WO2016165388A1 - Procédé et dispositif de traitement d'accès aléatoire - Google Patents

Procédé et dispositif de traitement d'accès aléatoire Download PDF

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Publication number
WO2016165388A1
WO2016165388A1 PCT/CN2015/098309 CN2015098309W WO2016165388A1 WO 2016165388 A1 WO2016165388 A1 WO 2016165388A1 CN 2015098309 W CN2015098309 W CN 2015098309W WO 2016165388 A1 WO2016165388 A1 WO 2016165388A1
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random access
node
dci
channel
level
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PCT/CN2015/098309
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English (en)
Chinese (zh)
Inventor
刘锟
戴博
鲁照华
夏树强
陈宪明
石靖
张雯
方惠英
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中兴通讯股份有限公司
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Publication of WO2016165388A1 publication Critical patent/WO2016165388A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present invention relates to the field of communications, and in particular to a method and apparatus for processing random access.
  • MTC UE Machine Type Communication (MTC) User Terminal (MTC UE), also known as Machine to Machine (M2M) user communication equipment, is the main application form of the Internet of Things at this stage. .
  • M2M devices deployed on the market are mainly based on the Global System of Mobile communication (GSM) system.
  • GSM Global System of Mobile communication
  • LTE Long Term Evolution
  • LTE-A Subsequent evolution of LTE
  • M2M multi-class data services based on LTE/LTE-A will also be more attractive. Only when the cost of the LTE-M2M device can be lower than the MTC terminal of the GSM system can the M2M service be truly transferred from the GSM to the LTE system.
  • the main alternative methods for reducing the cost of the MTC user terminal include: reducing the number of terminal receiving antennas, reducing the baseband processing bandwidth of the terminal, reducing the peak rate supported by the terminal, adopting a half-duplex mode, and the like.
  • the cost reduction means that the performance is degraded.
  • the demand for the LTE/LTE-A system cell coverage cannot be reduced. Therefore, the MTC terminal with low-cost configuration needs to take some measures to meet the coverage performance requirements of the existing LTE terminal.
  • the MTC terminal may be located in a basement, a corner, etc., and the scene is worse than that of a normal LTE UE. In order to compensate for the decrease in coverage caused by the penetration loss, some MTC UEs need higher performance improvement.
  • the terminal After the terminal sends a random access sequence (Preamble) on the PRACH, it receives a random access response message (RAR) sent by the base station.
  • the scheduling information of the RAR is included in the downlink control information (Downlink Control Information, DCI for short) and is transmitted through a physical downlink control channel (Physical Downlink Control Channel, PDCCH for short), wherein the DCI information further includes 16 bits.
  • Cyclic Redundancy Check (CRC) and the CRC is further scrambled by a 16-bit Random Access Radio Network Temporary Identity (RA-RNTI).
  • RA-RNTI Random Access Radio Network Temporary Identity
  • the value of the RA-RNTI is determined by the PRACH occupied by the Preamble sequence sent by the terminal, as follows:
  • RA_RNTI 1+t_id+10*f_id
  • t_id (0 ⁇ t_id ⁇ 10) is an index of a subframe in which the first PRACH occupied by the Preamble sequence transmitted by the terminal is located; and f_id is a frequency domain resource index of the transmitted PRACH allocated to the terminal in the subframe indicated by t_id ( Arranged in ascending order and 0 ⁇ f_id ⁇ 6)
  • the UE receives the RAR message and obtains uplink time synchronization.
  • the embodiment of the invention provides a processing method and device for random access, so as to at least solve the design problem of lacking enhanced random access in the related art.
  • An embodiment of the present invention provides a method for processing random access, including: a first node receives random access signaling sent by a second node; and the first node sends a response to the second node by using a downlink channel.
  • the random access response information of the random access signaling where the random access response information is sent in a random access response message.
  • the downlink channel includes: a downlink control channel and a downlink traffic channel.
  • the downlink control channel includes at least one of: a physical downlink control channel PDCCH, an enhanced physical downlink control channel (EPDCCH), and the downlink traffic channel includes: a physical downlink shared channel (PDSCH).
  • PDCCH physical downlink control channel
  • EPDCCH enhanced physical downlink control channel
  • PDSCH physical downlink shared channel
  • the sending, by the first node, the random access response information in response to the random access signaling to the second node by using the downlink channel by using, by the first node, the The second node sends the first downlink control information DCI and/or the second downlink control information DCI, where the first DCI carries a first quantity of the random access response information, and the second DCI carries a second number of scheduling information of the random access response information.
  • the first DCI and the second DCI are carried in the downlink control channel, and the number of bits supported by the first DCI and the second DCI is different.
  • the method further includes: performing a random access wireless network
  • the temporary identifier RA-RNTI scrambles the first DCI and/or the second DCI cyclic redundancy check code CRC.
  • the RA-RNTI values used by the first DCI are different for different random access sequence indexes.
  • the scheduling information carried by the second DCI includes at least one of: time domain resource allocation information of a downlink traffic channel carrying the second quantity of random access response information; and carrying the second quantity Random access response letter
  • the frequency domain resource allocation information of the downlink traffic channel of the information the repeated transmission times information of the downlink traffic channel carrying the second number of random access response information.
  • the sending, by the first node, the random access response information in response to the random access signaling to the second node by using the downlink channel by using, by the first node, the The second node sends the first downlink control information DCI and the second downlink control information DCI, where the first DCI carries a third quantity of the random access response information, and the second DCI carries a fourth A quantity of scheduling information of the random access response information.
  • the first DCI and/or the second DCI are carried in the downlink control channel, and the first DCI and the second DCI support the same number of bits.
  • the first DCI and the second DCI carry indication information for indicating a DCI category.
  • the second DCI carries part of the fourth number of random access response information.
  • the method further includes: performing a random access wireless network
  • the temporary identifier RA-RNTI scrambles the first DCI and the second DCI cyclic redundancy check code CRC.
  • the RA-RNTI used by the first DCI and the second DCI is different.
  • the RA-RNTI values used by the first DCI are different for different random access sequence indexes.
  • the sending, by the first node, the first downlink control information DCI and the second downlink control information DCI to the second node by using the downlink channel by using, by the first node, the The second node sends the first downlink control information DCI and/or the second downlink control information DCI, where the first downlink control information carries the first level of random access response information, and the second downlink control The information carries scheduling information of the second level of random access response information.
  • the first level includes at least one of: a maximum level of a default configuration, a maximum level configured by the first node, a determined level configured by the first node, and the second level includes the following: At least one of: a lowest level of a default configuration, a level other than a default configuration highest level, a lowest level configured by the first node, and a level other than the highest level among the levels configured by the first node .
