WO2017185304A1 - Ra-rnti的确定装置、rar的传输装置、方法以及通信系统 - Google Patents

Ra-rnti的确定装置、rar的传输装置、方法以及通信系统 Download PDF

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Publication number
WO2017185304A1
WO2017185304A1 PCT/CN2016/080517 CN2016080517W WO2017185304A1 WO 2017185304 A1 WO2017185304 A1 WO 2017185304A1 CN 2016080517 W CN2016080517 W CN 2016080517W WO 2017185304 A1 WO2017185304 A1 WO 2017185304A1
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Prior art keywords
rnti
coverage level
random access
belongs
base station
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PCT/CN2016/080517
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English (en)
French (fr)
Inventor
史玉龙
吴联海
贾美艺
Original Assignee
富士通株式会社
史玉龙
吴联海
贾美艺
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Application filed by 富士通株式会社, 史玉龙, 吴联海, 贾美艺 filed Critical 富士通株式会社
Priority to PCT/CN2016/080517 priority Critical patent/WO2017185304A1/zh
Priority to CN201680084401.7A priority patent/CN109076598B/zh
Publication of WO2017185304A1 publication Critical patent/WO2017185304A1/zh
Priority to US16/161,655 priority patent/US10750543B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a device for determining a random access radio network temporary identifier (RA-RNTI), a random access response (RAR) transmission device, a method, and a communication system.
  • RA-RNTI random access radio network temporary identifier
  • RAR random access response
  • NB-IoT Narrow Band Internet of Things
  • the IoT service has many new features, including ultra-low power requirements, deployment of massive user equipment, low data traffic, and low business latency requirements. These features impose many technical requirements on the Long Term Evolution (LTE) system, and important requirements include the ultra-low energy requirements of user equipment.
  • LTE Long Term Evolution
  • NB-IoT technology is a new narrowband communication technology based on the existing LTE technology to further enhance the IoT service requirements.
  • the user equipment UE, User Equipment
  • Preamble the time-frequency resource used by the preamble
  • RAR Random Access Radio Network Tempory Identity
  • the network side obtains the RA-RNTI used by the UE according to the received resource location of the Preamble, and sends a random access response (RAR, Random Access Response) to the UE through the RA-RNTI scrambling.
  • RAR Random Access Response
  • the UE uses the RA-RNTI to descramble the Physical Downlink Control Channel (PDCCH), and further decodes the RAR corresponding to itself.
  • PDCCH Physical Downlink Control Channel
  • RA-RNTI 1+t_id+10*f_id, where t_id indicates the subframe number at which the UE selects to transmit the preamble, and f_id indicates the frequency resource location at which the UE selects to transmit the preamble.
  • the RARs of multiple UEs may be multiplexed into a Protocol Data Unit (PDU) of a Media Access Control (MAC) layer for transmission. Multiple RARs in the same MAC PDU are distinguished by the sequence number of the Preamble.
  • PDU Protocol Data Unit
  • MAC Media Access Control
  • each MAC PDU can accommodate up to 16 RAR data. Therefore, in a case where more than 16 UEs select different frequency resource locations to transmit a preamble in the same random access opportunity, the RAR fed back by the network cannot be multiplexed into the same MAC PDU. These RARs need to be sent by multiple MAC PDUs with the same RA-RNTI scrambling.
  • the UE needs to receive multiple PDUs scrambled by the same RA-RNTI after transmitting the preamble, however, only one of the multiple MAC PDUs may include the RAR of the UE. In this case, the energy of the UE decoding the MAC PDU is wasted.
  • Embodiments of the present invention provide a RA-RNTI determining apparatus, a RAR transmission apparatus, a method, and a communication system.
  • the RARs scrambled by the same RA-RNTI can be multiplexed into the same MAC PDU, thereby reducing the energy consumption of the UE.
  • a transmission apparatus for a random access response is provided, which is configured in a base station, where the apparatus includes:
  • a determining unit configured to determine, according to the detected time-frequency resource location of the preamble sequence, a coverage level to which the user equipment (UE) that sends the preamble sequence belongs;
  • a calculating unit which calculates a random access radio network temporary identifier (RA-RNTI) used by the UE according to the identifier of the coverage level to which the UE belongs;
  • RA-RNTI random access radio network temporary identifier
  • a transmission unit that scrambles and transmits a random access response (RAR) of the UE by using an RA-RNTI of the UE.
  • RAR random access response
  • a transmission apparatus for a random access response is provided, which is configured in a user equipment (UE), where the apparatus includes:
  • a determining unit which determines, according to the measurement result, a coverage level to which the UE belongs
  • a selecting unit which selects a frequency resource from time-frequency resources corresponding to the coverage level to which the UE belongs;
  • a sending unit which uses the frequency resource selected by the selecting unit to send a Preamble when the UE performs a random access procedure
  • a calculating unit which calculates an RA-RNTI used by the UE according to a coverage level to which the UE belongs;
  • a processing unit descrambles the PDCCH in the receiving window of the RAR according to the used RA-RNTI, and obtains the RAR of the UE according to the sending, by the sending unit, the frequency resource of the Preamble.
  • a communication system comprising: a base station and a user equipment, wherein the base station comprises the transmission apparatus of the random access response according to the first aspect,
  • the user equipment comprises the transmission device of the random access response described in the aforementioned second aspect.
  • a device for determining a temporary identifier of a random access wireless network configured in a base station, where the device includes:
  • a first determining unit that determines a random access radio network temporary identifier (RA-RNTI) used by the user equipment according to an identifier of a coverage level to which the user equipment (UE) belongs.
  • RA-RNTI random access radio network temporary identifier
  • a device for determining a temporary identifier of a random access wireless network is provided, which is configured in a user equipment (UE), where the device includes:
  • a first determining unit that determines a random access radio network temporary identifier (RA-RNTI) used by the UE according to an identifier of a coverage level to which the UE belongs.
  • RA-RNTI random access radio network temporary identifier
  • a communication system comprising: a base station and a user equipment, wherein the base station comprises the determining apparatus for the random access wireless network temporary identifier according to the foregoing fourth aspect
  • the user equipment includes the determining apparatus of the random access wireless network temporary identifier according to the foregoing fifth aspect.
  • the beneficial effects of the embodiments of the present invention are: by improving the calculation method of the RA-RNTI, the RARs scrambled by the same RA-RNTI can be multiplexed into the same MAC PDU, which reduces the energy consumption of the UE.
  • Embodiment 1 is a schematic diagram of a method for transmitting a random access response of Embodiment 1;
  • Embodiment 2 is a schematic diagram of a method for transmitting a random access response of Embodiment 2;
  • FIG. 3 is a schematic diagram of interaction between a base station and a UE
  • FIG. 4 is a schematic diagram of a transmission apparatus of a random access response of Embodiment 3;
  • FIG. 5 is a schematic diagram of a transmission apparatus of a random access response of Embodiment 4.
  • Figure 6 is a schematic diagram of a communication system of Embodiment 5.
  • Figure 7 is a schematic diagram of a base station of Embodiment 5.
  • FIG. 8 is a schematic diagram of a user equipment of Embodiment 5.
  • FIG. 9 is a schematic diagram of a method of determining an RA-RNTI of Embodiment 6;
  • FIG. 10 is a schematic diagram of a method of determining an RA-RNTI of Embodiment 7;
  • FIG. 11 is a schematic diagram of an apparatus for determining an RA-RNTI of Embodiment 8.
  • FIG. 12 is a schematic diagram of a determining apparatus of an RA-RNTI of Embodiment 9;
  • Figure 13 is a schematic diagram of a communication system of Embodiment 10.
  • Figure 14 is a schematic diagram of a base station of Embodiment 10.
  • Figure 15 is a schematic diagram of the user equipment of the eleventh embodiment.
  • the processing on the network side refers to the processing of the base station, and the base station may be referred to as an access point, a broadcast transmitter, a Node B, an evolved Node B (eNB), etc., and may include some of them. Or all features.
  • the term "base station” will be used herein. Each base station provides communication coverage for a particular geographic area.
  • a mobile station or device may be referred to as a "user equipment” (UE).
  • UE may be fixed or mobile and may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, and the like.
  • the UE may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, a car, and the like.
  • PDA personal digital assistant
  • the coverage enhancement level identity to which the UE belongs is introduced in the calculation formula of the RA-RNTI, and is defined as CEL_id.
  • UEs at different coverage levels use different RA-RNTIs. Only the RARs sent to the same coverage level UE are multiplexed into the same MAC PDU, thereby reducing the probability that one MAC PDU cannot accommodate all RARs with the same RA-RNTI.
  • the UEs corresponding to these RARs have the same coverage level range, the same number of repeated transmissions can be used, and it is more suitable for multiplexing in the same MAC PDU transmission.
  • the embodiment of the present invention provides a method for transmitting a random access response, which is described from the base station side.
  • the transmission method includes:
  • Step 101 The base station determines, according to the detected time-frequency resource location of the preamble sequence, a coverage level to which the user equipment (UE) that sends the preamble sequence belongs;
  • Step 102 The base station calculates, according to the identifier of the coverage level to which the UE belongs, a random access radio network temporary identifier (RA-RNTI) used by the UE.
  • RA-RNTI random access radio network temporary identifier
  • Step 103 The base station uses the RA-RNTI used by the UE to respond to the random access of the UE. (RAR) is scrambled and transmitted.
  • the user equipment may be, for example, a terminal of the NB-IoT system, but the present invention is not limited thereto.
  • the user equipment may also be a terminal of another network system.
  • the embodiment of the present invention is only described by taking the NB-IoT system as an example, but is not limited thereto, and can be applied to any system that performs RAR transmission.
  • the base station may be a base station of a cell to which the user equipment belongs; the base station may be a macro base station (for example, an eNB), and the user equipment is served by a macro cell (for example, a Macro cell) generated by the macro base station;
  • the base station of the example may also be a micro base station, and the user equipment is served by a micro cell (for example, a Pico cell or a micro cell) generated by the micro base station.
  • the embodiment of the present invention is not limited thereto, and a specific scenario may be determined according to actual needs.
  • the UEs in the cell range of the base station are divided into different coverage levels, and the UE can determine the coverage to which the UE belongs according to its own measurement result. level.
