is specifically configured to:
- the terminal device is scheduled according to the uplink transmission capability of the terminal device and the current uplink resource usage.
- the sending unit is further configured to:
- scheduling information is sent to the terminal device, where the scheduling information is used. Indicates that the terminal device uses single carrier transmission.
- the random access resource includes at least one of a random access preamble sequence, a time resource, and a frequency resource.
- the apparatus 400 herein is embodied in the form of a functional unit.
- the term "unit” herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (eg, a shared processor, a proprietary processor, or a group). Processors, etc.) and memory, merge logic, and/or other suitable components that support the described functionality.
- ASIC application specific integrated circuit
- the device 400 may be specifically the network device in the foregoing embodiment, and the device 400 may be used to perform various processes and/or steps corresponding to the network device in the foregoing method embodiment. To avoid repetition, we will not repeat them here.
- FIG. 6 shows an apparatus 500 for random access provided by an embodiment of the present invention.
- the apparatus 500 includes:
- the receiving unit 510 is configured to receive information about multiple random access resource packets sent by the network device, where the multiple random access resource packets correspond to different uplink transmission capabilities, where the uplink transmission capability includes carrier support capability and uplink subcarrier transmission. At least one of bandwidths, the carrier support capability is used to indicate whether multi-carrier transmission is supported;
- a determining unit 520 configured to determine a target random access resource group from the plurality of random access resource groups according to uplink transmission capability of the device and information of the multiple random access resource groups;
- the sending unit 530 is configured to send a random access request to the network device by using the random access resource in the target random access resource group, where the random access request is used to request access to the network device.
- the multiple random access resource groups are in one-to-one correspondence with the plurality of combinations, and each of the multiple combinations includes the uplink transmission capability and the coverage level, and the determining unit is specifically configured to:
- Determining a target random access resource packet from the plurality of random access resource packets according to uplink transmission capability, coverage level, and information of the plurality of random access resource packets.
- the receiving unit is further configured to:
- the uplink transmission capability of the device indicates that the device can support multi-carrier transmission
- receiving scheduling information sent by the network device the scheduling information is used to indicate The device uses single carrier transmission.
- the random access resource includes at least one of a random access preamble sequence, a time resource, and a frequency resource.
- the apparatus 500 herein is embodied in the form of a functional unit.
- the term "unit” herein may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (eg, a shared processor, a proprietary processor, or a group). Processors, etc.) and memory, merge logic, and/or other suitable components that support the described functionality.
- ASIC application specific integrated circuit
- the device 500 may be specifically the terminal device in the foregoing embodiment, and the device 500 may be used to perform various processes and/or steps corresponding to the terminal device in the foregoing method embodiment. To avoid repetition, we will not repeat them here.
- FIG. 7 shows an apparatus 600 for random access provided by an embodiment of the present invention.
- the apparatus 600 includes a processor 610, a transmitter 620, a receiver 630, a memory 640, and a bus system 650.
- the processor 610, the transmitter 620, the receiver 630, and the memory 640 are connected by a bus system 650 for storing instructions for executing instructions stored in the memory 640 to control the transmitter 620.
- a signal is sent and the receiver 630 is controlled to receive the signal.
- the processor 610 is configured to divide the available random access resources into multiple random access resource groups, where the multiple random access resource groups correspond to different uplink transmission capabilities, where the uplink transmission capability includes carrier support capability and uplink. At least one of subcarrier transmission bandwidths, the carrier support capability is used to indicate whether multicarrier transmission is supported;
- the transmitter 620 is configured to send information of the multiple random access resource groups to the terminal device.
- the receiver 630 is configured to receive a random access request sent by the terminal device according to the information of the multiple random access resource groups, where the random access request is used to request access to the device;
- the processor 610 is further configured to determine a target random access resource group in which the random access resource used by the random access request is located, where the multiple random access resource group includes the target random access resource group;
- the processor 610 is further configured to: determine, according to the target random access resource group, the terminal device Uplink transmission capability.
- the multiple random access resource groups correspond to different uplink transmission capabilities, including:
- the plurality of random access resource packets are in one-to-one correspondence with the plurality of combinations, and each of the plurality of combinations is composed of the uplink transmission capability and the coverage level.
- the transmitter 620 is further configured to: after determining the uplink transmission capability of the terminal device according to the target random access resource group, scheduling the terminal device according to the uplink transmission capability of the terminal device.
- the transmitter 620 is specifically configured to:
- the terminal device is scheduled according to the uplink transmission capability of the terminal device and the current uplink resource usage.
- the transmitter 620 is specifically configured to:
- scheduling information is sent to the terminal device, where the scheduling information is used. Indicates that the terminal device uses single carrier transmission.
- the random access resource includes at least one of a random access preamble sequence, a time resource, and a frequency resource.
- the device 600 may be specifically the network device in the foregoing embodiment, and may be used to perform various steps and/or processes corresponding to the network device in the foregoing method embodiments.
- the memory 640 can include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory.
- the memory can also store information of the device type.
- the processor 630 can be configured to execute instructions stored in a memory, and when the processor executes instructions stored in the memory, the processor is operative to perform various steps and/or processes of the method embodiments described above.
- FIG. 8 shows an apparatus 700 for random access provided by an embodiment of the present invention.
- the apparatus 700 includes a receiver 710, a processor 720, a transmitter 730, a memory 740, and a bus system 750.
- the receiver 710, the processor 720, the transmitter 730 and the memory 740 are connected by a bus system 750 for storing instructions for executing instructions stored in the memory 740 to control the receiver 710.
- a signal is received and the transmitter 730 is controlled to send an instruction.
- the receiver 710 is configured to receive information about multiple random access resource packets sent by the network device, where the multiple random access resource packets correspond to different uplink transmission capabilities, where the uplink transmission capability includes carrier support capability and uplink subframes. At least one of carrier transmission bandwidth, the carrier support capability Used to indicate whether multi-carrier transmission is supported;
- the processor 720 is configured to determine a target random access resource group from the plurality of random access resource groups according to an uplink transmission capability of the device and information of the plurality of random access resource packets;
- the transmitter 730 is configured to send a random access request to the network device by using a random access resource in the target random access resource group, where the random access request is used to request access to the network device.
- the processor 720 is specifically configured to:
- Determining a target random access resource packet from the plurality of random access resource packets according to uplink transmission capability, coverage level, and information of the plurality of random access resource packets.
- the receiver 710 is further configured to:
- the uplink transmission capability of the device indicates that the device can support multi-carrier transmission
- receiving scheduling information sent by the network device the scheduling information is used to indicate The device uses single carrier transmission.
- the random access resource includes at least one of a random access preamble sequence, a time resource, and a frequency resource.
- the device 700 may be specifically the terminal device in the foregoing embodiment, and may be used to perform various steps and/or processes corresponding to the terminal device in the foregoing method embodiments.
- the memory 740 can include read only memory and random access memory and provide instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory.
- the memory can also store information of the device type.
- the processor 720 can be configured to execute instructions stored in a memory, and when the processor executes the instructions, the processor can perform various steps and/or processes corresponding to the terminal devices in the above method embodiments.
- the processor may be a central processing unit (CPU), and the processor may also be other general purpose processors, digital signal processors (DSPs), and application specific integrated circuits (ASICs). ), Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
- the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
- each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
- the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
- the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
- the storage medium is located in the memory, and the processor executes the instructions in the memory, in combination with its hardware to perform the steps of the above method. To avoid repetition, it will not be described in detail here.