  • the start position of the time-frequency resource occupied by the random access signaling sent by the second node is determined by at least one of: a level j of the second node; a random access letter of level j The number of random access channel allocation units occupied by the transmission Rj ; the frequency domain position index f occupied by the random access channel allocation unit selected by the second node.
  • the time-frequency resource occupied by the random access signaling sent by the second node is one or more of the random access channel allocating units.
  • the size of the random access channel allocation unit is configured by the first node or by a standard default, and the first node configuration or the standard default configuration is described by two dimensions: time domain and frequency.
  • the random access channel allocation unit occupies 1 subframe in the time domain and 6 physical resource blocks PRB in the frequency domain.
  • Random access channel allocation unit Composition 0 is the first available random access channel allocation unit index in the frequency position index f in a predefined time window; To allocate a unit index for the last available random access channel on the frequency position index f in a predefined time window; 0 ⁇ f ⁇ F-1, where F is the frequency domain position occupied by the random access channel allocation unit of level j Quantity.
  • the receiving, by the first node, the random access signaling sent by the second node includes: receiving, by the first node, consecutive R j of the random starting from the selected starting location Transmitting, by the access channel allocating unit, the random access signaling, wherein the starting location is that the second node selects one of the set of access Sjs as the second node from the set Sj The starting position of the time-frequency resource occupied by the transmitted random access signaling.
  • the starting subframe occupied by the random access signaling sent by the second node is determined by at least one of the following: a level j of the second node; and a random access signaling of level j is occupied by the random access signaling
  • the random access subframe number R j wherein the random access subframe refers to a subframe configured with a random access channel allocation unit.
  • the receiving, by the first node, the random access signaling sent by the second node includes: the first node receiving, by the second node, consecutive R j starting from the selected starting subframe Transmitting the random access signaling on the random access subframe, where the second node selects one of the random access subframes from the set Sj as the random access signaling sent by the second node The starting subframe occupied.
  • the number of frequency domain locations occupied by the random access channel allocation unit of the level j is F, and the indexes are 0, 1, ..., F-1; wherein the F random access channel allocation units are in the system
  • the distribution within the bandwidth is such that the random access channel allocation unit of the even index number is distributed on one side of the system bandwidth, and the random access channel allocation unit of the odd index number is distributed on the other side of the system bandwidth.
  • the random access channel allocation unit is distributed on both sides of the system bandwidth; the index number of at least one of the random access channel allocation units in the random access channel allocation unit that is occupied by the frequency hopping mode is an odd number; the frequency hopping mode The index number of at least one of the random access channel allocation units in the random access channel allocation unit that is occupied by the transmission is even; the number of frequency domain positions occupied by the random access channel allocation unit occupied by the frequency hopping mode is greater than 2; wherein the indexes of the L random access channel allocation units are mod(f, F), mod(f+1, F), ..., mod(f+L-1, F); wherein f is An index of a random access channel allocation unit corresponding to a start position of a time-frequency resource occupied by the random access signaling sent by the second node.
  • the level refers to at least one of the following: an coverage enhancement level, a random access channel PRACH coverage enhancement level, and a random access channel PRACH channel repeated transmission level.
  • the first node includes at least one of: a macro base station, a micro base station, a pico base station, a femto base station, a low power node, and a relay station; and the second node includes at least one of: one or more people Human H2H communication terminal, one or more machine to machine M2M communication terminals, one or more devices to device D2D communication terminals.
  • a method for processing random access including: a second node sends random access signaling to a first node; and the second node receives the first through a downlink channel The node is responsive to the random access response information sent by the random access signaling, wherein the random access response information is sent in a random access response message.
  • the downlink channel includes: a downlink control channel and a downlink traffic channel.
  • the downlink control channel includes at least one of the following: a physical downlink control channel PDCCH, an enhanced physical downlink control channel (EPDCCH), and the downlink traffic channel includes: a physical downlink shared channel (PDSCH).
  • a physical downlink control channel PDCCH an enhanced physical downlink control channel
  • EPDCCH enhanced physical downlink control channel
  • PDSCH physical downlink shared channel
  • the receiving, by the second node, the random access response information that is sent by the first node in response to the random access signaling by using the downlink channel includes: receiving, by the second node, the a first downlink control information DCI and/or a second downlink control information DCI sent by a node, where the first DCI carries a first quantity of the random access response information, and the second DCI carries There is a second number of scheduling information of the random access response information.
  • the first DCI and the second DCI are carried in the downlink control channel, and the number of bits supported by the first DCI and the second DCI is different.
  • the method before the receiving, by the second node, the first downlink control information DCI and the second downlink control information DCI sent by the first node by using the downlink channel, the method further includes: performing wireless access by using random access
  • the network temporary identity RA-RNTI scrambles the first DCI and/or the second DCI cyclic redundancy check code CRC.
  • the RA-RNTI values used by the first DCI are different for different random access sequence indexes.
  • the scheduling information carried by the second DCI includes at least one of: time domain resource allocation information of a downlink traffic channel carrying the second quantity of random access response information; and carrying the second quantity The frequency domain resource allocation information of the downlink traffic channel of the random access response information; the repeated transmission times information of the downlink traffic channel carrying the second number of random access response information.
  • the receiving, by the second node, the random access response information that is sent by the first node in response to the random access signaling by using the downlink channel includes: receiving, by the second node, the a first downlink control information DCI and a second downlink control information DCI sent by a node, where the first DCI carries a third quantity of the random access response information, and the second DCI carries a first Four sets of scheduling information of the random access response information.
  • the first DCI and the second DCI are carried in the downlink control channel, and the first DCI and the second DCI support the same number of bits.
  • the first DCI and/or the second DCI carry indication information for indicating a DCI category.
  • the second DCI carries part of the fourth number of random access response information.
  • the method before the receiving, by the second node, the first downlink control information DCI and the second downlink control information DCI sent by the first node by using the downlink channel, the method further includes: performing wireless access by using random access The network temporary identity RA-RNTI scrambles the first DCI and the second DCI cyclic redundancy check code CRC.
  • the RA-RNTI used by the first DCI and the second DCI is different.
  • the RA-RNTI values used by the first DCI are different for different random access sequence indexes.
  • the receiving, by the second node, the first downlink control information DCI and the second downlink control information DCI sent by the first node by using the downlink channel where the second node receives the downlink channel by using the downlink channel
  • the first downlink control information DCI and/or the second downlink control information DCI sent by the first node where the first downlink control information carries a first level of random access response information
  • the second The downlink control information carries scheduling information of the second-level random access response information.
