WO2018036182A1 - 一种数据通信的方法、装置及系统 - Google Patents

一种数据通信的方法、装置及系统 Download PDF

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Publication number
WO2018036182A1
WO2018036182A1 PCT/CN2017/081549 CN2017081549W WO2018036182A1 WO 2018036182 A1 WO2018036182 A1 WO 2018036182A1 CN 2017081549 W CN2017081549 W CN 2017081549W WO 2018036182 A1 WO2018036182 A1 WO 2018036182A1
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Prior art keywords
access resource
access
resource
downlink
available
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PCT/CN2017/081549
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English (en)
French (fr)
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刘亚林
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present invention relates to the field of mobile communication networks, and in particular, to a method, device and system for data communication.
  • MTC Machine Type Communication
  • numerologies have different frequency domain subcarrier intervals and time domain cyclic prefixes (Cyclic Prefix, CP) and symbol length.
  • CP Cyclic Prefix
  • the reason why different numerologies are defined is that the future 5G needs to adapt to different service types, and different service types have different characteristics. For example, high-speed mobile services are suitable for configuring sub-carrier spacing, and a large number of machine type communication. (massive Machine Type Communication, mMTC) is suitable for small subcarrier spacing.
  • mMTC massive Machine Type Communication
  • the flexible air interface may make the bandwidth of each sub-band (the bandwidth occupied by a numerology) flexible, and dynamically adjust the bandwidth according to service requirements.
  • LTE Long Term Evolvement
  • the random access process includes four steps, as shown in Figure 1, including preamble sequence transmission, random access response, and message 3 transmission (actually the third message, because during the random access process, the contents of these messages are not Fixed, sometimes carrying a radio resource control connection request, sometimes with some control messages or even business data packets, so referred to as message 3), conflict resolution message.
  • message 3 the third message, because during the random access process, the contents of these messages are not Fixed, sometimes carrying a radio resource control connection request, sometimes with some control messages or even business data packets, so referred to as message 3), conflict resolution message.
  • random access of LTE is completed by four messages (except for the dedicated handover procedure).
  • the preamble is transmitted on the specified resource, and the configuration of the random access resource is configured through system messages, for example, in a system information block (system information block, Configured in SIB).
  • system information block system information block, Configured in SIB.
  • the uplink scheduling resource UpLink Grant, UL grant
  • TA Timing Alignment
  • the configuration of random access resources is slightly different in Time Division Duplex (TDD) and Frequency Division Duplex (FDD), but the methods are basically similar. That is, by specifying the location of the time-frequency resource, and broadcasting the location information of the time-frequency resource in the SIB message. Specifically, in the SIB2 configuration, the parch-configIndex is used to configure the time-frequency resource location, and the prach-FreqOffset is used to configure the frequency domain resource location.
  • FDD currently supports only one resource configuration in the frequency domain in LTE.
  • the time domain resource can have multiple configuration options, such as even subframes, odd subframes, and all subframes. TDD can configure multiple resources in the frequency domain.
  • the random access resource is configured through system messages, it is fixed in one configuration once configured. It does not change during the period. If you want to change the resource configuration, you need to go through the system message change process. All terminals need to update their configuration.
  • a disadvantage of the prior art is that once the existing LTE random access resource is configured, it may not change for a relatively long period of time. If there are many UEs accessing during this time, the user may access the collision. Increased, resulting in a lower random access success rate, affecting the user experience. In addition, when there are fewer UEs to access, the random access resources are not used as other transmission resources, which may cause insufficient resource usage.
  • MBB Mobile Broad Bandwidth
  • URLLC Ultra-Reliable Low Latency Communication
  • connection density will be very high, possibly reaching 1,000,000 UEs. /km2 connection density, and most of them may be MTC devices, which generally require higher energy consumption, and the transmission is bursty, which may require a lot of resources in a certain period of time, and then Drastically reduced.
  • the transmission success rate is required to be high, and if the transmission is repeated, the problem of high energy consumption is inevitable. Therefore, the traditional LTE random access procedure and access resources may not meet the requirements of the future 5G system.
  • the present invention provides a method, an apparatus, and a system for random access, which are as follows:
  • the embodiment of the present invention provides a data communication method, including configuring at least one first access resource and at least one second access resource, where the first access resource and the second access The time-frequency resources in which the resources are located do not overlap; the configuration information indicating the at least one first access resource and/or the at least one second access resource is sent to one or more user equipments through a broadcast channel; configuring the at least one At least a part of the first access resource and/or the at least one second access resource is used as an available access resource, and the information used to indicate the available access resource is sent to the one or more by using a downlink message or a downlink signal.
  • User equipment receiving uplink signals from the one or more user equipments through the available access resources.
  • the method further includes configuring at least one third access resource.
  • the configuration information indicating the at least one first access resource and/or the at least one second access resource is broadcasted to the one or more user equipments through the system resource block SIB2;
  • the downlink signal is a cell common reference signal.
  • the patent application uses the cell common reference signal as an example only, and the change of the name of the common reference signal of the cell does not affect the implementation of the patent and possible infringement. If the future 5G adopts a new name, as long as the function corresponding to the signal corresponding to the new name is consistent with the function assumed by the common reference signal of the cell in the prior art, it should fall within the protection scope of the present invention.
  • the information used to indicate the available access resources is sent to the user equipment through the CRS, which can save system signaling overhead and improve resource utilization.
  • the information identifying the available access resources is expressed in binary form, 1 identifies that the access resource is available, and 0 identifies that the access resource is unavailable.
  • the binary information used to identify the available access resources is included in the initialization algorithm of the pseudo-random sequence.
  • the downlink signal is a synchronization signal.
  • the information indicating the available access resources is sent to the user equipment by using the synchronization signal, which can save system signaling overhead and improve resource utilization.
  • the binary information used to identify available access resources is included in the secondary synchronization. In the signal.
  • the downlink message is physical downlink control channel signaling.
  • the application of the physical downlink control channel in this patent application is only an example, and the change of the name of the physical downlink control channel does not affect the implementation of the patent and possible infringement. If the future 5G adopts a new name, as long as the function corresponding to the signal corresponding to the new name is consistent with the function of the physical downlink control channel in the prior art, it should fall within the protection scope of the present invention.
  • the information indicating the available access resources is sent to the user equipment through the physical downlink control channel, which can save system signaling overhead and improve resource utilization.
  • the binary information used to identify available access resources is included in an initialization formula of the scrambling code sequence.
  • the downlink message is a main information block.
  • the present application uses the master information block as an example only, and the change of the name of the master information block does not affect the implementation of the patent and possible infringement. If the future 5G adopts a new name, as long as the function corresponding to the signal corresponding to the new name is consistent with the function assumed by the main information block in the prior art, it should fall within the protection scope of the present invention.
  • the information indicating the available access resources is sent to the user equipment by using the primary information block, which can save system signaling overhead and improve resource utilization.
  • the information length used to indicate available access resources is at least 2 bits.
  • the embodiment of the present invention further provides a data communication method, including receiving a broadcast message from a base station BS, where the broadcast message is used to indicate at least one first access resource and/or at least one second connection The configuration information of the incoming resource; receiving a downlink message or a downlink signal from the base station, where the downlink message or the downlink signal carries information indicating an available access resource; and accessing according to the information of the available access resource The base station.
  • the method further includes acquiring the at least one first access resource according to the configuration information used to indicate the at least one first access resource and/or the at least one second access resource. And/or time-frequency information of at least one second access resource.
  • the time-frequency information of the at least one first access resource and/or the at least one second access resource is obtained by reading the SIB2 message.
  • prach-AdditionalConfigInfo-L1 is used to identify the first access resource
  • prach-AdditionalConfigInfo-L2 is used to identify the second access resource.
  • prach-AdditionalConfigInfo-L1 is only an exemplary name.
  • the name used to identify the first access resource and the second access resource may be different. The name difference does not affect the implementation of this patent and possible infringement.
  • the downlink signal is a cell common reference signal.
  • the information used to indicate the available access resources is sent to the user equipment through the CRS, which can save system signaling overhead and improve resource utilization.
  • the information identifying the available access resources is expressed in binary form, 1 identifies that the access resource is available, and 0 identifies that the access resource is unavailable.
  • the binary information identifying the available access resources is included in the initialization algorithm of the pseudo-random sequence.
  • the downlink signal is a synchronization signal.
  • the information indicating the available access resources is sent to the user equipment by using the synchronization signal, which can save system signaling overhead and improve resource utilization.
  • the binary information used to identify available access resources is included in the secondary synchronization. In the signal.
  • the binary information used to identify available access resources is included in an initialization formula of the scrambling code sequence.
  • the scrambling code sequence of the descrambling code is used to obtain binary information of the access resources available for the identifier.
  • the downlink message is a physical downlink control channel PDCCH signaling.
  • the information indicating the available access resources is sent to the user equipment by using the PDCCH, which can save system signaling overhead and improve resource utilization.
  • the information length used to indicate available access resources is at least 2 bits.
  • the downlink message is a main information block MIB.
  • the information indicating the available access resources is sent to the user equipment by using the MIB, which can save system signaling overhead and improve resource utilization.
  • the embodiment of the present invention further provides an apparatus, including: a processing unit, configured to configure at least one first access resource and at least one second access resource, where the first access resource and the The second access resource does not overlap; at least one of the at least one first access resource and the at least one second access resource is configured as an available access resource; and the sending unit is configured to indicate the at least one The configuration information of an access resource and/or the at least one second access resource is broadcasted to one or more user equipments by using a system message; information for indicating available access resources is sent to the And one or more user equipments; and a receiving unit, configured to receive an uplink signal from the one or more user equipments by using the available access resources.