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
- the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
- a storage medium includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
- the foregoing storage medium includes: a USB flash drive, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disk or a CD.
- ROM Read-Only Memory
- RAM Random Access Memory
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Abstract
本发明公开了一种用于随机接入的方法和装置。该方法包括:网络设备将可用的随机接入资源分成多个随机接入资源分组;该网络设备向终端设备发送该多个随机接入资源分组的信息;该网络设备接收该终端设备根据该多个随机接入资源发送的随机接入请求;该网络设备确定该随机接入请求所采用的随机接入资源所在的目标随机接入资源分组;该网络设备根据该目标随机接入资源分组,确定该终端设备的上行传输能力。本发明实施例的用于随机接入的方法和装置,通过网络设备根据终端设备发送的随机接入请求所采用的随机接入资源获知终端设备的上行传输能力,无需终端设备额外上报,节省信令的开销,从而提高用户体验。
Description
本发明实施例涉及通信领域,更具体地,涉及通信领域中用于随机接入的方法和装置。
随机接入是终端设备与网络之间建立无线链路的过程,通过随机接入,终端设备与网络设备取得上行同步。在随机接入过程完成后,网络设备和终端设备能进行常规的数据传输。
随机接入过程的主要目的是:1)为终端设备获取上行同步;2)网络设备为终端设备分配一个唯一的标识符,便于小区调度。此外,终端设备在随机接入过程中,可以向网络设备请求上行数据调度,网络设备可以根据终端设备在随机接入请求中报告的数据发送类型和缓存数据大小,调度该终端设备到合适的时间频率资源上发送上行数据。
现有的随机接入过程中,在不考虑终端设备的上行传输能力的情况下,网络设备是以默认的情况来为终端设备分配上行资源的,而默认的资源分配趋于保守,传输效率较低。如果考虑终端设备的上行传输能力,网络设备分配上行资源时就需要终端设备上报自身的上行传输能力,这会需要相应的信令开销,浪费时间,影响用户的体验。
发明内容
有鉴于此,本发明实施例提供了一种用于随机接入的方法和装置,解决了在随机接入过程中终端设备需要向网络设备上报自己的上行传输能力而导致的信令开销较大的问题。
第一方面,提供了一种用于随机接入的方法,包括:
网络设备将可用的随机接入资源分成多个随机接入资源分组,该多个随机接入资源分组对应于不同的上行传输能力,该上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,该载波支持能力用于表示是否支持多载波传输;
该网络设备向终端设备发送该多个随机接入资源分组的信息;
该网络设备接收该终端设备根据该多个随机接入资源发送的随机接入请求,该随机接入请求用于请求接入该网络设备;
该网络设备确定该随机接入请求所采用的随机接入资源所在的目标随机接入资源分组,该多个随机接入资源分组包括该目标随机接入资源分组;
该网络设备根据该目标随机接入资源分组,确定该终端设备的上行传输能力。
本发明实施例的用于随机接入的方法,通过网络设备根据不同的上行传输能力将可用的随机接入资源分成多个随机接入资源分组,并将该多个随机接入资源分组的信息发送给终端设备,这样网络设备能够根据终端设备发送的随机接入请求所采用的随机接入资源获知终端设备的上行传输能力,无需终端设备额外上报,从而节省信令的开销,提高用户体验。
在第一方面,可选地,该网络设备根据多种上行传输能力,将可用的随机接入资源分成N个随机接入资源分组。可选地,该N个随机接入资源分组可以与不同的上行传输能力具有一一对应的关系,即该N个随机接入资源分组与N种上行传输能力一一对应。或者,该N个随机接入资源分组与不同的传输能力也可以具有多对一的关系,即一种上行传输能力可以对应多个随机接入资源分组。
可选地,在N个随机接入资源分组中至少存在第一随机接入资源分组和第二随机接入资源分组,该第一随机接入资源分组和该第二随机接入资源分组对应不同的上行传输能力。
在第一方面的第一种可能的实现方式中,该网络设备向终端设备发送该多个随机接入资源分组的信息,包括:
该网络设备在广播消息中广播该多个随机接入资源分组的信息。此时,该网络设备以广播形式向该终端设备发送该多个随机接入资源分组的信息。
结合第一方面的上述可能的实现方式,在第一方面的第二种可能的实现方式中,该多个随机接入资源分组对应于不同的上行传输能力,包括:
该多个随机接入资源分组与多个组合一一对应,该多个组合中的每个组合由该上行传输能力和覆盖等级组成。
此时,该网络设备根据多种上行传输能力以及多种覆盖等级,将该可用的随机接入资源分成多个随机接入资源分组。该多个随机接入资源分组中的任意两个随机接入资源分组可以分别对应于相同的上行传输能力以及不同
的覆盖等级,或者对应于不同的上行传输能力以及相同的覆盖等级,或者对应于不同的上行传输能力以及不同的覆盖等级。
结合第一方面的上述可能的实现方式,在第一方面的第三种可能的实现方式中,在该网络设备根据该目标随机接入资源分组,确定与该目标随机接入资源分组匹配的该终端设备的上行传输能力之后,该方法还包括:
该网络设备根据该终端设备的上行传输能力,对该终端设备进行调度。
这样,该网络设备就能够根据终端设备的上行传输能力确定传输上行数据的传输方式,对该终端设备进行调度,从而提高***的传输效率,从而提高用户体验。
结合第一方面的上述可能的实现方式,在第一方面的第四种可能的实现方式中,该网络设备根据该终端设备的上行传输能力,对该终端设备进行调度,包括:
该网络设备根据该终端设备的上行传输能力和当前上行资源使用情况,对该终端设备进行调度。
结合第一方面的上述可能的实现方式,在第一方面的第五种可能的实现方式中,该网络设备根据该终端设备的上行传输能力和当前上行资源使用情况,对该终端设备进行调度,包括:
当该网络设备的当前上行资源不足以使该终端设备采用多载波传输,并且该终端设备的上行传输能力表示该终端设备能够支持多载波传输时,该网络设备向该终端设备发送调度信息,该调度信息用于指示该终端设备采用单载波传输。
结合第一方面的上述可能的实现方式,在第一方面的第六种可能的实现方式中,该随机接入资源包括随机接入前导序列、时间资源和频率资源中的至少一种。
第二方面,提供了另一种用于随机接入的方法,包括:
终端设备接收网络设备发送的多个随机接入资源分组的信息,该多个随机接入资源分组对应于不同的上行传输能力,该上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,该载波支持能力用于表示是否支持多载波传输;
该终端设备根据该终端设备的上行传输能力以及该多个随机接入资源分组的信息,从该多个随机接入资源分组中确定与该终端设备的上行传输能
力匹配的目标随机接入资源分组;
该终端设备采用该目标随机接入资源分组中的随机接入资源向该网络设备发送随机接入请求,该随机接入请求用于请求接入该网络设备。该随机接入资源所对应的目标随机接入资源分组能够用于指示该终端设备的上行传输能力。
在第二方面的第一种可能的实现方式中,该终端设备接收网络设备发送的多个随机接入资源分组的信息,包括:
该终端设备从广播消息中获取该网络设备广播的多个随机接入资源分组的信息。
结合第二方面的上述可能的实现方式,在第二方面的第二种可能的实现方式中,该终端设备根据该终端设备的上行传输能力以及该多个随机接入资源分组的信息,从该多个随机接入资源分组中确定目标随机接入资源分组,包括:
该终端设备根据该终端设备的上行传输能力、覆盖等级和该多个随机接入资源分组的信息,从该多个随机接入资源分组中确定目标随机接入资源分组。