  • the first level includes at least one of: a maximum level of a default configuration, a maximum level configured by the first node, a determined level configured by the first node, and the second level includes the following: At least one of: a lowest level of a default configuration, a level other than a default configuration highest level, a lowest level configured by the first node, and a level other than the highest level among the levels configured by the first node .
  • the start position of the time-frequency resource occupied by the random access signaling sent by the second node is determined by at least one of: a level j of the second node; a random access letter of level j The number of random access channel allocation units occupied by the transmission Rj ; the frequency domain position index f occupied by the random access channel allocation unit selected by the second node.
  • the time-frequency resource occupied by the random access signaling sent by the second node is one or more of the random access channel allocating units.
  • the size of the random access channel allocation unit is configured by the first node or by a standard default, and the first node configuration or the standard default configuration is described by two dimensions: time domain and frequency.
  • the random access channel allocation unit occupies 1 subframe in the time domain and 6 physical resource blocks PRB in the frequency domain.
  • Random access channel allocation unit Composition 0 is the first available random access channel allocation unit index in the frequency position index f in a predefined time window; To allocate a unit index for the last available random access channel on the frequency position index f in a predefined time window; 0 ⁇ f ⁇ F-1, where F is the frequency domain position occupied by the random access channel allocation unit of level j Quantity.
  • the sending, by the second node, the random access signaling to the first node includes: the second node from the selected starting location, consecutive R j of the random access channel allocating units Sending, by the first node, the random access signaling, where the starting location is that the second node selects one of the set of access Sjs to send the random access channel allocation unit as the second node.
  • the starting position of the time-frequency resource occupied by the random access signaling is
  • the starting subframe occupied by the random access signaling sent by the second node is determined by at least one of the following: a level j of the second node; and a random access signaling of level j is occupied by the random access signaling
  • the random access subframe number R j wherein the random access subframe refers to a subframe configured with a random access channel allocation unit.
  • N j -1 is the first available random access subframe index within a predefined time window
  • N j -1 is the last available random access within a predefined time window Subframe index.
  • the sending, by the second node, the random access signaling to the first node includes: the second node from the consecutive R j consecutive random access subframes starting from the selected starting subframe
  • the first node sends the random access signaling, where the second node selects one random access subframe from the set Sj as the random access signaling used by the second node.
  • the starting subframe is the first node from the consecutive R j consecutive random access subframes starting from the selected starting subframe.
  • the number of frequency domain locations occupied by the random access channel allocation unit of the level j is F, and the indexes are 0, 1, ..., F-1; wherein the F random access channel allocation units are in the system
  • the distribution within the bandwidth is such that the random access channel allocation unit of the even index number is distributed on one side of the system bandwidth, and the random access channel allocation unit of the odd index number is distributed on the other side of the system bandwidth.
  • the manner in which the F random access channel allocation units are distributed within the system bandwidth includes at least one of the following: the random access signaling sent by the second node is sent by using a frequency hopping method, and F When it is an odd number greater than 1, at least one of the random access channel allocation units in the random access channel allocation unit occupied by the frequency hopping mode is distributed on both sides of the system bandwidth; the random number sent in the second node When the access signaling is sent in a frequency hopping manner, and F is an odd number greater than 1, the index number of at least one of the random access channel allocation units in the random access channel allocation unit occupied by the frequency hopping mode transmission is an odd number; The index number of at least one of the random access channel allocation units in the random access channel allocation unit of the frequency hopping mode transmission is an even number; the random access signaling sent by the second node is sent by using a frequency hopping method, And when F is an odd number greater than 1, the number of frequency domain positions occupied by the random access channel allocation unit occupied by the frequency hopping mode transmission is greater
  • the level refers to at least one of the following: an coverage enhancement level, a random access channel PRACH coverage enhancement level, and a random access channel PRACH channel repeated transmission level.
  • the first node includes at least one of: a macro base station, a micro base station, a pico base station, a femto base station, a low power node, and a relay station; and the second node includes at least one of: one or more people Human H2H communication terminal, one or more machine to machine M2M communication terminals, one or more devices to device D2D communication terminals.
  • a processing device for random access which is applied to a first node side, and includes: a first receiving module, configured to receive random access signaling sent by a second node; A sending module is configured to send random access response information in response to the random access signaling to the second node by using a downlink channel, where the random access response information is sent in a random access response message.
  • a processing apparatus for random access which is applied to a second node side, and includes: a second sending module, configured to send random access signaling to the first node; and a second receiving module And receiving, by using a downlink channel, random access response information that is sent by the first node in response to the random access signaling, where the random access response information is sent in a random access response message.
  • the first node receives the random access signaling sent by the second node, and the first node sends the random access response information in response to the random access signaling to the second node by using the downlink channel, where The manner in which the random access response information is sent in the random access response message fills the blank of the enhanced random access response message scheme in the related art.
  • FIG. 1 is a flowchart 1 of a method for processing random access according to an embodiment of the present invention
  • FIG. 2 is a second flowchart of a method for processing random access according to an embodiment of the present invention
  • FIG. 3 is a structural block diagram 1 of a processing apparatus for random access according to an embodiment of the present invention
  • FIG. 4 is a structural block diagram 2 of a processing apparatus for random access according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a DCI format 2 according to an alternative embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a random access channel allocation unit in accordance with an alternate embodiment of the present invention.
  • FIG. 1 is a flowchart 1 of a method for processing random access according to an embodiment of the present invention. As shown in FIG. 1 , the process includes the following steps:
  • Step S102 The first node receives the random access signaling sent by the second node.
  • Step S104 The first node sends a random access response in response to the random access signaling to the second node through the downlink channel.
  • Information wherein the random access response information is sent in a random access response message.
  • the first node receives the random access signaling sent by the second node, and the first node sends the random access in response to the random access signaling to the second node by using the downlink channel.
  • the response information wherein the random access response information is sent in the random access response message, fills in the blank of the enhanced random access response message scheme in the related art.
  • the downlink channel involved in this embodiment includes: a downlink control channel and a downlink traffic channel, where the downlink control channel includes at least one of the following: a physical downlink control channel PDCCH, an enhanced physical downlink control channel EPDCCH, and a downlink traffic channel includes: Physical downlink shared channel PDSCH.
  • the downlink control channel includes at least one of the following: a physical downlink control channel PDCCH, an enhanced physical downlink control channel EPDCCH, and a downlink traffic channel includes: Physical downlink shared channel PDSCH.