  • the coverage level identifier to which the UE belongs is introduced in the calculation of the RA-RNTI, whereby the RARs of the UEs with the same coverage level can be scrambled using the same RA-RNTI and are multiplexed into the same
  • the transmission in the MAC PDU greatly reduces the probability that the RARs with the same RA-RNTI cannot be multiplexed into the same MAC PUD, reducing the power consumption of the UE.
  • the base station may configure an optional time-frequency resource location for each coverage level in the cell, and broadcast information of the optional time-frequency resource location of each coverage level, thereby, within the cell range.
  • the UE can receive the information and determine its own optional time-frequency resource according to the coverage level to which it belongs.
  • the base station can perform the foregoing configuration in a dynamic, static, or semi-static manner, which is not limited in this embodiment.
  • each MAC PDU is limited to the size of the physical channel transport block of the NB-IoT, and each MAC PDU can accommodate up to 16 RAR data. Therefore, when performing the above configuration, the base station makes each coverage as much as possible.
  • the number of available frequency resources is less than or equal to 16 to ensure that up to 16 RAR data are multiplexed into the same MAC PDU for transmission.
  • the UE selects a frequency resource to send a Preamble in the optional time-frequency resource corresponding to the coverage level to which the UE belongs. Therefore, after receiving the Preamble sent by the UE, the base station can determine the time-frequency resource location of the Preamble, and further determine the coverage level to which the UE belongs, and calculate the RA used by the UE according to the identifier of the coverage level to which the UE belongs. -RNTI. It can be seen that since the identifier of the coverage level to which the UE belongs is introduced in the calculation of the RA-RNTI, The RA-RNTI used by UEs having the same coverage level is the same in each random access opportunity.
  • the base station may calculate the RA-RNTI used by the UE according to the identifier of the coverage level to which the UE belongs and the time domain resource used by the UE when transmitting the Preamble.
  • the time domain resources for example, the system frame number
  • the base station may also calculate the RA-RNTI used by the UE based on the identifier of the coverage level to which the UE belongs and other parameters, or the base station may only The RA-RNTI used by the UE is calculated based on the identifier of the coverage level to which the UE belongs. As long as the identifier of the coverage level to which the UE belongs is introduced in the calculation process of the RA-RNTI, the RARs of the UEs having the same coverage level can be multiplexed and transmitted on the same MAC PDU.
  • the CEL_id is an identifier of the coverage level to which the UE belongs, and may be represented as 0, 1, 2, 3, ... according to different coverage levels, and may also be represented as other values.
  • N is the total number of coverage levels configured by the base station, N ⁇ 1, for example, 4.
  • the SFN is a system frame number, which is a time domain resource used by the UE to send the Preamble.
  • HSFN Hyper Frame Frame Number
  • the base station can utilize the RA-RNTI used by the UEs having the same coverage level to UEs having the same coverage level.
  • the RAR is multiplexed into the same MAC PDU for transmission. For specific multiplexing, refer to the related art, and details are not described herein again.
  • the data of these UEs can use the same number of repeated transmissions, so that the RARs of these UEs are more suitable for taking the same Sending in one MAC PDU further saves the power consumption of the UE.
  • the embodiment of the present invention provides a method for transmitting a random access response, which is described in the embodiment of the present invention from the user equipment side, and the same content as that in Embodiment 1 is not described herein.
  • FIG. 2 is a schematic diagram of a method for transmitting a random access response according to an embodiment of the present invention. As shown in FIG. 2, the transmission method includes:
  • Step 201 The UE determines, according to the measurement result, the coverage level to which the UE belongs.
  • Step 202 The UE selects a frequency resource used for sending the Preamble from the time-frequency resources corresponding to the coverage level to which the UE belongs.
  • Step 203 The UE sends the Preamble when performing random access by using the selected frequency resource.
  • Step 204 The UE calculates the RA-RNTI used by the UE according to the identifier of the coverage level to which the UE belongs.
  • Step 205 The UE descrambles the PDCCH in the RAR receiving window according to the RA-RNTI used by the UE, and obtains its own RAR according to the frequency resource of the Preamble.
  • the identifier of the coverage level to which the UE belongs is introduced in the calculation of the RA-RNTI. Since the RARs of the UEs with the same coverage level are multiplexed into the same MAC PDU for transmission, the UE according to the UE The RA-RNTI used by itself does not need to decode multiple MAC PDUs to obtain its own RAR, which reduces the power consumption of the UE.
  • the measurement result may be a measurement result of the signal strength, or may be a measurement result of the signal quality.
  • the embodiment is not limited thereto, and according to the measurement result, the UE may determine the coverage level to which the UE belongs.
  • the base station configures an optional time-frequency resource of each coverage level in the cell for the UE, and after determining the coverage level to which the UE belongs, the UE may correspond to the coverage level to which the UE belongs.
  • the frequency resource for transmitting the Preamble is selected from the time-frequency resources to transmit the Preamble when the random access is performed by using the selected frequency resource.
  • the UE may calculate the RA-RNTI used by itself according to the identifier of the coverage level to which it belongs (ie, CEL_id) and the time domain resource (for example, system frame number) that sends the Preamble.
  • CEL_id the identifier of the coverage level to which it belongs
  • time domain resource for example, system frame number
  • the RA-RNTI is calculated as:
  • RA-RNTI 1+CEL_id+N*(SFN/4);
  • the CEL_id is the identifier of the coverage level to which the UE belongs, N is the total number of coverage levels, and N ⁇ 1, and the SFN is the system frame number.
  • the above formula for calculating the RA-RNTI is only an example, but the embodiment is not limited thereto. As described above, in other embodiments, the calculation of the RA-RNTI may also consider other parameters as long as the RA can pass. - The calculation of the RNTI is such that the RA-RNTIs used by the UEs belonging to the same coverage level are the same.
  • the UE may descramble the PDCCH with the calculated RA-RNTI in the receiving window of the RAR to obtain the PDSCH where the MAC PDU is located, and decode the MAC PDU according to the frequency resource (ie, f_id) of the Preamble. Get network feedback to your RAR.
  • the transmission method of the random access response in this embodiment is described below in conjunction with the interaction between the base station and the UE.
  • FIG. 3 is a schematic diagram of interaction between a base station and a UE according to the transmission method of this embodiment. As shown in FIG. 3, the transmission method includes:
  • Step 301 The base station configures an optional time-frequency resource location for each coverage level in the cell.
  • Step 302 The base station broadcasts configuration information of an optional time-frequency resource location of each coverage level.
  • Step 303 The UE determines, according to the measurement result, the coverage level to which the UE belongs.
  • Step 304 The UE selects a frequency resource used for sending the Preamble in the time-frequency resource location corresponding to the coverage level to which the UE belongs.
  • Step 305 The UE sends the Preamble when performing random access by using the selected frequency resource.
  • Step 306 the UE calculates its own RA-RNTI
  • the UE may calculate the RA-RNTI according to the identifier of the coverage level to which the UE belongs. For example, the RA-RNTI is calculated according to the identifier of the coverage level to which the UE belongs and the time domain resource (system frame number) of the Preamble. The specific calculation method is as described above.
  • Step 307 The base station determines, according to the detected time-frequency resource location of the Preamble, the RA-RNTI used by the UE.
  • the base station may determine the time-frequency resource location of the Preamble, for example, the time domain resource (system frame number) of the Preamble, the frequency resource, etc., because the base station is configured with different coverage levels.
  • the selected time-frequency resource by detecting the location of the time-frequency resource of the Preamble, the base station may determine the coverage level to which the UE transmitting the Preamble belongs, so that the RA-RNTI used by the UE may be calculated in the same manner as the UE. .
  • Step 308 The base station uses the RA-RNTI to scramble and transmit the RAR of the UE with the same coverage level. lose;
  • the base station can multiplex the RARs of these UEs into the same MAC PDU, and use the same RA used by these UEs.
  • the RNTI scrambles and transmits the MAC PDU.
  • the specific scrambling and transmission methods can refer to the prior art.
  • Step 309 The UE descrambles the PDCCH with its own RA-RNTI in the receiving window of the RAR, and obtains the RAR that the network side feeds back to itself.
  • the UE uses its own RA-RNTI to descramble the PDCCH, obtains the location of the PDSCH where the MAC PDU is located, obtains the MAC PDU from the location, and decodes the RAR from the MAC PDU according to the frequency position of the Preamble.
  • step 306 and step 307 may be performed sequentially or in parallel.
  • certain steps may be added, and certain steps may be reduced or combined.
  • the probability that the RARs with the same RA-RNTI cannot be multiplexed into the same MAC PDU can be greatly reduced, and the number of repeated transmissions with the same coverage level is enabled.
  • the data multiplexing is transmitted in the same MAC PDU, which can effectively save the power consumption of the UE.
  • the embodiment of the invention provides a transmission device for a random access response, which can be configured in a base station.
  • the embodiment of the present invention corresponds to the transmission method of Embodiment 1, and the same content is not described herein again.
  • the transmission apparatus 400 for random access response includes:
  • a determining unit 401 which determines, according to the detected time-frequency resource location of the preamble sequence, a coverage level to which the user equipment (UE) that sends the preamble sequence belongs;
  • the calculating unit 402 is configured to calculate, according to the identifier of the coverage level to which the UE belongs, a random access radio network temporary identifier (RA-RNTI) used by the UE;
  • RA-RNTI random access radio network temporary identifier
  • a transmitting unit 403 that scrambles and transmits a random access response (RAR) of the UE by using an RA-RNTI of the UE.
  • RAR random access response
  • the transmission device 400 of the random access response may further include:
  • a configuration unit 404 configured to configure an optional time-frequency resource location for each coverage level in the cell
  • the broadcast unit 405 broadcasts configuration information of optional time-frequency resource locations of the respective coverage levels.
  • the broadcasting unit 405 and the transmission unit 403 can be combined into one module.
  • the RA-RNTI used by the UEs with different coverage levels is different, and the transmission unit 403 may use the RA-RNTI used by the UEs with the same coverage level to randomly access the UE with the same coverage level.
  • RAR is multiplexed into the same Media Access Layer Protocol Data Unit (MAC PDU) for transmission.
  • the calculating unit 402 may calculate the RA-RNTI used by the UE according to the identifier of the coverage level to which the UE belongs and the time domain resource that the UE sends the Preamble.
  • the embodiment is not limited thereto.