结合第二方面的上述可能的实现方式,在第二方面的第三种可能的实现方式中,该方法还包括:
当该网络设备的当前上行资源不足以使该终端设备采用多载波传输,并且该终端设备的上行传输能力表示该终端设备能够支持多载波传输时,该终端设备接收该网络设备发送的调度信息,该调度信息用于指示该终端设备采用单载波传输。
结合第二方面的上述可能的实现方式,在第二方面的第四种可能的实现方式中,该随机接入资源包括随机接入前导序列、时间资源和频率资源中的至少一种。
第三方面,提供了一种用于随机接入的装置,用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地,该装置包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的单元。
第四方面,提供了一种用于随机接入的装置,用于执行上述第二方面或第二方面的任意可能的实现方式中的方法。具体地,该装置包括用于执行上述第二方面或第二方面的任意可能的实现方式中的方法的单元。
第五方面,提供了一种用于随机接入的装置,该装置包括:接收器、发送器、存储器、处理器和总线***。其中,该接收器、该发送器、该存储器和该处理器通过该总线***相连,该存储器用于存储指令,该处理器用于执行该存储器存储的指令,以控制接收器接收信号,并控制发送器发送信号,并且当该处理器执行该存储器存储的指令时,该执行使得该处理器执行第一方面或第一方面的任意可能的实现方式中的方法。
第六方面,提供了一种用于随机接入的装置,该装置包括:接收器、发送器、存储器、处理器和总线***。其中,该接收器、该发送器、该存储器和该处理器通过该总线***相连,该存储器用于存储指令,该处理器用于执行该存储器存储的指令,以控制接收器接收信号,并控制发送器发送信号,并且当该处理器执行该存储器存储的指令时,该执行使得该处理器执行第二方面或第二方面的任意可能的实现方式中的方法。
第七方面,提供了一种计算机可读介质,用于存储计算机程序,该计算机程序包括用于执行第一方面或第一方面的任意可能的实现方式中的方法的指令。
第八方面,提供了一种计算机可读介质,用于存储计算机程序,该计算机程序包括用于执行第二方面或第二方面的任意可能的实现方式中的方法的指令。
为了更清楚地说明本发明实施例的技术方案,下面将对本发明实施例中所需要使用的附图作简单地介绍,显而易见地,下面所描述的附图仅仅是本发明的一些实施例,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是本发明实施例应用的通信***的示意图。
图2是本发明实施例提供的用于随机接入的方法的示意性流程图。
图3是本发明实施例提供的另一用于随机接入的方法的示意性流程图。
图4是本发明实施例提供的用于随机接入的装置的示意性框图。
图5是本发明实施例提供的另一用于随机接入的装置的示意性框图。
图6是本发明实施例提供的另一用于随机接入的装置的示意性框图。
图7是本发明实施例提供的另一用于随机接入的装置的示意性框图。
图8是本发明实施例提供的另一用于随机接入的装置的示意性框图。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明的一部分实施例,而不是全部实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都应属于本发明保护的范围。
本发明实施例的技术方案可以应用于各种通信***,例如:全球移动通讯(Global System of Mobile communication,简称为“GSM”)***、码分多址(Code Division Multiple Access,简称为“CDMA”)***、宽带码分多址(Wideband Code Division Multiple Access,简称为“WCDMA”)***、通用分组无线业务(General Packet Radio Service,简称为“GPRS”)、长期演进(Long Term Evolution,简称为“LTE”)***、LTE频分双工(Frequency Division Duplex,简称为“FDD”)***、LTE时分双工(Time Division Duplex,简称为“TDD”)、通用移动通信***(Universal Mobile Telecommunication System,简称为“UMTS”)或全球互联微波接入(Worldwide Interoperability for Microwave Access,简称为“WiMAX”)通信***或未来的5G***等。
图1示出了本发明实施例应用的通信***100。该通信***100可以包括至少一个网络设备110。网络设备100可以是与终端设备通信的设备,如基站或基站控制器等。每个网络设备100可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域(小区)内的终端设备(例如UE)进行通信。该网络设备100可以是GSM***或码分多址(Code Division Multiple Access,简称为“CDMA”)***中的基站(Base Transceiver Station,简称为“BTS”),也可以是WCDMA***中的基站(NodeB,简称为“NB”),还可以是LTE***中的演进型基站(Evolutional Node B,简称为“eNB”或“eNodeB”),或者是云无线接入网络(Cloud Radio Access Network,简称为“CRAN”)中的无线控制器,或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备、未来5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,简称为“PLMN”)中的网络设备等。
在本发明实施例中,该通信***100可以是蜂窝物联网(Cellular IoT,简称为“CIoT”),CIoT***是基于现有蜂窝网络基础架构的一类重要的机
器类型通信(Machine Type Communication,简称为“MTC”)通信***。未来物联网通信的主要业务范围可能涵盖智能抄表、医疗检测监控、物流检测、工业检测监控、汽车联网、智能社区以及可穿戴设备通信等等。围绕MTC通信构造的物联网产业被认为是信息产业在继计算机、互联网和移动通信网之后的第四次浪潮,是未来网络的发展方向。此外,CIoT***对网络和终端设备还有大覆盖、高连接数、低成本和低功耗的需求。
该无线通信***100还包括位于网络设备110覆盖范围内的多个终端设备120。该终端设备120可以是移动的或固定的。该终端设备120可以指接入终端、用户设备(User Equipment,简称为“UE”)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,简称为“SIP”)电话、无线本地环路(Wireless Local Loop,简称为“WLL”)站、个人数字处理(Personal Digital Assistant,简称为“PDA”)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、未来5G网络中的终端设备或者未来演进的公共陆地移动网络(Public Land Mobile Network,简称为“PLMN”)中的终端设备等。
图1示例性地示出了一个网络设备和两个终端设备,可选地,该通信***100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备,本发明实施例对此不做限定。
可选地,该无线通信***100还可以包括网络控制器、移动管理实体等其他网络实体,本发明实施例不限于此。