  • step S104 may be implemented in that the first node sends the first downlink control information DCI and/or the second downlink control information DCI to the second node by using the downlink channel, where the first DCI is used. Carrying the first number of random access response information, the second DCI carrying the scheduling information of the second number of random access response information, the first quantity and the second quantity are both smaller than the predetermined quantity, and it should be noted that The preferred number of the first number in the embodiment is 1.
  • the first DCI and the second DCI are carried in the downlink control channel, and the number of bits supported by the first DCI and the second DCI is different.
  • the method in this embodiment further includes: temporarily identifying the RA-RNTI by using the random access wireless network.
  • the first DCI and/or the second DCI cyclic redundancy check code CRC is scrambled. It should be noted that, in this embodiment, the values of the RA-RNTI used by the first DCI are different for different random access sequence indexes.
  • the scheduling information carried by the second DCI involved in this embodiment includes at least one of: time domain resource allocation information of a downlink traffic channel carrying a second quantity of random access response information; and carrying a second number of random accesses The frequency domain resource allocation information of the downlink traffic channel of the response information; the repeated transmission times information of the downlink traffic channel carrying the second number of random access response information.
  • step S104 may be implemented in the following manner: the first node sends the first downlink control information DCI and the second downlink control information DCI to the second node by using the downlink channel, where the first DCI carries The third number of random access response information, where the second DCI carries the scheduling information of the fourth number of random access response information, where the third quantity and the fourth quantity are both smaller than the predetermined quantity.
  • first DCI and the second DCI are carried in the downlink control channel, and the number of bits supported by the first DCI and the second DCI is the same.
  • first DCI and the second DCI carry indication information for indicating a DCI category.
  • the second DCI has partial information in the fourth number of random access response information.
  • the method in this embodiment further includes: temporarily identifying the RA by using a random access wireless network.
  • -RNTI The first DCI and the second DCI cyclic redundancy check code CRC are scrambled.
  • the RA-RNTI values used by the first DCI and the second DCI are different, and the RA-RNTI values used by the first DCI are different for different random access sequence indexes.
  • the first node may send the scheduling information of the first downlink control information DCI and/or the second downlink control information DCI to the second node by using the downlink channel, where the first downlink control information carries the first A level of random access response information, where the second downlink control information carries scheduling information of the second level of random access response information.
  • the first level includes at least one of: a maximum level of a default configuration, a maximum level configured by the first node, a determined level configured by the first node, and a second level including at least one of the following: a lowest level of the default configuration, except the default Other levels other than the highest level, the lowest level configured by the first node, and the other levels other than the highest level among the levels configured by the first node are configured.
  • the starting position of the time-frequency resource occupied by the random access signaling sent by the second node involved in this embodiment may be determined by at least one of the following: level j of the second node; random access of level j when occupied by the random access signaling channel allocating unit number R j; node selected random access channel allocation unit in the frequency domain occupy a position index f.
  • the time-frequency resource occupied by the random access signaling sent by the second node is one or more random access channel allocation units.
  • the size of the random access channel allocation unit is configured by the first node or by the standard default configuration, and the first node configuration or the standard default configuration is described by two dimensions: time domain and frequency, where random access
  • the channel allocation unit occupies 1 subframe in the time domain and occupies 6 physical resource blocks PRB in the frequency domain.
  • Random access channel allocation unit Composition 0 is the first available random access channel allocation unit index in the frequency position index f in a predefined time window; To allocate a unit index for the last available random access channel on the frequency position index f in a predefined time window; 0 ⁇ f ⁇ F-1, where F is the frequency domain position occupied by the random access channel allocation unit of level j Quantity.
  • the mod(n, p) operation that is, the remainder operation, is an operation of dividing the integer n by the remainder of another integer p in the integer operation, and does not consider the quotient of the operation.
  • the manner in which the first node receives the random access signaling sent by the second node is implemented by: the first node receiving the second node from the selected starting location.
  • the first consecutive R j random access channel allocation units send random access signaling, wherein the starting position is that the second node selects one random access channel allocation unit from the set Sj as the random access sent by the second node.
  • the starting subframe occupied by the random access signaling sent by the second node is determined by at least one of the following: a level j of the second node; and a random access signaling of the level j is occupied by the random access signaling
  • the random access subframe number R j where the random access subframe refers to a subframe configured with a random access channel allocation unit.
  • the manner in which the first node in the embodiment receives the random access signaling sent by the second node may be implemented in the following manner: the first node receives the second node from the selected start.
  • the random access signaling is sent on consecutive R j random access subframes starting from the subframe, where the second node selects one random access subframe from the set Sj as the random access signaling sent by the second node. Start subframe.
  • the number of frequency domain positions occupied by the random access channel allocation unit of level j is F, and the indexes are 0, 1, ..., F-1; wherein, F random access channel allocation units are within the system bandwidth.
  • the distribution mode is that the random access channel allocation unit of the even index number is distributed on one side of the system bandwidth, and the random access channel allocation unit of the odd index number is distributed on the other side of the system bandwidth.
  • the random access signaling sent by the second node is sent in a frequency hopping manner, and F is an odd number greater than one: at least one random access channel allocation in each of the random access channel allocation units occupied by the hopping mode transmission
  • the unit is distributed on both sides of the system bandwidth; the index number of at least one random access channel allocation unit in the random access channel allocation unit occupied by the frequency hopping mode is an odd number; the frequency hopping mode transmits the occupied random access channel allocation unit
  • the index number of at least one random access channel allocation unit is an even number; the number of frequency domain positions occupied by the random access channel allocation unit occupied by the frequency hopping mode is greater than 2; wherein, the L random access channel allocation units
  • the index is mod(f, F), mod(f+1, F), ..., mod(f+L-1, F); where f is the time-frequency resource occupied by the random access signaling sent by the second node
  • the starting position corresponds to the index of the random access channel allocation unit.
  • the level referred to in this embodiment refers to at least one of the following: coverage enhancement level, random access channel PRACH coverage enhancement level, and random access channel PRACH channel repetition transmission level.
  • the first node includes at least one of the following: a macro base station, a micro base station, a pico base station, a femto base station, a low power node, and a relay station; and the second node includes at least one of: one or more person-to-person H2H communications Terminal, one or more machine to machine M2M communication terminals, one or more devices to device D2D communication terminals.
  • FIG. 2 is a second flowchart of a method for processing random access according to an embodiment of the present invention. As shown in FIG. 2, the steps of the method include:
  • Step S202 The second node sends random access signaling to the first node.
