WO2018120103A1 - 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 PDF

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Publication number
WO2018120103A1
WO2018120103A1 PCT/CN2016/113686 CN2016113686W WO2018120103A1 WO 2018120103 A1 WO2018120103 A1 WO 2018120103A1 CN 2016113686 W CN2016113686 W CN 2016113686W WO 2018120103 A1 WO2018120103 A1 WO 2018120103A1
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Prior art keywords
random access
terminal device
bandwidth
access resource
resource
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PCT/CN2016/113686
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English (en)
French (fr)
Inventor
杨宁
唐海
Original Assignee
广东欧珀移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to CN201680088677.2A priority Critical patent/CN109644432B/zh
Priority to PCT/CN2016/113686 priority patent/WO2018120103A1/zh
Priority to TW106142938A priority patent/TW201824930A/zh
Publication of WO2018120103A1 publication Critical patent/WO2018120103A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal

Definitions

  • the present application relates to the field of communications and, more particularly, to a method and apparatus for random access in the field of communications.
  • a carrier bandwidth of a cell may be 20 MHz, 15 MHz, 10 MHz, 5 MHz, or 1.4 MHz.
  • the network device is The allocated working bandwidth is the carrier bandwidth of the cell, that is, the system bandwidth.
  • the carrier bandwidth of one cell may be large, such as hundreds of megahertz or even gigahertz. For most terminal devices, their capabilities cannot support the full carrier bandwidth. The operating bandwidth supported by these terminal devices may be much smaller than the carrier bandwidth.
  • the existing solution is to allocate the initial access bandwidth to the terminal device when the terminal device performs the initial access. After the terminal device completes the initial access, the network device reports its own capability to the network device. The network device reconfigures a working bandwidth by the capability of the terminal device and the system load, and the subsequent service transmission related to the terminal device can be performed on the working bandwidth until the network device notifies the terminal device to change the working bandwidth.
  • Such a method makes the terminal device excessively congested within the initial access bandwidth, which is disadvantageous to the balanced load on different bandwidths of the system, and also requires the network device to notify the terminal device of the new working bandwidth through additional signaling, and the signaling overhead is large. .
  • the method and apparatus for random access provided by the embodiments of the present invention can save signaling overhead, and at the same time, the terminal equipment is shunted in different frequency domains during random access, thereby improving user experience.
  • a first aspect provides a method for random access, including: determining, by a terminal device, a target random access resource from at least one candidate random access resource according to a bandwidth that the terminal device can support;
  • the terminal device sends the random access signal to the network device by using the target random access resource.
  • At least one candidate random access resource may correspond to at least one bandwidth, and the specific corresponding manner may be one-to-one or multiple-to-one, that is, one candidate random access resource may correspond to one bandwidth, or may be A plurality of candidate random access resources (ie, a set of candidate random access resources) correspond to one bandwidth, which is not limited in this embodiment of the present application.
  • the terminal device needs to first determine candidate random access resource packets, and then select any candidate random access resources from the set of candidate random access resources to send random access. signal.
  • the corresponding relationship between the at least one candidate random access resource and the at least one bandwidth may be agreed by the protocol in advance, or the network device may notify the terminal device by using the system information, which is not limited in this embodiment of the present application.
  • the terminal device selects the target random access resource from the at least one candidate random access resource to send the random access signal to the network device according to the bandwidth that the terminal device can support, so that The network device can allocate the working bandwidth that matches the capability of the terminal device to the terminal device according to the bandwidth corresponding to the target random access resource, and the network device can directly send the random access to the terminal device by using the working bandwidth of the terminal device.
  • the working bandwidth of the terminal device is adjusted by the additional signaling between the terminal device and the network device after the random access, which can save signaling overhead, and simultaneously perform the terminal device in different frequency domains during random access. Diverting to improve the user experience.
  • the at least one information of each candidate random access resource in the at least one candidate random access resource is different from each other:
  • Time domain resources frequency domain resources, and preamble sequences.
  • one candidate random access resource corresponds to one bandwidth
  • at least one of a time domain resource, a frequency domain resource, and a preamble sequence corresponding to each candidate random access resource is different from each other in a group of candidates.
  • the random access resource corresponds to one bandwidth
  • at least one of the time domain resource, the frequency domain resource, and the preamble sequence corresponding to each group of candidate random access resources are different from each other, so that the terminal device and the network device can be enabled. Determining a corresponding bandwidth according to the candidate random access resource, or determining a corresponding candidate random access resource or candidate random access resource group according to the bandwidth.
  • the terminal device determines a target from the at least one candidate random access resource according to a bandwidth that the terminal device can support Random access resources, including:
  • the terminal device determines the candidate random access resource corresponding to the working bandwidth as the target random access resource.
  • the terminal device since the bandwidth that the terminal device can support is not necessarily included in the at least one bandwidth, the terminal device needs to determine a new bandwidth from the at least one bandwidth according to the bandwidth that the terminal device can support. That is, the subsequent working bandwidth of the terminal device.
  • the terminal device can determine the working bandwidth of the terminal device according to the bandwidth that the terminal device can support in a plurality of manners, which is not limited in this embodiment of the present application.
  • the terminal device from the at least one candidate random access resource, according to a bandwidth that the terminal device can support Determining the working bandwidth of the terminal device in the corresponding at least one bandwidth, including:
  • the terminal device determines, as the working bandwidth, any bandwidth of the at least one bandwidth that is less than or equal to a bandwidth that the terminal device can support.
  • the terminal device from the at least one candidate random access resource, according to a bandwidth that the terminal device can support Determining the working bandwidth of the terminal device in the corresponding at least one bandwidth, including:
  • the terminal device determines, as the working bandwidth, a maximum bandwidth of the at least one bandwidth that is less than or equal to a bandwidth that the terminal device can support.
  • the terminal device may directly determine, as the working bandwidth, the maximum bandwidth of the at least one bandwidth that is less than or equal to the bandwidth that the terminal device can support. Such a selection method can ensure that the working bandwidth of the terminal device is maximized, so as to maximize the capability of the terminal device, thereby improving the user experience.
  • the terminal device is randomly connected to the at least one candidate according to a bandwidth that the terminal device can support Before determining the working bandwidth of the terminal device in the at least one bandwidth corresponding to the resource, the method further includes:
  • the terminal device receives the indication information sent by the network device, where the indication information is used to indicate a determining manner of the working bandwidth;
  • Determining, by the terminal device, the working bandwidth of the terminal device from at least one bandwidth corresponding to the at least one candidate random access resource according to a bandwidth that the terminal device can support include:
  • the terminal device determines the working bandwidth from the at least one bandwidth according to the indication information and a bandwidth that the terminal device can support.
  • the determining, by the terminal device, the foregoing two determining manners of the working bandwidth according to the bandwidth that the terminal device can support may be agreed by the protocol in advance, or the indication information may be sent by the network device to indicate the terminal device, which is not used by the embodiment of the present application. limited.
  • the network device may send the indication information to the terminal device to indicate that the terminal device determines the working bandwidth, the terminal device receives the indication information, determines, according to the indication information, what determination manner is adopted, and according to the terminal, The bandwidth that the device can support determines the working bandwidth.
  • the indication information may be carried in system information that is sent by the network device to the terminal device.
  • the terminal device after the terminal device sends the random access signal to the network device by using the target random access resource, the method also includes:
  • the terminal device receives a random access response that is sent by the network device according to the random access signal on the working bandwidth.
  • the network device may directly send a random access response to the terminal device on the working bandwidth, and correspondingly, the terminal device may receive the network.
  • the random access response sent by the device over the working bandwidth may be directly sent to the terminal device on the working bandwidth.
  • the method further includes:
  • the terminal device receives downlink control information sent by the network device, where the downlink control information is used to schedule the random access response, and the downlink control information is transmitted on any one of the following frequency resources:
  • Receiving, by the terminal device, a random access response that is sent by the network device according to the random access signal on the working bandwidth including:
  • the terminal device receives the random access response according to the downlink control information.
  • the downlink control information is used to schedule the random access response
  • the downlink control information may be sent before the random access response, or may be The device access response is sent at the same time, which is not limited in this embodiment of the present application.
  • the method before the receiving, by the terminal device, the downlink control information that is sent by the network device, the method further includes:
  • the terminal device includes:
  • the terminal device receives the downlink control information on a frequency resource indicated by the first system information.
  • the network device may indicate, by using the first system message, the frequency resource that transmits the downlink control information to the terminal device, where the terminal device receives the first system information, and receives the frequency resource indicated by the first system information. Downstream control information.
  • the terminal device may obtain the downlink control information by using a blind detection manner, which is not limited in this embodiment of the present application.
  • the terminal device determines, according to a bandwidth that the terminal device can support, from the at least one candidate random access resource. Before the target randomly accesses the resource, the method further includes:
  • Second system information that is sent by the network device, where the second system information is used to indicate a correspondence between the at least one candidate random access resource and the at least one bandwidth
  • Determining the target random access resource from the at least one candidate random access resource according to the bandwidth that the terminal device can support including:
  • the terminal device determines the target random access resource from at least one candidate random access resource according to the second system information and a bandwidth that the terminal device can support.
  • the network device may indicate, by using the second system information, the correspondence between the at least one candidate random access resource and the at least one bandwidth to the terminal device, where the terminal device receives the second system information, and according to the second system The information and the bandwidth that it can support, determine the target random access resources.
  • another random access method including: receiving, by a network device, a random access message sent by a terminal device by using a target random access resource in at least one candidate random access resource; No. the at least one candidate random access resource corresponds to at least one bandwidth;
  • the network device determines a bandwidth corresponding to the target random access resource as a working bandwidth of the terminal device.
  • the terminal device selects the target random access resource from the at least one candidate random access resource to send the random access signal to the network device according to the bandwidth that the terminal device can support, so that The network device can allocate the working bandwidth that matches the capability of the terminal device to the terminal device according to the bandwidth corresponding to the target random access resource, and the network device can directly send the random access to the terminal device by using the working bandwidth of the terminal device.
  • the working bandwidth of the terminal device is adjusted by the additional signaling between the terminal device and the network device after the random access, which can save signaling overhead, and simultaneously perform the terminal device in different frequency domains during random access. Diverting to improve the user experience.
  • the following at least one information of each candidate random access resource of the at least one candidate random access resource is different from each other:
  • Time domain resources frequency domain resources, and preamble sequences.
  • the network device receiving terminal device sends the target random access resource in the at least one candidate random access resource.
  • the method further includes:
  • the network device sends the indication information to the terminal device, where the indication information is used to instruct the terminal device to determine the working bandwidth.
  • the network device is configured to use a working bandwidth corresponding to the target random access resource according to the random access signal. Sending a random access response to the terminal device.
  • the method further includes:
  • the network device sends downlink control information to the terminal device, where the downlink control information is used to schedule the random access response, and the downlink control information is transmitted on any one of the following frequency resources:
  • the method before the network device sends the downlink control information to the terminal device, the method also includes:
  • the network device sends first system information to the terminal device, where the first system information is used to indicate a frequency resource for transmitting the downlink control information.