在终端设备向网络设备传输上行数据之前,需要终端设备通过随机接入过程(Random Access Procedure)与小区建立连接并取得上行同步,只有取得上行同步,该终端设备才能进行上行数据的传输。随机接入过程的主要目的是:1)终端设备获取上行同步;2)网络设备为终端设备分配一个唯一的标识符,便于小区调度。此外,终端设备在随机接入过程中,可以向网络设备请求上行数据调度,网络设备可以根据终端设备在随机接入请求中报告的数据发送类型和缓存数据大小,调度该终端设备到合适的时间频率资源上发送数据。本发明实施例涉及的就是终端设备随机接入网络设备的过程。
图2示出了本发明实施例提供的用于随机接入的方法200,该方法200
可以应用于图1所示的通信***100,但本发明实施例不限于此。
S210,网络设备将可用的随机接入资源分成多个随机接入资源分组,该多个随机接入资源分组对应于不同的上行传输能力,该上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,该载波支持能力用于表示是否支持多载波传输,也叫载波聚合。
在本发明实施例中,上行传输能力可以仅仅是载波支持能力,也可以仅仅是上行子载波发送带宽,也可以包括载波支持能力和上行子载波发送带宽,本发明实施例对此不作限定。其中,载波支持能力表示是否支持多载波传输,具体是指终端设备向网络设备传输上行数据的过程中支持连续传输的载波个数的能力。网络设备可以将可用的随机接入资源按照单载波和多载波分组,也可以将可用的随机接入资源按照支持同时传输的载波个数分组,例如1个、2个、4个等等。上行子载波发送带宽表示终端设备在向网络设备传输上行数据时所支持传输的子载波的带宽,一般地,上行子载波发送带宽可以分为宽带子载波和窄带子载波,其中,宽带子载波是指在LTE通信***中支持传输的子载波宽度,即为15kHz,窄带子载波是指宽度在LTE***中的子载波15kHz的一半及以下的子载波,例如带宽为7.5kHz,3.75kHz,2.5kHz的子载波等等。
具体地,例如,在一种典型的CIoT***,即窄带IoT(Narrow band IoT,简称为“NB-IoT”)***中,上行和下行的***最小带宽都是200kHz。在下行,该***支持带宽为15kHz的子载波在频域复接,网络设备可以使用单载波(即一个15kHz载波)向终端设备发送数据,也可以使用多载波(即连续的多个15kHz载波)向终端设备发送数据。在上行,NB-IoT***同时支持带宽为3.75kHz和15kHz的两种子载波,3.75kHz载波即为窄带子载波,15kHz载波即为宽带子载波。当采用3.75kHz载波时,终端设备只支持单载波发送,即该终端设备在同一时刻只能发送一个3.75kHz载波信号;当采用15kHz载波时,终端设备可以支持单载波发送也可以支持多载波发送。
在上行,该终端设备同时支持3.75kHz和15kHz两种子载波带宽主要出于如下考虑,当终端设备的上行发射功率受限时(终端设备采用相同的上行发送功率时),3.75kHz载波的带宽只有15kHz载波带宽的1/4,因此发送信号的功率谱密度是15kHz载波的4倍,具有更好的抗干扰和抗路径损耗性能,因此3.75kHz载波更适用于覆盖很差的终端设备,例如处于小区边缘甚至地
下室的终端设备。此外,由于3.75kHz载波的带宽只有15kHz载波带宽的1/4,当要发送相同大小的数据时,3.75kHz单载波发送需要的时间几乎是15kHz单载波的4倍,因此使用3.75kHz载波的终端设备传输数据的时间要远大于使用15kHz载波的终端设备传输数据的时间,使用3.75kHz载波的终端设备功耗也更大。
应理解,不同的上行传输能力与不同的随机接入资源分组之间可以是一对一的关系,也可以是一对多的关系。即多个不同的上行传输能力可以对应多个不同的随机接入资源分组,一个上行传输能力可以对应一个随机接入资源分组,也可以对应多个随机接入资源分组,例如,一个上行传输能力对应N个随机接入资源分组,N为整数,那么当N大于或等于2时,在N个随机接入资源分组中至少存在第一随机接入资源分组和第二随机接入资源分组,该第一随机接入资源分组和该第二随机接入资源分组对应的上行传输能力可以是相同的,也可以是不同的。本发明实施例对此不作限定。
作为一个可选实施例,该多个随机接入资源分组对应于不同的上行传输能力,包括:
该多个随机接入资源分组与多个组合一一对应,该多个组合中的每个组合由该上行传输能力和覆盖等级组成。
在本发明实施例中,添加了根据覆盖等级分组的方式。具体地,对于处于不同通信环境下的终端设备,网络设备的调度策略将完全不同。例如处于小区中心位置的终端设备,无线信道条件较好,网络设备使用较小的功率就能建立可靠的下行链路,并且可以使用大的传输码块、高阶调制、载波绑定等技术手段等快速的完成数据传输;而对处于小区边缘或者地下室的终端设备,无线信道质量较差,网络设备可能需要使用较大的功率才能保持链路,并且在传输数据过程中需要使用小码块、低阶调制、多次重复发送和扩频等技术才能完成数据传输。
为了保证通信的可靠性、节省网络设备的发送功率,需要对不同信道条件的终端设备进行区分,以方便网络设备进行调度,因此引入了覆盖等级的概念。处于同一覆盖等级的终端设备的信道传输条件相似,网络设备可以对这类终端设备采用相似的调度参数,它们占用的控制信令开销也相似。因此一个覆盖等级对应于一定的信道条件或信号条件。例如,在CIoT***中,可以划分为3个覆盖等级,距离网络设备较近的终端设备覆盖等级为“普通
覆盖”,重复次数为不重复;距离网络设备较远的终端设备覆盖等级为“扩展覆盖”,重复次数为8或16;处于地下室等场景的终端设备覆盖等级为“极限覆盖”,重复次数可以达到32或64或者更高。终端设备可以根据覆盖等级选择合适的传输次数,来降低不必要的重复,减少功率开销。
因此,在本发明实施例中,网络设备可以根据不同的上行传输能力和不同的覆盖等级,将可用的随机接入资源分成多个随机接入资源分组。即该网络设备可以根据载波支持能力和覆盖等级对可用的随机接入资源进行分组,也可以根据上行子载波发送带宽和覆盖等级对可用的随机接入资源进行分组,也可以根据载波支持能力、上行子载波发送带宽和覆盖等级对可用的随机接入资源进行分组。此外,网络设备还可以根据其他的特性综合考虑对可用的随机接入资源进行分组,本发明实施例对此不做限定。
该网络设备根据多种上行传输能力以及覆盖能力,将该可用的随机接入资源分成多个随机接入资源分组。该多个随机接入资源分组中的任意两个随机接入资源分组可以分别对应于相同的上行传输能力以及不同的覆盖等级,或者对应于不同的上行传输能力以及相同的覆盖等级,或者对应于不同的上行传输能力以及不同的覆盖等级。该覆盖等级可以由终端设备估计自身的信号或信号条件得出。可选地该覆盖等级可以由该终端设备上报给网络设备。或者终端设备估计自身的信号或信号条件后将相关估计结果上报至网络设备并由网络设备基于该结果计算覆盖等级并传输该覆盖等级到终端设备。
作为一个可选实施例,该随机接入资源包括随机接入前导序列、用于执行随机接入的时间资源、和用于执行随机接入的频率资源中的至少一种。可选地,在LTE***中,该随机接入前导序列可以为循环移位后的扎德奥夫-朱(Zadoff-Chu,简称为“ZC”)序列,ZC序列具有恒包络、相位连续、自相关性好的优点,因此一般多采用ZC序列作为随机接入的随机接入资源。在UMTS***或WCDMA***中,该随机接入前导序列可以由哈达玛(Hadamard)序列加扰来获得。本发明实施例对此不作限定。
S220,该网络设备向终端设备发送该多个随机接入资源分组的信息。
该网络设备在将可用的随机接入资源分成多个随机接入资源分组之后,向终端设备发送该多个随机接入资源分组的信息。应理解,该网络设备可以向一个终端设备发送该多个随机接入资源分组的信息,也可以向多个终端设备发送该多个随机接入资源分组的信息,本发明实施例对此不做限定。
作为一个可选实施例,该网络设备向终端设备发送该多个随机接入资源分组的信息包括:
该网络设备在广播消息中广播该多个随机接入资源分组的信息。
在该实施例中,该网络设备通过广播的方式向终端设备发送多个随机接入资源分组的信息,这样,该网络设备覆盖范围内的终端设备都可以获取到该多个随机接入资源分组的信息。
S230,该终端设备接收该网络设备发送的多个随机接入资源分组的信息,并根据自身的上行传输能力和该多个随机接入资源分组的信息,从该多个随机接入资源分组中确定目标随机接入资源分组。