  • the computing unit 402 can calculate the RA-RNTI used by the UE using the following formula:
  • RA-RNTI 1+CEL_id+N ⁇ (SFN/4);
  • the CEL_id is an identifier of the coverage level to which the UE belongs, where N is the total number of coverage levels, and N ⁇ 1, and the SFN is the system frame number of the Preamble sent by the UE.
  • the probability that the RARs with the same RA-RNTI cannot be multiplexed into the same MAC PDU can be greatly reduced, and the number of repeated transmissions with the same coverage level is enabled.
  • the data multiplexing is transmitted in the same MAC PDU, which can effectively save the power consumption of the UE.
  • the embodiment of the invention provides a transmission device for a random access response, which can be configured on a user equipment.
  • the embodiment of the present invention corresponds to the transmission method of Embodiment 2, and the same content is not described again.
  • FIG. 5 is a schematic diagram of a transmission apparatus for a random access response according to an embodiment of the present invention. As shown in FIG. 5, the transmission apparatus 500 for random access response includes:
  • a determining unit 501 which determines, according to the measurement result, an coverage level to which the UE belongs;
  • a selecting unit 502 which selects a frequency resource for transmitting a Preamble from time-frequency resources corresponding to the coverage level to which the UE belongs;
  • a sending unit 503 which uses the selected frequency resource to send a Preamble when performing random access
  • a calculating unit 504 which calculates, according to the identifier of the coverage level to which the UE belongs, the UE uses RA-RNTI;
  • the processing unit 505 descrambles the PDCCH of the UE in a receiving window of the RAR, and obtains the RAR of the UE according to the sending, by the sending unit 503, the frequency resource of the Preamble.
  • the calculating unit 504 may calculate the RA-RNTI used by the UE according to the identifier of the coverage level to which the UE belongs and the time domain resource that the sending unit 503 sends the Preamble.
  • the embodiment is not limited thereto.
  • the computing unit 504 can calculate the RA-RNTI used by the UE using the following formula:
  • RA-RNTI 1+CEL_id+N*(SFN/4);
  • the CEL_id is the identifier of the coverage level to which the UE belongs, N is the total number of coverage levels, and N ⁇ 1, and the SFN is the system frame number (time domain resource) of the Preamble sent by the sending unit 503.
  • the processing unit 505 can obtain the PDSCH where the MAC PDU is located, and obtain the MAC PDU, and decode the MAC PDU by using the frequency resource to obtain the network side feedback to itself. RAR.
  • the probability that the RARs with the same RA-RNTI cannot be multiplexed into the same MAC PDU can be greatly reduced, and the number of repeated transmissions with the same coverage level is enabled.
  • the data multiplexing is transmitted in the same MAC PDU, which can effectively save the power consumption of the UE.
  • the embodiment of the present invention provides a communication system, and the same content as Embodiments 1 to 4 will not be described again.
  • FIG. 6 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • the communication system 600 includes a base station 601 and a user equipment 602.
  • the base station 601 can be configured with the random access response transmission device 400 as described in Embodiment 3; the user equipment 602 can be configured with the random access response transmission device 500 as described in Embodiment 4.
  • the embodiment of the invention further provides a base station.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • base station 700 can include a central processing unit (CPU) 701 and memory 702; and memory 702 is coupled to central processor 701.
  • the memory 702 can store various data; in addition, a program for information processing is stored, and is controlled by the central processing unit 701. The program is executed to receive various information transmitted by the user equipment and to send the request information to the user equipment.
  • CPU central processing unit
  • memory 702 is coupled to central processor 701.
  • the memory 702 can store various data; in addition, a program for information processing is stored, and is controlled by the central processing unit 701.
  • the program is executed to receive various information transmitted by the user equipment and to send the request information to the user equipment.
  • the functionality of the random access response transmission device 400 can be integrated into the central processor 701.
  • the central processing unit 701 can be configured to implement the transmission method of the random access response described in Embodiment 1.
  • the central processing unit 701 can be configured to: control, according to the detected time-frequency resource location of the preamble sequence, a coverage level to which the user equipment (UE) transmitting the preamble sequence belongs; according to the UE The identifier of the associated coverage level calculates a random access radio network temporary identifier (RA-RNTI) used by the UE; the random access response (RAR) of the UE is scrambled by using the RA-RNTI of the UE transmission.
  • RA-RNTI random access radio network temporary identifier
  • the random access response transmission device 400 can be configured separately from the central processing unit 701, for example, the random access response transmission device 400 can be configured as a chip connected to the central processing unit 701 through the central processing unit.
  • the control of 701 implements the functionality of transmission device 400 for random access response.
  • the base station 700 may further include: a transceiver 703, an antenna 704, and the like; wherein the functions of the foregoing components are similar to those of the prior art, and details are not described herein again. It should be noted that the base station 700 also does not have to include all the components shown in FIG. 7; in addition, the base station 700 may further include components not shown in FIG. 7, and reference may be made to the prior art.
  • This embodiment also provides a user equipment.
  • FIG. 8 is a schematic block diagram showing the system configuration of the user equipment 800 according to an embodiment of the present invention.
  • the user device 800 can include a central processor 801 and a memory 802; the memory 802 is coupled to the central processor 801.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • central processor 801 also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls various aspects of user device 800. The operation of the part.
  • the central processing unit 801 can be configured to implement the transmission method of the random access response described in Embodiment 2.
  • the central processing unit 801 may be configured to perform control of: determining, according to the measurement result, a coverage level to which the UE belongs; selecting a frequency resource from time-frequency resources corresponding to the coverage level to which the UE belongs; using the selected frequency resource Transmitting a Preamble when the random access is performed; calculating an RA-RNTI used by the UE according to the identifier of the coverage level to which the UE belongs; and decoding in the receiving window of the RAR according to the RA-RNTI used by the UE
  • the PDCCH of the UE is scrambled, and the RAR of the UE is obtained according to the frequency resource that sends the Preamble.
  • the user equipment 800 may further include: a communication module 803, an input unit 804, an audio processor 805, a display 806, and a power source 807. It should be noted that the user equipment 800 does not necessarily have to include all the components shown in FIG. 8; in addition, the user equipment 800 may also include components not shown in FIG. 8, and reference may be made to the prior art.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes the base station to perform a transmission method of the random access response as described in Embodiment 1 when the program is executed in a base station.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a base station to perform a transmission method of the random access response as described in Embodiment 1.
  • the embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a user equipment, the program causes the user equipment to perform a transmission method of the random access response as described in Embodiment 2.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the user equipment to perform the transmission method of the random access response as described in Embodiment 2.
  • the embodiment of the invention provides a method for determining a temporary identifier of a random access wireless network, which is described from the base station side. The same contents as those in Embodiment 1 will not be repeatedly described.
  • the method includes:
  • Step 901 The base station determines a random access radio network temporary identifier (RA-RNTI) used by the user equipment according to the identifier of the coverage level to which the user equipment (UE) belongs.
  • RA-RNTI random access radio network temporary identifier
  • the definitions of the base station, the UE, and the coverage level are the same as those in Embodiment 1, and are not described herein again.
  • the base station may also configure an optional time-frequency resource location for each coverage level in the cell, so as to determine the coverage level to which the UE belongs according to the received Preamble sent by the UE.
  • the specific configuration is the same as that in Embodiment 1, and details are not described herein again.
  • the base station may calculate the RA-RNTI used by the UE according to the identifier of the coverage level to which the UE belongs and the time domain resource that the UE sends the Preamble, for example, using the calculation formula of the foregoing Embodiment 1 to calculate the RA- RNTI.
  • the embodiment is not limited thereto.
  • the base station can multiplex the RARs of the UEs with the same coverage level into the same Transfer in a MAC PDU.
  • the identifier of the coverage level to which the UE belongs is introduced in the calculation of the RA-RNTI, which can greatly reduce the probability that the RARs with the same RA-RNTI cannot be multiplexed into the same MAC PDU, and have the same coverage.
  • the data multiplexing of the number of repeated transmissions is transmitted in the same MAC PDU, which can effectively save the power consumption of the UE.
  • the embodiment of the invention provides a method for determining a temporary identifier of a random access wireless network, which is described from the user equipment side in the embodiment of the present invention.
  • the same contents as those of Embodiment 1 or Embodiment 2 will not be repeatedly described.
  • Figure 10 is a flow chart of the method. Referring to Figure 10, the method includes:
  • Step 1001 The user equipment (UE) determines the random access radio network temporary identifier (RA-RNTI) used by the user equipment (UE) according to the identifier of the coverage level to which it belongs.
  • RA-RNTI random access radio network temporary identifier
  • the definitions of the base station, the UE, and the coverage level are the same as those in Embodiment 1, and are not described herein again.
  • the UE may further receive configuration information broadcast by the base station to determine an optional time-frequency resource corresponding to each coverage level.
  • the UE may determine the coverage level to which the UE belongs according to its own measurement result, and select one frequency resource in the time-frequency resource corresponding to the coverage level to send the Preamble.
  • the UE may calculate the RA-RNTI used by the UE according to the identifier of the coverage level and the time domain resource of the Preamble, for example, using the calculation formula of the foregoing Embodiment 2 to calculate the RA-RNTI.
  • the embodiment is not limited thereto.
  • the UE may use the RA-RNTI to descramble the PDCCH in the receiving window of the RAR, thereby obtaining the location of the PDSCH where the MAC PDU is located, and obtaining the MAC PDU.
  • the RAR of the Preamble can be decoded to obtain its own RAR.
  • the identifier of the coverage level to which the UE belongs is introduced in the calculation of the RA-RNTI, which can greatly reduce the probability that the RARs with the same RA-RNTI cannot be multiplexed into the same MAC PDU, and have the same coverage.
  • the data multiplexing of the number of repeated transmissions is transmitted in the same MAC PDU, which can effectively save the power consumption of the UE.
  • the embodiment of the invention provides a device for determining a temporary identifier of a random access wireless network, and the device can be configured At the base station.
  • the same contents as those in Embodiments 1 and 6 will not be repeatedly described.
  • the apparatus 1100 includes: a first determining unit 1101, which determines a random access wireless network used by the user equipment according to an identifier of a coverage level to which a user equipment (UE) belongs. Temporary identification (RA-RNTI).
  • a first determining unit 1101 which determines a random access wireless network used by the user equipment according to an identifier of a coverage level to which a user equipment (UE) belongs.