  • the network device receiving terminal device sends the target random access resource in the at least one candidate random access resource Before the random access signal, the method further includes:
  • the network device sends the second system information to the terminal device, where the second system information is used to indicate a correspondence between the at least one candidate random access resource and the at least one bandwidth.
  • 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.
  • a fifth aspect provides an apparatus for random access, comprising: a storage unit and a processor, the storage unit is configured to store an instruction, the processor is configured to execute an instruction stored by the memory, and when the processor executes the The execution of the memory causes the processor to perform the method of the first aspect or any of the possible implementations of the first aspect.
  • a sixth aspect provides an apparatus for random access, comprising: a storage unit and a processor, the storage unit is configured to store an instruction, the processor is configured to execute an instruction stored by the memory, and when the processor executes the The execution of the memory causes the processor to perform the method of any of the possible implementations of the second aspect or the second aspect.
  • a system for random access comprising the apparatus of any of the possible implementations of the third aspect or the third aspect, and any one of the fourth aspect or the fourth aspect Possible means of implementation; or
  • the system comprises the apparatus of any of the possible implementations of the fifth or fifth aspect, and the apparatus of any of the sixth or sixth aspect of the possible implementation.
  • 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, the calculation The machine program includes instructions for performing the method of the second aspect or any of the possible implementations of the second aspect.
  • FIG. 1 is a schematic structural diagram of a wireless communication system to which an embodiment of the present application is applied.
  • FIG. 2 is a schematic flowchart of a method for random access according to an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of another method for random access according to an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of an apparatus for random access according to an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of another apparatus for random access according to an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of another apparatus for random access according to an embodiment of the present application.
  • FIG. 7 is a schematic block diagram of another apparatus for random access according to an embodiment of the present application.
  • 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
  • UPD Universal Mobile Telecommunication System
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the 5G system or network may also be referred to as a New Radio ("NR”) system or network.
  • NR New Radio
  • FIG. 1 shows a wireless communication system 100 to which an embodiment of the present application is applied.
  • the wireless communication system 100 can include at least one network device 110.
  • Network device 100 can be a device that communicates with a terminal device.
  • Each network device 100 can provide communication coverage for a particular geographic area and can be associated with A terminal device (e.g., a UE) within the coverage area communicates.
  • the network device 100 may be a base station (Base Transceiver Station, abbreviated as "BTS”) in a GSM system or a CDMA system, or may be a base station (NodeB, abbreviated as "NB”) in a WCDMA system, or may be an LTE system.
  • BTS Base Transceiver Station
  • NodeB abbreviated as "NB”
  • the evolved base station (Evolutional Node B, referred to as “eNB” or “eNodeB”), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network device can It is a relay station, an access point, an in-vehicle device, a wearable device, a network side device in a future 5G network, or a network device in a future evolved PLMN.
  • eNB eNode B
  • CRAN Cloud Radio Access Network
  • 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 PLMN in a future evolution. Terminal equipment, etc.
  • SSIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Processing
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and may include other numbers of terminal devices within the coverage of each network device. 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.
  • network entities such as a network controller, a mobility management entity, and the like.
  • the embodiment of the present application is not limited thereto.
  • Random access is a necessary process for establishing a wireless link between a terminal device and a network device. Through random access, the terminal device and the network device obtain uplink synchronization. Network devices and terminal devices are only likely to perform regular data transmission and reception after the random access procedure is completed.
  • the terminal device can implement two basic functions through a random access procedure:
  • the random access procedure can be divided into competitive random access and non-competitive random access.
  • Competitive During the random access process, the terminal device randomly selects a random access preamble sequence, which may cause multiple terminal devices to use the same random access preamble sequence and cause random access collisions. Therefore, it is necessary to increase the subsequent random access competition resolution process.
  • non-competitive random access process the network device allocates a unique random access preamble sequence to each terminal device that needs to be randomly accessed, which avoids conflicts between different terminal devices in the access process, and thus can be fast. Complete random access.
  • the network device allocates the initial access bandwidth to the terminal device. After the terminal device completes the initial access, the network device reports the capability of the network device according to the capability of the terminal device. The network device reconfigures a working bandwidth for the network device, and subsequent service transmissions related to the terminal device can be performed on the working bandwidth until the network device notifies the terminal device to change the working bandwidth. Such a method requires the network device to notify the terminal device of the new working bandwidth through additional signaling, and the signaling overhead is large. In addition, if multiple terminal devices access the network device at the same time, the terminal devices in the initial access bandwidth may be overcrowded, which is not conducive to the balanced load on different bandwidths of the system.
  • FIG. 2 is a schematic flowchart of a method 200 for random access provided by an embodiment of the present application. As shown in FIG. 2, the method 200 includes:
  • the terminal device determines, according to the bandwidth that the terminal device can support, the target random access resource from the at least one candidate random access resource.
  • the terminal device sends the random access signal to the network device by using the target random access resource.
  • the terminal device may first determine, according to its own capability, a bandwidth that the terminal device can support, and then, according to the bandwidth that the terminal device can support, from the at least one candidate random access resource.
  • the target random access resource is selected, and the random access resource is used to send a random access signal to the network device.
  • At least one candidate random access resource may correspond to at least one bandwidth, and the specific corresponding manner may be one-to-one or multiple-to-one, that is, one candidate random access resource may correspond to one bandwidth, or may be A plurality of candidate random access resources (ie, a set of candidate random access resources) correspond to one bandwidth, which is not limited in this embodiment of the present application.
  • the terminal device needs to first determine candidate random access resource packets, and then select any candidate random access resources from the set of candidate random access resources to send random access. signal.
  • the correspondence between the at least one candidate random access resource and the at least one bandwidth may be agreed by the protocol in advance, or the network device may notify the terminal device by using the system information. This embodiment of the present application does not limit this.
  • the terminal device selects the target random access resource from the at least one candidate random access resource to send the random access signal to the network device according to the bandwidth that the terminal device can support, so that The network device can allocate the working bandwidth that matches the capability of the terminal device to the terminal device according to the bandwidth corresponding to the target random access resource, and the network device can directly send the random access to the terminal device by using the working bandwidth of the terminal device.
  • the working bandwidth of the terminal device is adjusted by the additional signaling between the terminal device and the network device after the random access, which can save signaling overhead, and simultaneously perform the terminal device in different frequency domains during random access. Diverting to improve the user experience.
  • FIG. 3 is a schematic flowchart of another method 300 for random access provided by an embodiment of the present application. As shown in FIG. 3, the method 300 includes:
  • the network device receives a random access signal that is sent by the terminal device by using the target random access resource in the at least one candidate random access resource, where the at least one candidate random access resource corresponds to the at least one bandwidth.
  • the network device determines, as the working bandwidth of the terminal device, a bandwidth corresponding to the target random access resource.
  • the method further includes: the network device according to the random access signal, And transmitting a random access response to the terminal device on a working bandwidth corresponding to the target random access resource.
  • the network device receives the random access signal, and randomly connects the target according to the target random access resource used by the terminal device.
  • the working bandwidth corresponding to the incoming resource is determined as the working bandwidth of the terminal device, and the random access signal may also be sent to the terminal device on the working bandwidth.
  • At least one candidate random access resource may correspond to at least one bandwidth, and the specific corresponding manner may be one-to-one or multiple-to-one, that is, one candidate random access resource may correspond to one bandwidth, or may be A plurality of candidate random access resources (ie, a set of candidate random access resources) correspond to one bandwidth, which is not limited in this embodiment of the present application.
  • the terminal device needs to first determine candidate random access resource packets, and then select any candidate random access resources from the set of candidate random access resources to send random access. signal.
  • the correspondence between the at least one candidate random access resource and the at least one bandwidth It can be agreed in advance by the protocol, or the network device can notify the terminal device through the system information, which is not limited by the embodiment of the present application.
  • the terminal device selects the target random access resource from the at least one candidate random access resource to send the random access signal to the network device according to the bandwidth that the terminal device can support, so that The network device can allocate the working bandwidth that matches the capability of the terminal device to the terminal device according to the bandwidth corresponding to the target random access resource, and the network device can directly send the random access to the terminal device by using the working bandwidth of the terminal device.
  • the working bandwidth of the terminal device is adjusted by the additional signaling between the terminal device and the network device after the random access, which can save signaling overhead, and simultaneously perform the terminal device in different frequency domains during random access. Diverting to improve the user experience.
  • the following at least one information of each candidate random access resource in the at least one candidate random access resource is different from each other:
  • Time domain resources frequency domain resources, and preamble sequences.
  • each candidate random access resource in the at least one candidate random access resource may include at least one of a time domain resource, a frequency domain resource, and a preamble sequence, and each of the at least one candidate random access resource At least one of the time domain resource, the frequency domain resource, and the preamble sequence of the candidate random access resource are different from each other.
  • one candidate random access resource corresponds to one bandwidth
  • at least one of a time domain resource, a frequency domain resource, and a preamble sequence corresponding to each candidate random access resource is different from each other in a group of candidates.
  • the random access resource corresponds to one bandwidth
  • at least one of the time domain resource, the frequency domain resource, and the preamble sequence corresponding to each group of candidate random access resources are different from each other, so that the terminal device and the network device can be enabled. Determining a corresponding bandwidth according to the candidate random access resource, or determining a corresponding candidate random access resource or candidate random access resource group according to the bandwidth.
  • the system bandwidth of a cell may be divided into multiple different blocks, and one block may be a physical resource block ("Physical Resource Block” (referred to as "PRB") or multiple PRBs.
  • PRB Physical Resource Block
  • the system bandwidth is divided into six blocks, namely B0, B1, B2, B3, B4, and B5, each block being 20 MHz, wherein the synchronization channel is located in the fourth block B3.
  • the at least one candidate random access resource corresponding to the at least one bandwidth may specifically be the following six situations:
  • the first set of candidate random access resources is located at B3, and the working bandwidth supported by the terminal device that uses any of the first set of candidate random access resources for random access is B3;
  • the second set of candidate random access resources is located at B2, and the working bandwidth supported by the terminal device that performs random access using any of the second set of candidate random access resources is B2+B3;
  • the third group of candidate random access resources is located at B4, and the working bandwidth supported by the terminal device that performs random access using any of the third group of candidate random access resources is B2+B3+B4;
  • the fourth group of candidate random access resources is located at B5, and the working bandwidth supported by the terminal device that uses any of the fourth group of candidate random access resources for random access is B2+B3+B4+B5;
  • the fifth group of candidate random access resources is located at B1, and the working bandwidth supported by the terminal device that uses any of the fifth group of candidate random access resources for random access is B1+B2+B3+B4+B5;
  • the sixth group of candidate random access resources is located at B0, and the working bandwidth supported by the terminal device that performs random access using any of the sixth group of candidate random access resources is B0+B1+B2+B3+B4+B5.
  • the foregoing implementation manner is only a case where the frequency domain resources of at least one candidate random access resource are different from each other.
  • the frequency domain resources of the at least one candidate random access resource are the same, the time domain resources and/or the preamble sequences of each candidate random access resource in the at least one candidate random access resource are different from each other, as long as the foregoing six groups correspond to each other.
  • the candidate random access resources do not overlap each other, and the embodiment of the present application does not limit this.