具体地,如果网络设备直接向终端设备发送多个随机接入资源分组的信息,那么该终端设备直接接收该多个随机接入资源分组的信息;如果该网络设备在广播消息中广播该多个随机接入资源分组的信息,则随机接入该网络设备的终端设备需要读取广播消息,并获取该多个随机接入资源分组的信息。
在接收到该多个随机接入资源分组的信息之后,该终端设备可以根据自身的上行传输能力,从该多个随机接入资源分组中确定目标随机接入资源分组。例如,如果该终端设备支持单载波传输,那么该终端设备确定的目标随机接入资源分组对应的载波支持能力即为单载波传输;如果该终端设备支持15kHz多载波,那么该终端设备确定的随机接入资源分组对应的载波支持能力为多载波传输,对应的子载波发送带宽为15kHz。
作为一个可选实施例,该终端设备根据自身的上行传输能力和该多个随机接入资源分组的信息,从该多个随机接入资源分组中确定目标随机接入资源分组,包括:
该终端设备根据自身的上行传输能力、覆盖等级和该多个随机接入资源分组的信息,从该多个随机接入资源分组中确定目标随机接入资源分组。
具体地,如果多个随机接入资源分组的信息是网络设备根据不同的上行传输能力和不同的覆盖等级,来进行分组得到的,那么该终端设备就可以根据自身的上行传输能力和覆盖等级,来从该多个随机接入资源分组中确定目标随机接入资源分组。例如,如果网络设备根据载波支持能力和覆盖等级对可用的随机接入资源进行分组,那么该终端设备根据自身的载波支持能力和覆盖等级确定目标随机接入资源分组;如果网络设备根据上行子载波发送带
宽和覆盖等级对可用的随机接入资源进行分组,那么该终端设备根据自身的上行子载波发送带宽和覆盖等级确定目标随机接入资源分组;如果网络设备根据载波支持能力、上行子载波发送带宽和覆盖等级对可用的随机接入资源进行分组,那么该终端设备根据自身的载波支持能力、上行子载波发送带宽和覆盖等级确定目标随机接入资源分组。
此外,覆盖等级可以是在部署该终端设备时确定好的,也可以是终端设备通过对小区的下行信道质量进行测量来获得的,例如终端设备可以测量小区的同步信号,包括主同步信号(Primary Synchronization Signal,简称为“PSS”)、辅同步信号(Secondary Synchronization Signal,简称为“SSS”)、物理广播信道(Physical Broadcast Channel,简称为“PBCH”)以及小区的公共参考信号(Cell-specific reference signals,简称为“CRS”)等。本发明实施例对此不作任何限定。终端设备通过测量便可以获得自身当前的覆盖等级,从多个随机接入资源分组中选择与自身的覆盖等级相对于的目标随机接入资源分组。
S240,该终端设备采用该目标随机接入资源分组中的随机接入资源向该网络设备发送随机接入请求,该随机接入请求用于请求接入该网络设备。
具体地,该终端设备在确定了目标随机接入资源分组之后,可以采用该目标随机接入资源分组中的随机接入资源向该网络设备发送随机接入请求,请求接入该网络设备。
S250,该网络设备接收该终端设备发送的随机接入请求,并且确定该随机接入请求所采用的随机接入资源所在的目标随机接入资源分组,该多个随机接入资源分组包括该目标随机接入资源分组。
S260,该网络设备根据该目标随机接入资源分组,确定该终端设备的上行传输能力。
现有的随机接入过程中,在不考虑终端设备的能力的情况下,网络设备是以默认的情况来为终端设备分配上行资源的,而默认的资源分配趋于保守,传输效率较低。如果考虑终端设备的能力,网络设备分配上行资源时就需要终端设备上报自身的能力,这会需要相应的信令开销,浪费时间,影响用户的体验。
而本发明实施例的用于随机接入的方法,通过网络设备根据不同的载波支持能力将可用的随机接入资源分成多个随机接入资源分组,并发送给终端
设备,该终端设备根据自身的载波支持能力从多个随机接入资源分组中确定目标随机接入资源分组,并采用该目标随机接入资源分组中的随机接入资源向该网络设备发送随机接入请求,解决了在随机接入过程中终端设备需要向网络设备上报自己的能力而导致的信令开销较大的问题,这样网络设备能够根据终端设备发送的随机接入请求所采用的随机接入资源获知终端设备的能力,无需终端设备额外上报,从而节省信令的开销,提高用户体验。
作为一个可选实施例,在该网络设备根据该目标随机接入资源分组,确定该终端设备的上行传输能力之后,该方法还包括:
该网络设备根据该终端设备的上行传输能力,对该终端设备进行调度。
具体地,该网络设备可以接收该终端设备发送的随机接入请求,根据该随机接入请求就可以确定该随机接入资源所在的目标随机接入资源分组,该网络设备根据目标随机接入资源分组就可以确定该终端设备的上行传输能力,然后该网络设备根据该终端设备的上行传输能力对该终端设备进行调度。所述调度包括对终端设备进行资源分配或控制等行为。
应理解,若多个随机接入资源分组的信息是网络设备根据不同的上行传输能力来进行分组得到的,则目标随机接入资源分组可以是终端设备根据自身的上行传输能力来确定的;若多个随机接入资源分组的信息是网络设备根据不同的上行传输能力和不同的覆盖等级来进行分组得到的,则目标随机接入资源分组可以是终端设备根据自身的上行传输能力和覆盖等级来确定的。本发明实施例可以是该网络设备根据该目标随机接入资源分组,确定该终端设备的上行传输能力,然后根据该终端设备的上行传输能力对该终端设备进行调度;也可以是该网络设备根据该目标随机接入资源分组,确定该终端设备的上行传输能力和覆盖等级,然后根据该终端设备的上行传输能力和覆盖等级对该终端设备进行调度。本发明实施例对此不做限定。
作为一个可选实施例,该网络设备根据该终端设备的上行传输能力,对该终端设备进行调度,包括:
该网络设备根据该终端设备的上行传输能力和当前上行资源使用情况,对该终端设备进行调度。
在本发明实施例中,该网络设备可以根据该终端设备的上行传输能力和当前上行资源使用情况,对该终端设备进行调度。具体而言,该终端设备的载波支持能力可能与当前资源使用情况不相符,例如,如果小区当前有较多
的终端设备在进行上行数据传输,造成可用的上行资源缺乏,不足以满足该终端设备的载波支持能力,那么该终端设备可以按照当前资源使用情况来对该终端设备进行调度。例如终端设备在随机接入请求中表示支持上行15kHz多载波传输时,网络设备发现小区可用的上行资源缺乏,无法调度多个载波供终端设备进行上行传输时,网络设备有可能调度终端设备进行15kHz单载波传输,甚至会调度3.75kHz的单载波传输。但是,如果终端设备的载波支持能力表示只支持单载波传输时,网络设备不应调度终端设备进行多载波传输。
应理解,上述当前上行资源可以包括时间资源、频率资源和正交码分资源中的至少一种,本发明实施例对此不作限定。
作为一个可选实施例,该网络设备根据该终端设备的上行传输能力和当前上行资源使用情况,对该终端设备进行调度,包括:
当该网络设备的当前上行资源不足以使该终端设备采用多载波传输,并且该终端设备的上行传输能力表示该终端设备能够支持多载波传输时,该网络设备向该终端设备发送调度信息,该调度信息用于指示该终端设备采用单载波传输。
该终端设备接收该调度信息。
在NB-IoT***中,上行可以同时支持带宽为3.75kHz和15kHz的两种子载波、单载波和多载波两种传输方式,但是现有的方法中没有给出如何确定上行传输过程中子载波发送带宽和传输方式的方法,更没有指示出应该由网络设备和终端设备的哪一侧来确定,这将严重影响上行数据的传输效率。而本发明实施例采用随机接入的方式,先由网络设备根据不同的上行传输能力将可用的随机接入资源分成多个随机接入资源分组,将多个随机接入资源分组的信息发送给终端设备,再由该终端设备从多个随机接入资源分组的信息中确定与自身的上行传输能力相对应的目标随机接入资源分组,该终端设备采用该目标随机接入资源分组中的随机接入资源向该网络设备发送随机接入请求,这样便可以使网络设备根据终端设备的实际上行传输能力来对该终端设备进行调度,终端设备就可以根据自身的上行传输能力来进行上行数据的传输。