  • a processing unit configured to configure at least one first access resource and at least one second access resource, where the first access resource and the The second access resource does not overlap
  • at least one of the at least one first access resource and the at least one second access resource is configured as an available access resource
  • the sending unit is configured to indicate the at least one The configuration information of an
  • the downlink signal is a cell common reference signal CRS.
  • the information used to indicate the available access resources is sent to the user equipment through the CRS, which can save system signaling overhead and improve resource utilization.
  • the information identifying the available access resources is expressed in binary form, 1 identifies that the access resource is available, and 0 identifies that the access resource is unavailable.
  • the binary information used to identify the available access resources is included in the initialization algorithm of the pseudo-random sequence.
  • the downlink signal is a synchronization signal.
  • the information indicating the available access resources is sent to the user equipment by using the synchronization signal, which can save system signaling overhead and improve resource utilization.
  • the binary information used to identify available access resources is included in the secondary synchronization signal.
  • the downlink message is a physical downlink control channel PDCCH signaling.
  • the information indicating the available access resources is sent to the user equipment by using the PDCCH, which can save system signaling overhead and improve resource utilization.
  • the binary information used to identify available access resources is included in an initialization formula of the scrambling code sequence.
  • the downlink message is a main information block MIB.
  • the information indicating the available access resources is sent to the user equipment by using the MIB, which can save system signaling overhead and improve resource utilization.
  • the information length used to indicate available access resources is at least 2 bits.
  • the embodiment of the present invention further provides an apparatus, including a receiving unit, configured to receive a broadcast message from a base station BS, where the broadcast message is used to indicate at least one first access resource and/or at least one second Accessing configuration information of the resource; receiving a downlink message or a downlink signal from the base station, the downlink message or the downlink message
  • the number carries information indicating the available access resources
  • the processing unit is configured to access the base station according to the information about the available access resources.
  • the processing unit is further configured to acquire the at least one first interface according to the configuration information used to indicate the at least one first access resource and/or the at least one second access resource. Time-frequency information of the incoming resource and/or at least one second access resource.
  • the time-frequency information of the at least one first access resource and/or the at least one second access resource is obtained by reading the SIB2 message.
  • the prach-AdditionalConfigInfo-L1 is used to identify the first access resource
  • the prach-AdditionalConfigInfo-L2 is used to identify the second access resource.
  • the downlink signal is a cell common reference signal CRS.
  • the information used to indicate the available access resources is sent to the user equipment through the CRS, which can save system signaling overhead and improve resource utilization.
  • the information identifying the available access resources is expressed in binary form, 1 identifies that the access resource is available, and 0 identifies that the access resource is unavailable.
  • the binary information identifying the available access resources is included in the initialization algorithm of the pseudo-random sequence.
  • the downlink signal is a synchronization signal.
  • the information indicating the available access resources is sent to the user equipment by using the synchronization signal, which can save system signaling overhead and improve resource utilization.
  • the binary information used to identify available access resources is included in the secondary synchronization signal.
  • the binary information used to identify available access resources is included in an initialization formula of the scrambling code sequence.
  • the downlink message is a physical downlink control channel PDCCH signaling.
  • the information indicating the available access resources is sent to the user equipment by using the PDCCH, which can save system signaling overhead and improve resource utilization.
  • the scrambling code sequence of the descrambling code is used to obtain binary information of the access resources available for the identifier.
  • the downlink message is a main information block MIB.
  • the information indicating the available access resources is sent to the user equipment by using the MIB, which can save system signaling overhead and improve resource utilization.
  • the technical problem to be solved by the embodiments of the present invention is to improve the resource utilization rate of the base station side on the basis of satisfying the system access success rate.
  • the technical solution provided by the embodiment of the present invention provides a base station BS capable of flexibly configuring random access resources, and improves system resource utilization compared with the prior art.
  • the flexible configuration can be understood as follows: the system efficiency is not affected during the process of configuring the random access resource, and the resource change notification overhead is not increased, and the impact on the user equipment UE is minimized.
  • FIG. 1 is a schematic diagram of a random access procedure of an existing LTE system
  • FIG. 2 is a schematic structural diagram of a network according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for data communication according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an FDD system or a TDD system for a first access resource and a second access resource;
  • FIG. 5 is a schematic diagram of definitions of independent resources and incremental resources according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method for data communication according to another embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a device 700 according to another embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a device 800 according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a device 900 according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a device 1000 according to another embodiment of the present invention.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the user equipment of the present invention can communicate with one or more core networks via a Radio Access Network (RAN), and the user equipment can refer to an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, Remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • RAN Radio Access Network
  • 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”), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, future 5G networks UE in the network, etc.
  • SSIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Processing
  • the network device of the present invention may be a network side device for communicating with the user equipment, for example, may be a base station (Base Transceiver Station, abbreviated as "BTS”) in the GSM system or CDMA, or may be a base station in the WCDMA system (
  • the NodeB (abbreviated as "NB") may also be an evolved base station (Evolutional Node B, "eNB” or “eNodeB”) in the LTE system, or the network device may be a relay station, an access point, an in-vehicle device, A wearable device and a network side device in a future 5G network or a network side device in a future evolved PLMN network.
  • FIG. 2 is a schematic structural diagram of a communication network 200 according to an embodiment of the present invention.
  • the network device 202 manages uplink communication and downlink communication of each UE 204-210 in its coverage area (in FIG. 2, the mobile phone and the notebook computer are used as the UE as an example, and the UE in FIG. 2 may also be the other terminal device. ).
  • Network device 202 may alternatively be referred to as a cellular tower, an eNodeB, an access network, a base station BS, and the like.
  • Network device 202 can simultaneously support transmission of multiple cellular carriers.
  • the BS will be required to provide more access resources.
  • random access may not occur after a system access for a long time. Therefore, configuring too many random access resources will cause system waste.
  • the general terminal will read the system message.
  • the existing system message includes the access resource, but the resource is configured by the system, and if the system message update process is used for accessing Resource notifications are costly and may not be suitable for 5G systems.
  • the technical problem to be solved by the present invention is that the resource utilization rate can be improved on the basis of satisfying the system access success rate.
  • the flexible configuration of access resources means that the configuration process does not affect system efficiency, and the resource change notification overhead should not be increased, and the impact on the terminal should be minimized.
  • the concept of the embodiment of the present invention is based on: classifying a random access resource, and configuring one or more first access resources (also referred to as a first random access resource, which is unified), and the full text is collectively referred to as a first access.
  • the resource and the one or more second access resources (which may also be referred to as the second random access resource, which are unified, the full text is collectively referred to as the second access resource), and the BS is flexibly configured according to the service change or the number of the UE.
  • the first access resource or the second access resource is either a first access resource and a second access resource.
  • system may also configure a third access resource.
  • the configuration process of the first access resource or the second access resource in the following embodiments of the present invention is basically the same as the existing LTE. That is, the time-frequency resource location is configured, and then the location information of the time-frequency resource that identifies the first access resource and the second access resource is sent to one or more UEs through the broadcast message SIB2. Specifically, in the SIB2 configuration, the prach-ConfigIndex field is used to configure the time domain resource location, and the prach-FreqOffset field is used to configure the frequency domain resource location.
  • FDD currently supports only one resource configuration in the frequency domain in LTE.
  • the time domain resource can have multiple configuration options, such as even subframes, odd subframes, and all subframes. TDD can configure multiple resources in the frequency domain.
  • the first embodiment of the present invention provides a data communication method, which is specifically as follows:
  • Step 310 Configure at least one first access resource and at least one second access resource, where the first access resource and the second access resource do not overlap;
  • Step 320 A configuration letter indicating the at least one first access resource and/or the at least one second access resource Broadcast to one or more user devices through system messages;
  • Step 330 Configure at least a part of the at least one first access resource and the at least one second access resource as available access resources, and send information used to indicate available access resources by using a downlink message or a downlink signal. To the one or more user devices;
  • Step 340 Receive an uplink signal from the one or more user equipments by using the available access resources.
  • an access resource may be understood as a time domain resource, a frequency domain resource, or a time-frequency domain resource in the technical field of the present invention.
  • a description of the time domain resource, the frequency domain resource, or the time-frequency domain resource refer to the description of the prior art or the existing standard, and details are not described herein again.
  • the first access resource may be understood as a set of multiple resource blocks, including multiple resource blocks.
  • Each of the resource blocks may be a Resource Element (RE) or an OFDM signal.
  • the second access resource may also be understood as a set of multiple resource blocks, where each resource block may be a Resource Element (RE) or an OFDM signal.
  • FIG. 4 is a schematic diagram of an FDD system or a TDD system for a first access resource and a second access resource, respectively.
  • step 310 the implementation manner of the at least one first access resource and the at least one second access resource is as follows:
  • prach-AdditionalConfigInfo-L1 is used to identify the first access resource
  • prach-AdditionalConfigInfo-L2 is used to identify the second access resource.
  • the prach-AdditionalConfigInfo-L1 and the prach-AdditionalConfigInfo-L2 are merely exemplary. In the implementation process, the naming may be different, but all fall within the protection scope of the embodiments of the present invention.
  • step 320 the configuration information indicating the at least one first access resource and/or the at least one second access resource is broadcasted to the one or more user equipments by using a system message, including:
  • the BS broadcasts to one or more UEs through system messages (for example, SIB messages, MIB messages).
  • system messages for example, SIB messages, MIB messages.
  • the method further includes configuring the third access resource, and notifying the one or more UEs by using the broadcast message.
  • the configuration manner of the third access resource may refer to the configuration manner of the foregoing first access resource or the second access resource, and details are not described herein again.
  • step 330 at least a part of the at least one first access resource and the at least one second access resource are configured as available access resources, and information for indicating available access resources is passed through a downlink message or a downlink signal.