  • each group of candidate random access resources must be within the working bandwidth corresponding to the group of candidate random access resources, for example, the second group of candidates is randomly connected. Incoming resources must be allocated somewhere in B2+B3 and cannot be assigned to other locations.
  • the terminal device determines the target random access resource from the at least one candidate random access resource according to the bandwidth that the terminal device can support, including:
  • the terminal device determines the candidate random access resource corresponding to the working bandwidth as the target random access resource.
  • the terminal device may determine the working bandwidth of the terminal device from the at least one bandwidth according to the bandwidth that the terminal device can support, and determine the candidate random access resource corresponding to the working bandwidth as the target random access resource.
  • the terminal device since the bandwidth that the terminal device can support is not necessarily included in the at least one bandwidth, the terminal device needs to be at least one according to the bandwidth that the terminal device can support.
  • the working bandwidth of the terminal device is determined in the bandwidth.
  • the terminal device can determine the working bandwidth according to the bandwidth that the terminal device can support in a plurality of manners, which is not limited in this embodiment of the present application.
  • the terminal device determines, according to the bandwidth that the terminal device can support, the working bandwidth of the terminal device from the at least one bandwidth corresponding to the at least one candidate random access resource, including:
  • the terminal device determines, as the working bandwidth, any bandwidth of the at least one bandwidth that is less than or equal to a bandwidth that the terminal device can support.
  • the terminal device may determine, as the working bandwidth, any bandwidth of the at least one bandwidth that is less than or equal to a bandwidth that the terminal device can support.
  • the bandwidths of the first group to the sixth group respectively are 20 MHz, 40 MHz, 60 MHz, 80 MHz, 100 MHz, and 120 MHz
  • the terminal device may determine 20 MHz or 40 MHz as the working bandwidth, that is, the terminal device may arbitrarily select one candidate random access resource from the first group of candidate random access resources corresponding to 20 MHz as the target random access resource.
  • a candidate random access resource may be arbitrarily selected from the second set of candidate random access resources corresponding to the 40 MHz as the target random access resource, which is not limited in this embodiment of the present application.
  • the terminal device determines, according to the bandwidth that the terminal device can support, the working bandwidth of the terminal device from the at least one bandwidth corresponding to the at least one candidate random access resource, including:
  • the terminal device determines, as the working bandwidth, a maximum bandwidth of the at least one bandwidth that is less than or equal to a bandwidth that the terminal device can support.
  • the terminal device may directly determine the maximum bandwidth of the at least one bandwidth that is less than or equal to the bandwidth that the terminal device can support as the working bandwidth. Such a selection method can ensure that the working bandwidth of the terminal device is maximized, so as to maximize the capability of the terminal device, thereby improving the user experience.
  • the terminal device may directly determine 40 MHz as the working bandwidth, that is, the terminal device may correspond to 40 MHz. Any one of the second set of candidate random access resources is arbitrarily selected as the target random access resource.
  • the terminal device is capable of supporting according to the terminal device.
  • the method further includes: before determining the working bandwidth of the terminal device from the at least one bandwidth corresponding to the at least one candidate random access resource, the method further includes:
  • the terminal device receives the indication information sent by the network device, where the indication information is used to indicate a determining manner of the working bandwidth;
  • the method before the receiving, by the network device, the random access signal sent by the target random access resource in the at least one candidate random access resource, the method further includes:
  • Determining, by the terminal device, the working bandwidth of the terminal device from the at least one bandwidth corresponding to the at least one candidate random access resource, according to the bandwidth that the terminal device can support including:
  • the terminal device determines a working bandwidth from the at least one bandwidth according to the indication information and a bandwidth that the terminal device can support.
  • the determining, by the terminal device, the foregoing two determining manners of the working bandwidth according to the bandwidth that the terminal device can support may be agreed by the protocol in advance, or the indication information may be sent by the network device to indicate the terminal device, which is not used by the embodiment of the present application. limited.
  • the network device may send the indication information to the terminal device to indicate that the terminal device determines the working bandwidth, the terminal device receives the indication information, determines, according to the indication information, what determination manner is adopted, and according to the terminal device, can support the The bandwidth determines the working bandwidth.
  • the indication information may be carried in system information that is sent by the network device to the terminal device.
  • the method further includes:
  • the terminal device receives a random access response that is sent by the network device according to the random access signal on the working bandwidth.
  • the network device may directly send a random access response to the terminal device on the working bandwidth, and correspondingly, the terminal device may receive the network.
  • the random access response sent by the device over the working bandwidth may be directly sent to the terminal device on the working bandwidth.
  • the method further includes:
  • the terminal device receives downlink control information sent by the network device, where the downlink control information is used to schedule the random access response, and the downlink control information is transmitted on any one of the following frequency resources:
  • the network device sends the downlink control information to the terminal device
  • Receiving, by the terminal device, a random access response that is sent by the network device according to the random access signal on the working bandwidth including:
  • the terminal device receives the random access response according to the downlink control information.
  • the network device since the random access response is sent on the data channel, the network device needs to send downlink control information to the terminal device by using a control channel, where the downlink control information is used to schedule the random access response.
  • the downlink control information may be transmitted on any one of the frequency resources of the working bandwidth, the frequency resource stipulated by the protocol, or the frequency resource configured by the network device, which is not limited in this embodiment of the present application.
  • the downlink control information is used to schedule the random access response
  • the downlink control information may be sent before the random access response, or may be sent simultaneously with the random access response.
  • the application embodiment does not limit this.
  • the method before the receiving, by the terminal device, the downlink control information sent by the network device, the method further includes:
  • the method further includes:
  • the terminal device includes:
  • the terminal device receives the downlink control information on a frequency resource indicated by the first system information.
  • the network device may indicate, by using the first system message, the frequency resource that transmits the downlink control information to the terminal device, where the terminal device receives the first system information, and receives the frequency resource indicated by the first system information. Downstream control information.
  • the terminal device may obtain the downlink control information by using a blind detection manner, which is not limited in this embodiment of the present application.
  • the method before the determining, by the terminal device, the target random access resource from the at least one candidate random access resource according to the bandwidth that the terminal device can support, the method also includes:
  • Second system information that is sent by the network device, where the second system information is used to indicate a correspondence between the at least one candidate random access resource and the at least one bandwidth
  • the method before the receiving, by the network device, the random access signal sent by the target random access resource in the at least one candidate random access resource, the method further includes:
  • Determining the target random access resource from the at least one candidate random access resource according to the bandwidth that the terminal device can support including:
  • the terminal device determines the target random access resource from at least one candidate random access resource according to the second system information and a bandwidth that the terminal device can support.
  • the network device may indicate, by using the second system information, the correspondence between the at least one candidate random access resource and the at least one bandwidth to the terminal device, where the terminal device receives the second system information, and according to the second system The information and the bandwidth that it can support, determine the target random access resources.
  • the corresponding relationship between the at least one candidate random access resource and the at least one bandwidth may also be a protocol, which is not limited by the embodiment of the present application.
  • FIG. 4 shows an apparatus 400 for random access provided by an embodiment of the present application.
  • the device 400 includes:
  • the determining unit 410 is configured to determine, according to the bandwidth that the device can support, the target random access resource from the at least one candidate random access resource;
  • the sending unit 420 is configured to send the random access signal to the network device by using the target random access resource.
  • the device for random access in the embodiment of the present application selects a target random access resource from the at least one candidate random access resource to the network according to the bandwidth that the terminal device can support according to the bandwidth that the terminal device can support.
  • the network device sends a random access signal, so that the network device can allocate the working bandwidth that matches the capability of the terminal device according to the bandwidth corresponding to the target random access resource, and the network device can directly adopt the working of the terminal device.
  • the bandwidth sends a random access response to the terminal device, which prevents the terminal device and the network device from adjusting the working bandwidth of the terminal device by using additional signaling after the random access, which can save signaling overhead and at the same time during random access.
  • the terminal device is offloaded in different frequency domains to improve the user experience.
  • the following at least one information of each candidate random access resource in the at least one candidate random access resource is different from each other: a time domain resource, a frequency domain resource, and a preamble sequence.
  • the determining unit 410 is specifically configured to: determine, according to a bandwidth that the terminal device can support, the working bandwidth of the terminal device from at least one bandwidth corresponding to the at least one candidate random access resource; The candidate random access resource corresponding to the working bandwidth is determined as the target random access resource.
  • the determining unit 410 is specifically configured to: determine, as the working bandwidth, any bandwidth of the at least one bandwidth that is less than or equal to a bandwidth that the terminal device can support.
  • the determining unit 410 is specifically configured to: determine, by the terminal device, a maximum bandwidth of the at least one bandwidth that is less than or equal to a bandwidth that the terminal device can support, as the working bandwidth.
  • the device further includes: a first receiving unit, configured to determine, according to the bandwidth that the terminal device can support, from at least one bandwidth corresponding to the at least one candidate random access resource Before receiving the working bandwidth of the terminal device, receiving the indication information sent by the network device, where the indication information is used to indicate the determining manner of the working bandwidth; the determining unit 410 is specifically configured to: according to the indication information and the terminal The bandwidth that the device can support, determining the working bandwidth from the at least one bandwidth.
  • the device further includes: a second receiving unit, configured to receive, according to the random access signal, the network device after sending the random access signal to the network device by using the target random access resource A random access response sent over the working bandwidth.
  • a second receiving unit configured to receive, according to the random access signal, the network device after sending the random access signal to the network device by using the target random access resource A random access response sent over the working bandwidth.
  • the second receiving unit is further configured to: receive downlink control information sent by the network device, where the downlink control information is used to schedule the random access response, where the downlink control information is any one of the following Transmission on the frequency resource: all or part of the frequency resource of the working bandwidth, the frequency resource agreed by the protocol, or the frequency resource configured by the network device; the second receiving unit is specifically configured to: receive the location according to the downlink control information Random access response.
  • the second receiving unit is further configured to: before receiving the downlink control information sent by the network device, receive first system information that is sent by the network device, where the first system information is used to indicate Transmitting the frequency resource of the downlink control information; the second receiving unit is specifically configured to: receive the downlink control information on a frequency resource indicated by the first system information.
  • the device further includes: a third receiving unit, configured to receive the target random access resource from the at least one candidate random access resource according to the bandwidth that the terminal device can support, according to the bandwidth that the terminal device can support a second system information that is sent by the network device, where the second system information is used to indicate a correspondence between the at least one candidate random access resource and the at least one bandwidth; the determining unit 410 is specifically configured to: according to the second system The information and the bandwidth that the terminal device can support determine the target random access resource from the at least one candidate random access resource.
  • a third receiving unit configured to receive the target random access resource from the at least one candidate random access resource according to the bandwidth that the terminal device can support, according to the bandwidth that the terminal device can support a second system information that is sent by the network device, where the second system information is used to indicate a correspondence between the at least one candidate random access resource and the at least one bandwidth
  • the determining unit 410 is specifically configured to: according to the second system The information and the bandwidth that the terminal device can support determine the target random access resource from
  • the device 400 may be specifically the terminal device in the foregoing embodiment 200, and the device 400 may be used to perform various processes and/or corresponding to the terminal device in the foregoing method embodiment 200. Steps, to avoid repetition, will not be repeated here.