因此,本发明实施例的用于随机接入的方法,通过网络设备根据不同的上行传输能力将可用的随机接入资源分成多个随机接入资源分组,并发送给
终端设备,该终端设备根据自身的上行传输能力从多个随机接入资源分组中确定目标随机接入资源分组,并采用该目标随机接入资源分组中的随机接入资源向该网络设备发送随机接入请求,该网络设备就可以确定该随机接入请求所采用的随机接入资源,从而确定该终端设备的上行传输能力,根据该终端设备的上行传输能力对该终端设备进行调度,不需要终端设备上报自身的能力,节省了信令开销,还解决了终端设备在上行传输时传输方式不能确定的问题,能够使终端设备根据自身的能力来传输上行数据,提高***的传输效率,从而提高用户体验。
应理解,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。
图3示出了本发明实施例提供的用于随机接入的方法300的示意性流程图。
在S310中,网络设备根据覆盖等级、上行子载波发送带宽和载波支持能力将可用的随机接入资源分为多个随机接入资源分组,该随机接入资源为ZC序列;
具体而言,例如,如果小区总共有251个可用的随机接入资源(对应251个ZC序列,序列号标记为0~250),那么其分组可按如下进行:
a.普通覆盖,多载波,子载波带宽15kHz:序列0~30、211~250;
b.普通覆盖,单载波,子载波带宽15kHz:序列31~60;
c.扩展覆盖,多载波,子载波带宽15kHz:序列61~90;
d.扩展覆盖,单载波,子载波带宽15kHz:序列91~120;
e.扩展覆盖,单载波,子载波带宽3.75kHz:序列121~150;
f.极限覆盖,单载波,子载波带宽15kHz:序列151~180;
g.极限覆盖,单载波,子载波带宽3.75kHz:序列181~210;
这里覆盖等级包括普通覆盖、扩展覆盖和极限覆盖,子载波支持带宽包括3.75kHz和15kHZ,载波支持能力包括单载波和多载波。
在S320中,该网络设备在广播消息中广播该多个随机接入资源分组的信息;
在S330中,终端设备从该广播消息中获取该多个随机接入资源分组的信息,并根据自身的覆盖等级、上行子载波发送带宽和载波支持能力,从该
多个随机接入资源分组中确定目标随机接入资源分组;
例如,若该终端设备上行只支持子载波间隔为3.75kHz的单载波传输,并且该终端设备通过下行测量发现当前的覆盖等级对应为扩展覆盖,那么该终端设备所确定的目标随机接入资源分组为上述的e组。
在S340中,该终端设备采用该目标随机接入资源分组中的随机接入资源向该网络设备发送随机接入请求,用于请求接入该网络设备;
具体地,例如,该终端设备从e组中随机选择一个序列130作为当前随机接入的传输序列,到随机接入指定的时间频率资源上发送序列130,即发送携带序列130的随机接入请求。
在S350中,该网络设备接收该随机接入请求,确定该随机接入请求所采用的随机接入资源所在的目标随机接入资源分组;
在S360中,该网络设备根据该目标随机接入资源分组,确定该终端设备的覆盖等级、上行子载波发送带宽和载波支持能力;
具体地,例如,该网络设备在随机接入指定的时间资源和频率资源上接收该终端设备发送的携带序列130的随机接入请求,如果该网络设备正确接收并译码获取了序列130,该网络设备就可以根据序列130确定该终端设备所确定的目标随机接入资源分组,那么该网络设备就获取了该终端设备当前所处的覆盖等级、子载波支持带宽以及载波支持能力,该网络设备还有可能从该随机接入请求中获取该终端设备当前的接入类型、上行缓存数大小等信息。
在S370中,该网络设备向该终端设备发送随机接入响应消息,该随机接入响应消息中携带调度信息,该调度信息用于根据该终端设备的覆盖等级、上行子载波发送带宽和载波支持能力对该终端设备进行调度。
具体地,如果在当前一段时间内,小区内存在可用的上行资源供终端设备传输,该终端设备可以向该终端设备发送随机接入响应消息,在该随机接入响应消息中携带调度信息。在上述的例子中,该终端设备在接收到网络设备发送的随机接入响应消息后,会根据其中的调度信息使用3.75kHz单载波进行上行数据的传输。
本发明实施例的用于随机接入的方法,通过网络设备根据不同的上行传输能力和不同的覆盖等级将可用的随机接入资源分成多个随机接入资源分组,并发送给终端设备,该终端设备根据自身的载波支持能力和覆盖等级从
多个随机接入资源分组中确定目标随机接入资源分组,并采用该目标随机接入资源分组中的随机接入资源向该网络设备发送随机接入请求,该网络设备就可以确定该随机接入请求所采用的随机接入资源,从而确定该终端设备的载波支持能力和覆盖等级,根据该终端设备的载波支持能力和覆盖等级对该终端设备进行调度,不需要终端设备上报自身的能力,节省了信令开销,还解决了终端设备在上行传输时传输方式不能确定的问题,能够使终端设备根据自身的能力来传输上行数据,提高***的传输效率,从而提高用户体验。
应理解,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。
上文中结合图1至图3,详细描述了根据本发明实施例的用于随机接入的方法,下面将结合图4至图8,详细描述根据本发明实施例的用于随机接入的装置。
图4示出了本发明实施例提供的用于随机接入的装置400,该装置400包括:
分组单元410,用于将可用的随机接入资源分成多个随机接入资源分组,该多个随机接入资源分组对应于不同的上行传输能力,该上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,该载波支持能力用于表示是否支持多载波传输;
发送单元420,用于向终端设备发送该多个随机接入资源分组的信息。
接收单元430,用于接收该终端设备根据该多个随机接入资源分组的信息发送的随机接入请求,该随机接入请求用于请求接入该装置;
确定单元440,用于确定该随机接入请求所采用的随机接入资源所在的目标随机接入资源分组,该多个随机接入资源分组包括该目标随机接入资源分组;
该确定单元还用于:根据该目标随机接入资源分组,确定与该目标随机接入资源分组匹配的该终端设备的上行传输能力。
可选地,该多个随机接入资源分组对应于不同的上行传输能力,包括:
该多个随机接入资源分组与多个组合一一对应,该多个组合中的每个组合由该上行传输能力和覆盖等级组成。
可选地,如图5所示,该装置还包括:
调度单元450,用于在根据该目标随机接入资源分组,确定该终端设备的上行传输能力之后,根据该终端设备的上行传输能力,对该终端设备进行调度。
可选地,该调度单元具体用于:
根据该终端设备的上行传输能力和当前上行资源使用情况,对该终端设备进行调度。
可选地,该发送单元还用于:
当该装置的当前上行资源不足以使该终端设备采用多载波传输,并且该终端设备的上行传输能力表示该终端设备能够支持多载波传输时,向该终端设备发送调度信息,该调度信息用于指示该终端设备采用单载波传输。
可选地,该随机接入资源包括随机接入前导序列、时间资源和频率资源中的至少一种。
应理解,这里的装置400以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(Application Specific Integrated Circuit,ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中,本领域技术人员可以理解,装置400可以具体为上述实施例中的网络设备,装置400可以用于执行上述方法实施例中与网络设备对应的各个流程和/或步骤,为避免重复,在此不再赘述。
图6示出了本发明实施例提供的用于随机接入的装置500,该装置500包括:
接收单元510,用于接收网络设备发送的多个随机接入资源分组的信息,该多个随机接入资源分组对应于不同的上行传输能力,该上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,该载波支持能力用于表示是否支持多载波传输;
确定单元520,用于根据该装置的上行传输能力以及该多个随机接入资源分组的信息,从该多个随机接入资源分组中确定目标随机接入资源分组;