  • the sending to the one or more user equipments includes:
  • the BS can dynamically configure available access resources according to service changes. For example, when the service activity is infrequent, only the first access resource is configured as an available access resource. For example, when the service activity is busy, the first and second access resources are configured as available access resources.
  • the first, second, and third access resources are configured as available access resources, and different bits can be used to identify the first, second, and third access resources, and 3 bits can be used. Bits to identify which access resources are available. For example, the first bit corresponds to the first access resource, the second bit corresponds to the second access resource, and the third bit corresponds to the third access resource. When the bit value is 1, it indicates that the access resource is available. When the bit value is 0, it indicates that the access resource is unavailable. For example, 111 identifies that the first, second, and third access resources of the BS are currently available, and the UE may access the base station by using any one or more of the three access resources; 110 identifies the current first and second connections.
  • the inbound resource is available, and the UE can access the base station by using the first and/or the second access resource.
  • the 100 identifies that the first access resource is available, and the UE can only access the base station by using the first access resource. analogy.
  • the UE receives the identifier 110, it can be known that the base station can be accessed by using the first access resource and the second access resource.
  • the BS is configured with Layer 3 access resources, which are the first access resource, the second access resource, and the third access resource, respectively.
  • three bits are used to identify which access resources are available. For example, when the value is 000, only the first access resource is available. When the value is 001, only the second access resource is available. When the value is 010, only the third access resource is available. When the value is 011, the first and second access resources are identified, and so on.
  • the UE receives the identifier 001, it can be known that the UE can access the base station through the second access resource.
  • binary numbers are used to identify which access resources are available.
  • the base station needs to further inform the UE of the information indicating the available access resources by using a downlink message or a downlink signal.
  • the downlink signal is a Cell-Specific Reference Signal (CRS).
  • CRS Cell-Specific Reference Signal
  • the patent application uses the cell common reference signal as an example only, and the change of the name of the common reference signal of the cell does not affect the implementation of the patent and possible infringement. If the future 5G adopts a new name, as long as the function corresponding to the signal corresponding to the new name is consistent with the function assumed by the common reference signal of the cell in the prior art, it should fall within the protection scope of the patent of the present invention. in.
  • RS Reference Signal
  • n s represents the slot number in the radio frame
  • l is the first OFDM symbol in the current slot
  • c(i) is a pseudo-random sequence
  • the pseudo-random sequence c init is generated by the following formula Initialized:
  • a feasible implementation method is to add an item n ⁇ N random_res at the initialization of the pseudo-random sequence, as shown in the following formula:
  • N random_res is a binary representation of the available access resources
  • n is a positive integer (eg, n is 10), which may be defined by a standard. Therefore, the terminal can acquire the parameter value by detecting the reference signal sequence.
  • n ⁇ N random_res there are two implementation methods.
  • One is to define n as 2 18 , that is, the initialization polynomial is: c init D 18 +D 10 +D+1, Then its initialization field format is:
  • the “3-bit access resource” in Table 2 is used to identify the first access resource and the second access resource. For details, refer to the foregoing two ways of identifying the access resource by using the binary. .
  • 111 indicates that the first access resource is available, the second access resource is available, and the third access resource is available; 101 indicates that the first access resource is available, and the second access resource is unavailable, Three access resources are available.
  • 001 indicates that only the first access resource is available; 010 indicates that only the second access resource is available; 011 indicates that only the third access resource is available; and 100 indicates the first access resource and the second access resource. Available, and so on, no longer repeat them.
  • the “3-bit access resource” in Table 3 is used to identify the first access resource and the second access resource.
  • the two methods for identifying the access resource by using the binary may be referred to.
  • 111 indicates that the first access resource is available, the second access resource is available, and the third access resource is available; 101 indicates that the first access resource is available, and the second access resource is unavailable, Three access resources are available.
  • 001 indicates that only the first access resource is available; 010 indicates that only the second access resource is available; 011 indicates that only the third access resource is available; and 100 indicates the first access resource and the second access resource. Available, and so on, no longer repeat them.
  • the 3 bits are merely illustrative. In an actual implementation process, a person skilled in the art can select an appropriate bit according to the number of available access resources. For example, when the configured access resource has 4 levels, it can be identified by 4 bits. When the configured access resource has only 2 levels, it can be identified by 2 bits.
  • the foregoing embodiment is to notify one or more UEs of the information indicating the available access resources by using the CRS, which can save system signaling and improve resource utilization.
  • the base station may notify the UE of the information indicating the available access resources by using the synchronization signal. specifically:
  • the primary synchronization signal mainly represents the physical ID in the cell ID group, it is mainly considered to carry the parameter in the secondary synchronization signal, and the sequence generation manner is as follows:
  • c 0 (n) and c 1 (n) are two scrambling code sequences that are generated by two different cyclically shifted m-sequences depending on the primary synchronization signal:
  • n ⁇ N rach_res identifying the available access resources is placed therein, and specifically, the scrambling code sequence is modified as follows:
  • n is an integer
  • the n ⁇ N rach_res of the access resource that identifies the available access may be embedded in the scrambling code and sent to the UE side.
  • N rach_res is a binary representation of the available access resources.
  • the UE After receiving the above-mentioned scrambling code, the UE can decode the above-mentioned scrambling code by using the existing decoding technology in the prior art, and obtain a binary number for identifying the available access resource information, and then through the available access resources. Access to the base station.
  • the foregoing embodiment is to notify one or more UEs by using a synchronization signal to indicate available access resources.
  • the base station may use physical downlink control channel (PDCCH) signaling. Notifying one or more UEs of information indicating an available access resource.
  • PDCCH physical downlink control channel
  • the scrambling code of the PDCCH is performed according to the following formula:
  • c(i) is the scrambling code sequence and the scrambling sequence generator is initialized by the following formula:
  • n is an integer
  • N random_res is a binary number that identifies the available access resources.
  • n can take a value of 2 12 .
  • the random access resource indication is indicated by 3 bits.
  • the manner of using 3 bits to identify available access resources is the same as that of using CRS, and will not be described here.
  • the terminal Before the initial access, the terminal may obtain the available access resource information by acquiring the PDCCH, thereby obtaining a random access resource, and implementing a random access procedure.
  • the MIB may also be used to perform an available access resource indication. Assuming 2 bits, 4 possibilities are identified, and 4 different resource levels can be defined at this time.
  • the first access resource is a smaller resource
  • the second access resource is a second access resource configuration, which is more than the first access resource allocation
  • the third access resource is more than the second access resource.
  • each level of resources may be configured independently or incrementally. When the configuration is incremental, the second access resource indicates the first access resource plus the second access resource.
  • the third access resource is based on the second access resource (including the first access resource) plus the third access resource, as shown in FIG. 5.
  • the process of carrying the identifiers of the available access resources in the MIB is similar to that of the SIB2 message. Please refer to the description of how to identify the first access resource and the second access resource in the SIB in the embodiment of the present invention.
  • the MIB indicates a certain level of access resources, it indicates the currently used resource configuration, and the terminal reads the MIB to obtain the configuration of the current random access resource.
  • the present application uses the master information block as an example only, and the change of the name of the master information block does not affect the implementation of the patent and possible infringement. If the future 5G adopts a new name, as long as the function corresponding to the signal corresponding to the new name is consistent with the function assumed by the main information block in the prior art, it should fall within the protection scope of the present invention.
  • the method needs to read the MIB information and occupy the MIB overhead, which is the resource overhead of the display.
  • the purpose of dynamically defining the random access resource can also be achieved.
  • the embodiment of the present invention may also send information for indicating available access resources to one or more users by using other messages or customized new messages, but the signaling overhead is large compared with the above-mentioned system message. , system resource utilization is low.
  • the base station can flexibly configure the random access resource, and can provide system resource utilization compared with the prior art.
  • the embodiment of the present invention further provides a method 600 for data communication, including:
  • Step 610 Receive a broadcast message from a base station BS, where the broadcast message carries configuration information indicating at least one first access resource and/or at least one second access resource.
  • Step 620 Receive a downlink message or a downlink signal from the base station, where the downlink message or the downlink signal carries information indicating an available access resource.
  • Step 630 Access the base station according to the information about the available access resources.
  • the method further includes: acquiring, according to the configuration information used to indicate the at least one first access resource and/or the at least one second access resource, the at least one first access resource and/or Time-frequency information of at least one second access resource.
  • the time-frequency information of the at least one first access resource and/or the at least one second access resource is acquired.
  • prach-AdditionalConfigInfo-L1 is used to identify the first access resource
  • prach-AdditionalConfigInfo-L2 is used to identify the second access resource
  • the downlink signal may be a CRS.
  • the information used to indicate the first access resource and/or the second access resource is located at the end of the CRS message.
  • the information used to indicate the first access resource and/or the second access resource is 2 bits or 3 bits.
  • the downlink signal may be a synchronization signal.
  • the downlink message may be PDCCH signaling.
  • the downlink message may be an MIB.
  • the method 600 is a UE-side method with respect to the method 300, and the descriptions of the CRS, the synchronization signal, the PDCCH signaling, and the MIB in the base station are also applicable to the embodiments of the present invention, and details are not described herein again.
  • an embodiment of the present invention further provides an apparatus 700, including:
  • the processing unit 710 is configured to configure at least one first access resource and at least one second access resource, where the first access resource and the second access resource do not overlap; configuring the at least one first Accessing at least a portion of the resource and the at least one second access resource as available access resources;
  • the sending unit 720 is configured to broadcast, by using a system message, configuration information indicating the at least one first access resource and/or the at least one second access resource to one or more user equipments; Resource letter Transmitting to the one or more user equipments by using a downlink message or a downlink signal;
  • the receiving unit 730 is configured to receive, by using the available access resources, an uplink signal from the one or more user equipments.