  • FIG. 5 shows another apparatus 500 for random access provided by an embodiment of the present application.
  • the device 500 includes:
  • the receiving unit 510 is configured to receive, by the terminal device, a random access signal that is sent by the target random access resource in the at least one candidate random access resource, where the at least one candidate random access resource corresponds to the at least one bandwidth;
  • the determining unit 520 is configured to determine a bandwidth corresponding to the target random access resource as a working bandwidth.
  • the device for random access in the embodiment of the present application by using the bandwidth that the terminal device can support, selects a target random access resource from the at least one candidate random access resource to send a random access signal to the network device,
  • the network device can allocate the working bandwidth that matches the capability of the terminal device to the terminal device according to the bandwidth corresponding to the target random access resource, and the network device can directly send the random access to the terminal device by using the working bandwidth of the terminal device.
  • the working bandwidth of the terminal device is adjusted by the additional signaling between the terminal device and the network device after the random access, which can save signaling overhead, and simultaneously perform the terminal device in different frequency domains during random access. Diverting to improve the user experience.
  • the following at least one information of each candidate random access resource in the at least one candidate random access resource is different from each other: a time domain resource, a frequency domain resource, and a preamble sequence.
  • the device further includes: a first sending unit, configured to collect at the receiving terminal device Before the random access signal sent by the target random access resource in the at least one candidate random access resource, the indication information is sent to the terminal device, where the indication information is used to indicate the determining manner of the working bandwidth.
  • a first sending unit configured to collect at the receiving terminal device Before the random access signal sent by the target random access resource in the at least one candidate random access resource, the indication information is sent to the terminal device, where the indication information is used to indicate the determining manner of the working bandwidth.
  • the device further includes: a second sending unit, configured to send, according to the random access signal, a random access response to the terminal device on a working bandwidth corresponding to the target random access resource.
  • a second sending unit configured to send, according to the random access signal, a random access response to the terminal device on a working bandwidth corresponding to the target random access resource.
  • the second sending unit is further configured to: send downlink control information to the terminal device, where the downlink control information is used to schedule the random access response, where the downlink control information is in any one of the following frequencies Transmission over resources: all or part of the frequency resources of the working bandwidth, frequency resources agreed by the protocol, or frequency resources configured by the device.
  • the second sending unit is further configured to: before the sending the downlink control information to the terminal device, send, to the terminal device, first system information, where the first system information is used to indicate a transmission station.
  • the frequency resource of the downlink control information is further configured to: before the sending the downlink control information to the terminal device, send, to the terminal device, first system information, where the first system information is used to indicate a transmission station.
  • the frequency resource of the downlink control information is further configured to: before the sending the downlink control information to the terminal device, send, to the terminal device, first system information, where the first system information is used to indicate a transmission station.
  • the frequency resource of the downlink control information is further configured to: before the sending the downlink control information to the terminal device, send, to the terminal device, first system information, where the first system information is used to indicate a transmission station.
  • the device further includes: a third sending unit, configured to: before the receiving terminal device uses the random access signal sent by the target random access resource in the at least one candidate random access resource, to the terminal The device sends the second system information, where the second system information is used to indicate a correspondence between the at least one candidate random access resource and the at least one bandwidth.
  • a third sending unit configured to: before the receiving terminal device uses the random access signal sent by the target random access resource in the at least one candidate random access resource, to the terminal The device sends the second system information, where the second system information is used to indicate a correspondence between the at least one candidate random access resource and the at least one bandwidth.
  • the device 500 may be specifically the network device in the foregoing embodiment 300, and the device 500 may be used to perform various processes corresponding to the network device in the foregoing method embodiment 300 and/or Steps, to avoid repetition, will not be repeated here.
  • apparatus 400 and apparatus 500 herein may be embodied in the form of functional units.
  • 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
  • processors e.g., a shared processor, a proprietary processor, or a group.
  • memory merge logic, and/or other suitable components that support the described functionality.
  • FIG. 6 is a schematic block diagram of an apparatus 600 in accordance with an embodiment of the present application. As shown in FIG. 6, the apparatus 600 includes a processor 610 and a transceiver 620.
  • the processor 610 is configured to determine a target random access resource from the at least one candidate random access resource according to a bandwidth that the device can support; the transceiver 620 is configured to use the target random access resource to the network device. Send a random access signal.
  • each candidate random access resource of the at least one candidate random access resource At least one of the following information is different from each other: a time domain resource, a frequency domain resource, and a preamble sequence.
  • the processor 610 is specifically configured to: determine, according to a bandwidth that the terminal device can support, the working bandwidth of the terminal device from at least one bandwidth corresponding to the at least one candidate random access resource; The candidate random access resources corresponding to the working bandwidth are determined as the target random access resources.
  • the processor 610 is specifically configured to determine, as the working bandwidth, any bandwidth of the at least one bandwidth that is less than or equal to a bandwidth that the terminal device can support.
  • the processor 610 is specifically configured to: determine, by the terminal device, a maximum bandwidth of the at least one bandwidth that is less than or equal to a bandwidth that the terminal device can support, as the working bandwidth.
  • the transceiver 620 is further configured to: determine, according to the bandwidth that the terminal device can support, the working bandwidth of the terminal device from at least one bandwidth corresponding to the at least one candidate random access resource. And receiving the indication information sent by the network device, where the indication information is used to indicate a determining manner of the working bandwidth.
  • the processor 610 is specifically configured to: according to the indication information and a bandwidth that the terminal device can support, A working bandwidth is determined from the at least one bandwidth.
  • the transceiver 620 is further configured to: after the sending the random access signal to the network device by using the target random access resource, receiving, by the network device, the working bandwidth according to the random access signal. Random access response sent on.
  • the transceiver 620 is further configured to: receive downlink control information sent by the network device, where the downlink control information is used to schedule the random access response, where the downlink control information is in any one of the following frequency resources.
  • the upper transmission all or part of the frequency resource of the working bandwidth, the frequency resource agreed by the protocol, or the frequency resource configured by the network device; and receiving the random access response according to the downlink control information.
  • the transceiver 620 is further configured to: before receiving the downlink control information sent by the network device, receive first system information sent by the network device, where the first system information is used to indicate a transmission station. The frequency resource of the downlink control information; and the downlink control information is received on the frequency resource indicated by the first system information.
  • the transceiver 620 is further configured to: before the determining, according to the bandwidth that the terminal device can support, determining the target random access resource from the at least one candidate random access resource, receiving, by the network device, The second system information is used to indicate a correspondence between the at least one candidate random access resource and the at least one bandwidth; the processor 610 is specifically configured to: Determining the target random access resource from the at least one candidate random access resource according to the second system information and a bandwidth that the terminal device can support.
  • the device 600 may be specifically the terminal device in the foregoing embodiment 200, and the device 600 may be used to perform various processes and/or corresponding to the terminal device in the foregoing method embodiment 200. Steps, to avoid repetition, will not be repeated here.
  • apparatus 600 can also include a memory, which can include read only memory and random access memory, and provides 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 610 can be configured to execute instructions stored in a memory, and when the processor executes the instructions, the processor can perform various steps corresponding to the terminal device in the above method embodiments.
  • FIG. 7 is a schematic block diagram of an apparatus 700 in accordance with an embodiment of the present application. As shown in FIG. 7, the apparatus 700 includes a processor 710 and a transceiver 720.
  • the processor 710 is configured to receive a random access signal that is sent by the terminal device by using the target random access resource in the at least one candidate random access resource, where the at least one candidate random access resource corresponds to at least one bandwidth; The bandwidth corresponding to the target random access resource is determined as the working bandwidth.
  • the following at least one information of each candidate random access resource in the at least one candidate random access resource is different from each other: a time domain resource, a frequency domain resource, and a preamble sequence.
  • the transceiver 720 is further configured to send the indication information to the terminal device before the receiving terminal device uses the random access signal sent by the target random access resource in the at least one candidate random access resource,
  • the indication information is used to indicate a manner of determining the working bandwidth.
  • the transceiver 720 is configured to: after the bandwidth corresponding to the target random access resource is determined to be a working bandwidth, according to the random access signal, corresponding to the target random access resource. A random access response is sent to the terminal device on the working bandwidth.
  • the transceiver 720 is further configured to: send downlink control information to the terminal device, where the downlink control information is used to schedule the random access response, where the downlink control information is on any one of the following frequency resources. Transmission: all or part of the frequency resource of the working bandwidth, the frequency resource agreed by the protocol, or the frequency resource configured by the device.
  • the transceiver 720 is further configured to: before the sending the downlink control information to the terminal device, send, to the terminal device, first system information, where the first system information is used to indicate that the downlink is transmitted.
  • the frequency resource that controls the information is further configured to: before the sending the downlink control information to the terminal device, send, to the terminal device, first system information, where the first system information is used to indicate that the downlink is transmitted.
  • the frequency resource that controls the information is further configured to: before the sending the downlink control information to the terminal device, send, to the terminal device, first system information, where the first system information is used to indicate that the downlink is transmitted.
  • the frequency resource that controls the information is further configured to: before the sending the downlink control information to the terminal device, send, to the terminal device, first system information, where the first system information is used to indicate that the downlink is transmitted.
  • the frequency resource that controls the information is further configured to: before the sending the downlink control information to the terminal device, send, to the terminal device, first system information, where the
  • the transceiver 720 is further configured to send the second system to the terminal device before the receiving terminal device uses the random access signal sent by the target random access resource in the at least one candidate random access resource.
  • the second system information is used to indicate a correspondence between the at least one candidate random access resource and the at least one bandwidth.
  • the device 700 may be specifically the network device in the foregoing embodiment 300, and the device 700 may be used to perform various processes and/or corresponding to the network device in the foregoing method embodiment 300. Steps, to avoid repetition, will not be repeated here.
  • apparatus 700 can also include a memory, which can include read only memory and random access memory, and provides 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 710 can be configured to execute instructions stored in a memory, and when the processor executes the instructions, the processor can perform various steps corresponding to the network device 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), application specific integrated circuits (ASICs), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, 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 application 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 a memory, and the processor executes instructions in the memory, in combination with hardware to perform the steps of the above method. To avoid repetition, it will not be described in detail here.
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application.
  • the implementation process constitutes any limitation.
  • 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, and may be in an electrical, mechanical or other form.