  • Temporary identification (RA-RNTI) Temporary identification
  • the definitions of the base station, the UE, and the coverage level are the same as those in Embodiment 1, and are not described herein again.
  • the apparatus 1100 may further include: a configuration unit 1102 configured to configure an optional time-frequency resource location for each coverage level in the cell.
  • a configuration unit 1102 configured to configure an optional time-frequency resource location for each coverage level in the cell.
  • the apparatus 1100 may further include: a receiving unit 1103, which receives a Preamble sent by the UE; and a second determining unit 1103, which determines, according to the received Preamble sent by the UE, the UE belongs to Coverage level. Further, the second determining unit 1103 may further determine a time-frequency resource of the Preamble according to the received Preamble sent by the UE.
  • the first determining unit 1101 may calculate the RA-RNTI used by the UE according to the identifier of the coverage level to which the UE belongs and the time domain resource that the UE sends the Preamble, for example, using the calculation formula of the foregoing Embodiment 1 Calculate the RA-RNTI.
  • the embodiment is not limited thereto.
  • the base station can multiplex the RARs of the UEs with the same coverage level into the same Transfer in a MAC PDU.
  • the identifier of the coverage level to which the UE belongs is introduced in the calculation of the RA-RNTI, which can greatly reduce the probability that the RARs with the same RA-RNTI cannot be multiplexed into the same MAC PDU, and have the same coverage.
  • the data multiplexing of the number of repeated transmissions is transmitted in the same MAC PDU, which can effectively save the power consumption of the UE.
  • the embodiment of the invention provides a device for determining a temporary identifier of a random access wireless network, and the device is configured on a user equipment.
  • the same contents as those of Embodiment 1 or Embodiment 2 or Embodiment 7 will not be repeatedly described.
  • Figure 12 is a schematic view of the device.
  • the device 1200 includes:
  • the first determining unit 1201 determines a random access radio network temporary identifier (RA-RNTI) used by the UE according to the identifier of the coverage level to which the UE belongs.
  • RA-RNTI random access radio network temporary identifier
  • the definitions of the base station, the UE, and the coverage level are the same as those in Embodiment 1, and are not described herein again.
  • the apparatus 1200 may further include:
  • the receiving unit 1202 receives configuration information broadcast by the base station
  • the second determining unit 1203 determines, according to the configuration information, an optional time-frequency resource corresponding to each coverage level.
  • the apparatus 1200 may further include:
  • the third determining unit 1204 determines the coverage level to which the UE belongs according to the measurement result of the UE.
  • the UE may select one frequency resource for transmitting the Preamble in the time-frequency resources corresponding to the coverage level.
  • the first determining unit 1201 may calculate the RA-RNTI used by the UE according to the identifier of the coverage level to which the UE belongs and the time domain resource that the UE sends the Preamble, for example, using the foregoing Embodiment 2 Calculate the formula to calculate the RA-RNTI.
  • the embodiment is not limited thereto.
  • the UE may use the RA-RNTI to descramble the PDCCH in the receiving window of the RAR, thereby obtaining the location of the PDSCH where the MAC PDU is located, and obtaining the MAC PDU.
  • the RAR of the Preamble can be decoded to obtain its own RAR.
  • the identifier of the coverage level to which the UE belongs is introduced in the calculation of the RA-RNTI, which can greatly reduce the probability that the RARs with the same RA-RNTI cannot be multiplexed into the same MAC PDU, and have the same coverage.
  • the data multiplexing of the number of repeated transmissions is transmitted in the same MAC PDU, which can effectively save the power consumption of the UE.
  • the embodiment of the present invention provides a communication system, and the same content as Embodiments 6 to 9 will not be described again.
  • FIG. 13 is a schematic diagram showing the structure of a communication system according to an embodiment of the present invention.
  • the communication system 1300 includes a base station 1301 and a user equipment 1302.
  • the base station 1301 may be configured with the determining apparatus 1000 of the RA-RNTI as described in Embodiment 7, and the user equipment 1302 may be configured with the determining apparatus 1200 of the RA-RNTI as described in Embodiment 9.
  • the embodiment of the invention further provides a base station.
  • FIG. 14 is a schematic diagram showing the structure of a base station according to an embodiment of the present invention.
  • base station 1400 can include a central processing unit (CPU) 1401 and memory 1402; and memory 1402 is coupled to central processing unit 1401. Its
  • the memory 1402 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 1401 to receive various information transmitted by the user equipment and to transmit the request information to the user equipment.
  • CPU central processing unit
  • memory 1402 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 1401 to receive various information transmitted by the user equipment and to transmit the request information to the user equipment.
  • the functionality of the determining device 1000 of the RA-RNTI may be integrated into the central processor 1401.
  • the central processing unit 1401 may be configured to implement the determining method of the RA-RNTI described in Embodiment 6.
  • the central processing unit 1401 can be configured to perform control to determine a random access wireless network temporary identity (RA-RNTI) used by the user equipment according to an identification of a coverage level to which the user equipment (UE) belongs.
  • RA-RNTI random access wireless network temporary identity
  • the determining apparatus 1000 of the RA-RNTI may be configured separately from the central processing unit 1401.
  • the determining apparatus 1000 of the RA-RNTI may be configured as a chip connected to the central processing unit 1401 through the central processing unit 1401. Control is performed to implement the function of the determining device 1000 of the RA-RNTI.
  • the base station 1400 may further include: a transceiver 1403, an antenna 1404, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the base station 1400 does not have to include all of the components shown in FIG. 14; in addition, the base station 1400 may also include components not shown in FIG. 14, and reference may be made to the prior art.
  • This embodiment also provides a user equipment.
  • FIG. 15 is a schematic block diagram showing the system configuration of the user equipment 1500 according to the embodiment of the present invention.
  • the user device 1500 can include a central processor 1501 and a memory 1502; the memory 1502 is coupled to the central processor 1501.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • central processor 1501 also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls each of user devices 1500. The operation of the part.
  • the central processing unit 1501 may be configured to implement the determining method of the RA-RNTI described in Embodiment 8.
  • the central processor 1501 may be configured to perform control to determine a random access wireless network temporary identity (RA-RNTI) used by the user equipment according to an identity of a coverage level to which the user equipment (UE) belongs.
  • RA-RNTI random access wireless network temporary identity
  • the user equipment 1500 may further include: a communication module 1503, an input unit 1504, an audio processor 1505, a display 1506, and a power source 1507. It is worth noting that the user equipment 1500 is not It is necessary to include all of the components shown in Fig. 15; in addition, the user equipment 1500 may also include components not shown in Fig. 15, and reference may be made to the prior art.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • the apparatus and/or method described in connection with the embodiments of the invention may be embodied directly in hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional blocks shown in FIG. 4 or FIG. 5 or FIG. 10 or FIG. 12 and/or one or more combinations of functional blocks may correspond to various software modules of a computer program flow, It can correspond to each hardware module.
  • These software modules may correspond to the respective steps shown in FIG. 1, respectively.
  • These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • the software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • Supplementary note 1 a method for determining a temporary identifier of a random access wireless network, wherein the method includes:
  • the base station determines a random access radio network temporary identifier (RA-RNTI) used by the user equipment according to the identifier of the coverage level to which the user equipment (UE) belongs.
  • RA-RNTI random access radio network temporary identifier
  • the base station configures an optional time-frequency resource location for each coverage level in the cell
  • the base station broadcasts configuration information of an optional time-frequency resource location of each coverage level.
  • the base station determines, according to the received Preamble sent by the UE, the coverage level to which the UE belongs.
  • the base station calculates the RA-RNTI used by the UE according to the identifier of the coverage level to which the UE belongs and the time domain resource that the UE sends the Preamble.
  • RA-RNTI 1+CEL_id+N*(SFN/4);
  • the CEL_id is an identifier of the coverage level to which the UE belongs, where N is the total number of coverage levels, and N ⁇ 1, and the SFN is the system frame number of the Preamble sent by the UE.
  • Supplementary note 6 a method for determining a temporary identifier of a random access wireless network, wherein the method includes:
  • the user equipment determines the random access radio network temporary identifier (RA-RNTI) used by itself according to the identity of the coverage level to which it belongs.
  • RA-RNTI random access radio network temporary identifier
  • the UE receives configuration information broadcast by the base station
  • the UE determines an optional time-frequency resource corresponding to each coverage level according to the configuration information.
  • the UE determines the coverage level to which the UE belongs according to its own measurement result.
  • the UE calculates the RA-RNTI used by the UE according to the identifier of the coverage level to which the UE belongs and the time domain resource that the UE sends the Preamble.
  • RA-RNTI 1+CEL_id+N*(SFN/4);
  • the CEL_id is an identifier of the coverage level to which the UE belongs, where N is the total number of coverage levels, and N ⁇ 1, and the SFN is the system frame number of the Preamble sent by the UE.