  • Step S204 The second node receives, by using the downlink channel, random access response information that is sent by the first node in response to the random access signaling, where the random access response information is sent in the random access response message.
  • the downlink channel in this embodiment may be: a downlink control channel and a downlink traffic channel; wherein the downlink control channel includes at least one of: a physical downlink control channel PDCCH, an enhanced physical downlink control channel EPDCCH, and a downlink traffic channel including: a physical downlink Shared channel PDSCH.
  • the downlink control channel includes at least one of: a physical downlink control channel PDCCH, an enhanced physical downlink control channel EPDCCH, and a downlink traffic channel including: a physical downlink Shared channel PDSCH.
  • Manner 1 The second node receives, by using the downlink channel, scheduling information of the first downlink control information DCI and/or the second downlink control information DCI sent by the first node, where the first DCI carries the first number of random accesses.
  • the second DCI carries a second quantity of random access response information, and the first quantity and the second quantity are both smaller than the predetermined quantity.
  • the first DCI and the second DCI are carried in the downlink control channel, and the number of bits supported by the first DCI and the second DCI is different.
  • the optional implementation manner in this embodiment further includes: The incoming radio network temporary identity RA-RNTI scrambles the first DCI and/or the second DCI cyclic redundancy check code CRC.
  • the RA-RNTI values used by the first DCI are different for different random access sequence indexes.
  • the scheduling information carried by the second DCI includes at least one of the following: a time domain resource allocation information of a downlink traffic channel carrying a second quantity of random access response information, and a downlink traffic channel carrying a second quantity of random access response information. Frequency domain resource allocation information; information of repeated transmission times of a downlink traffic channel carrying a second number of random access response information.
  • the second node receives the first downlink control information DCI and the second downlink control information DCI sent by the first node by using the downlink channel, where the first DCI carries the scheduling information of the third number of random access response information.
  • the second DCI carries a fourth number of random access response information, and the third quantity and the fourth quantity are both smaller than the predetermined number.
  • first DCI and/or the second DCI are carried in the downlink control channel, and the first DCI and the second DCI support the same number of bits, and the first DCI and the second DCI carry an indication for indicating the DCI category. information.
  • the second DCI carries part of the information in the fourth number of random access response information.
  • the method in this embodiment may further include: temporarily accessing the wireless network through random access
  • the identification RA-RNTI scrambles the first DCI and the second DCI cyclic redundancy check code CRC.
  • the RA-RNTI values used by the first DCI and the second DCI are different, and the RA-RNTI values used by the first DCI are different for different random access sequence indexes.
  • the manner in which the second node in the first mode and the second mode receives the first downlink control information DCI and the second downlink control information DCI sent by the first node by using the downlink channel may be implemented as follows: the second node passes the downlink channel Receiving, by the first node, scheduling information of the first downlink control information DCI and/or the second downlink control information DCI, where the first downlink control information carries the first level of random access response information, and the second downlink The control information carries scheduling information of the second level of random access response information.
  • the first level involved in this embodiment includes at least one of the following: a maximum level of a default configuration, a maximum level configured by the first node, and a determined level configured by the first node; and the second level includes at least one of the following: The lowest level of the default configuration, the other level except the default configuration highest level, the lowest level configured by the first node, by the first node The level of the configured level other than the highest level.
  • the start position of the time-frequency resource occupied by the random access signaling sent by the second node is determined by at least one of the following: a level j of the second node; The number of random access channel allocation units occupied by the random access signaling when transmitting Rj ; the frequency domain location index f occupied by the random access channel allocation unit selected by the second node.
  • the time-frequency resource occupied by the random access signaling sent by the second node is one or more random access channel allocation units.
  • the size of the random access channel allocation unit in this embodiment is configured by the first node or by the standard default configuration, and the first node configuration or the standard default configuration is described by two dimensions: time domain and frequency, wherein the random connection
  • the inbound channel allocation unit occupies 1 subframe in the time domain and occupies 6 physical resource blocks PRB in the frequency domain.
  • Random access channel allocation unit Composition among them, 0 is the first available random access channel allocation unit index in the frequency position index f in a predefined time window; To allocate a unit index for the last available random access channel on the frequency position index f in a predefined time window; 0 ⁇ f ⁇ F-1, where F is the frequency domain position occupied by the random access channel allocation unit of level j Quantity.
  • the manner in which the second node sends the random access signaling to the first node in this embodiment may be implemented as follows: the second node starts from the selected Sending random access signaling to the first node on the consecutive R j random access channel allocating units starting from the location, where the starting location is the second node selecting a random access channel allocation unit from the set Sj as the second node The starting position of the time-frequency resource occupied by the transmitted random access signaling.
  • the starting subframe occupied by the random access signaling sent by the second node is determined by at least one of the following: a level j of the second node; a random access subframe occupied by the random access signaling of the level j
  • the number of frames R j where the random access subframe refers to a subframe in which a random access channel allocation unit is configured.
  • the manner in which the second node sends the random access signaling to the first node may be implemented as follows: the second node selects consecutive R j random starts from the selected starting subframe. A random access signaling is sent to the first node on the access subframe, where the second node selects a random access subframe from the set Sj as the starting subframe occupied by the random access signaling sent by the second node.
  • the number of frequency domain positions occupied by the random access channel allocation unit of level j is F, and the indexes are 0, 1, ..., F-1; wherein, the distribution of F random access channel allocation units in the system bandwidth
  • the method is that: the random access channel allocation unit of the even index number is distributed on one side of the system bandwidth, and the random access channel allocation unit of the odd index number is distributed on the other side of the system bandwidth.
  • the manner in which the F random access channel allocation units are distributed within the system bandwidth includes at least one of the following: the random access signaling sent by the second node is sent by using a frequency hopping method, and F is an odd number greater than 1. At least one random access channel allocation unit in the random access channel allocation unit of the frequency hopping mode is distributed on both sides of the system bandwidth; the random access signaling sent by the second node is sent by frequency hopping.
  • the frequency hopping mode transmits the occupied random access channel allocation unit
  • the index number of at least one random access channel allocation unit is even; the random access signaling sent by the second node is sent in a frequency hopping manner, and when F is an odd number greater than 1, the frequency hopping mode transmits the occupied random number.
  • the number of frequency domain positions occupied by the access channel allocation unit is greater than 2; wherein the indexes of the L random access channel allocation units are f, f+1, ..., f+L-1; wherein f is the second node Index random access signaling frequency resources occupied by the random access channel allocation unit corresponding to the start position.