  • the downlink signal is a CRS.
  • the downlink signal is a synchronization signal.
  • the downlink message is a physical downlink control channel PDCCH signaling.
  • the downlink message is a main information block MIB.
  • the third embodiment is an embodiment of the device with respect to the first embodiment, and the related description of the first embodiment is also applicable to the third embodiment, and details are not described herein again.
  • an embodiment of the present invention further provides an apparatus 800, including:
  • the receiving unit 810 is configured to receive a broadcast message from the base station BS, where the broadcast message carries configuration information for indicating at least one first access resource and/or at least one second access resource; receiving a downlink from the base station a message or a downlink signal, where the downlink message or the downlink signal carries information indicating an available access resource;
  • the processing unit 820 is configured to access the base station according to the information about the available access resources.
  • the downlink signal is a CRS.
  • the downlink signal is a synchronization signal.
  • the downlink message is a physical downlink control channel PDCCH signaling.
  • the downlink message is a main information block MIB.
  • the fourth embodiment is a device embodiment with respect to the second embodiment, and the related description of the second embodiment is also applicable to the fourth embodiment, and details are not described herein again.
  • Unit may refer to an application-specific integrated circuit (ASIC), electronic circuit, (shared, dedicated or group) processor, and memory that executes one or more software or firmware programs. Combining logic circuits, and/or other suitable components that provide the described functionality.
  • ASIC application-specific integrated circuit
  • FIG. 9 is a schematic block diagram of a network element according to another embodiment of the present invention.
  • the network element 900 includes a processor 910, a memory 920, a transceiver 930, an antenna 940, a bus 950, and a user interface 960.
  • processor 910 controls the operation of network element 900, which may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device.
  • Transceiver 930 includes a transmitter 932 for transmitting signals and a receiver 934 for receiving signals.
  • the number of antennas 940 may be one or more.
  • the network element 900 can also include a user interface 960, such as a keyboard, microphone, speaker, and/or touch screen. User interface 960 can communicate content and control operations to network element 900.
  • bus 950 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • bus system 950 various buses are labeled as bus system 950 in the figure. It should be noted that the foregoing description of the structure of the network element can be applied to the embodiment of the present invention.
  • the memory 920 may include a read only memory (ROM) and a random access memory. (Random Access Memory, RAM), or other types of dynamic storage devices that store information and instructions, or disk storage.
  • ROM read only memory
  • RAM Random Access Memory
  • the memory 920 can be used to store instructions that implement the related methods provided by embodiments of the present invention. It will be appreciated that at least one of the cache and long term storage is programmed or loaded by the processor 910 of the network element 900 by programming or loading.
  • the memory is for storing computer executable program code, wherein when the program code includes an instruction, when the processor executes the instruction, the instruction causes the network Meta performs the following operations:
  • An uplink signal from the one or more user equipments is received by the available access resources.
  • FIG. 10 is a schematic block diagram of a network element according to another embodiment of the present invention.
  • the network element 1000 includes a processor 1010, a memory 1020, a transceiver 1030, an antenna 1040, a bus 1050, and a user interface 1060.
  • the processor 1010 controls the operation of the network element 1000, which may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device.
  • the network element 1000 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device.
  • Transceiver 1030 includes a transmitter 1032 for transmitting signals and a receiver 1034 for receiving signals.
  • the number of antennas 1040 may be one or more.
  • the network element 1000 can also include a user interface 1060, such as a keyboard, microphone, speaker, and/or touch screen. User interface 1060 can communicate content and control operations to network element 1000.
  • bus 1050 which in addition to the data bus includes a power bus, a control bus, and a status signal bus.
  • bus system 1050 various buses are labeled as bus system 1050 in the figure. It should be noted that the foregoing description of the structure of the network element can be applied to the embodiment of the present invention.
  • the memory 1020 may include a Read Only Memory (ROM) and a Random Access Memory (RAM), or other types of dynamic storage devices that may store information and instructions, or may be a disk storage.
  • the memory 1020 can be used to store instructions that implement the related methods provided by embodiments of the present invention. It will be appreciated that at least one of the cache and long term storage is programmed or loaded by the processor 1010 of the network element 1000 by programming or loading.
  • the memory is for storing computer executable program code, wherein when the program code includes an instruction, when the processor executes the instruction, the instruction causes the network Meta performs the following operations:
  • the broadcast message carrying configuration information indicating at least one first access resource and/or at least one second access resource;
  • Accessing the base station according to the information of the available access resources.
  • Embodiments of the present invention also provide a computer storage medium for storing computer software instructions for use by a user equipment, including a program designed to perform the above aspects.
  • the embodiment of the invention further provides a computer storage medium for storing computer software instructions used by the network device, which comprises a program designed to execute the above aspects.
  • the embodiment of the present invention further provides a communication network system, including a user equipment UE and a network device, where the network device is connected to one or more UEs through a wireless network, where the BS is configured to configure at least one first access. a resource and at least one second access resource, wherein the first access resource and the second access resource do not overlap; the at least one first access resource and/or the at least one second access are to be indicated
  • the configuration information of the resource is broadcasted to one or more user equipments by using a system message; configuring at least one of the at least one first access resource and the at least one second access resource as available access resources,
  • the information of the access resource is sent to the one or more user equipments by using a downlink message or a downlink signal; the UE is configured to receive a broadcast message from the base station BS, where the broadcast message is used to indicate at least one first access Configuration information of the resource and/or the at least one second access resource; receiving a downlink message or a downlink signal from the base station
  • the BS can flexibly configure the random access resource, and improves the system resource utilization ratio compared with the prior art.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明实施例提供了一种数据通信的方法、装置及系统。所述方法包括配置至少一个第一接入资源以及至少一个第二接入资源，其中，所述第一接入资源和所述第二接入资源不重叠；将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信息通过系统消息广播至一个或多个用户设备；配置所述至少一个第一接入资源以及至少一个第二接入资源中的至少一部分作为可用的接入资源，将用于指示可用的接入资源的信息通过下行消息或下行信号发送至所述一个或多个用户设备；通过所述可用的接入资源接收来自所述一个或多个用户设备的上行信号。本发明实施例提供的技术方案基站BS能够灵活配置随机接入资源，与现有技术相比，提高了系统资源利用率。

Description

一种数据通信的方法、装置及系统 技术领域
本发明涉及移动通信网络领域，特别涉及一种数据通信的方法、装置及系统。
背景技术
随着移动通信技术的发展，尤其是智能终端的使用，极大地推动了移动网络的发展，使得移动网络宽带化的需求日益增长，而且这种增长还在继续。根据预测，未来会有500亿或更多的的机器类型通信(Machine Type Communication，MTC)设备会连接到网上。目前智能硬件的发展正在兴起，比如智能手环、智能手表、智能电表等正在逐渐被大家接受和使用，可以预期未来这种机器类型通信或机器到机器的通信(Machine to Machine，M2M)将会更加普遍，并对未来的移动网络提出更高的通信要求。
在3GPP RAN1#84次会议上，达成一致意见：在一个频率范围内可以配置多个不同的参数集(numerology)，不同的numerology具有不同的频域子载波间隔、时域循环前缀(Cyclic Prefix，CP)及符号(symbol)长度。之所以定义不同的numerology主要是考虑到未来5G需要适配不同的业务类型，而各种不同的业务类型具有不同的特性，比如高速移动业务则适合配置子载波间隔比较大，而大量机器类型通信(massive Machine Type Communication，mMTC)则适合子载波间隔比较小。
另外，5G考虑灵活空口，灵活空口可能使得每个子带(sub-band，一个numerology所占有的带宽)的带宽灵活可变，可根据业务需要动态调整其带宽大小。以上这些特性就给随机接入技术带来了挑战。
在现有的长期演进(Long Term Evolvement，LTE)系统中，当用户接入系统时，通过随机接入过程进行系统接入。随机接入过程包括4个步骤，如图1所示，包括前导序列传输、随机接入响应、消息3的发送(其实就是第三条消息，因为在随机接入的过程，这些消息的内容不固定，有时候可能携带的是无线资源控制连接请求，有时候可能会带一些控制消息甚至业务数据包，因此简称为消息3)、冲突解决消息。目前LTE的随机接入是通过四条消息来完成的(专用切换过程除外)。就随机接入第一条消息而言，前导序列(preamble)是在指定的资源上进行发送的，随机接入资源的配置是通过系统消息进行配置的，比如在系统信息块(system information block，SIB)中进行配置的。当用户设备(user equipment，UE)有数据到达但是没有上行资源时，则通过随机接入过程获取上行调度资源(UpLink Grant，UL grant)，并同时进行上行时间对齐(Timing Alignment，TA)。
随机接入资源的配置在时分双工(Time Division Duplex，TDD)和频分双工(Frequency Division Duplex，FDD)稍有不同，但其方法基本类似。即通过指定时频资源位置，并将时频资源的位置信息在SIB消息中进行广播。具体地，在SIB2配置中，parch-configIndex用于配置时频资源位置，prach-FreqOffset用于配置频域资源位置。FDD目前在LTE中仅支持频域一个资源配置，时域资源可以有多种配置选项，如偶数子帧、奇数子帧、所有子帧等。而TDD则在频域上可以配置多个资源。
由于随机接入资源是通过系统消息进行配置的，因此，其一经配置，就会固定在一 段时间内不会改变，如果要改变资源配置，需要通过系统消息变更过程来进行，所有终端都需要更新其配置。
现有技术的缺点在于：现有的LTE随机接入资源一经配置，可能会在相对长的时间内不会变化，如果在这段时间内，接入的UE较多，可能导致用户接入碰撞增多，从而导致随机接入成功率降低，影响用户体验。另外，当接入的UE较少时，随机接入资源不会被用作其他传输资源使用，可能又会造成资源使用不足。
针对未来5G系统，能同时支持移动带宽(Mobile Broad Bandwidth,MBB)、MTC、高可靠低时延通信(Ultra-Reliable Low Latency Communication，URLLC)，而且其连接密度会非常的高，可能达到1,000,000UE/km2的连接密度，而其中大部分可能都是MTC设备，该类设备一般对能耗要求较高，传输具有突发性，可能在某个时间段内对资源的要求非常多，而之后则急剧降低。考虑到能耗问题，要求传输成功率较高，如果多次传输势必造成能耗较高的问题。因此，传统的LTE随机接入过程及接入资源可能不能满足未来5G系统的要求。
发明内容
为了解决现有LTE系统随机接入不够灵活的技术问题，本发明实施例提供一种随机接入的方法、装置及系统，所述技术方案如下：
第一方面，本发明实施例提供一种数据通信的方法，包括配置至少一个第一接入资源以及至少一个第二接入资源，其中，所述第一接入资源和所述第二接入资源所在的时频资源不重叠；将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信息通过广播信道发送至一个或多个用户设备；配置所述至少一个第一接入资源和/或至少一个第二接入资源中的至少一部分作为可用的接入资源，将用于指示可用的接入资源的信息通过下行消息或下行信号发送至所述一个或多个用户设备；通过所述可用的接入资源接收来自所述一个或多个用户设备的上行信号。
在一种可能的设计中，所述方法还包括配置至少一个第三接入资源。
在另一种可能的设计中，将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信息通过系统资源块SIB2广播至一个或多个用户设备；
在另一种可能的设计中，所述下行信号为小区公共参考信号。应理解，本专利申请采用小区公共参考信号仅为示例，小区公共参考信号的名称变化并不影响本专利实施及可能的侵权。假如未来5G采用新的名称，只要是该新的名称所对应的信号所承担的功能是与现有技术中小区公共参考信号所承担的功能一致，也应落入本发明专利的保护范围中。通过CRS将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述标识可用的接入资源的信息采用二进制形式表示，1标识接入资源可用，0标识接入资源不可用。
在另一种可能的设计中，将用于标识可用的接入资源的二进制信息包含在伪随机序列的初始化算法中。
在另一种可能的设计中，所述下行信号为同步信号。通过同步信号将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述用于标识可用的接入资源的二进制信息包含在辅同步 信号中。
在另一种可能的设计中，所述下行消息为物理下行控制信道信令。应理解，本专利申请采用物理下行控制信道仅为示例，物理下行控制信道的名称变化并不影响本专利实施及可能的侵权。假如未来5G采用新的名称，只要是该新的名称所对应的信号所承担的功能是与现有技术中物理下行控制信道所承担的功能一致，也应落入本发明专利的保护范围中。通过物理下行控制信道将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述用于标识可用的接入资源的二进制信息包含在扰码序列的初始化公式中。
在另一种可能的设计中，所述下行消息为主信息块。应理解，本专利申请采用主信息块仅为示例，主信息块的名称变化并不影响本专利实施及可能的侵权。假如未来5G采用新的名称，只要是该新的名称所对应的信号所承担的功能是与现有技术中主信息块所承担的功能一致，也应落入本发明专利的保护范围中。通过主信息块将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述用于指示可用的接入资源的信息长度至少为2比特。
第二方面，本发明实施例还提供了一种数据通信的方法，包括接收来自基站BS的广播消息，所述广播消息携带用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息；接收来自所述基站的下行消息或下行信号，所述下行消息或下行信号携带用于指示可用的接入资源的信息；根据所述可用的接入资源的信息，接入所述基站。