Abstract

一种随机接入响应的传输装置、方法以及通信系统。所述随机接入响应的传输方法包括：基站根据检测到的前导序列(Preamble)的时频资源位置确定发送所述前导序列的用户设备(UE)所属的覆盖级；所述基站根据所述UE所属的覆盖级的标识计算所述UE所使用的随机接入无线网络临时标识(RA-RNTI)；所述基站利用所述UE的RA-RNTI对所述UE的随机接入响应(RAR)进行加扰并传输。由此，在RA-RNTI中引入UE的覆盖级标识后，可以大大降低具有相同RA-RNTI的RAR无法复用到同一个MAC PDU中的概率，并且使具有相同覆盖级重复发送次数的数据复用在同一个MAC PDU中发送，可以有效的节省UE的功耗。

Description

RA-RNTI的确定装置、RAR的传输装置、方法以及通信系统 技术领域
本发明涉及通信技术领域，特别涉及一种随机接入无线网络临时标识(RA-RNTI)的确定装置、随机接入响应(RAR)的传输装置、方法以及通信系统。
背景技术
随着物联网(IoT，Internet of Things)在下一代移动通信网络中应用需求越来越广泛，第3代合作伙伴计划(3GPP，3rd Generation Partnership Project)正在研究一种新的无线通信技术用来支持IoT业务，也就是关于窄带物联网(NB-IoT，Narrow Band Internet of Things)技术的议题。
IoT业务具有很多新的特征，包括超低能耗要求、部署海量用户设备、数据流量较少、业务时延要求不高等。这些特征对长期演进(LTE，Long Term Evolution)系统提出了很多技术要求，其中重要的要求包括用户设备的超低能耗要求。
NB-IoT技术是以现有的LTE技术为基础，为满足IoT业务要求进一步增强的一种新的窄带通信技术。在NB-IoT的随机接入过程中，用户设备(UE，User Equipment)根据网络的配置情况选择发送前导序列(Preamble)所使用的时频资源，并根据选择的资源情况计算随机接入无线网络临时标识(RA-RNTI，Random Access Radio Network Tempory Identity)。网络侧根据接收到的UE发送Preamble的资源位置，获得UE所使用的RA-RNTI，并将随机接入响应(RAR，Random Access Response)通过该RA-RNTI加扰发送给UE。UE使用RA-RNTI解扰物理下行控制信道(PDCCH，Physical Downlink Control Channel)，进而解码对应于自己的RAR。
在LTE系统中，RA-RNTI＝1+t_id+10*f_id，其中t_id表示UE选择发送preamble的子帧号，f_id表示UE选择发送preamble的频率资源位置。多个UE的RAR可以复用到一个媒体接入控制(MAC，Media Access Control)层的协议数据单元(PDU，Protocol Data Unit)中发送。同一个MAC PDU中的多个RAR用Preamble的序列号来区分。
在NB-IoT系统中，所有UE使用的Preamble的序列号都相同，且发送preamble的随机接入机会最多每40ms出现一次。因此，RA-RNTI的计算中不再体现t_id，而 是使用系统帧号(SFN，System Frame Number)表示UE发送Preamble的时域位置。同时使用f_id区分复用在同一个MAC PDU的不同RAR。因此，RA-RNTI＝1+(SFN/4)。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
但是，发明人发现：在NB-IoT系统中，最多可以为每次随机接入的机会配置48个频率资源，即48个不同的f_id。然而，受限于NB-IoT的物理信道传输块的大小，每个MAC PDU最多容纳16个RAR数据。因此，在同一个随机接入机会中，有超过16个UE选择不同的频率资源位置发送preamble的情况下，网络反馈的RAR不能复用到同一个MAC PDU中。这些RAR需要由多个具有相同RA-RNTI加扰的MAC PDU发送。UE在发送preamble后需要接收多个由相同RA-RNTI加扰的PDU，然而多个MAC PDU中仅有一个PDU中可能包含该UE的RAR。这种情况下，就会浪费UE解码MAC PDU的能量。
本发明实施例提供一种RA-RNTI的确定装置、RAR的传输装置、方法以及通信系统。通过对RA-RNTI的计算方法进行改进，使得由相同RA-RNTI加扰的RAR可以复用到同一个MAC PDU中，进而降低UE的能耗。
根据本发明实施例的第一方面，提供了一种随机接入响应的传输装置，配置于基站，其中，该装置包括：
确定单元，其根据检测到的前导序列(Preamble)的时频资源位置确定发送所述前导序列的用户设备(UE)所属的覆盖级；
计算单元，其根据所述UE所属的覆盖级的标识计算所述UE所使用的随机接入无线网络临时标识(RA-RNTI)；
传输单元，其利用所述UE的RA-RNTI对所述UE的随机接入响应(RAR)进行加扰并传输。
根据本发明实施例的第二方面，提供了一种随机接入响应的传输装置，配置于用户设备(UE)，其中，该装置包括：
确定单元，其根据测量结果确定所述UE所属的覆盖级；
选择单元，其从所述UE所属的覆盖级对应的时频资源中选择频率资源；
发送单元，其利用所述选择单元选择的频率资源在所述UE进行随机接入过程时发送Preamble；
计算单元，其根据所述UE所属的覆盖级计算所述UE所使用的RA-RNTI；
处理单元，其根据所述UE根据所使用的RA-RNTI在RAR的接收窗内解扰PDCCH，根据所述发送单元发送所述Preamble的频率资源得到所述UE的RAR。
根据本发明实施例的第三方面，提供了一种通信系统，所述通信系统包括基站和用户设备，其中，所述基站包括前述第一方面所述的随机接入响应的传输装置，所述用户设备包括前述第二方面所述的随机接入响应的传输装置。
根据本发明实施例的第四方面，提供了一种随机接入无线网络临时标识的确定装置，配置于基站，其中，该装置包括：
第一确定单元，其根据用户设备(UE)所属的覆盖级的标识确定所述用户设备所使用的随机接入无线网络临时标识(RA-RNTI)。
根据本发明实施例的第五方面，提供了一种随机接入无线网络临时标识的确定装置，配置于用户设备(UE)，其中，该装置包括：
第一确定单元，其根据根据所述UE所属的覆盖级的标识确定所述UE所使用的随机接入无线网络临时标识(RA-RNTI)。
根据本发明实施例的第六方面，提供了一种通信系统，所述通信系统包括基站和用户设备，其中，所述基站包括前述第四方面所述的随机接入无线网络临时标识的确定装置，所述用户设备包括前述第五方面所述的随机接入无线网络临时标识的确定装置。
本发明实施例的有益效果在于：通过对RA-RNTI的计算方法进行改进，使得由相同RA-RNTI加扰的RAR可以复用到同一个MAC PDU中，降低了UE的能耗。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本发明实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
所包括的附图用来提供对本发明实施例的进一步的理解，其构成了说明书的一部分，用于例示本发明的实施方式，并与文字描述一起来阐释本发明的原理。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性的前提下，还可以根据这些附图获得其他的附图。
在附图中：
图1是实施例1的随机接入响应的传输方法的示意图；
图2是实施例2的随机接入响应的传输方法的示意图；
图3是基站和UE的交互示意图；
图4是实施例3的随机接入响应的传输装置的示意图；
图5是实施例4的随机接入响应的传输装置的示意图；
图6是实施例5的通信系统的示意图；
图7是实施例5的基站的示意图；
图8是实施例5的用户设备的示意图；
图9是实施例6的RA-RNTI的确定方法的示意图；
图10是实施例7的RA-RNTI的确定方法的示意图；
图11是实施例8的RA-RNTI的确定装置的示意图；
图12是实施例9的RA-RNTI的确定装置的示意图；
图13是实施例10的通信系统的示意图；
图14是实施例10的基站的示意图；
图15是实施例11的用户设备的示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。下面结合附图对本发明的各种实施方式进行说明。这些实施方式只是示例性的，不是对本发明的限制。
在本申请中，如无特别说明，网络侧的处理是指基站的处理，基站可以被称为接入点、广播发射机、节点B、演进节点B(eNB)等，并且可以包括它们的一些或所有功能。在文中将使用术语“基站”。每个基站对特定的地理区域提供通信覆盖。
在本申请中，移动站或设备可以被称为“用户设备”(UE)。UE可以是固定的或移动的，并且也可以称为移动台、终端、接入终端、用户单元、站等。UE可以是蜂窝电话、个人数字助理(PDA)、无线调制解调器、无线通信设备、手持设备、膝上型计算机、无绳电话、汽车等。
在本发明实施例中，在RA-RNTI的计算公式中引入UE所属的覆盖级标识(coverage enhancement level identity)，定义为CEL_id。处在不同覆盖级的UE使用不同的RA-RNTI。只有发送给相同覆盖级UE的RAR才会复用到同一个MAC PDU中，从而降低一个MAC PDU中无法容纳所有具有相同RA-RNTI的RAR的概率。此外，由于这些RAR对应的UE具有相同的覆盖级范围，可以使用相同的重复发送次数，更适合复用在同一个MAC PDU发送。
下面结合附图对本发明实施例进行说明。
实施例1
本发明实施例提供一种随机接入响应的传输方法，本发明实施例从基站侧进行说明。
图1是本发明实施例的随机接入响应的传输方法的示意图，如图1所示，所述传输方法包括：
步骤101，基站根据检测到的前导序列(Preamble)的时频资源位置确定发送所述前导序列的用户设备(UE)所属的覆盖级；
步骤102，基站根据所述UE所属的覆盖级的标识计算所述UE所使用的随机接入无线网络临时标识(RA-RNTI)；
步骤103，基站利用所述UE所使用的RA-RNTI对所述UE的随机接入响应 (RAR)进行加扰并传输。
在本实施例中，该用户设备例如可以是NB-IoT系统的终端，但本发明不限于此，例如该用户设备还可以是其他网络系统的终端。本发明实施例仅以NB-IoT系统为例进行说明，但并不限于此，可以适用于任何进行RAR传输的系统。
在本实施例中，该基站可以为该用户设备所属小区的基站；该基站可以为宏基站(例如eNB)，用户设备由该宏基站产生的宏小区(例如Macro cell)提供服务；本发明实施例的基站也可以为微基站，用户设备由该微基站产生的微小区(例如Pico cell或者micro cell)提供服务。本发明实施例不限于此，可以根据实际的需要确定具体的场景。