  • the level refers to at least one of: coverage enhancement level, random access channel PRACH coverage enhancement level, random access channel PRACH channel repetition transmission level.
  • the first node includes at least one of the following: a macro base station, a micro base station, a pico base station, a femto base station, a low power node, and a relay station; and the second node includes at least one of: one or more persons To a human H2H communication terminal, one or more machine to machine M2M communication terminals, one or more devices to a device D2D communication terminal.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods of various embodiments of the present invention.
  • a processing device for random access is also provided in this embodiment, and the device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 3 is a block diagram of a structure of a random access processing apparatus according to an embodiment of the present invention.
  • the apparatus is applied to a first node side, and the apparatus includes: a first receiving module 32 configured to receive a random access sent by a second node.
  • the first sending module 34 is coupled to the first receiving module 32 and configured to send random access response information in response to the random access signaling to the second node through the downlink channel, where the random access response information is Sent in the random access response message.
  • FIG. 4 is a structural block diagram 2 of a processing apparatus for random access according to an embodiment of the present invention.
  • the apparatus is applied to a second node side, and the apparatus includes: a second sending module 42 configured to send a random access message to the first node. a second receiving module 44,
  • the second sending module 42 is coupled to the second sending module 42 and configured to receive, by using a downlink channel, random access response information that is sent by the first node in response to the random access signaling, where the random access response information is sent in the random access response message.
  • MTC UEs there are MTC UEs in the LTE system, and the MTC UEs can support Coverage Enhancement (CE).
  • PRACH supports a total of three Coverage Enhancement Levels (CELs), namely CEL0, CEL1 and CEL2. The higher the CEL level, the larger the coverage enhancement target value.
  • UE1, UE2, and UE3 are all MTC UEs of CEL0.
  • the base station eNB allocates the PRACH resources to the eNB, and includes: a random access sequence Preamble used for transmitting the random access signaling, a subframe Subframe used by the Preamble, and a physical resource block PRB.
  • the random access response information sent by the eNB needs to be received.
  • the random access response information of the UE1 is sent in the DCI and is sent by using the DCI format 1; the scheduling information of the random access response information of the UE2 and the UE3 is sent in the DCI, and is sent in the DCI format 2, and is in the optional embodiment.
  • the size of DCI format 1 and DCI format 2 are different; for example, DCI format 1 is larger than DCI format 2, and DCI format 1 may be smaller than DCI format 2, and DCI format 1 and DCI format may be determined according to different application scenarios. 2 size relationship between.
  • DCI format 1 and DCI format 2 are scrambled by Random Access Radio Network Temporary Identity (RA-RNTI); DCI format 1 and DCI format 2 are both The bearer is sent on an Enhanced Physical Downlink Control Channel (EPDCCH);
  • RA-RNTI Random Access Radio Network Temporary Identity
  • EPDCCH Enhanced Physical Downlink Control Channel
  • UE1 to UE3 blindly detect the EPDCCH transmitted by the eNB according to the DCI format 1 and the DCI format 2, and when the UE1 successfully detects the EPDCCH1 sent by the eNB according to the DCI format 1, the decoder obtains the random access sent by the eNB to the DCI in the format 1.
  • Response information when the UE2 and the UE3 successfully detect the EPDCCH2 sent by the eNB according to the DCI format 2, the scheduling information of the random access response information sent by the eNB is decoded in the DCI of the format 2, and further, the physical downlink indicated by the scheduling information is further decoded.
  • a shared channel Physical Downlink shared channel, PDSCH for short
  • PDSCH Physical Downlink shared channel
  • the MTC UEs can support Coverage Enhancement (CE).
  • CE Coverage Enhancement
  • the PRACH supports a total of three coverage enhancement levels CEL, namely CEL0, CEL1 and CEL2, wherein the CEL level The higher the corresponding coverage enhancement target value is.
  • UE1 is an MTC UE of CEL0.
  • the base station (eNB) allocates PRACH resources for it, including a random access sequence Preamble used for transmitting random access signaling, and a subframe subframe and a physical resource block PRB used for transmitting the Preamble.
  • the UE1 After transmitting the Preamble on the PRACH according to the configuration information of the eNB, the UE1 needs to receive the random access response information sent by the eNB.
  • the random access response information of the UE1 may be sent in the downlink control information DCI, or may be sent in a physical downlink shared channel (Physical Downlink shared channel, PDSCH for short), and the scheduling information is sent in the DCI (bearing in the EPDCCH).
  • DCI Downlink control information
  • PDSCH Physical Downlink shared channel
  • the UE1 needs to first decode the DCI that is scrambled by the random access radio network temporary identifier RA-RNTI, and distinguish the random access response information or the random access response information sent in the DCI according to the first indication information in the DCI. Scheduling information; in this alternative embodiment, if the DCI indicated by the first indication information is sent by the random access response information, the UE1 further determines whether the random access response information is sent to itself. If yes, the detection of the random access response information is completed; otherwise, the other DCI is further blindly detected;
  • the MTC UEs can support Coverage Enhancement (CE).
  • CE Coverage Enhancement
  • the PRACH supports a total of three coverage enhancement levels CEL, namely CEL0, CEL1 and CEL2, wherein the CEL level The higher the corresponding coverage enhancement target value is.
  • UE1 is an MTC UE of CEL0.
  • the base station (eNB) allocates PRACH resources for it, including a random access sequence Preamble used for transmitting random access signaling, and a subframe subframe and a physical resource block PRB used for transmitting the Preamble.
  • the UE1 After transmitting the Preamble on the PRACH according to the configuration information of the eNB, the UE1 needs to receive the random access response information sent by the eNB.
  • the random access response information of the UE1 may be sent in the downlink control information DCI, or may be sent in a physical downlink shared channel (Physical Downlink shared channel, PDSCH for short), and the scheduling information is sent in the DCI (bearing in the EPDCCH).
  • DCI Downlink control information
  • PDSCH Physical Downlink shared channel
  • UE1 needs to first decode the DCI that is scrambled by the random access radio network temporary identifier RA-RNTI, and the DCI carrying the random access response information is different from the RA-RNTI used by the DCI carrying the scheduling information of the random access response information; UE1 is based on The RA-RNTI distinguishes the random access response information or the scheduling information of the random access response information sent in the DCI. In this alternative embodiment, it is assumed that the DCI indicated by the first indication information is the random access response information. Then, UE1 further determines whether the random access response information is sent to itself. If yes, the detection of the random access response information is completed; otherwise, the other DCI is further blindly detected;
  • the MTC UEs can support Coverage Enhancement (CE).