  • 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 purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application 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 functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause 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 application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本申请实施例提供了一种用于随机接入的方法和装置，该方法包括：终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源；所述终端设备采用所述目标随机接入资源向网络设备发送随机接入信号。本申请实施例提供的用于随机接入的方法和装置，能够节省信令开销，同时在随机接入时对终端设备在不同频域上进行分流，提高用户体验。

Description

用于随机接入的方法和装置 技术领域
本申请涉及通信领域，并且更具体地，涉及通信领域中用于随机接入的方法和装置。
背景技术
在长期演进(Long Term Evolution，简称为“LTE”)系统中，一个小区的载波带宽可以是20MHz、15MHz、10MHz、5MHz或1.4MHz，一个普通类型的终端设备接入此小区，则网络设备为其分配的工作带宽就是该小区的载波带宽，即系统带宽。在第五代通信系统(5th-generation，简称为“5G”)中，一个小区的载波带宽可能会很大，例如上百兆赫，甚至上千兆赫。而对于大部分终端设备来说，其能力无法支持完整的载波带宽，这些终端设备所支持的工作带宽可能会远远小于载波带宽。
现有的方案都是在终端设备进行初始接入时，网络设备会先为该终端设备分配初始接入带宽，当终端设备完成初始接入后，通过给网络设备上报自身的能力，网络设备根据该终端设备的能力以及系统负载等情况给该网络设备重新配置一个工作带宽，后续和该终端设备相关的业务传输可以在这一工作带宽上进行，直到网络设备再通知该终端设备更改工作带宽。这样的方法使得在初始接入带宽内终端设备过分拥挤，不利于系统不同带宽上的均衡负载，而且还需要网络设备通过额外的信令来通知该终端设备新的工作带宽，信令开销较大。
发明内容
本申请实施例提供的用于随机接入的方法和装置，能够节省信令开销，同时在随机接入时对终端设备在不同频域上进行分流，提高用户体验。
第一方面，提供了一种用于随机接入的方法，包括：终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源；
所述终端设备采用所述目标随机接入资源向网络设备发送随机接入信号。
应理解，上述至少一个候选随机接入资源与至少一个带宽对应，具体的对应方式可以为一对一，也可以为多对一，即可以是一个候选随机接入资源对应一个带宽，也可以是多个候选随机接入资源(即一组候选随机接入资源)对应一个带宽，本申请实施例对此不作限定。在一组候选随机接入资源对应一个带宽的情况下，该终端设备需要先确定候选随机接入资源分组，再从该组候选随机接入资源中选取任一候选随机接入资源发送随机接入信号。
还应理解，上述至少一个候选随机接入资源与至少一个带宽的对应关系可以是协议提前约定的，也可以是网络设备通过系统信息告知终端设备的，本申请实施例对此不作限定。
本申请实施例的用于随机接入的方法，通过终端设备根据该终端设备能够支持的带宽，从至少一个候选随机接入资源中选择目标随机接入资源向网络设备发送随机接入信号，使得该网络设备能够根据目标随机接入资源对应的带宽为该终端设备分配与该终端设备的能力相匹配的工作带宽，该网络设备可以直接采用该终端设备的工作带宽向该终端设备发送随机接入响应，避免了终端设备与网络设备之间在随机接入之后通过额外的信令调整该终端设备的工作带宽，能够节省信令开销，同时在随机接入时对终端设备在不同频域上进行分流，提高用户体验。
在第一方面的第一种可能的实现方式中，所述至少一个候选随机接入资源中的每个候选随机接入资源的下列至少一种信息互不相同：
时域资源、频域资源和前导序列。
应理解，在一个候选随机接入资源对应一个带宽的情况下，每个候选随机接入资源所对应的时域资源、频域资源和前导序列中的至少一种互不相同，在一组候选随机接入资源对应一个带宽的情况下，每组候选随机接入资源所对应的时域资源、频域资源和前导序列中的至少一种互不相同，这样，才可以使终端设备和网络设备根据候选随机接入资源确定对应的带宽，或根据带宽确定对应的候选随机接入资源或候选随机接入资源分组。
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，所述终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源，包括：
所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽；
所述终端设备将所述工作带宽对应的候选随机接入资源确定为所述目标随机接入资源。
应理解，由于该终端设备能够支持的带宽并不一定包含在上述至少一个带宽中，这就需要该终端设备根据该终端设备能够支持的带宽从上述至少一个带宽中确定一个新的带宽，该带宽即为该终端设备后续的工作带宽。
还应理解，该终端设备可以通过多种方式根据该终端设备能够支持的带宽确定该终端设备的工作带宽，本申请实施例对此不作限定。
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，所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽，包括：
所述终端设备将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的任一带宽确定为所述工作带宽。
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，所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽，包括：
所述终端设备将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的最大带宽确定为所述工作带宽。
具体地，该终端设备可以直接将至少一个带宽中小于或等于所述终端设备能够支持的带宽的最大带宽确定为上述工作带宽。这样的选择方式能够保证该终端设备的工作带宽尽量最大，以便使该终端设备的能力达到最大化，从而提高用户体验。
结合第一方面的上述可能的实现方式，在第一方面的第五种可能的实现方式中，在所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽之前，所述方法还包括：
所述终端设备接收所述网络设备发送的指示信息，所述指示信息用于指示所述工作带宽的确定方式；
所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽，包 括：
所述终端设备根据所述指示信息以及所述终端设备能够支持的带宽，从所述至少一个带宽中确定所述工作带宽。
具体地，该终端设备根据该终端设备能够支持的带宽确定该工作带宽的上述两种确定方式可以通过协议提前约定，也可以通过网络设备发送指示信息指示该终端设备，本申请实施例对此不作限定。对于后者，该网络设备可以向该终端设备发送指示信息指示该终端设备确定该工作带宽的确定方式，该终端设备接收该指示信息，根据该指示信息确定采用何种确定方式，再根据该终端设备能够支持的带宽确定该工作带宽。
可选地，该指示信息可以携带在网络设备发送给终端设备的系统信息中。
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，在所述终端设备采用所述目标随机接入资源向网络设备发送随机接入信号之后，所述方法还包括：
所述终端设备接收所述网络设备根据所述随机接入信号在所述工作带宽上发送的随机接入响应。
具体地，该网络设备在根据目标随机接入资源确定了该终端设备的工作带宽之后，可以直接在该工作带宽上向该终端设备发送随机接入响应，对应地，该终端设备可以接收该网络设备在该工作带宽上发送的随机接入响应。
结合第一方面的上述可能的实现方式，在第一方面的第七种可能的实现方式中，所述方法还包括：
所述终端设备接收所述网络设备发送的下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：
所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述网络设备配置的频率资源；
所述终端设备接收所述网络设备根据所述随机接入信号在所述工作带宽上发送的随机接入响应，包括：
所述终端设备根据所述下行控制信息，接收所述随机接入响应。
应理解，由于该下行控制信息是为了调度该随机接入响应，因此，在一般情况下，该下行控制信息可以在该随机接入响应之前发送，也可以与该随 机接入响应同时发送，本申请实施例对此不作限定。
结合第一方面的上述可能的实现方式，在第一方面的第八种可能的实现方式中，在所述终端设备接收所述网络设备发送的下行控制信息之前，所述方法还包括：
所述终端设备接收所述网络设备发送的第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源；
所述终端设备接收所述网络设备发送的下行控制信息，包括：
所述终端设备在所述第一系统信息指示的频率资源上接收所述下行控制信息。
具体地，该网络设备可以通过第一系统消息向该终端设备指示传输上述下行控制信息的频率资源，该终端设备接收该第一系统信息，并在该第一系统信息指示的频率资源上接收该下行控制信息。
可选地，在该网络设备没有通过第一系统信息指示该下行控制信息的频率资源的情况下，该终端设备可以通过盲检的方式获取该下行控制信息，本申请实施例对此不作限定。
结合第一方面的上述可能的实现方式，在第一方面的第九种可能的实现方式中，在所述终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源之前，所述方法还包括：
所述终端设备接收所述网络设备发送的第二系统信息，所述第二系统信息用于指示所述至少一个候选随机接入资源与所述至少一个带宽的对应关系；
所述终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源，包括：
所述终端设备根据所述第二系统信息以及所述所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定所述目标随机接入资源。
具体地，该网络设备可以通过第二系统信息向该终端设备指示该至少一个候选随机接入资源与该至少一个带宽的对应关系，该终端设备接收该第二系统信息，并根据该第二系统信息以及自身能够支持的带宽，确定该目标随机接入资源。
第二方面，提供了另一种随机接入方法，包括：网络设备接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信 号，所述至少一个候选随机接入资源与至少一个带宽对应；
所述网络设备将与所述目标随机接入资源对应的带宽确定为所述终端设备的工作带宽。
本申请实施例的用于随机接入的方法，通过终端设备根据该终端设备能够支持的带宽，从至少一个候选随机接入资源中选择目标随机接入资源向网络设备发送随机接入信号，使得该网络设备能够根据目标随机接入资源对应的带宽为该终端设备分配与该终端设备的能力相匹配的工作带宽，该网络设备可以直接采用该终端设备的工作带宽向该终端设备发送随机接入响应，避免了终端设备与网络设备之间在随机接入之后通过额外的信令调整该终端设备的工作带宽，能够节省信令开销，同时在随机接入时对终端设备在不同频域上进行分流，提高用户体验。
在第二方面的第一种可能的实现方式中，所述至少一个候选随机接入资源中的每个候选随机接入资源的下列至少一种信息互不相同：
时域资源、频域资源和前导序列。
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，在所述网络设备接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，所述方法还包括：
所述网络设备向所述终端设备发送指示信息，所述指示信息用于指示所述终端设备确定所述工作带宽。
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，所述网络设备根据所述随机接入信号，在与所述目标随机接入资源对应的工作带宽上向所述终端设备发送随机接入响应。
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，所述方法还包括：
所述网络设备向所述终端设备发送下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：
所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述网络设备配置的频率资源。
结合第二方面的上述可能的实现方式，在第二方面的第五种可能的实现方式中，在所述网络设备向所述终端设备发送下行控制信息之前，所述方法 还包括：
所述网络设备向所述终端设备发送第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源。
结合第二方面的上述可能的实现方式，在第二方面的第六种可能的实现方式中，在所述网络设备接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，所述方法还包括：
所述网络设备向所述终端设备发送第二系统信息，所述第二系统信息用于指示所述至少一个候选随机接入资源与所述至少一个带宽的对应关系。
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，包括：存储单元和处理器，该存储单元用于存储指令，该处理器用于执行该存储器存储的指令，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，包括：存储单元和处理器，该存储单元用于存储指令，该处理器用于执行该存储器存储的指令，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，提供了一种用于随机接入的系统，该系统包括上述第三方面或第三方面的任一种可能实现方式中的装置以及第四方面或第四方面中的任一种可能实现方式中的装置；或者
该系统包括上述第五方面或第五方面的任一种可能实现方式中的装置以及第六方面或第六方面中的任一种可能实现方式中的装置。
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。
第九方面，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。
附图说明
图1是本申请实施例应用的无线通信系统的示意性架构图。
图2是本申请实施例的用于随机接入的方法的示意性流程图。
图3是本申请实施例的另一用于随机接入的方法的示意性流程图。
图4是本申请实施例的用于随机接入的装置的示意性框图。
图5是本申请实施例的另一用于随机接入的装置的示意性框图。
图6是本申请实施例的另一用于随机接入的装置的示意性框图。