在本实施例中，根据基站的小区范围内的各UE与基站之间的距离不同，基站的小区范围内的UE被划分为不同的覆盖级，UE根据自己的测量结果可以确定自己所属的覆盖级。
在本实施例中，在RA-RNTI的计算中引入了UE所属的覆盖级标识，由此，具有相同覆盖级的UE的RAR可以使用相同的RA-RNTI加扰，并被复用到同一个MACPDU中传输，大大降低了具有相同RA-RNTI的RAR不能复用到同一个MAC PUD中的概率，降低了UE的功耗。
在本实施例中，基站可以为小区内的每个覆盖级配置可选的时频资源位置，并将各个覆盖级的可选的时频资源位置的信息广播下去，由此，该小区范围内的UE可以接收到这些信息，并根据自己所属的覆盖级确定自己可选的时频资源。在本实施例中，该基站可以通过动态、静态、或半静态的方式进行上述配置，本实施例对此不做限制。
在本实施例中，如前所述，受限于NB-IoT的物理信道传输块的大小，每个MACPDU最多容纳16个RAR数据，因此，基站在进行上述配置时，尽可能使每个覆盖级可用的频率资源的个数小于等于16个，以保证最多16个RAR数据被复用到同一个MAC PDU中传输。
在本实施例中，由于基站为小区内的每个覆盖级配置了可选的时频资源位置，UE在其所属的覆盖级对应的可选的时频资源中选择频率资源发送Preamble。因此，基站在接收到UE发送的Preamble后，即可确定该Preamble的时频资源位置，进而可以确定该UE所属的覆盖级，并根据该UE所属的覆盖级的标识计算该UE所使用的RA-RNTI。可以看出，由于在RA-RNTI的计算中引入了UE所属的覆盖级的标识， 在每次随机接入的机会中，具有相同覆盖级的UE所使用的RA-RNTI是相同的。
在一个实施方式中，该基站可以根据所述UE所属的覆盖级的标识、以及UE在发送该Preamble时所使用的时域资源计算该UE所使用的RA-RNTI。在本实施方式中，在每次随机接入时，各UE所使用的用来发送Preamble的时域资源(例如系统帧号)相同。本实施例并不以此作为限制，在其他实施方式中，该基站也可以基于该UE所属的覆盖级的标识和其他参数来计算该UE所使用的RA-RNTI，或者，该基站也可以仅基于该UE所属的覆盖级的标识计算该UE所使用的RA-RNTI。只要在RA-RNTI的计算过程中引入UE所属的覆盖级的标识，使得具有相同覆盖级的UE的RAR能够复用在同一个MAC PDU上传输即可。
在一个实施方式中，该RA-RNTI的计算公式可以表示为：RA-RNTI＝1+CEL_id+N*(SFN/4)。其中，CEL_id即为该UE所属的覆盖级的标识，根据不同的覆盖级，其可以表示为0、1、2、3…，也可以表示为其他值。其中，N为该基站所配置的覆盖级的总数目，N≥1，例如为4。其中，SFN为系统帧号，其为UE发送该Preamble时所采用的时域资源。
在另一个实施方式中，该RA-RNTI的计算中还可以考虑其他参数，例如超帧号(Hyper System Frame Number，HSFN)等，本实施例不限于此。只要在RA-RNTI的计算中引入覆盖级的标识，只有相同覆盖级的UE才有可能使用相同的RA-RNTI，以便这些UE的RAR可以被复用到同一个MAC PDU中，都包含于本申请的保护范围。
在本实施例中，如前所述，由于具有相同覆盖级的UE所使用的RA-RNTI相同，该基站可以利用具有相同覆盖级的UE所使用的RA-RNTI将具有相同覆盖级的UE的RAR复用到同一个MAC PDU中传输。具体的复用方式可以参考现有技术，此处不再赘述。
在本实施例中，由于复用到同一个MAC PUD中的RAR所对应的UE具有相同覆盖级范围，这些UE的数据可以使用相同的重复发送次数，从而，这些UE的RAR更适合服用在同一个MAC PDU中发送，进一步节省了UE的功耗。
由上述实施例可知，在RA-RNTI中引入UE的覆盖级标识后，可以大大降低具有相同RA-RNTI的RAR无法复用到同一个MAC PDU中的概率，并且使具有相同覆盖级重复发送次数的数据复用在同一个MAC PDU中发送，可以有效的节省UE的 功耗。
实施例2
本发明实施例提供一种随机接入响应的传输方法，本发明实施例从用户设备侧进行说明，与实施例1相同的内容不再赘述。
图2是本发明实施例的随机接入响应的传输方法的示意图，如图2所示，所述传输方法包括：
步骤201，UE根据测量结果确定自己所属的覆盖级；
步骤202，UE从自己所属的覆盖级对应的时频资源中选择用于发送Preamble的频率资源；
步骤203，UE利用选择的频率资源在进行随机接入时发送Preamble；
步骤204，UE根据自己所属的覆盖级的标识计算自己所使用的RA-RNTI；
步骤205，UE根据自己所使用的RA-RNTI在RAR接收窗内解扰PDCCH，并根据发送所述Preamble的频率资源得到自己的RAR。
在本实施例中，如前所述，在RA-RNTI的计算中引入了UE所属的覆盖级的标识，由于具有相同覆盖级的UE的RAR被复用到同一个MAC PDU中传输，UE根据自己所使用的RA-RNTI不需要解码多个MAC PDU即可得到自己的RAR，降低了UE的功耗。
在本实施例中，上述测量结果可以是对信号强度的测量结果，也可以是对信号质量的测量结果，本实施例不限于此，根据该测量结果，UE可以确定自己所属的覆盖级。
在本实施例中，如前所述，基站为UE配置了小区内各覆盖级的可选的时频资源，该UE在确定了自己所属的覆盖级之后，可以从自己所属的覆盖级所对应的时频资源中选择用于发送Preamble的频率资源，以利用所选择的该频率资源在进行随机接入时发送该Preamble。
在本实施例中，UE可以根据自己所属的覆盖级的标识(即CEL_id)、以及发送该Preamble的时域资源(例如系统帧号)计算自己所使用的RA-RNTI。但如前所述，本实施例并不以此作为限制。
在一个实施方式中，如前所述，该RA-RNTI的计算公式为：
RA-RNTI＝1+CEL_id+N*(SFN/4)；
其中，CEL_id为所述UE所属的覆盖级的标识，N为覆盖级的总数目，且N≥1，SFN为系统帧号。
以上计算RA-RNTI的公式只是举例说明，但本实施例并不以此作为限制，如前所述，在其他实施方式中，该RA-RNTI的计算也可以考虑其他参数，只要能通过该RA-RNTI的计算，使得属于相同覆盖级的UE所使用的RA-RNTI相同即可。
在本实施例中，UE可以在RAR的接收窗内，用计算出来的RA-RNTI解扰PDCCH，得到MAC PDU所在的PDSCH，并根据发送Preamble的频率资源(即f_id)从该MAC PDU中解码得到网络反馈给自己的RAR。
下面结合基站和UE的交互，对本实施例的随机接入响应的传输方法进行说明。
图3是基站和UE根据本实施例的传输方法进行交互的示意图，如图3所示，所述传输方法包括：
步骤301，基站为小区内的每个覆盖级配置可选的时频资源位置；
步骤302，基站广播各覆盖级的可选的时频资源位置的配置信息；
步骤303，UE根据测量结果确定自己所属的覆盖级；
步骤304，UE在自己所属的覆盖级对应的时频资源位置中选择用于发送Preamble的频率资源；
步骤305，UE利用选择的频率资源在进行随机接入时发送Preamble；
步骤306，UE计算自己的RA-RNTI；
其中，UE可以根据自己所属的覆盖级的标识来计算该RA-RNTI，例如，根据自己所属的覆盖级的标识、以及发送该Preamble的时域资源(系统帧号)来计算该RA-RNTI，具体计算方式如前所述。
步骤307，基站根据检测到的Preamble的时频资源位置确定UE所使用的RA-RNTI；
其中，基站在接收到Preamble之后，可以确定该Preamble的时频资源位置，例如发送该Preamble的时域资源(系统帧号)，频率资源等，由于该基站为不同的覆盖级配置了不同的可选的时频资源，通过检测到的该Preamble的时频资源位置，该基站可以确定发送该Preamble的UE所属的覆盖级，由此可以采用与UE相同的方式计算该UE所使用的RA-RNTI。
步骤308：基站利用该RA-RNTI对具有相同覆盖级的UE的RAR进行加扰并传 输；
其中，对于具有相同覆盖级的UE，由于这些UE所使用的RA-RNTI是相同的，基站可以将这些UE的RAR复用到同一个MAC PDU中，并且用这些UE所使用的该相同的RA-RNTI对该MAC PDU进行加扰，并传输。具体的加扰和传输方式可以参考现有技术。
步骤309：UE在RAR的接收窗内用自己的RA-RNTI解扰PDCCH，得到网络侧反馈给自己的RAR。
其中，UE利用自己的RA-RNTI解扰PDCCH，得到MAC PDU所在的PDSCH的位置，进而从该位置得到MAC PDU，再根据自己发送Preamble的频率位置，从该MAC PDU中解码得到自己的RAR。
以上通过图3的交互过程对本实施例的RAR的传输方法进行了说明，本实施例对图3中各步骤的执行顺序不做限制，例如，步骤306和步骤307可以先后执行，也可以并行执行。此外，在具体实施过程中，例如在随机接入过程中，可以增加某些步骤，也可以减少或者合并某些步骤。
由上述实施例可知，在RA-RNTI中引入UE的覆盖级标识后，可以大大降低具有相同RA-RNTI的RAR无法复用到同一个MAC PDU中的概率，并且使具有相同覆盖级重复发送次数的数据复用在同一个MAC PDU中发送，可以有效的节省UE的功耗。
实施例3
本发明实施例提供一种随机接入响应的传输装置，可以配置于基站。本发明实施例与实施例1的传输方法对应，相同的内容不再赘述。
图4是本发明实施例的随机接入响应的传输装置的示意图，如图4所示，随机接入响应的传输装置400包括：
确定单元401，其根据检测到的前导序列(Preamble)的时频资源位置确定发送所述前导序列的用户设备(UE)所属的覆盖级；
计算单元402，其根据所述UE所属的覆盖级的标识计算所述UE所使用的随机接入无线网络临时标识(RA-RNTI)；
传输单元403，其利用所述UE的RA-RNTI对所述UE的随机接入响应(RAR)进行加扰并传输。
如图4所示，随机接入响应的传输装置400还可以包括：
配置单元404，其为小区内的每个覆盖级配置可选的时频资源位置；
广播单元405，其广播各个覆盖级的可选的时频资源位置的配置信息。
在本实施例中，广播单元405和传输单元403可以合并为一个模块。
在本实施例中，具有不同覆盖级的UE所使用的RA-RNTI不同，传输单元403可以利用具有相同覆盖级的UE所使用的RA-RNTI，将具有相同覆盖级的UE的随机接入响应(RAR)复用到同一个媒体接入层协议数据单元(MAC PDU)中传输。
在本实施例中，计算单元402可以根据所述UE所属的覆盖级的标识、以及UE发送所述Preamble的时域资源，计算所述UE所使用的RA-RNTI。然而，如前所述，本实施例并不以此作为限制。
在一个实施方式中，该计算单元402可以利用下面的公式计算UE所使用的RA-RNTI：
RA-RNTI＝1+CEL_id+N×(SFN/4)；
其中，CEL_id为所述UE所属的覆盖级的标识，N为覆盖级的总数目，且N≥1，SFN为所述UE发送所述Preamble的系统帧号。