在一种可能的设计中，所述方法还包括根据所述用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息，获取所述至少一个第一接入资源和/或至少一个第二接入资源的时频信息。
在另一种可能的设计中，通过读取SIB2消息，获取所述至少一个第一接入资源和/或至少一个第二接入资源的时频信息。
在另一种可能的设计中，prach-AdditionalConfigInfo-L1用于标识第一接入资源、prach-AdditionalConfigInfo-L2用于标识第二接入资源，应理解，prach-AdditionalConfigInfo-L1、prach-AdditionalConfigInfo-L2仅为示例性的命名，具体实现过程中，用于标识第一接入资源、第二接入资源的名称可能会不同，名称不同不影响本专利实施及可能的侵权。
在另一种可能的设计中，所述下行信号为小区公共参考信号。通过CRS将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述标识可用的接入资源的信息采用二进制形式表示，1标识接入资源可用，0标识接入资源不可用。
在另一种可能的设计中，标识可用的接入资源的二进制信息包含在伪随机序列的初始化算法中。
在另一种可能的设计中，所述下行信号为同步信号。通过同步信号将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述用于标识可用的接入资源的二进制信息包含在辅同步 信号中。
在另一种可能的设计中，所述用于标识可用的接入资源的二进制信息包含在扰码序列的初始化公式中。
在另一种可能的设计中，通过解扰码所述扰码序列，获取所述标识可用的接入资源的二进制信息。
在另一种可能的设计中，所述下行消息为物理下行控制信道PDCCH信令。通过PDCCH将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述用于指示可用的接入资源的信息长度至少为2比特。
在另一种可能的设计中，所述下行消息为主信息块MIB。通过MIB将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
第三方面，本发明实施例还提供了一种装置，包括：处理单元，用于配置至少一个第一接入资源以及至少一个第二接入资源，其中，所述第一接入资源和所述第二接入资源不重叠；配置所述至少一个第一接入资源以及至少一个第二接入资源中的至少一部分作为可用的接入资源；发送单元，用于将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信息通过系统消息广播至一个或多个用户设备；将用于指示可用的接入资源的信息通过下行消息或下行信号发送至所述一个或多个用户设备；接收单元，用于通过所述可用的接入资源接收来自所述一个或多个用户设备的上行信号。
在一种可能的设计中，所述下行信号为小区公共参考信号CRS。通过CRS将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述标识可用的接入资源的信息采用二进制形式表示，1标识接入资源可用，0标识接入资源不可用。
在另一种可能的设计中，将用于标识可用的接入资源的二进制信息包含在伪随机序列的初始化算法中。
在另一种可能的设计中，所述下行信号为同步信号。通过同步信号将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述用于标识可用的接入资源的二进制信息包含在辅同步信号中。
在另一种可能的设计中，所述下行消息为物理下行控制信道PDCCH信令。通过PDCCH将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述用于标识可用的接入资源的二进制信息包含在扰码序列的初始化公式中。
在另一种可能的设计中，所述下行消息为主信息块MIB。通过MIB将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述用于指示可用的接入资源的信息长度至少为2比特。
第四方面，本发明实施例还提供一种装置，包括接收单元，用于接收来自基站BS的广播消息，所述广播消息携带用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息；接收来自所述基站的下行消息或下行信号，所述下行消息或下行信 号携带用于指示可用的接入资源的信息；处理单元，用于根据所述可用的接入资源的信息，接入所述基站。
在一种可能的设计中，所述处理单元还用于根据所述用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息，获取所述至少一个第一接入资源和/或至少一个第二接入资源的时频信息。
在另一种可能的设计中，通过读取SIB2消息，获取所述至少一个第一接入资源和/或至少一个第二接入资源的时频信息。
在另一种可能的设计中，prach-AdditionalConfigInfo-L1用于标识第一接入资源、prach-AdditionalConfigInfo-L2用于标识第二接入资源。
在另一种可能的设计中，所述下行信号为小区公共参考信号CRS。通过CRS将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述标识可用的接入资源的信息采用二进制形式表示，1标识接入资源可用，0标识接入资源不可用。
在另一种可能的设计中，标识可用的接入资源的二进制信息包含在伪随机序列的初始化算法中。
在另一种可能的设计中，所述下行信号为同步信号。通过同步信号将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，所述用于标识可用的接入资源的二进制信息包含在辅同步信号中。
在另一种可能的设计中，所述用于标识可用的接入资源的二进制信息包含在扰码序列的初始化公式中。
在另一种可能的设计中，所述下行消息为物理下行控制信道PDCCH信令。通过PDCCH将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
在另一种可能的设计中，通过解扰码所述扰码序列，获取所述标识可用的接入资源的二进制信息。
在另一种可能的设计中，所述下行消息为主信息块MIB。通过MIB将用于指示可用的接入资源的信息发送至用户设备，可以节省系统信令开销，提高资源利用率。
本发明实施例要解决的技术问题为：在满足系统接入成功率的基础上，提高基站侧资源利用率。
本发明实施例所提供的技术方案达到的有益效果：本发明实施例提供的技术方案基站BS能够灵活配置随机接入资源，与现有技术相比，提高了系统资源利用率。灵活配置可以理解为：在配置随机接入资源过程中不影响系统效率，不增加资源变化通知开销，且要尽量减小对用户设备UE的影响。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得 其他的附图。
图1为现有的LTE系统随机接入过程示意图；
图2为本发明实施例提供的一种网络结构示意图；
图3是本发明实施例提供的一种数据通信的方法流程示意图；
图4是FDD系统或TDD系统对第一接入资源和第二接入资源的示意图；
图5是本发明一实施例提供的对独立资源和增量资源的定义示意图；
图6是本发明又一实施例提供的一种数据通信的方法流程示意图；
图7是本发明又一实施例提供的一种装置700的结构示意图；
图8是本发明又一实施例提供的一种装置800的结构示意图；
图9是本发明又一实施例提供的一种装置900的结构示意图；
图10是本发明又一实施例提供的一种装置1000的结构示意图。
具体实施方式
为使得本发明的发明目的、特征、优点能够更加的明显和易懂，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，下面所描述的实施例仅仅是本发明一部分实施例，而非全部实施例。基于本发明中的实施例，本领域的技术人员所获得的所有其他实施例，都属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，这仅仅是描述本发明的实施例中对相同属性的对象在描述时所采用的区分方式。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，以便包含一系列单元的过程、方法、系统、产品或设备不必限于那些单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它单元。
本发明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”)、通用分组无线业务(General Packet Radio Service，简称为“GPRS”)系统、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，以及未来的5G通信系统等。
本发明用户设备可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，用户设备可以指接入终端、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UE等。
本发明网络设备可以是用于与用户设备进行通信的网络侧设备，例如，可以是GSM系统或CDMA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”)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络侧设备或未来演进的PLMN网络中的网络侧设备等。
图2为本发明实施例提供的一种通信网络200的示意性架构图。网络设备202管理其覆盖区域内的各个UE 204～210的上行链路通信和下行链路通信(图2中以手机、笔记本电脑为UE作为示例，图2中的UE还可以是上述其他终端设备)。网络设备202可以替代地被称为蜂窝塔、eNodeB、接入网络、基站BS等。网络设备202可以同时支持多个蜂窝载波的传输。
考虑到5G网络将要支持多种不同的业务类型，且每种业务的的终端数量较多，因此，将要求BS提供更多的接入资源。如前所述，考虑到不同业务的特性，比如mMTC类业务活动不频繁，一次系统接入后可能很长时间不会进行随机接入，因此，配置过多的随机接入资源会造成系统浪费。同时，由于随机接入之前，一般终端会读取系统消息，如前所述，现有的系统消息中包含接入资源，但是这个资源是系统配置的，如果通过系统消息更新过程来进行接入资源通知，则代价较大，可能不适合5G系统。
本发明要解决的技术问题是：在满足系统接入成功率的基础上，又能提高资源利用率。接入资源的灵活配置是指配置过程不影响系统效率，不应增加资源变化通知开销，且要尽量减小对终端的影响。
本发明实施例的构思是基于如下：对随机接入资源进行分级，配置一个或多个第一接入资源(也可以称为第一随机接入资源，为统一，全文统称为第一接入资源)以及一个或多个第二接入资源(也可以称为第二随机接入资源，为统一，全文统称为第二接入资源)，BS根据业务变化或UE的多少，灵活的配置使用第一接入资源或者第二接入资源，又或者是第一接入资源和第二接入资源。
应理解，系统还可以配置第三接入资源。
还应理解，本发明下述实施例对于第一接入资源或第二接入资源的配置过程同现有的LTE基本相同。即配置时频资源位置，然后将标识第一接入资源、第二接入资源的时频资源的位置信息通过广播消息SIB2发送至一个或多个UE。具体地，在SIB2配置中，prach-ConfigIndex字段用于配置时域资源位置，prach-FreqOffset字段用于配置频域资源位置。FDD目前在LTE中仅支持频域一个资源配置，时域资源可以有多种配置选项，如偶数子帧、奇数子帧、所有子帧等。而TDD则在频域上可以配置多个资源。
关于进一步的说明，请详见下述各个实施例。
实施例一
如图3所示，本发明实施例一提供一种数据通信的方法，具体如下：
步骤310、配置至少一个第一接入资源以及至少一个第二接入资源，其中，所述第一接入资源和所述第二接入资源不重叠；
步骤320、将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信 息通过系统消息广播至一个或多个用户设备；
步骤330、配置所述至少一个第一接入资源以及至少一个第二接入资源中的至少一部分作为可用的接入资源，将用于指示可用的接入资源的信息通过下行消息或下行信号发送至所述一个或多个用户设备；
步骤340、通过所述可用的接入资源接收来自所述一个或多个用户设备的上行信号。
具体地，接入资源在本发明技术领域可以理解为时域资源、频域资源、或者时频域资源。对于时域资源、频域资源或者时频域资源的描述可参见现有技术或者现有标准的描述，这里不再赘述。
具体地，第一接入资源可以理解为多个资源块的集合，包含多个资源块。其中每个资源块可以是资源粒子(Resource Element，RE)或者正交频分复用符号(OFDM signal)。类似地，第二接入资源也可以理解为多个资源块的集合，其中每个资源块可以是资源粒子(Resource Element，RE)或者正交频分复用符号(OFDM signal)。如图4所示，图4分别为FDD系统或TDD系统对第一接入资源和第二接入资源的示意图。
在一种具体的实现方式中，步骤310中，所述至少一个第一接入资源以及至少一个第二接入资源的实现方式如下所示：
Figure PCTCN2017081549-appb-000001