图7是本申请实施例的另一用于随机接入的装置的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，简称为“GSM”)系统、码分多址(Code Division Multiple Access，简称为“CDMA”)系统、宽带码分多址(Wideband Code Division Multiple Access，简称为“WCDMA”)系统、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”)系统、LTE频分双工(Frequency Division Duplex，简称为“FDD”)系统、LTE时分双工(Time Division Duplex，简称为“TDD”)、通用移动通信系统(Universal Mobile Telecommunication System，简称为“UMTS”)、全球互联微波接入(Worldwide Interoperability for Microwave Access，简称为“WiMAX”)通信系统、未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)或未来的5G系统等。
可选地，5G系统或网络还可以称为新无线(New Radio，简称为“NR”)系统或网络。
图1示出了本申请实施例应用的无线通信系统100。该无线通信系统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。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 于该覆盖区域内的终端设备(例如UE)进行通信。该网络设备100可以是GSM系统或CDMA系统中的基站(Base Transceiver Station，简称为“BTS”)，也可以是WCDMA系统中的基站(NodeB，简称为“NB”)，还可以是LTE系统中的演进型基站(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PLMN中的网络设备等。
该无线通信系统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，该通信系统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，本申请实施例对此不做限定。
可选地，该无线通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例不限于此。
下面先介绍一下本申请实施例所涉及的随机接入流程。
随机接入是终端设备与网络设备之间建立无线链路的必经过程，通过随机接入，终端设备与网络设备取得上行同步。只有在随机接入过程完成后，网络设备和终端设备才可能进行常规的数据传输和接收。终端设备可以通过随机接入过程实现两个基本功能：
(1)取得与网络设备之间的上行同步；
(2)申请上行资源。
随机接入流程可以分为竞争性随机接入和非竞争性随机接入。在竞争性 随机接入过程中，终端设备随机选择随机接入前导序列，这可能导致多个终端设备使用同一个随机接入前导序列而导致随机接入冲突，因此需要增加后续的随机接入竞争解决流程。在非竞争性随机接入过程中，由网络设备为每个需要随机接入的终端设备分配一个唯一的随机接入前导序列，避免了不同的终端设备在接入过程中产生冲突，因而可以快速的完成随机接入。
在终端设备进行初始接入时，网络设备会先为该终端设备分配初始接入带宽，当终端设备完成初始接入后，通过给网络设备上报自身的能力，网络设备根据该终端设备的能力以及系统负载等情况给该网络设备重新配置一个工作带宽，后续和该终端设备相关的业务传输可以在这一工作带宽上进行，直到网络设备再通知该终端设备更改工作带宽。这样的方法需要网络设备通过额外的信令来通知该终端设备新的工作带宽，信令开销较大。此外，若同时有多个终端设备接入该网络设备，会使得在初始接入带宽内的终端设备过分拥挤，不利于系统不同带宽上的均衡负载。
图2示出了本申请实施例提供的用于随机接入的方法200的示意性流程图。如图2所示，该方法200包括：
S210，终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源；
S220，所述终端设备采用所述目标随机接入资源向网络设备发送随机接入信号。
具体地，在终端设备要进行随机接入之前，该终端设备可以先根据自身的能力，确定该终端设备能够支持的带宽，然后根据该终端设备能够支持的带宽，从至少一个候选随机接入资源中选择出目标随机接入资源，采用该目标随机接入资源向网络设备发送随机接入信号。
应理解，上述至少一个候选随机接入资源与至少一个带宽对应，具体的对应方式可以为一对一，也可以为多对一，即可以是一个候选随机接入资源对应一个带宽，也可以是多个候选随机接入资源(即一组候选随机接入资源)对应一个带宽，本申请实施例对此不作限定。在一组候选随机接入资源对应一个带宽的情况下，该终端设备需要先确定候选随机接入资源分组，再从该组候选随机接入资源中选取任一候选随机接入资源发送随机接入信号。
还应理解，上述至少一个候选随机接入资源与至少一个带宽的对应关系可以是协议提前约定的，也可以是网络设备通过系统信息告知终端设备的， 本申请实施例对此不作限定。
本申请实施例的用于随机接入的方法，通过终端设备根据该终端设备能够支持的带宽，从至少一个候选随机接入资源中选择目标随机接入资源向网络设备发送随机接入信号，使得该网络设备能够根据目标随机接入资源对应的带宽为该终端设备分配与该终端设备的能力相匹配的工作带宽，该网络设备可以直接采用该终端设备的工作带宽向该终端设备发送随机接入响应，避免了终端设备与网络设备之间在随机接入之后通过额外的信令调整该终端设备的工作带宽，能够节省信令开销，同时在随机接入时对终端设备在不同频域上进行分流，提高用户体验。
图3示出了本申请实施例提供的另一用于随机接入的方法300的示意性流程图。如图3所示，该方法300包括：
S310，网络设备接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号，所述至少一个候选随机接入资源与至少一个带宽对应；
S320，所述网络设备将与所述目标随机接入资源对应的带宽确定为所述终端设备的工作带宽。
可选地，在所述网络设备将与所述目标随机接入资源对应的带宽确定为所述终端设备的工作带宽之后，所述方法还包括：所述网络设备根据所述随机接入信号，在与所述目标随机接入资源对应的工作带宽上向所述终端设备发送随机接入响应。
具体地，在终端设备采用目标随机接入资源向网络设备发送随机接入信号之后，该网络设备接收该随机接入信号，并根据该终端设备采用的目标随机接入资源，将该目标随机接入资源对应的工作带宽确定为该终端设备的工作带宽，还可以在该工作带宽上向该终端设备发送随机接入信号。
应理解，上述至少一个候选随机接入资源与至少一个带宽对应，具体的对应方式可以为一对一，也可以为多对一，即可以是一个候选随机接入资源对应一个带宽，也可以是多个候选随机接入资源(即一组候选随机接入资源)对应一个带宽，本申请实施例对此不作限定。在一组候选随机接入资源对应一个带宽的情况下，该终端设备需要先确定候选随机接入资源分组，再从该组候选随机接入资源中选取任一候选随机接入资源发送随机接入信号。
还应理解，上述至少一个候选随机接入资源与至少一个带宽的对应关系 可以是协议提前约定的，也可以是网络设备通过系统信息告知终端设备的，本申请实施例对此不作限定。
本申请实施例的用于随机接入的方法，通过终端设备根据该终端设备能够支持的带宽，从至少一个候选随机接入资源中选择目标随机接入资源向网络设备发送随机接入信号，使得该网络设备能够根据目标随机接入资源对应的带宽为该终端设备分配与该终端设备的能力相匹配的工作带宽，该网络设备可以直接采用该终端设备的工作带宽向该终端设备发送随机接入响应，避免了终端设备与网络设备之间在随机接入之后通过额外的信令调整该终端设备的工作带宽，能够节省信令开销，同时在随机接入时对终端设备在不同频域上进行分流，提高用户体验。
作为一个可选实施例，所述至少一个候选随机接入资源中的每个候选随机接入资源的下列至少一种信息互不相同：
时域资源、频域资源和前导序列。
具体地，该至少一个候选随机接入资源中的每个候选随机接入资源可以包括时域资源、频域资源和前导序列中的至少一种，且该至少一个候选随机接入资源中每个候选随机接入资源的时域资源、频域资源和前导序列中的至少一种互不相同。
应理解，在一个候选随机接入资源对应一个带宽的情况下，每个候选随机接入资源所对应的时域资源、频域资源和前导序列中的至少一种互不相同，在一组候选随机接入资源对应一个带宽的情况下，每组候选随机接入资源所对应的时域资源、频域资源和前导序列中的至少一种互不相同，这样，才可以使终端设备和网络设备根据候选随机接入资源确定对应的带宽，或根据带宽确定对应的候选随机接入资源或候选随机接入资源分组。
在一种可能的实现方式中，一个小区的系统带宽可以分为多个不同的块，一个块可以是一个物理资源块(Physical Resource Block，简称为“PRB”)，也可以是多个PRB。例如，系统带宽分为6个块，分别为B0、B1、B2、B3、B4和B5，每个块20MHz，其中，同步信道位于第4个块B3。在这种情况下，上述至少一个候选随机接入资源与至少一个带宽对应具体可以为下列六种情况：
1.第一组候选随机接入资源位于B3，采用第一组候选随机接入资源中的任意资源进行随机接入的终端设备支持的工作带宽为B3；
2.第二组候选随机接入资源位于B2，采用第二组候选随机接入资源中的任意资源进行随机接入的终端设备支持的工作带宽为B2+B3；
3.第三组候选随机接入资源位于B4，采用第三组候选随机接入资源中的任意资源进行随机接入的终端设备支持的工作带宽为B2+B3+B4；
4.第四组候选随机接入资源位于B5，采用第四组候选随机接入资源中的任意资源进行随机接入的终端设备支持的工作带宽为B2+B3+B4+B5；
5.第五组候选随机接入资源位于B1，采用第五组候选随机接入资源中的任意资源进行随机接入的终端设备支持的工作带宽为B1+B2+B3+B4+B5；
6.第六组候选随机接入资源位于B0，采用第六组候选随机接入资源中的任意资源进行随机接入的终端设备支持的工作带宽为B0+B1+B2+B3+B4+B5。
应理解，上述实现方式仅仅为至少一个候选随机接入资源的频域资源互不相同的情况。在至少一个候选随机接入资源的频域资源相同时，该至少一个候选随机接入资源中每个候选随机接入资源的时域资源和/或前导序列互不相同，只要上述六个组对应的候选随机接入资源相互之间没有交集即可，本申请实施例对此不作限定。
还应理解，在上述候选随机接入资源为频域资源的情况下，每组候选随机接入资源必须在本组候选随机接入资源所对应的工作带宽内，例如，第二组候选随机接入资源必须分配在B2+B3中的某个位置，不能分配到其他位置。
作为一个可选实施例，所述终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源，包括：
所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽；
所述终端设备将所述工作带宽对应的候选随机接入资源确定为所述目标随机接入资源。
具体地，该终端设备可以根据该终端设备能够支持的带宽，从至少一个带宽中确定该终端设备的工作带宽，再将与该工作带宽对应的候选随机接入资源确定为该目标随机接入资源。
应理解，由于该终端设备能够支持的带宽并不一定包含在上述至少一个带宽中，这就需要该终端设备根据该终端设备能够支持的带宽从上述至少一 个带宽中确定该终端设备的工作带宽。
还应理解，该终端设备可以通过多种方式根据该终端设备能够支持的带宽确定该工作带宽，本申请实施例对此不作限定。
作为一个可选实施例，所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽，包括：
所述终端设备将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的任一带宽确定为所述工作带宽。
具体地，该终端设备可以将该至少一个带宽中小于或等于该终端设备能够支持的带宽的任一带宽确定为上述工作带宽。
例如，在上述可能的实现方式中，第一组至第六组分别对应的带宽为20MHz、40MHz、60MHz、80MHz、100MHz和120MHz，若该终端设备能够支持的带宽为W，且40≤W<60，那么该终端设备可以将20MHz或40MHz确定为上述工作带宽，即该终端设备可以从20MHz对应的第一组候选随机接入资源中任意选择一个候选随机接入资源作为目标随机接入资源，也可以从40MHz对应的第二组候选随机接入资源中任意选择一个候选随机接入资源作为目标随机接入资源，本申请实施例对此不作限定。
作为一个可选实施例，所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽，包括：
所述终端设备将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的最大带宽确定为所述工作带宽。
具体地，该终端设备可以直接将该至少一个带宽中小于或等于该终端设备能够支持的带宽的最大带宽确定为上述工作带宽。这样的选择方式能够保证该终端设备的工作带宽尽量最大，以便使该终端设备的能力达到最大化，从而提高用户体验。
例如，在上述可能的实现方式中，若该终端设备能够支持的带宽为W，且40≤W<60，那么该终端设备可以直接将40MHz确定为上述工作带宽，即该终端设备可以从40MHz对应的第二组候选随机接入资源中任意选择一个候选随机接入资源作为目标随机接入资源。
作为一个可选实施例，在所述终端设备根据所述终端设备能够支持的带 宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽之前，所述方法还包括：
所述终端设备接收所述网络设备发送的指示信息，所述指示信息用于指示所述工作带宽的确定方式；
则对应地，在所述网络设备接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，所述方法还包括：
所述网络设备向所述终端设备发送所述指示信息；
所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽，包括：
所述终端设备根据所述指示信息以及所述终端设备能够支持的带宽，从所述至少一个带宽中确定工作带宽。
具体地，该终端设备根据该终端设备能够支持的带宽确定该工作带宽的上述两种确定方式可以通过协议提前约定，也可以通过网络设备发送指示信息指示该终端设备，本申请实施例对此不作限定。对于后者，该网络设备可以向该终端设备发送指示信息指示该终端设备确定该工作带宽，该终端设备接收该指示信息，根据该指示信息确定采用何种确定方式，再根据该终端设备能够支持的带宽确定该工作带宽。可选地，该指示信息可以携带在网络设备发送给终端设备的系统信息中。
作为一个可选实施例，在所述终端设备采用所述目标随机接入资源向网络设备发送随机接入信号之后，所述方法还包括：
所述终端设备接收所述网络设备根据所述随机接入信号在所述工作带宽上发送的随机接入响应。
具体地，该网络设备在根据目标随机接入资源确定了该终端设备的工作带宽之后，可以直接在该工作带宽上向该终端设备发送随机接入响应，对应地，该终端设备可以接收该网络设备在该工作带宽上发送的随机接入响应。
作为一个可选实施例，所述方法还包括：
所述终端设备接收所述网络设备发送的下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：
所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述网络 设备配置的频率资源；
则对应地，所述网络设备向所述终端设备发送所述下行控制信息；
所述终端设备接收所述网络设备根据所述随机接入信号在所述工作带宽上发送的随机接入响应，包括：