  • CE Coverage Enhancement
  • the PRACH supports a total of three coverage enhancement levels CEL, namely CEL0, CEL1 and CEL2, wherein the CEL level The higher the corresponding coverage enhancement target value is.
  • UE1 is an MTC UE of CEL0.
  • the base station (eNB) allocates PRACH resources for it, including a random access sequence Preamble used for transmitting random access signaling, and a subframe subframe and a physical resource block PRB used for transmitting the Preamble.
  • the UE1 After transmitting the Preamble on the PRACH according to the configuration information of the eNB, the UE1 needs to receive the random access response information sent by the eNB.
  • the random access response information of UE1 is sent in the downlink control information DCI, and the random access radio network temporary identifier RA-RNTI used for DCI scrambling has different values for different Preamble indexes;
  • the UE1 first selects a corresponding RA-RNTI according to the transmitted Preamble index, and attempts to decode the DCI by using the RA-RNTI. If the decoding can be successfully performed, the DCI is sent by the eNB to the UE. Otherwise, the UE1 further blindly detects other DCIs.
  • the MTC UEs can support the coverage enhanced CE.
  • the PRACH supports a total of three coverage enhancement levels CEL, namely CEL0, CEL1 and CEL2, wherein the higher the CEL level, the corresponding coverage. The greater the target value is.
  • UE1, UE2, and UE3 are all MTC UEs of CEL0.
  • the base station (eNB) allocates PRACH resources for it, including a random access sequence Preamble used for transmitting random access signaling, and a subframe subframe and a physical resource block PRB used for transmitting the Preamble.
  • the UE1 to the UE3 need to receive the random access response information sent by the eNB.
  • the random access response information of UE1 is sent in DCI and transmitted in DCI format 1.
  • the scheduling information of random access response information of UE2 and UE3 is sent in DCI and transmitted in DCI format 2.
  • DCI format 1 and DCI format 2 have the same size.
  • FIG. 5 is a schematic structural diagram of the DCI format 2 according to an alternative embodiment of the present invention, as shown in FIG. .
  • Both DCI format 1 and DCI format 2 are scrambled by a random access radio network temporary identifier RA-RNTI;
  • Both the DCI format 1 and the DCI format 2 are transmitted on an Enhanced Physical Downlink Control Channel (EPDCCH).
  • EPDCCH Enhanced Physical Downlink Control Channel
  • UE1 to UE3 blindly detect the EPDCCH sent by the eNB.
  • UE1 successfully detects the EPDCCH1 sent by the eNB according to the DCI format 1, and then decodes the random access response information sent by the eNB to the eNB in the DCI.
  • the UE2 and the UE3 succeed according to the DCI format 2.
  • the EPDCCH 2 sent by the eNB is blindly detected, and the scheduling information and the random access response information of the random access response information sent by the eNB are decoded in the DCI: Part1, and then the physical downlink shared channel indicated by the scheduling information (Physical Downlink) The shared channel (referred to as PDSCH), and the random access response information is decoded in the PDSCH: Part2, and finally, the random access response information is obtained according to the random access response information: Part1 and the random access response information: Part2.
  • the MTC UEs can support Coverage Enhancement (CE).
  • CE Coverage Enhancement
  • the PRACH supports a total of three coverage enhancement levels (Coverage Enhancement level, Referred to as CEL), namely CEL0, CEL1 and CEL2.
  • CEL coverage Enhancement level
  • UE1 is an MTC UE of CEL0
  • UE2 is an MTC UE of CEL1
  • UE3 is an MTC UE of CEL2.
  • the base station (eNB) allocates PRACH resources for it, including a random access sequence (Preamble) used for transmitting random access signaling, and a subframe (Subframe) and a physical resource block (PRB) used for transmitting the Preamble.
  • Preamble random access sequence
  • Subframe subframe
  • PRB physical resource block
  • the UE1 to the UE3 need to receive the random access response information sent by the eNB.
  • the random access response information of the default configuration maximum CEL (CEL2) is sent in the DCI, and only one terminal's random access response information is sent in one DCI.
  • the scheduling information of the random access response information of CEL0 and CEL1 is sent in the DCI.
  • the DCI bearer is sent on an Enhanced Physical Downlink Control Channel (EPDCCH).
  • EPDCCH Enhanced Physical Downlink Control Channel
  • UE1 and UE2 blindly detect the EPDCCH sent by the eNB, and decode the scheduling information of the random access response information;
  • UE3 blindly detects the EPDCCH sent by the eNB, and decodes the random access response information;
  • PRACH supports a total of three coverage enhancement levels CEL, namely CEL0, CEL1 and CEL2. The higher the CEL level, the larger the coverage enhancement target value is.
  • the UE1 is the MTC UE of the CEL0, and the base station eNB allocates the PRACH resource, including the random access sequence Preamble used for sending the random access signaling. And transmitting the subframe Subframe used by the Preamble and the physical resource block PRB, and the UE1 selects the resource sent by the Preamble according to the following rules:
  • the time-frequency resource occupied by the random access signaling sent by the UE1 is one or more of the random access channel allocating units; the random access channel allocating unit occupies 1 subframe in the time domain, 6 consecutive PRBs in the frequency domain
  • the random access channel allocation unit ( a set of start positions Sj of time-frequency resources occupied by random access signaling constituting CEL j; wherein 0 is the first available random access channel allocation unit index starting from Frame 0 at the frequency position index f; Assigning a unit index to the last available random access channel indexed from Frame 0 to Frame 1023 with a frequency position index of f; 0 ⁇ f ⁇ F-1, F is the frequency domain occupied by the random access channel allocation unit of level j Number of locations; the number of random access channel allocation units occupied by random access signaling of level j ; R j ;
  • the UE1 selects one of the random access channel allocation units from the set S0 of the CEL 0 as the starting position of the time-frequency resource occupied by the transmitted random access signaling according to the foregoing rule; Transmitting a Preamble on the consecutive R j random access channel allocating units starting from the starting position;
  • the UE1 After the UE1 sends the Preamble on the PRACH according to the configuration information of the eNB, the UE1 needs to receive the random transmission sent by the eNB. Access response information.
  • the random access response information of the UE1 may be sent in the DCI, or may be sent in a Physical Downlink Shared Channel (PDSCH), and the scheduling information is sent in the DCI (bearing in the EPDCCH).
  • PDSCH Physical Downlink Shared Channel
  • the UE1 needs to first decode the DCI that is scrambled by the Random Access Radio Network Temporary Identity (RA-RNTI), and distinguish the sent in the DCI according to the first indication information in the DCI.