其中，本领域技术人员应理解，prach-AdditionalConfigInfo-L1用于标识第一接入资源、prach-AdditionalConfigInfo-L2用于标识第二接入资源。应理解， prach-AdditionalConfigInfo-L1、prach-AdditionalConfigInfo-L2仅为示例性的命名，具体实现过程中，命名可能不同，但都落入本发明实施例的保护范围。
在步骤320中，将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信息通过系统消息广播至一个或多个用户设备，具体包括：
BS配置好第一接入资源、第二接入资源后，通过系统消息(例如SIB消息、MIB消息)广播至一个或多个UE。这样一来，BS覆盖的一个或多个UE获知第一接入资源的时频位置信息、第二接入资源的时频位置信息。
可选地，所述方法还包括配置第三接入资源，并将第三接入资源通过广播消息通知一个或多个UE。
具体地，第三接入资源的配置方式可以参考上述第一接入资源或第二接入资源的配置方式，这里不再赘述。
步骤330中，配置所述至少一个第一接入资源以及至少一个第二接入资源中的至少一部分作为可用的接入资源，将用于指示可用的接入资源的信息通过下行消息或下行信号发送至所述一个或多个用户设备，具体包括：
考虑到不同业务的特性，BS可以根据业务变化，动态配置可用的接入资源。比如，在业务活动不频繁的时候，仅仅配置第一接入资源为可用的接入资源。又比如，在业务活动繁忙的时候，配置第一、第二接入资源为可用的接入资源。
比如，一种情况下，配置第一、第二、第三接入资源为可用的接入资源，可以采用不同的比特位来标识第一、第二、第三接入资源，可以采用3比特位来标识哪些接入资源可用。比如，第一比特对应第一接入资源，第二比特对应第二接入资源，第三比特对应第三接入资源。当比特取值为1时，标识该接入资源可用，当比特取值为0时，标识该接入资源不可用。例如，111标识BS第一、第二以及第三接入资源当前可用，UE可以通过这三个接入资源中的任意一个或多个来接入基站；110标识当前的第一和第二接入资源可用，UE可以通过第一和/或第二接入资源来接入基站；100标识BS仅配置了第一接入资源可用，UE只能通过第一接入资源来接入基站，依次类推。当UE收到上述标识110时，即可获知可以通过第一接入资源和第二接入资源来接入基站。
第二种实现方式中，同样假如BS配置了三层接入资源，分别是第一接入资源、第二接入资源以及第三接入资源，采用3比特位来标识哪些接入资源可用。比如，当取值为000时，标识只有第一接入资源可用；当取值为001时，标识只有第二接入资源可用；当取值为010时，标识只有第三接入资源可用；当取值为011时，标识第一、第二接入资源可用，依次类推。当UE收到上述标识001时，即可获知可以通过第二接入资源接入基站。
无论是采用两种方式中的哪种，都是采用二进制数来标识哪些接入资源可用。
在步骤330中，基站需要进一步将指示可用的接入资源的信息通过下行消息或下行信号通知UE。具体地，有多种实现方式，比如，在一种可能的实现方式中，下行信号为小区公共参考信号(Cell-Specific Reference Signal，CRS)。应理解，本专利申请采用小区公共参考信号仅为示例，小区公共参考信号的名称变化并不影响本专利实施及可能的侵权。假如未来5G采用新的名称，只要是该新的名称所对应的信号所承担的功能是与现有技术中小区公共参考信号所承担的功能一致，也应落入本发明专利的保护范围 中。
一般地，对终端来说，在随机接入前，需要完成一次参考信号(Reference Signal，RS)的读取工作。应理解，在LTE中，小区参考信号序列
Figure PCTCN2017081549-appb-000002
的生成方式如下：
Figure PCTCN2017081549-appb-000003
其中ns表示无线帧中的时隙(slot)号，l是在当前slot里的第几个OFDM符号，c(i)是一个伪随机序列，该伪随机序列cinit的生成是由以下公式进行初始化的：
Figure PCTCN2017081549-appb-000004
其中：
Figure PCTCN2017081549-appb-000005
为了将可用的接入资源通知UE，一个可行的实现方法是在伪随机序列的初始化时增加一项内容n·Nrandom_res，即如下公式所示：
Figure PCTCN2017081549-appb-000006
其中Nrandom_res是可用的接入资源的二进制表示，n是某个正整数(比如n取10)，具体可以由标准定义。因此，终端通过检测参考信号序列可获取该参数值。
本领域技术人员应理解，从LTE的CRS原始生成公式，ns最大取值为19，l最大取值为7，
Figure PCTCN2017081549-appb-000007
最大取值为503，伪随机序列的初始化生成公式实际上可以表示为一个多项式：cinit＝D10+D+1
其中第一项的系数最大值为7·(19+1)+7+1＝148，表示为二进制是：10010100，第二项为503，表示为二进制为：111110111，可见，整个初始化的值具有如表1所示的格式：
表1
14比特0 8比特 9比特 1比特
为了让新增的字段n·Nrandom_res在初始化中能得以体现，有两种实现方法，一是将n定义为218，即初始化多项式为：cinit＝D18+D10+D+1，那么其初始化各字段格式为：
表2
11比特0 3比特接入资源 8比特 9比特小区ID 1比特CP
此时初始化公式为：
Figure PCTCN2017081549-appb-000008
其中，表2中的“3比特接入资源”就用于标识第一接入资源和第二接入资源，具体可以参考上述用二进制来标识接入资源的两种方式，任意一种均可。比如，采用第一种方式时，111表示第一接入资源可用、第二接入资源可用、第三接入资源可用；101表示第一接入资源可用、第二接入资源不可用、第三接入资源可用。采用第二种方式时，001表示仅第一接入资源可用；010表示仅第二接入资源可用；011表示仅第三接入资源可用；100表示第一接入资源和第二接入资源可用，依次类推，不再赘述。
或者将上述初始化多项式变为：cinit＝D13+D4+D3+1，其中假定标识第一接入资源和第二接入资源的比特位放在最后一个字段，为3比特，如表3所示。应理解，本实施例仅给出示例，其他任何类似方法都被视为和本方案相同。
表3
11比特0 8比特 9比特小 区ID 1比特CP 3比特接入资源
其中，表3中的“3比特接入资源”就用于标识第一接入资源和第二接入资源，同理地，具体可以参考上述用二进制来标识接入资源的两种方式，任意一种均可。比如，采用第一种方式时，111表示第一接入资源可用、第二接入资源可用、第三接入资源可用；101表示第一接入资源可用、第二接入资源不可用、第三接入资源可用。采用第二种方式时，001表示仅第一接入资源可用；010表示仅第二接入资源可用；011表示仅第三接入资源可用；100表示第一接入资源和第二接入资源可用，依次类推，不再赘述。
应理解，无论是表2还是表3，差异只是用于标识接入资源的比特位在初始化中的位置不同而已。
还应理解，3比特仅为举例说明，实际实现过程中，本领域技术人员可以根据可用接入资源的数目来选择适合的比特位。比如，当配置的接入资源有4级时，可以采用4个比特位来标识；当配置的接入资源只有2级时，可以采用2个比特位来标识。
上述实施例是通过CRS将指示可用的接入资源的信息通知一个或多个UE，可以节省系统信令，提高资源利用率。在另一种实现方式中，基站可以通过同步信号将指示可用的接入资源的信息通知UE。具体地：
由于主同步信号主要是表示小区ID组中物理ID，因此主要考虑在辅同步信号中携带该参数，序列生成方式如下：
Figure PCTCN2017081549-appb-000009
Figure PCTCN2017081549-appb-000010
其中c0(n)和c1(n)是两个扰码序列，依赖于主同步信号，由两个不同的循环移位的m序列生成：
Figure PCTCN2017081549-appb-000011
Figure PCTCN2017081549-appb-000012
其中0≤n≤30，
Figure PCTCN2017081549-appb-000013
是物理层小区ID组中的物理ID。可以考虑在辅同步信号中，将标识可用的接入资源的n·Nrach_res放入其中，具体地，将扰码序列按以下方式进行改造：
Figure PCTCN2017081549-appb-000014
Figure PCTCN2017081549-appb-000015
其中n为某个整数，通过以上改造可以将标识可用的接入资源的n·Nrach_res嵌入到扰码中，发送至UE侧。其中，Nrach_res为可用的接入资源的二进制表示。当UE侧接收到上述扰码后，通过现有技术已有的解码技术即可以解码上述扰码，获得用于标识可用的接入资源信息的二进制数，进而通过所述可用的接入资源，接入所述基站。
上述实施例是通过同步信号将用于指示可用的接入资源的信息通知一个或多个UE，在另一种实施例中，基站可以通过物理下行控制信道(Physical Downlink Control Channel，PDCCH)信令将用于指示可用的接入资源的信息通知一个或多个UE。应理解，本专利申请采用物理下行控制信道仅为示例，物理下行控制信道的名称变化并不影响本专利实施及可能的侵权。假如未来5G采用新的名称，只要是该新的名称所对应的信号所承担的功能是与现有技术中物理下行控制信道所承担的功能一致，也应落入本发明专利的保护范围中。
由于LTE中系统消息块SIB可以通过PDCCH进行传输，并且在PDCCH的公共搜索区间中进行指示。那么可以在SIB传输时，通过PDCCH信令隐含携带指示可用的接入资源的信息，而不必要求UE进行系统消息的读取。具体地，PDCCH的扰码按照如下公式进行：
Figure PCTCN2017081549-appb-000016
其中c(i)是扰码序列，而扰码序列生成器是由以下公式进行初始化的：
Figure PCTCN2017081549-appb-000017
通过对扰码序列的初始化公式进行改造，可以得到：
Figure PCTCN2017081549-appb-000018
其中n为某个整数，其中Nrandom_res为二进制数，用于标识可用的接入资源。
同CRS的方法类似，
Figure PCTCN2017081549-appb-000019
为3比特，所以，n可以取值为212。同样的，也可以将初始化多项式改为：
Figure PCTCN2017081549-appb-000020
其中假定随机接入资源指示用3比特进行指示。 采用3比特来标识可用的接入资源的方式同采用CRS的一样，这里不再赘述。
终端在初始接入之前，可以通过获取PDCCH来获得可用的接入资源的信息，从而获得随机接入资源，并实现随机接入过程。
另外，在另一种可能的实现方式中，还可以采用MIB来进行可用的接入资源指示。假设采用2比特，标识4种可能，此时可以定义4种不同的资源级别。比如，第一接入资源为较少的资源，第二接入资源是第二种接入资源配置，比第一种接入资源分配的要多，第三接入资源比第二接入资源要更多一些，每种级别的资源可以独立配置，也可以是增量配置的，当是增量配置的时候，第二接入资源表示是第一接入资源加上第二接入资源，第三接入资源是在第二接入资源的基础上(含第一接入资源)加上第三接入资源，如图5所示。
应理解，MIB中携带标识可用的接入资源的过程同SIB2消息基本类似，请参考本发明实施例中对SIB中如何标识第一接入资源、第二接入资源的介绍，这里不再赘述。当MIB指示某个级别的接入资源时，表示当前使用的资源配置，终端通过读取MIB以获得当前随机接入资源的配置。应理解，本专利申请采用主信息块仅为示例，主信息块的名称变化并不影响本专利实施及可能的侵权。假如未来5G采用新的名称，只要是该新的名称所对应的信号所承担的功能是与现有技术中主信息块所承担的功能一致，也应落入本发明专利的保护范围中。
相对前述实施例，这个方法需要读取MIB信息，且占用MIB开销，是显示的资源开销，但作为资源指示的方法，也可以达到动态定义随机接入资源的目的。
应理解，本发明实施例还可以通过其他消息或者自定义的新的消息将用于指示可用接入资源的信息发送至一个或多个用户，只是与上述采用系统消息相比，信令开销大，系统资源利用率较低。
本发明实施例，基站可以灵活配置随机接入资源，与现有技术相比，可以提供系统资源利用率。
实施例二
本发明实施例还提供一种数据通信的方法600，包括：
步骤610，接收来自基站BS的广播消息，所述广播消息携带用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息；
步骤620，接收来自所述基站的下行消息或下行信号，所述下行消息或下行信号携带用于指示可用的接入资源的信息；
步骤630，根据所述可用的接入资源的信息，接入所述基站。
可选地，所述方法还包括：根据所述用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息，获取所述至少一个第一接入资源和/或至少一个第二接入资源的时频信息。
具体地，当UE接收到下行广播消息SIB2(如下所示)，获取所述至少一个第一接入资源和/或至少一个第二接入资源的时频信息。
Figure PCTCN2017081549-appb-000021
Figure PCTCN2017081549-appb-000022
其中，本领域技术人员应理解，prach-AdditionalConfigInfo-L1用于标识第一接入资源、prach-AdditionalConfigInfo-L2用于标识第二接入资源。