所述终端设备根据所述下行控制信息，接收所述随机接入响应。
具体地，由于上述随机接入响应在数据信道上发送，因此，该网络设备需要通过控制信道向该终端设备发送下行控制信息，该下行控制信息用于调度该随机接入响应。该下行控制信息可以所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述网络设备配置的频率资源中的任意一种频率资源上传输，本申请实施例对此不作限定。
应理解，由于该下行控制信息是为了调度该随机接入响应，因此，在一般情况下，该下行控制信息可以在该随机接入响应之前发送，也可以与该随机接入响应同时发送，本申请实施例对此不作限定。
作为一个可选实施例，在所述终端设备接收所述网络设备发送的下行控制信息之前，所述方法还包括：
所述终端设备接收所述网络设备发送的第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源；
则对应地，在所述网络设备向所述终端设备发送下行控制信息之前，所述方法还包括：
所述网络设备向所述终端设备发送所述第一系统信息；
所述终端设备接收所述网络设备发送的下行控制信息，包括：
所述终端设备在所述第一系统信息指示的频率资源上接收所述下行控制信息。
具体地，该网络设备可以通过第一系统消息向该终端设备指示传输上述下行控制信息的频率资源，该终端设备接收该第一系统信息，并在该第一系统信息指示的频率资源上接收该下行控制信息。
可选地，在该网络设备没有通过第一系统信息指示该下行控制信息的频率资源的情况下，该终端设备可以通过盲检的方式获取该下行控制信息，本申请实施例对此不作限定。
作为一个可选实施例，在所述终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源之前，所述方法 还包括：
所述终端设备接收所述网络设备发送的第二系统信息，所述第二系统信息用于指示所述至少一个候选随机接入资源与所述至少一个带宽的对应关系；
则对应地，在所述网络设备接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，所述方法还包括：
所述网络设备向所述终端设备发送所述第二系统信息；
所述终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源，包括：
所述终端设备根据所述第二系统信息以及所述所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定所述目标随机接入资源。
具体地，该网络设备可以通过第二系统信息向该终端设备指示该至少一个候选随机接入资源与该至少一个带宽的对应关系，该终端设备接收该第二系统信息，并根据该第二系统信息以及自身能够支持的带宽，确定该目标随机接入资源。
可选地，该至少一个候选随机接入资源与该至少一个带宽的对应关系也可以是协议约定的，本申请实施例对此不作限定。
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，而不应对本申请实施例的实施过程构成任何限定。
上文中结合图1至图3，详细描述了根据本申请实施例的用于随机接入的方法，下面将结合图4至图7，详细描述根据本申请实施例的用于随机接入的装置。
图4示出了本申请实施例提供的用于随机接入的装置400。该装置400包括：
确定单元410，用于根据所述装置能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源；
发送单元420，用于采用所述目标随机接入资源向网络设备发送随机接入信号。
本申请实施例的用于随机接入的装置，通过终端设备根据该终端设备能够支持的带宽，从至少一个候选随机接入资源中选择目标随机接入资源向网 络设备发送随机接入信号，使得该网络设备能够根据目标随机接入资源对应的带宽为该终端设备分配与该终端设备的能力相匹配的工作带宽，该网络设备可以直接采用该终端设备的工作带宽向该终端设备发送随机接入响应，避免了终端设备与网络设备之间在随机接入之后通过额外的信令调整该终端设备的工作带宽，能够节省信令开销，同时在随机接入时对终端设备在不同频域上进行分流，提高用户体验。
可选地，所述至少一个候选随机接入资源中的每个候选随机接入资源的下列至少一种信息互不相同：时域资源、频域资源和前导序列。
可选地，所述确定单元410具体用于：根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽；将所述工作带宽对应的候选随机接入资源确定为所述目标随机接入资源。
可选地，所述确定单元410具体用于：将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的任一带宽确定为所述工作带宽。
可选地，所述确定单元410具体用于：所述终端设备将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的最大带宽确定为所述工作带宽。
可选地，所述装置还包括：第一接收单元，用于在所述根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽之前，接收所述网络设备发送的指示信息，所述指示信息用于指示所述工作带宽的确定方式；所述确定单元410具体用于：根据所述指示信息以及所述终端设备能够支持的带宽，从所述至少一个带宽中确定所述工作带宽。
可选地，所述装置还包括：第二接收单元，用于在所述采用所述目标随机接入资源向网络设备发送随机接入信号之后，接收所述网络设备根据所述随机接入信号在所述工作带宽上发送的随机接入响应。
可选地，所述第二接收单元还用于：接收所述网络设备发送的下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述网络设备配置的频率资源；所述第二接收单元具体用于：根据所述下行控制信息，接收所述随机接入响应。
可选地，所述第二接收单元还用于：在所述接收所述网络设备发送的下行控制信息之前，接收所述网络设备发送的第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源；所述第二接收单元具体用于：在所述第一系统信息指示的频率资源上接收所述下行控制信息。
可选地，所述装置还包括：第三接收单元，用于在所述根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源之前，接收所述网络设备发送的第二系统信息，所述第二系统信息用于指示所述至少一个候选随机接入资源与至少一个带宽的对应关系；所述确定单元410具体用于：根据所述第二系统信息以及所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定所述目标随机接入资源。
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200中的终端设备，装置400可以用于执行上述方法实施例200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5示出了本申请实施例提供的另一用于随机接入的装置500。该装置500包括：
接收单元510，用于接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号，所述至少一个候选随机接入资源与至少一个带宽对应；
确定单元520，用于将与所述目标随机接入资源对应的带宽确定为工作带宽。
本申请实施例的用于随机接入的装置，通过终端设备根据该终端设备能够支持的带宽，从至少一个候选随机接入资源中选择目标随机接入资源向网络设备发送随机接入信号，使得该网络设备能够根据目标随机接入资源对应的带宽为该终端设备分配与该终端设备的能力相匹配的工作带宽，该网络设备可以直接采用该终端设备的工作带宽向该终端设备发送随机接入响应，避免了终端设备与网络设备之间在随机接入之后通过额外的信令调整该终端设备的工作带宽，能够节省信令开销，同时在随机接入时对终端设备在不同频域上进行分流，提高用户体验。
可选地，所述至少一个候选随机接入资源中的每个候选随机接入资源的下列至少一种信息互不相同：时域资源、频域资源和前导序列。
可选地，所述装置还包括：第一发送单元，用于在所述接收终端设备采 用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，向所述终端设备发送指示信息，所述指示信息用于指示所述工作带宽的确定方式。
可选地，所述装置还包括：第二发送单元，用于根据所述随机接入信号，在与所述目标随机接入资源对应的工作带宽上向所述终端设备发送随机接入响应。
可选地，所述第二发送单元还用于：向所述终端设备发送下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述装置配置的频率资源。
可选地，所述第二发送单元还用于：在所述向所述终端设备发送下行控制信息之前，向所述终端设备发送第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源。
可选地，所述装置还包括：第三发送单元，用于在所述接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，向所述终端设备发送第二系统信息，所述第二系统信息用于指示所述至少一个候选随机接入资源与所述至少一个带宽的对应关系。
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300中的网络设备，装置500可以用于执行上述方法实施例300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。
应理解，这里的装置400和装置500可以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。
图6是根据本申请实施例的装置600的示意性框图。如图6所示，该装置600包括处理器610和收发器620。
其中，该处理器610用于根据所述装置能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源；该收发器620用于采用所述目标随机接入资源向网络设备发送随机接入信号。
可选地，所述至少一个候选随机接入资源中的每个候选随机接入资源的 下列至少一种信息互不相同：时域资源、频域资源和前导序列。
可选地，该处理器610具体用于：根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽；将所述工作带宽对应的候选随机接入资源确定为所述目标随机接入资源。
可选地，该处理器610具体用于：将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的任一带宽确定为所述工作带宽。
可选地，该处理器610具体用于：所述终端设备将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的最大带宽确定为所述工作带宽。
可选地，该收发器620还用于：在所述根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽之前，接收所述网络设备发送的指示信息，所述指示信息用于指示所述工作带宽的确定方式；该处理器610具体用于：根据所述指示信息以及所述终端设备能够支持的带宽，从所述至少一个带宽中确定工作带宽。
可选地，该收发器620还用于：在所述采用所述目标随机接入资源向网络设备发送随机接入信号之后，接收所述网络设备根据所述随机接入信号在所述工作带宽上发送的随机接入响应。
可选地，该收发器620还用于：接收所述网络设备发送的下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述网络设备配置的频率资源；根据所述下行控制信息，接收所述随机接入响应。
可选地，该收发器620还用于：在所述接收所述网络设备发送的下行控制信息之前，接收所述网络设备发送的第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源；在所述第一系统信息指示的频率资源上接收所述下行控制信息。
可选地，该收发器620还用于：在所述根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源之前，接收所述网络设备发送的第二系统信息，所述第二系统信息用于指示所述至少一个候选随机接入资源与所述至少一个带宽的对应关系；该处理器610具体用于： 根据所述第二系统信息以及所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定所述目标随机接入资源。
在一个可选例子中，本领域技术人员可以理解，装置600可以具体为上述实施例200中的终端设备，装置600可以用于执行上述方法实施例200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。
可选地，装置600还可以包括存储器，该存储器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610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。
图7是根据本申请实施例的装置700的示意性框图。如图7所示，该装置700包括处理器710和收发器720。
其中，该处理器710用于接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号，所述至少一个候选随机接入资源与至少一个带宽对应；将与所述目标随机接入资源对应的带宽确定为工作带宽。
可选地，所述至少一个候选随机接入资源中的每个候选随机接入资源的下列至少一种信息互不相同：时域资源、频域资源和前导序列。
可选地，该收发器720还用于：在所述接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，向所述终端设备发送指示信息，所述指示信息用于指示所述工作带宽的确定方式。
可选地，该收发器720用于在所述将与所述目标随机接入资源对应的带宽确定为工作带宽之后，根据所述随机接入信号，在与所述目标随机接入资源对应的工作带宽上向所述终端设备发送随机接入响应。
可选地，该收发器720还用于：向所述终端设备发送下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述装置配置的频率资源。
可选地，该收发器720还用于：在所述向所述终端设备发送下行控制信息之前，向所述终端设备发送第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源。
可选地，该收发器720还用于：在所述接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，向所述终端设备发送第二系统信息，所述第二系统信息用于指示所述至少一个候选随机接入资源与所述至少一个带宽的对应关系。
在一个可选例子中，本领域技术人员可以理解，装置700可以具体为上述实施例300中的网络设备，装置700可以用于执行上述方法实施例300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。
可选地，装置700还可以包括存储器，该存储器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710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网络设备对应的各个步骤。