由上述实施例可知，在RA-RNTI中引入UE的覆盖级标识后，可以大大降低具有相同RA-RNTI的RAR无法复用到同一个MAC PDU中的概率，并且使具有相同覆盖级重复发送次数的数据复用在同一个MAC PDU中发送，可以有效的节省UE的功耗。
实施例4
本发明实施例提供一种随机接入响应的传输装置，可以配置于用户设备。本发明实施例与实施例2的传输方法对应，相同的内容不再赘述。
图5是本发明实施例的随机接入响应的传输装置的示意图，如图5所示，随机接入响应的传输装置500包括：
确定单元501，其根据测量结果确定所述UE所属的覆盖级；
选择单元502，其从所述UE所属的覆盖级对应的时频资源中选择用于发送Preamble的频率资源；
发送单元503，其利用选择的频率资源在进行随机接入时发送Preamble；
计算单元504，其根据所述UE所属的覆盖级的标识计算所述UE所使用的 RA-RNTI；
处理单元505，其根据所述UE所使用的RA-RNTI在RAR的接收窗内解扰所述UE的PDCCH，根据所述发送单元503发送所述Preamble的频率资源得到所述UE的RAR。
在本实施例中，该计算单元504可以根据所述UE所属的覆盖级的标识、以及所述发送单元503发送所述Preamble的时域资源计算该UE所使用的RA-RNTI。然而如前所述，本实施例并不以此作为限制。
在一个实施方式中，该计算单元504可以利用下面的公式计算UE所使用的RA-RNTI：
RA-RNTI＝1+CEL_id+N*(SFN/4)；
其中，CEL_id为所述UE所属的覆盖级的标识，N为覆盖级的总数目，且N≥1，SFN为所述发送单元503发送所述Preamble的系统帧号(时域资源)。
在本实施例中，处理单元505解扰了所述PDCCH后，可以得到其MAC PDU所在的PDSCH，进而得到该MAC PDU，并利用上述频率资源从该MAC PDU中解码得到网络侧反馈给自己的RAR。
由上述实施例可知，在RA-RNTI中引入UE的覆盖级标识后，可以大大降低具有相同RA-RNTI的RAR无法复用到同一个MAC PDU中的概率，并且使具有相同覆盖级重复发送次数的数据复用在同一个MAC PDU中发送，可以有效的节省UE的功耗。
实施例5
本发明实施例提供一种通信系统，与实施例1至4相同的内容不再赘述。
图6是本发明实施例的通信系统的构成示意图，如图6所示，该通信系统600包括基站601以及用户设备602。其中，基站601可以配置有如实施例3所述的随机接入响应的传输装置400；用户设备602可以配置有如实施例4所述的随机接入响应的传输装置500。
本发明实施例还提供一种基站。
图7是本发明实施例的基站的构成示意图。如图7所示，基站700可以包括：中央处理器(CPU)701和存储器702；存储器702耦合到中央处理器701。其中该存储器702可存储各种数据；此外还存储信息处理的程序，并且在中央处理器701的控 制下执行该程序，以接收用户设备发送的各种信息、并且向用户设备发送请求信息。
在一个实施方式中，随机接入响应的传输装置400的功能可以被集成到中央处理器701中。其中，中央处理器701可以被配置为实现实施例1所述的随机接入响应的传输方法。
例如，该中央处理器701可以被配置为进行如下控制：根据检测到的前导序列(Preamble)的时频资源位置确定发送所述前导序列的用户设备(UE)所属的覆盖级；根据所述UE所属的覆盖级的标识计算所述UE所使用的随机接入无线网络临时标识(RA-RNTI)；利用所述UE的RA-RNTI对所述UE的随机接入响应(RAR)进行加扰并传输。
在另一个实施方式中，随机接入响应的传输装置400可以与中央处理器701分开配置，例如可以将随机接入响应的传输装置400配置为与中央处理器701连接的芯片，通过中央处理器701的控制来实现随机接入响应的传输装置400的功能。
此外，如图7所示，基站700还可以包括：收发机703和天线704等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，基站700也并不是必须要包括图7中所示的所有部件；此外，基站700还可以包括图7中没有示出的部件，可以参考现有技术。
本实施例还提供了一种用户设备。
图8是本发明实施例的用户设备800的系统构成的示意框图。如图8所示，该用户设备800可以包括中央处理器801和存储器802；存储器802耦合到中央处理器801。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
如图8所示，中央处理器801有时也称为控制器或操作控件，可以包括微处理器或其他处理器装置和/或逻辑装置，该中央处理器801接收输入并控制用户设备800的各个部件的操作。
其中，中央处理器801可以被配置为实现实施例2所述的随机接入响应的传输方法。例如，中央处理器801可以被配置为进行如下控制：根据测量结果确定所述UE所属的覆盖级；从所述UE所属的覆盖级对应的时频资源中选择频率资源；利用选择的频率资源在进行随机接入时发送Preamble；根据所述UE所属的覆盖级的标识计算所述UE所使用的RA-RNTI；根据所述UE所使用的RA-RNTI在RAR的接收窗内解 扰所述UE的PDCCH，根据发送所述Preamble的频率资源得到所述UE的RAR。
如图8所示，该用户设备800还可以包括：通信模块803、输入单元804、音频处理器805、显示器806、电源807。值得注意的是，用户设备800也并不是必须要包括图8中所示的所有部件；此外，用户设备800还可以包括图8中没有示出的部件，可以参考现有技术。
本发明实施例还提供一种计算机可读程序，其中当在基站中执行所述程序时，所述程序使得所述基站执行如实施例1所述的随机接入响应的传输方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得基站执行如实施例1所述的随机接入响应的传输方法。
本发明实施例还提供一种计算机可读程序，其中当在用户设备中执行所述程序时，所述程序使得所述用户设备执行如实施例2所述的随机接入响应的传输方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得用户设备执行如实施例2所述的随机接入响应的传输方法。
实施例6
本发明实施例提供一种随机接入无线网络临时标识的确定方法，本发明实施例从基站侧进行说明。其中与实施例1相同的内容不再重复说明。
图9是该方法的流程图，请参照图9，该方法包括：
步骤901：基站根据用户设备(UE)所属的覆盖级的标识确定所述用户设备所使用的随机接入无线网络临时标识(RA-RNTI)。
在本实施例中，关于基站、UE、以及覆盖级的定义与实施例1相同，此处不再赘述。
在本实施例中，基站还可以为小区内每个覆盖级配置可选的时频资源位置，以便根据接收到的UE发送的Preamble确定该UE所属的覆盖级。具体的配置方式与实施例1相同，此处不再赘述。
在本实施例中，该基站可以根据UE所属的覆盖级的标识和该UE发送Preamble的时域资源计算该UE所使用的RA-RNTI，例如采用前述实施例1的计算公式来计算该RA-RNTI。但如前所述，本实施例并不以此作为限制。
在本实施例中，由于具有相同覆盖级的UE所使用的RA-RNTI相同，基站在确定了该UE所使用的RA-RNTI之后，即可将具有相同覆盖级的UE的RAR复用到同 一个MAC PDU中传输。
在本实施例中，在RA-RNTI的计算中引入了UE所属的覆盖级的标识，可以大大降低具有相同RA-RNTI的RAR无法复用到同一个MAC PDU中的概率，并且使具有相同覆盖级重复发送次数的数据复用在同一个MAC PDU中发送，可以有效的节省UE的功耗。
实施例7
本发明实施例提供一种随机接入无线网络临时标识的确定方法，本发明实施例从用户设备侧进行说明。其中与实施例1或实施例2相同的内容不再重复说明。
图10是该方法的流程图，请参照图10，该方法包括：
步骤1001：用户设备(UE)根据自己所属的覆盖级的标识确定自己所使用的随机接入无线网络临时标识(RA-RNTI)。
在本实施例中，关于基站、UE、以及覆盖级的定义与实施例1相同，此处不再赘述。
在本实施例中，UE还可以接收基站广播的配置信息，以确定各覆盖级所对应的可选的时频资源。
在本实施例中，UE可以根据自己的测量结果确定自己所属的覆盖级，并在该覆盖级对应的时频资源中选择一个频率资源用于发送Preamble。
在本实施例中，该UE可以根据所属的覆盖级的标识和发送Preamble的时域资源计算该UE所使用的RA-RNTI，例如采用前述实施例2的计算公式来计算该RA-RNTI。但如前所述，本实施例并不以此作为限制。
在本实施例中，UE在确定了自己所使用的RA-RNTI之后，即可利用该RA-RNTI在RAR的接收窗内解扰PDCCH，进而得到MAC PDU所在的PDSCH的位置，得到该MAC PDU之后，即可利用发送该Preamble的频率资源解码得到自己的RAR。
在本实施例中，在RA-RNTI的计算中引入了UE所属的覆盖级的标识，可以大大降低具有相同RA-RNTI的RAR无法复用到同一个MAC PDU中的概率，并且使具有相同覆盖级重复发送次数的数据复用在同一个MAC PDU中发送，可以有效的节省UE的功耗。
实施例8
本发明实施例提供一种随机接入无线网络临时标识的确定装置，该装置可以配置 于基站。其中与实施例1、6相同的内容不再重复说明。
图11是该装置的示意图，请参照图11，该装置1100包括：第一确定单元1101，其根据用户设备(UE)所属的覆盖级的标识确定所述用户设备所使用的随机接入无线网络临时标识(RA-RNTI)。
在本实施例中，关于基站、UE、以及覆盖级的定义与实施例1相同，此处不再赘述。
在本实施例中，如图11所示，该装置1100还可以包括：配置单元1102，其为小区内每个覆盖级配置可选的时频资源位置。具体的配置方式与实施例1相同，此处不再赘述。
在本实施例中，如图11所示，该装置1100还可以包括：接收单元1103，其接收UE发送的Preamble；以及第二确定单元1103，其根据接收到的UE发送的Preamble确定该UE所属的覆盖级。进一步的，该第二确定单元1103还可以根据接收到的UE发送的Preamble确定该Preamble的时频资源。
在本实施例中，该第一确定单元1101可以根据UE所属的覆盖级的标识和该UE发送Preamble的时域资源计算该UE所使用的RA-RNTI，例如采用前述实施例1的计算公式来计算该RA-RNTI。但如前所述，本实施例并不以此作为限制。
在本实施例中，由于具有相同覆盖级的UE所使用的RA-RNTI相同，基站在确定了该UE所使用的RA-RNTI之后，即可将具有相同覆盖级的UE的RAR复用到同一个MAC PDU中传输。
在本实施例中，在RA-RNTI的计算中引入了UE所属的覆盖级的标识，可以大大降低具有相同RA-RNTI的RAR无法复用到同一个MAC PDU中的概率，并且使具有相同覆盖级重复发送次数的数据复用在同一个MAC PDU中发送，可以有效的节省UE的功耗。