可选地，所述下行信号可以是CRS。
可选地，所述用于指示第一接入资源和/或第二接入资源的信息位于所述CRS消息的最后。
可选地，所述用于指示第一接入资源和/或第二接入资源的信息为2比特或3比特。
可选地，所述下行信号可以是同步信号。
可选地，所述下行消息可以是PDCCH信令。
可选地，所述下行消息可以是MIB。
本领域普通技术人员应理解，方法600是相对于方法300的UE侧方法，对于在基站侧CRS、同步信号、PDCCH信令以及MIB的描述，也适用于本发明实施例，不再赘述。
本领域普通技术人员应理解，UE获知了可用的接入资源后，如何接入基站的过程同现有技术中UE随机接入的过程一样，这里不再赘述。
实施例三
如图7所示，本发明实施例还提供一种装置700，包括：
处理单元710，用于配置至少一个第一接入资源以及至少一个第二接入资源，其中，所述第一接入资源和所述第二接入资源不重叠；配置所述至少一个第一接入资源以及至少一个第二接入资源中的至少一部分作为可用的接入资源；
发送单元720，用于将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信息通过系统消息广播至一个或多个用户设备；将用于指示可用的接入资源的信 息通过下行消息或下行信号发送至所述一个或多个用户设备；
接收单元730，用于通过所述可用的接入资源接收来自所述一个或多个用户设备的上行信号。
可选地，所述下行信号为CRS。
可选地，所述下行信号为同步信号。
可选地，所述下行消息为物理下行控制信道PDCCH信令。
可选地，所述下行消息为主信息块MIB。
本领域普通技术人员应理解，实施例三是相对于实施例一的装置实施例，对实施例一的相关描述也适用于实施例三，这里不再赘述。
实施例四
如图8所示，本发明实施例还提供一种装置800，包括：
接收单元810，用于接收来自基站BS的广播消息，所述广播消息携带用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息；接收来自所述基站的下行消息或下行信号，所述下行消息或下行信号携带用于指示可用的接入资源的信息；
处理单元820，用于根据所述可用的接入资源的信息，接入所述基站。
可选地，所述下行信号为CRS。
可选地，所述下行信号为同步信号。
可选地，所述下行消息为物理下行控制信道PDCCH信令。
可选地，所述下行消息为主信息块MIB。
本领域普通技术人员应理解，实施例四是相对于实施例二的装置实施例，对实施例二的相关描述也适用于实施例四，这里不再赘述。
应理解，图7～图8的装置以功能单元的形式展示。在不受限制的情况下，本文所使用的术语“单元”可指执行一个或多个软件或固件程序的专用集成电路(ASIC)、电子电路、(共享、专用或组)处理器以及存储器，组合逻辑电路，和/或提供所述功能的其它合适的部件。
实施例五
图9为本发明又一实施例提供的一种网元的示意性框图。该网元900包括处理器910、存储器920、收发器930、天线940、总线950和用户接口960。
具体地，处理器910控制网元900的操作，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件。
收发器930包括发射机932和接收机934，发射机932用于发射信号，接收机934用于接收信号。其中，天线940的数目可以为一个或多个。网元900还可以包括用户接口960，比如键盘，麦克风，扬声器和/或触摸屏。用户接口960可传递内容和控制操作到网元900。
网元900的各个组件通过总线950耦合在一起，其中总线系统950除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统950。需要说明的是，上述对于网元结构的描述，可应用于本发明的实施例。
存储器920可以包括只读存储器(Read Only Memory，ROM)和随机存取存储器 (Random Access Memory，RAM)，或者可存储信息和指令的其他类型的动态存储设备，也可以是磁盘存储器。存储器920可用于保存实现本发明实施例提供的相关方法的指令。可以理解，通过编程或装载可执行指令到网元900的处理器910，缓存和长期存储中的至少一个。
在一种具体的实施例中，所述存储器，用于存储计算机可执行程序代码，其中，当所述程序代码包括指令，当所述处理器执行所述指令时，所述指令使所述网元执行以下操作：
配置至少一个第一接入资源以及至少一个第二接入资源，其中，所述第一接入资源和所述第二接入资源不重叠；
将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信息通过系统消息广播至一个或多个用户设备；
配置所述至少一个第一接入资源以及至少一个第二接入资源中的至少一部分作为可用的接入资源，将用于指示可用的接入资源的信息通过下行消息或下行信号发送至所述一个或多个用户设备；
通过所述可用的接入资源接收来自所述一个或多个用户设备的上行信号。
以上作为基站BS的网元包含的处理器所执行操作的具体实现方式可以参照实施例一和实施例三中的由BS执行的对应步骤，本发明实施例不再赘述。
实施例六
图10为本发明又一实施例提供的一种网元的示意性框图。该网元1000包括处理器1010、存储器1020、收发器1030、天线1040、总线1050和用户接口1060。
具体地，处理器1010控制网元1000的操作，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件。
收发器1030包括发射机1032和接收机1034，发射机1032用于发射信号，接收机1034用于接收信号。其中，天线1040的数目可以为一个或多个。网元1000还可以包括用户接口1060，比如键盘，麦克风，扬声器和/或触摸屏。用户接口1060可传递内容和控制操作到网元1000。
网元1000的各个组件通过总线1050耦合在一起，其中总线系统1050除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统1050。需要说明的是，上述对于网元结构的描述，可应用于本发明的实施例。
存储器1020可以包括只读存储器(Read Only Memory，ROM)和随机存取存储器(Random Access Memory，RAM)，或者可存储信息和指令的其他类型的动态存储设备，也可以是磁盘存储器。存储器1020可用于保存实现本发明实施例提供的相关方法的指令。可以理解，通过编程或装载可执行指令到网元1000的处理器1010，缓存和长期存储中的至少一个。在一种具体的实施例中，所述存储器，用于存储计算机可执行程序代码，其中，当所述程序代码包括指令，当所述处理器执行所述指令时，所述指令使所述网元执行以下操作：
接收来自基站BS的广播消息，所述广播消息携带用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息；
接收来自所述基站的下行消息或下行信号，所述下行消息或下行信号携带用于指示可用的接入资源的信息；
根据所述可用的接入资源的信息，接入所述基站。
以上作为用户设备UE的网元包含的处理器所执行操作的具体实现方式可以参照实施例二或四中的由UE执行的对应步骤，本发明实施例不再赘述。
本发明实施例还提供了一种计算机存储介质，用于储存为用户设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
本发明实施例还提供了一种计算机存储介质，用于储存为上述网络设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
本发明实施例还提供一种通信网络系统，包括用户设备UE和网络设备，所述网络设备通过无线网络连接一个或多个所述UE，其中，所述BS用于配置至少一个第一接入资源以及至少一个第二接入资源，其中，所述第一接入资源和所述第二接入资源不重叠；将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信息通过系统消息广播至一个或多个用户设备；配置所述至少一个第一接入资源以及至少一个第二接入资源中的至少一部分作为可用的接入资源，将用于指示可用的接入资源的信息通过下行消息或下行信号发送至所述一个或多个用户设备；所述UE用于接收来自基站BS的广播消息，所述广播消息携带用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息；接收来自所述基站的下行消息或下行信号，所述下行消息或下行信号携带用于指示可用的接入资源的信息；根据所述可用的接入资源的信息，接入所述基站。关于UE和网络设备之间的交互过程请参考实施例一至实施例四，这里不再赘述。
本发明实施例提供的技术方案，BS可以灵活配置随机接入资源，与现有技术相比，提高了系统资源利用率。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (23)

  1. 一种数据通信的方法，其特征在于，包括：
    配置至少一个第一接入资源以及至少一个第二接入资源，其中，所述第一接入资源和所述第二接入资源不重叠；
    将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信息通过广播信道发送至一个或多个用户设备；
    配置所述至少一个第一接入资源和/或至少一个第二接入资源中的至少一部分作为可用的接入资源，将用于指示可用的接入资源的信息通过下行消息或下行信号发送至所述一个或多个用户设备；
    通过所述可用的接入资源接收来自所述一个或多个用户设备的上行信号。
  2. 根据权利要求1所述的方法，其特征在于，所述下行信号为小区公共参考信号。
  3. 根据权利要求1所述的方法，其特征在于，所述下行信号为同步信号。
  4. 根据权利要求1所述的方法，其特征在于，所述下行消息为物理下行控制信道信令。
  5. 根据权利要求1所述的方法，其特征在于，所述下行消息为主信息块。
  6. 根据权利要求2所述的方法，其特征在于，所述用于指示可用的接入资源的信息长度至少为2比特。
  7. 一种数据通信的方法，其特征在于，包括：
    接收来自基站BS的广播消息，所述广播消息携带用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息；
    接收来自所述基站的下行消息或下行信号，所述下行消息或下行信号携带用于指示可用的接入资源的信息；
    根据所述可用的接入资源的信息，接入所述基站。
  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：
    根据所述用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息，获取所述至少一个第一接入资源和/或至少一个第二接入资源的时频信息。
  9. 根据权利要求7或8所述的方法，其特征在于，所述下行信号为小区公共参考信号。
  10. 根据权利要求7或8所述的方法，其特征在于，所述下行信号为同步信号。
  11. 根据权利要求7或8所述的方法，其特征在于，所述下行消息为物理下行控制信道信令。
  12. 根据权利要求7或8所述的方法，其特征在于，所述下行消息为主信息块。
  13. 一种装置，其特征在于，包括：
    处理单元，用于配置至少一个第一接入资源以及至少一个第二接入资源，其中，所述第一接入资源和所述第二接入资源不重叠；配置所述至少一个第一接入资源和/或至少一个第二接入资源中的至少一部分作为可用的接入资源；
    发送单元，用于将指示所述至少一个第一接入资源和/或至少一个第二接入资源的配置信息通过广播信道发送至一个或多个用户设备；将用于指示可用的接入资源的信 息通过下行消息或下行信号发送至所述一个或多个用户设备；
    接收单元，用于通过所述可用的接入资源接收来自所述一个或多个用户设备的上行信号。
  14. 根据权利要求13所述的装置，其特征在于，所述下行信号为小区公共参考信号。
  15. 根据权利要求13所述的装置，其特征在于，所述下行信号为同步信号。
  16. 根据权利要求13所述的装置，其特征在于，所述下行消息为物理下行控制信道信令。
  17. 根据权利要求13所述的装置，其特征在于，所述下行消息为主信息块。
  18. 一种装置，其特征在于，包括：
    接收单元，用于接收来自基站BS的广播消息，所述广播消息携带用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息；接收来自所述基站的下行消息或下行信号，所述下行消息或下行信号携带用于指示可用的接入资源的信息；
    处理单元，用于根据所述可用的接入资源的信息，接入所述基站。
  19. 根据权利要求18所述的装置，其特征在于，所述处理单元还用于：
    根据所述用于指示至少一个第一接入资源和/或至少一个第二接入资源的配置信息，获取所述至少一个第一接入资源和/或至少一个第二接入资源的时频信息。
  20. 根据权利要求18或19所述的装置，其特征在于，所述下行信号为小区公共参考信号。
  21. 根据权利要求18或19所述的装置，其特征在于，所述下行信号为同步信号。
  22. 根据权利要求18或19所述的装置，其特征在于，所述下行消息为物理下行控制信道信令。
  23. 根据权利要求18或19所述的装置，其特征在于，所述下行消息为主信息块。
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