应理解，在本申请实施例中，处理器可以是中央处理单元(Central Processing Unit，CPU)，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。结合本申请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。
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请的各种实施例中，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，而不应对本申请实施例的实施过程构成任何限定。
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描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。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。专业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申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、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，所揭露的系统、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系统，或一些特征可以忽略，或不执行。另一点，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，可以是电性，机械或其它的形式。
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实施例方案的目的。
另外，在本申请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，也可以两个或两个以上单元集成在一个单元中。
所述功能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，本申请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)执行本申请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(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请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申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (34)

  1. 一种用于随机接入的方法，其特征在于，包括：
    终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源；
    所述终端设备采用所述目标随机接入资源向网络设备发送随机接入信号。
  2. 根据权利要求1所述的方法，其特征在于，所述至少一个候选随机接入资源中的每个候选随机接入资源的下列至少一种信息互不相同：
    时域资源、频域资源和前导序列。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源，包括：
    所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽；
    所述终端设备将所述工作带宽对应的候选随机接入资源确定为所述目标随机接入资源。
  4. 根据权利要求3所述的方法，其特征在于，所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽，包括：
    所述终端设备将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的任一带宽确定为所述工作带宽。
  5. 根据权利要求3所述的方法，其特征在于，所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽，包括：
    所述终端设备将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的最大带宽确定为所述工作带宽。
  6. 根据权利要求3至5中任一项所述的方法，其特征在于，在所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽之前，所述方法还包括：
    所述终端设备接收所述网络设备发送的指示信息，所述指示信息用于指 示所述工作带宽的确定方式；
    所述终端设备根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽，包括：
    所述终端设备根据所述指示信息以及所述终端设备能够支持的带宽，从所述至少一个带宽中确定所述工作带宽。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，在所述终端设备采用所述目标随机接入资源向网络设备发送随机接入信号之后，所述方法还包括：
    所述终端设备接收所述网络设备根据所述随机接入信号在所述工作带宽上发送的随机接入响应。
  8. 根据权利要求7所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收所述网络设备发送的下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：
    所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述网络设备配置的频率资源；
    所述终端设备接收所述网络设备根据所述随机接入信号在所述工作带宽上发送的随机接入响应，包括：
    所述终端设备根据所述下行控制信息，接收所述随机接入响应。
  9. 根据权利要求8所述的方法，其特征在于，在所述终端设备接收所述网络设备发送的下行控制信息之前，所述方法还包括：
    所述终端设备接收所述网络设备发送的第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源；
    所述终端设备接收所述网络设备发送的下行控制信息，包括：
    所述终端设备在所述第一系统信息指示的频率资源上接收所述下行控制信息。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，在所述终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源之前，所述方法还包括：
    所述终端设备接收所述网络设备发送的第二系统信息，所述第二系统信 息用于指示所述至少一个候选随机接入资源与至少一个带宽的对应关系；
    所述终端设备根据所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源，包括：
    所述终端设备根据所述第二系统信息以及所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定所述目标随机接入资源。
  11. 一种用于随机接入的方法，其特征在于，包括：
    网络设备接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号，所述至少一个候选随机接入资源与至少一个带宽对应；
    所述网络设备将与所述目标随机接入资源对应的带宽确定为所述终端设备的工作带宽。
  12. 根据权利要求11所述的方法，其特征在于，所述至少一个候选随机接入资源中的每个候选随机接入资源的下列至少一种信息互不相同：
    时域资源、频域资源和前导序列。
  13. 根据权利要求11或12所述的方法，其特征在于，在所述网络设备接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，所述方法还包括：
    所述网络设备向所述终端设备发送指示信息，所述指示信息用于指示所述工作带宽的确定方式。
  14. 根据权利要求11至13中任一项所述的方法，其特征在于，在所述网络设备将与所述目标随机接入资源对应的带宽确定为所述终端设备的工作带宽之后，所述方法还包括：
    所述网络设备根据所述随机接入信号，在所述工作带宽上向所述终端设备发送随机接入响应。
  15. 根据权利要求14所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述终端设备发送下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：
    所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述网络设备配置的频率资源。
  16. 根据权利要求15所述的方法，其特征在于，在所述网络设备向所 述终端设备发送下行控制信息之前，所述方法还包括：
    所述网络设备向所述终端设备发送第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源。
  17. 根据权利要求11至16中任一项所述的方法，其特征在于，在所述网络设备接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，所述方法还包括：
    所述网络设备向所述终端设备发送第二系统信息，所述第二系统信息用于指示所述至少一个候选随机接入资源与所述至少一个带宽的对应关系。
  18. 一种用于随机接入的装置，其特征在于，包括：
    确定单元，用于根据所述装置能够支持的带宽，从至少一个候选随机接入资源中确定目标随机接入资源；
    发送单元，用于采用所述目标随机接入资源向网络设备发送随机接入信号。
  19. 根据权利要求18所述的装置，其特征在于，所述至少一个候选随机接入资源中的每个候选随机接入资源的下列至少一种信息互不相同：
    时域资源、频域资源和前导序列。
  20. 根据权利要求18或19所述的装置，其特征在于，所述确定单元具体用于：
    根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽；
    将所述工作带宽对应的候选随机接入资源确定为所述目标随机接入资源。
  21. 根据权利要求20所述的装置，其特征在于，所述确定单元具体用于：
    将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的任一带宽确定为所述工作带宽。
  22. 根据权利要求20所述的装置，其特征在于，所述确定单元具体用于：
    所述终端设备将所述至少一个带宽中小于或等于所述终端设备能够支持的带宽的最大带宽确定为所述工作带宽。
  23. 根据权利要求20至22中任一项所述的装置，其特征在于，所述装 置还包括：
    第一接收单元，用于在所述根据所述终端设备能够支持的带宽，从与所述至少一个候选随机接入资源对应的至少一个带宽中确定所述终端设备的工作带宽之前，接收所述网络设备发送的指示信息，所述指示信息用于指示所述工作带宽的确定方式；
    所述确定单元具体用于：
    根据所述指示信息以及所述终端设备能够支持的带宽，从所述至少一个带宽中确定所述工作带宽。
  24. 根据权利要求18至23中任一项所述的装置，其特征在于，所述装置还包括：
    第二接收单元，用于在所述采用所述目标随机接入资源向网络设备发送随机接入信号之后，接收所述网络设备根据所述随机接入信号在所述工作带宽上发送的随机接入响应。
  25. 根据权利要求24所述的装置，其特征在于，所述第二接收单元还用于：
    接收所述网络设备发送的下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：
    所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述网络设备配置的频率资源；
    所述第二接收单元具体用于：
    根据所述下行控制信息，接收所述随机接入响应。
  26. 根据权利要求25所述的装置，其特征在于，所述第二接收单元还用于：
    在所述接收所述网络设备发送的下行控制信息之前，接收所述网络设备发送的第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源；
    所述第二接收单元具体用于：
    在所述第一系统信息指示的频率资源上接收所述下行控制信息。
  27. 根据权利要求18至26中任一项所述的装置，其特征在于，所述装置还包括：
    第三接收单元，用于在所述根据所述终端设备能够支持的带宽，从至少 一个候选随机接入资源中确定目标随机接入资源之前，接收所述网络设备发送的第二系统信息，所述第二系统信息用于指示所述至少一个候选随机接入资源与至少一个带宽的对应关系；
    所述确定单元具体用于：
    根据所述第二系统信息以及所述终端设备能够支持的带宽，从至少一个候选随机接入资源中确定所述目标随机接入资源。
  28. 一种用于随机接入的装置，其特征在于，包括：
    接收单元，用于接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号，所述至少一个候选随机接入资源与至少一个带宽对应；
    确定单元，用于将与所述目标随机接入资源对应的带宽确定为所述终端设备的工作带宽。
  29. 根据权利要求28所述的装置，其特征在于，所述至少一个候选随机接入资源中的每个候选随机接入资源的下列至少一种信息互不相同：
    时域资源、频域资源和前导序列。
  30. 根据权利要求28或29所述的装置，其特征在于，所述装置还包括：
    第一发送单元，用于在所述接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，向所述终端设备发送指示信息，所述指示信息用于指示所述工作带宽的确定方式。
  31. 根据权利要求28至30中任一项所述的装置，其特征在于，所述装置还包括：
    第二发送单元，用于在所述将与所述目标随机接入资源对应的带宽确定为所述终端设备的工作带宽之后，根据所述随机接入信号，在所述工作带宽上向所述终端设备发送随机接入响应。
  32. 根据权利要求31所述的装置，其特征在于，所述第二发送单元还用于：
    向所述终端设备发送下行控制信息，所述下行控制信息用于调度所述随机接入响应，所述下行控制信息在下列任意一种频率资源上传输：
    所述工作带宽的全部或部分频率资源、协议约定的频率资源或所述装置配置的频率资源。
  33. 根据权利要求32所述的装置，其特征在于，所述第二发送单元还 用于：
    在所述向所述终端设备发送下行控制信息之前，向所述终端设备发送第一系统信息，所述第一系统信息用于指示传输所述下行控制信息的频率资源。
  34. 根据权利要求28至33中任一项所述的装置，其特征在于，所述装置还包括：
    第三发送单元，用于在所述接收终端设备采用至少一个候选随机接入资源中的目标随机接入资源发送的随机接入信号之前，向所述终端设备发送第二系统信息，所述第二系统信息用于指示所述至少一个候选随机接入资源与所述至少一个带宽的对应关系。
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