实施例9
本发明实施例提供一种随机接入无线网络临时标识的确定装置，该装置配置于用户设备。其中与实施例1或实施例2或实施例7相同的内容不再重复说明。
图12是该装置的示意图，请参照图12，该装置1200包括：
第一确定单元1201，其根据所述UE所属的覆盖级的标识确定所述UE所使用的随机接入无线网络临时标识(RA-RNTI)。
在本实施例中，关于基站、UE、以及覆盖级的定义与实施例1相同，此处不再赘述。
在本实施例中，如图12所示，该装置1200还可以包括：
接收单元1202，其接收基站广播的配置信息；
第二确定单元1203，其根据所述配置信息确定各覆盖级所对应的可选的时频资源。
在本实施例中，如图12所示，该装置1200还可以包括：
第三确定单元1204，其根据所述UE的测量结果确定所述UE所属的覆盖级。
在本实施例中，该UE可以在该覆盖级对应的时频资源中选择一个频率资源用于发送Preamble。
在本实施例中，该第一确定单元1201可以根据所述UE所属的覆盖级的标识和所述UE发送Preamble的时域资源计算该UE所使用的RA-RNTI，例如采用前述实施例2的计算公式来计算该RA-RNTI。但如前所述，本实施例并不以此作为限制。
在本实施例中，UE在确定了自己所使用的RA-RNTI之后，即可利用该RA-RNTI在RAR的接收窗内解扰PDCCH，进而得到MAC PDU所在的PDSCH的位置，得到该MAC PDU之后，即可利用发送该Preamble的频率资源解码得到自己的RAR。
在本实施例中，在RA-RNTI的计算中引入了UE所属的覆盖级的标识，可以大大降低具有相同RA-RNTI的RAR无法复用到同一个MAC PDU中的概率，并且使具有相同覆盖级重复发送次数的数据复用在同一个MAC PDU中发送，可以有效的节省UE的功耗。
实施例10
本发明实施例提供一种通信系统，与实施例6至9相同的内容不再赘述。
图13是本发明实施例的通信系统的构成示意图，如图13所示，该通信系统1300包括基站1301以及用户设备1302。其中，基站1301可以配置有如实施例7所述的RA-RNTI的确定装置1000；用户设备1302可以配置有如实施例9所述的RA-RNTI的确定装置1200。
本发明实施例还提供一种基站。
图14是本发明实施例的基站的构成示意图。如图14所示，基站1400可以包括：中央处理器(CPU)1401和存储器1402；存储器1402耦合到中央处理器1401。其 中该存储器1402可存储各种数据；此外还存储信息处理的程序，并且在中央处理器1401的控制下执行该程序，以接收用户设备发送的各种信息、并且向用户设备发送请求信息。
在一个实施方式中，RA-RNTI的确定装置1000的功能可以被集成到中央处理器1401中。其中，中央处理器1401可以被配置为实现实施例6所述的RA-RNTI的确定方法。
例如，该中央处理器1401可以被配置为进行如下控制：根据用户设备(UE)所属的覆盖级的标识确定所述用户设备所使用的随机接入无线网络临时标识(RA-RNTI)。
在另一个实施方式中，RA-RNTI的确定装置1000可以与中央处理器1401分开配置，例如可以将RA-RNTI的确定装置1000配置为与中央处理器1401连接的芯片，通过中央处理器1401的控制来实现RA-RNTI的确定装置1000的功能。
此外，如图14所示，基站1400还可以包括：收发机1403和天线1404等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，基站1400也并不是必须要包括图14中所示的所有部件；此外，基站1400还可以包括图14中没有示出的部件，可以参考现有技术。
本实施例还提供了一种用户设备。
图15是本发明实施例的用户设备1500的系统构成的示意框图。如图15所示，该用户设备1500可以包括中央处理器1501和存储器1502；存储器1502耦合到中央处理器1501。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
如图15所示，中央处理器1501有时也称为控制器或操作控件，可以包括微处理器或其他处理器装置和/或逻辑装置，该中央处理器1501接收输入并控制用户设备1500的各个部件的操作。
其中，中央处理器1501可以被配置为实现实施例8所述的RA-RNTI的确定方法。例如，中央处理器1501可以被配置为进行如下控制：根据用户设备(UE)所属的覆盖级的标识确定所述用户设备所使用的随机接入无线网络临时标识(RA-RNTI)。
如图15所示，该用户设备1500还可以包括：通信模块1503、输入单元1504、音频处理器1505、显示器1506、电源1507。值得注意的是，用户设备1500也并不 是必须要包括图15中所示的所有部件；此外，用户设备1500还可以包括图15中没有示出的部件，可以参考现有技术。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本发明实施例描述的装置和/或方法可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图4或图5或图10或图12中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图1所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(例如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。
关于包括以上实施例的实施方式，还公开下述的附记：
附记1，一种随机接入无线网络临时标识的确定方法，其中，所述方法包括：
基站根据用户设备(UE)所属的覆盖级的标识确定所述用户设备所使用的随机接入无线网络临时标识(RA-RNTI)。
附记2，根据附记1所述的方法，其中，所述方法还包括：
所述基站为小区内每个覆盖级配置可选的时频资源位置；
所述基站广播各个覆盖级的可选的时频资源位置的配置信息。
附记3，根据附记1所述的方法，其中，所述方法还包括：
所述基站根据接收到的UE发送的Preamble确定该UE所属的覆盖级。
附记4，根据附记1所述方法，其中，所述基站根据所述UE所属的覆盖级的标识和该UE发送Preamble的时域资源计算该UE所使用的RA-RNTI。
附记5，根据附记1所述的方法，其中，所述基站根据以下公式计算所述RA-RNTI：
RA-RNTI＝1+CEL_id+N*(SFN/4)；
其中，CEL_id为所述UE所属的覆盖级的标识，N为覆盖级的总数目，且N≥1，SFN为所述UE发送所述Preamble的系统帧号。
附记6，一种随机接入无线网络临时标识的确定方法，其中，所述方法包括：
用户设备(UE)根据自己所属的覆盖级的标识确定自己所使用的随机接入无线网络临时标识(RA-RNTI)。
附记7，根据附记6所述的方法，其中，所述方法还包括：
所述UE接收基站广播的配置信息；
所述UE根据所述配置信息确定各覆盖级所对应的可选的时频资源。
附记8，根据附记6所述的方法，其中，所述方法还包括：
所述UE根据自己的测量结果确定自己所属的覆盖级。
附记9，根据附记6所述方法，其中，所述UE根据所述UE所属的覆盖级的标识和该UE发送Preamble的时域资源计算该UE所使用的RA-RNTI。
附记10，根据附记9所述的方法，其中，所述UE根据以下公式计算所述RA-RNTI：
RA-RNTI＝1+CEL_id+N*(SFN/4)；
其中，CEL_id为所述UE所属的覆盖级的标识，N为覆盖级的总数目，且N≥1，SFN为所述UE发送所述Preamble的系统帧号。

Claims (10)

  1. 一种随机接入响应的传输装置，配置于基站，其中，该装置包括：
    确定单元，其根据检测到的前导序列(Preamble)的时频资源位置确定发送所述前导序列的用户设备(UE)所属的覆盖级；
    计算单元，其根据所述UE所属的覆盖级的标识计算所述UE所使用的随机接入无线网络临时标识(RA-RNTI)；
    传输单元，其利用所述UE的RA-RNTI对所述UE的随机接入响应(RAR)进行加扰并传输。
  2. 根据权利要求1所述的装置，其中，所述装置还包括：
    配置单元，其小区内的每个覆盖级配置可选的时频资源位置；
    广播单元，其广播各个覆盖级的可选的时频资源位置的配置信息。
  3. 根据权利要求2所述的装置，其中，每个覆盖级的可用的频率资源的个数小于等于16个。
  4. 根据权利要求1所述的装置，其中，不同覆盖级的UE所使用的RA-RNTI不同，所述传输单元利用具有相同覆盖级的UE所使用的RA-RNTI，将具有相同覆盖级的UE的随机接入响应(RAR)复用到同一个媒体接入层协议数据单元(MAC PDU)中传输。
  5. 根据权利要求1所述的装置，其中，所述计算单元根据所述UE所属的覆盖级的标识、以及所述UE发送所述Preamble的时域资源，计算所述UE所使用的RA-RNTI。
  6. 根据权利要求5所述的装置，其中，所述计算单元根据以下公式计算所述RA-RNTI：
    RA-RNTI＝1+CEL_id+N*(SFN/4)；
    其中，CEL_id为所述UE所属的覆盖级的标识，N为覆盖级的总数目，且N≥1，SFN为所述UE发送所述Preamble的系统帧号。
  7. 一种随机接入响应的传输装置，配置于用户设备(UE)，其中，该装置包括：
    确定单元，其根据测量结果确定所述UE所属的覆盖级；
    选择单元，其从所述UE所属的覆盖级对应的时频资源中选择频率资源；
    发送单元，其利用所述选择单元选择的频率资源在所述UE进行随机接入过程时发送Preamble；
    计算单元，其根据所述UE所属的覆盖级计算所述UE所使用的RA-RNTI；
    处理单元，其根据所述UE根据所使用的RA-RNTI在RAR的接收窗内解扰PDCCH，根据所述发送单元发送所述Preamble的频率资源得到所述UE的RAR。
  8. 根据权利要求7所述的装置，其中，所述计算单元根据所述UE所属的覆盖级的标识、以及所述UE发送所述Preamble的时域资源，计算所述UE所使用的RA-RNTI。
  9. 根据权利要求8所述的装置，其中，所述计算单元根据以下公式计算所述RA-RNTI：
    RA-RNTI＝1+CEL_id+N*(SFN/4)；
    其中，CEL_id为所述UE所属的覆盖级的标识，N为覆盖级的总数目，且N≥1，SFN为所述发送单元发送所述Preamble的系统帧号。
  10. 一种通信系统，所述通信系统包括基站和用户设备，其中，所述基站包括权利要求1所述的随机接入响应的传输装置，所述用户设备包括权利要求7所述的随机接入响应的传输装置。
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