发送单元530,用于采用该目标随机接入资源分组中的随机接入资源向该网络设备发送随机接入请求,该随机接入请求用于请求接入该网络设备。
可选地,该多个随机接入资源分组与多个组合一一对应,该多个组合中的每个组合包括该上行传输能力和覆盖等级,该确定单元具体用于:
根据该装置的上行传输能力、覆盖等级和该多个随机接入资源分组的信息,从该多个随机接入资源分组中确定目标随机接入资源分组。
可选地,该接收单元还用于:
当该网络设备的当前上行资源不足以使该装置采用多载波传输,并且该装置的上行传输能力表示该装置能够支持多载波传输时,接收该网络设备发送的调度信息,该调度信息用于指示该装置采用单载波传输。
可选地,该随机接入资源包括随机接入前导序列、时间资源和频率资源中的至少一种。
应理解,这里的装置500以功能单元的形式体现。这里的术语“单元”可以指应用特有集成电路(Application Specific Integrated Circuit,ASIC)、电子电路、用于执行一个或多个软件或固件程序的处理器(例如共享处理器、专有处理器或组处理器等)和存储器、合并逻辑电路和/或其它支持所描述的功能的合适组件。在一个可选例子中,本领域技术人员可以理解,装置500可以具体为上述实施例中的终端设备,装置500可以用于执行上述方法实施例中与终端设备对应的各个流程和/或步骤,为避免重复,在此不再赘述。
图7示出了本发明实施例提供的用于随机接入的装置600。该装置600包括处理器610、发送器620、接收器630、存储器640和总线***650。其中,处理器610、发送器620、接收器630和存储器640通过总线***650相连,该存储器640用于存储指令,该处理器610用于执行该存储器640存储的指令,以控制该发送器620发送信号,并控制该接收器630接收信号。
其中,该处理器610用于将可用的随机接入资源分成多个随机接入资源分组,该多个随机接入资源分组对应于不同的上行传输能力,该上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,该载波支持能力用于表示是否支持多载波传输;
该发送器620用于向终端设备发送该多个随机接入资源分组的信息。
接收器630用于接收该终端设备根据该多个随机接入资源分组的信息发送的随机接入请求,该随机接入请求用于请求接入该装置;
该处理器610还用于确定该随机接入请求所采用的随机接入资源所在的目标随机接入资源分组,该多个随机接入资源分组包括该目标随机接入资源分组;
该处理器610还用于:根据该目标随机接入资源分组,确定该终端设备
的上行传输能力。
可选地,该多个随机接入资源分组对应于不同的上行传输能力,包括:
该多个随机接入资源分组与多个组合一一对应,该多个组合中的每个组合由该上行传输能力和覆盖等级组成。
可选地,该发送器620还用于在根据该目标随机接入资源分组,确定该终端设备的上行传输能力之后,根据该终端设备的上行传输能力,对该终端设备进行调度。
可选地,该发送器620具体用于:
根据该终端设备的上行传输能力和当前上行资源使用情况,对该终端设备进行调度。
可选地,该发送器620具体用于:
当该装置的当前上行资源不足以使该终端设备采用多载波传输,并且该终端设备的上行传输能力表示该终端设备能够支持多载波传输时,向该终端设备发送调度信息,该调度信息用于指示该终端设备采用单载波传输。
可选地,该随机接入资源包括随机接入前导序列、时间资源和频率资源中的至少一种。
应理解,装置600可以具体为上述实施例中的网络设备,并且可以用于执行上述方法实施例中与网络设备对应的各个步骤和/或流程。可选地,该存储器640可以包括只读存储器和随机存取存储器,并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如,存储器还可以存储设备类型的信息。该处理器630可以用于执行存储器中存储的指令,并且当该处理器执行存储器中存储的指令时,该处理器用于执行上述方法实施例的各个步骤和/或流程。
图8示出了本发明实施例提供的用于随机接入的装置700。该装置700包括接收器710、处理器720、发送器730、存储器740和总线***750。其中,接收器710、处理器720、发送器730和存储器740通过总线***750相连,该存储器740用于存储指令,该处理器720用于执行该存储器740存储的指令,以控制该接收器710接收信号,并控制该发送器730发送指令。
其中,该接收器710用于接收网络设备发送的多个随机接入资源分组的信息,该多个随机接入资源分组对应于不同的上行传输能力,该上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,该载波支持能力
用于表示是否支持多载波传输;
该处理器720用于根据该装置的上行传输能力以及该多个随机接入资源分组的信息,从该多个随机接入资源分组中确定目标随机接入资源分组;
该发送器730用于采用该目标随机接入资源分组中的随机接入资源向该网络设备发送随机接入请求,该随机接入请求用于请求接入该网络设备。
可选地,该处理器720具体用于:
根据该装置的上行传输能力、覆盖等级和该多个随机接入资源分组的信息,从该多个随机接入资源分组中确定目标随机接入资源分组。
可选地,该接收器710还用于:
当该网络设备的当前上行资源不足以使该装置采用多载波传输,并且该装置的上行传输能力表示该装置能够支持多载波传输时,接收该网络设备发送的调度信息,该调度信息用于指示该装置采用单载波传输。
可选地,该随机接入资源包括随机接入前导序列、时间资源和频率资源中的至少一种。
应理解,装置700可以具体为上述实施例中的终端设备,并且可以用于执行上述方法实施例中与终端设备对应的各个步骤和/或流程。可选地,该存储器740可以包括只读存储器和随机存取存储器,并向处理器提供指令和数据。存储器的一部分还可以包括非易失性随机存取存储器。例如,存储器还可以存储设备类型的信息。该处理器720可以用于执行存储器中存储的指令,并且该处理器执行该指令时,该处理器可以执行上述方法实施例中与终端设备对应的各个步骤和/或流程。
应理解,在本发明实施例中,该处理器可以是中央处理单元(Central Processing Unit,CPU),该处理器还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
在实现过程中,上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该
存储介质位于存储器,处理器执行存储器中的指令,结合其硬件完成上述方法的步骤。为避免重复,这里不再详细描述。
本领域普通技术人员可以意识到,结合本文中所公开的实施例中描述的各方法步骤和单元,能够以电子硬件、计算机软件或者二者的结合来实现,为了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描述了各实施例的步骤及组成。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。本领域普通技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到,为了描述的方便和简洁,上述描述的***、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的***、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个***,或一些特征可以忽略,或不执行。另外,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或通信连接,也可以是电的,机械的或其它的形式连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本发明实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分,或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在
一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,简称为“ROM”)、随机存取存储器(Random Access Memory,简称为“RAM”)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到各种等效的修改或替换,这些修改或替换都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以权利要求的保护范围为准。
Claims (20)
- 一种用于随机接入的方法,其特征在于,包括:网络设备将可用的随机接入资源分成多个随机接入资源分组,所述多个随机接入资源分组对应于不同的上行传输能力,所述上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,所述载波支持能力用于表示是否支持多载波传输;所述网络设备向终端设备发送所述多个随机接入资源分组的信息;所述网络设备接收所述终端设备根据所述多个随机接入资源分组的信息发送的随机接入请求,所述随机接入请求用于请求接入所述网络设备;所述网络设备确定所述随机接入请求所采用的随机接入资源所在的目标随机接入资源分组,所述多个随机接入资源分组包括所述目标随机接入资源分组;所述网络设备根据所述目标随机接入资源分组,确定与所述目标随机接入资源分组匹配的所述终端设备的上行传输能力。
- 根据权利要求1所述的方法,其特征在于,所述多个随机接入资源分组与多个组合一一对应,所述多个组合中的每个组合包括所述上行传输能力和覆盖等级。
- 根据权利要求1或2所述的方法,其特征在于,在所述网络设备根据所述目标随机接入资源分组,确定与所述目标随机接入资源分组匹配的所述终端设备的上行传输能力之后,所述方法还包括:所述网络设备根据所述终端设备的上行传输能力,对所述终端设备进行调度。
- 根据权利要求3所述的方法,其特征在于,所述网络设备根据所述终端设备的上行传输能力,对所述终端设备进行调度,包括:所述网络设备根据所述终端设备的上行传输能力和当前上行资源使用情况,对所述终端设备进行调度。
- 根据权利要求4所述的方法,其特征在于,所述网络设备根据所述终端设备的上行传输能力和当前上行资源使用情况,对所述终端设备进行调度,包括:当所述网络设备的当前上行资源不足以使所述终端设备采用多载波传输,并且所述终端设备的上行传输能力表示所述终端设备能够支持多载波传 输时,所述网络设备向所述终端设备发送调度信息,所述调度信息用于指示所述终端设备采用单载波传输。
- 根据权利要求1至5中任一项所述的方法,其特征在于,所述随机接入资源包括随机接入前导序列、时间资源和频率资源中的至少一种。
- 一种用于随机接入的方法,其特征在于,包括:终端设备接收网络设备发送的多个随机接入资源分组的信息,所述多个随机接入资源分组对应于不同的上行传输能力,所述上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,所述载波支持能力用于表示是否支持多载波传输;所述终端设备根据所述终端设备的上行传输能力以及所述多个随机接入资源分组的信息,从所述多个随机接入资源分组中确定与所述终端设备的上行传输能力匹配的目标随机接入资源分组;所述终端设备采用所述目标随机接入资源分组中的随机接入资源向所述网络设备发送随机接入请求,所述随机接入请求用于请求接入所述网络设备。
- 根据权利要求7所述的方法,其特征在于,所述多个随机接入资源分组与多个组合一一对应,所述多个组合中的每个组合包括所述上行传输能力和覆盖等级;所述终端设备根据所述终端设备的上行传输能力以及所述多个随机接入资源分组的信息,从所述多个随机接入资源分组中确定与所述终端设备的上行传输能力匹配的目标随机接入资源分组,包括:所述终端设备根据所述终端设备的上行传输能力、覆盖等级和所述多个随机接入资源分组的信息,从所述多个随机接入资源分组中确定与所述终端设备的上行传输能力匹配的目标随机接入资源分组。
- 根据权利要求7或8所述的方法,其特征在于,所述终端设备的上行传输能力表示所述终端设备能够支持多载波传输,所述方法还包括:所述终端设备接收所述网络设备发送的调度信息,所述调度信息用于指示所述终端设备采用单载波传输,所述单载波传输由所述网络设备基于当前上行资源不足以使所述终端设备采用多载波传输的条件而触发。
- 根据权利要求7至9中任一项所述的方法,其特征在于,所述随机接入资源包括随机接入前导序列、时间资源和频率资源中的至少一种。
- 一种用于随机接入的装置,其特征在于,包括:分组单元,用于将可用的随机接入资源分成多个随机接入资源分组,所述多个随机接入资源分组对应于不同的上行传输能力,所述上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,所述载波支持能力用于表示是否支持多载波传输;发送单元,用于向终端设备发送所述多个随机接入资源分组的信息;接收单元,用于接收所述终端设备根据所述多个随机接入资源分组的信息发送的随机接入请求,所述随机接入请求用于请求接入所述装置;确定单元,用于确定所述随机接入请求所采用的随机接入资源所在的目标随机接入资源分组,所述多个随机接入资源分组包括所述目标随机接入资源分组;所述确定单元还用于:根据所述目标随机接入资源分组,确定与所述目标随机接入资源分组匹配的所述终端设备的上行传输能力。
- 根据权利要求11所述的装置,其特征在于,所述多个随机接入资源分组与多个组合一一对应,所述多个组合中的每个组合包括所述上行传输能力和覆盖等级。
- 根据权利要求11或12所述的装置,其特征在于,所述装置还包括:调度单元,用于在所述根据所述目标随机接入资源分组,确定与所述目标随机接入资源分组匹配的所述终端设备的上行传输能力之后,根据所述终端设备的上行传输能力,对所述终端设备进行调度。
- 根据权利要求13所述的装置,其特征在于,所述调度单元具体用于:根据所述终端设备的上行传输能力和当前上行资源使用情况,对所述终端设备进行调度。
- 根据权利要求14所述的装置,其特征在于,所述发送单元还用于:当所述装置的当前上行资源不足以使所述终端设备采用多载波传输,并且所述终端设备的上行传输能力表示所述终端设备能够支持多载波传输时,向所述终端设备发送调度信息,所述调度信息用于指示所述终端设备采用单载波传输。
- 根据权利要求11至15中任一项所述的装置,其特征在于,所述随机接入资源包括随机接入前导序列、时间资源和频率资源中的至少一种。
- 一种用于随机接入的装置,其特征在于,包括:接收单元,用于接收网络设备发送的多个随机接入资源分组的信息,所述多个随机接入资源分组对应于不同的上行传输能力,所述上行传输能力包括载波支持能力和上行子载波发送带宽中的至少一种,所述载波支持能力用于表示是否支持多载波传输;确定单元,用于根据所述装置的上行传输能力以及所述多个随机接入资源分组的信息,从所述多个随机接入资源分组中确定与所述目标随机接入资源分组匹配的目标随机接入资源分组;发送单元,用于采用所述目标随机接入资源分组中的随机接入资源向所述网络设备发送随机接入请求,所述随机接入请求用于请求接入所述网络设备。
- 根据权利要求17所述的装置,其特征在于,所述多个随机接入资源分组与多个组合一一对应,所述多个组合中的每个组合包括所述上行传输能力和覆盖等级;所述确定单元具体用于:根据所述装置的上行传输能力、覆盖等级和所述多个随机接入资源分组的信息,从所述多个随机接入资源分组中确定与所述终端设备的上行传输能力匹配的目标随机接入资源分组。
- 根据权利要求17或18所述的装置,其特征在于,所述终端设备的上行传输能力表示所述终端设备能够支持多载波传输,所述接收单元还用于:接收所述网络设备发送的调度信息,所述调度信息用于指示所述装置采用单载波传输,所述单载波传输由所述网络设备基于当前上行资源不足以使所述装置采用多载波传输的条件而触发。
- 根据权利要求17至19中任一项所述的装置,其特征在于,所述随机接入资源包括随机接入前导序列、时间资源和频率资源中的至少一种。
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