  • the random access response information is the scheduling information of the random access response information. If the random access response information is sent in the DCI indicated by the first indication information, the UE1 further determines the random access response. Whether the information is sent to yourself. If yes, the detection of the random access response information is completed; otherwise, the other DCI is further blindly detected;
  • UE1 may also select resources to be sent by Preamble according to the following rules:
  • the time-frequency resource occupied by the random access signaling sent by the UE1 is one or more of the random access channel allocating units; the random access channel allocating unit occupies 1 subframe in the time domain, 6 consecutive PRBs in the frequency domain
  • the UE1 selects one of the random access subframes from the set S0 of the CEL 0 as the starting subframe occupied by the transmitted random access signaling according to the foregoing rule; and the starting from the selected Sending a Preamble on consecutive R j random access subframes starting from a subframe;
  • PRACH supports a total of three coverage enhancement levels CEL, namely CEL0, CEL1 and CEL2. The higher the CEL level is, the larger the coverage enhancement target value is.
  • the UE1 is the MTC UE of the CEL0, and the base station eNB allocates the PRACH resource, including the random access sequence Preamble used for sending the random access signaling. And transmitting the subframe Subframe used by the Preamble and the physical resource block PRB, and the UE1 selects the resource sent by the Preamble according to the following rules:
  • the time-frequency resource occupied by the random access signaling sent by the UE1 is one or more of the random access channel allocating units; the random access channel allocating unit occupies 1 subframe in the time domain, 6 consecutive PRBs in the frequency domain
  • the random access channel allocation unit ( a set of start positions of the time-frequency resources occupied by the random access signals constituting the CEL j; wherein 0 is the first available random access channel allocation unit index starting from Frame 0 at the frequency position index f; Assigning a unit index to the last available random access channel indexed from Frame 0 to Frame 1023 with a frequency position index of f; 0 ⁇ f ⁇ F-1, F is the frequency domain occupied by the random access channel allocation unit of level j Number of locations; the number of random access channel allocation units occupied by random access signaling of level j ; R j ;
  • UE1 selects one of the random access channel allocation units from the set S0 of CEL 0 as the starting position of the time-frequency resource occupied by the transmitted random access signaling according to the above rule; and starts from the selected starting position Transmitting a Preamble on consecutive R j random access channel allocation units;
  • FIG. 6 A schematic diagram of a random access channel allocation unit, as shown in FIG.
  • the distribution of F random access channel allocation units within the system bandwidth is that the random access channel allocation units of even index numbers are distributed on one side of the system bandwidth, and the random access channel allocation units of odd index numbers are distributed in the system. The other side of the bandwidth;
  • At least one of the random access channel allocation units in the random access channel allocation unit occupied by the frequency hopping mode is distributed on both sides of the system bandwidth;
  • the index number of at least one of the random access channel allocation units in the random access channel allocation unit occupied by the frequency hopping mode is an odd number; at least one of the random access channel allocation units occupied by the frequency hopping mode transmission The index number of the random access channel allocation unit is an even number;
  • the number of frequency domain positions occupied by the random access channel allocation unit occupied by the frequency hopping mode is greater than 2;
  • the indexes of the L random access channel allocation units are mod(f, F), mod(f+1, F), ..., mod(f+L-1, F); wherein f is An index of a random access channel allocation unit corresponding to a start position of a time-frequency resource occupied by the random access signaling sent by the UE1;
  • the index of the random access channel allocation unit on the first consecutive T(0) random access subframes starting from the random access subframe where the random access channel allocation unit starts from the UE 1 is mod (f) , F) sending the Preamble, the next T (1) consecutive random access subframes, the index of the random access channel allocation unit is mod (f+1, F), the next T (2)
  • the index of the random access channel allocation unit on the continuous random access subframe is mod (f+2, F), and so on, and the next T (L-1) consecutive random access subframes are random.
  • the index of the access channel allocation unit is mod (f+L-1, F) to send the Preamble;
  • the connection is The T(L) consecutive random access subframes are sent from the new random access channel allocation unit with an index of mod(f, F), and so on, until UE1 completes the random access signaling transmission;
  • the UE1 After transmitting the Preamble on the PRACH according to the configuration information of the eNB, the UE1 needs to receive the random access response information sent by the eNB.
  • the random access response information of the UE1 may be sent in the DCI, or may be sent in a Physical Downlink Shared Channel (PDSCH), and the scheduling information is sent in the DCI (bearing in the EPDCCH).
  • PDSCH Physical Downlink Shared Channel
  • the UE1 needs to first decode the DCI that is scrambled by the Random Access Radio Network Temporary Identity (RA-RNTI), and distinguish the sent in the DCI according to the first indication information in the DCI.
  • the random access response information is the scheduling information of the random access response information. If the random access response information is sent in the DCI indicated by the first indication information, the UE1 further determines the random access response. Whether the information is sent to yourself. If yes, the detection of the random access response information is completed; otherwise, the other DCI is further blindly detected;
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • Step S1 The first node receives the random access signaling sent by the second node.
  • Step S2 The first node sends random access response information in response to the random access signaling to the second node by using the downlink channel, where the random access response information is sent in the random access response message.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the technical solution provided by the embodiment of the present invention is applied to a process of random access, in which a first node receives random access signaling sent by a second node, and the first node sends a response to the second node by using a downlink channel.
  • the random access response information of the random access signaling wherein the random access response information is sent in the random access response message, fills in the blank of the enhanced random access response message scheme in the related art.

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Abstract

La présente invention concerne un procédé et un dispositif de traitement d'accès aléatoire, ledit procédé comprenant les opérations suivantes : un premier nœud reçoit un signal d'accès aléatoire envoyé par un second nœud ; au moyen d'un canal de liaison descendante, le premier nœud envoie au second nœud des informations de réponse d'accès aléatoire pour répondre au signal d'accès aléatoire, les informations de réponse d'accès aléatoire étant envoyées dans un message de réponse d'accès aléatoire. La présente invention comble les écarts dans l'état de la technique associé concernant l'amélioration de solutions de message de réponse d'accès aléatoire.
PCT/CN2015/098309 2015-08-14 2015-12-22 Procédé et dispositif de traitement d'accès aléatoire WO2016165388A1 (fr)

Applications Claiming Priority (2)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020228609A1 (fr) * 2019-05-12 2020-11-19 华为技术有限公司 Procédé de transmission de signal, dispositif terminal et dispositif de réseau

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020029310A1 (fr) * 2018-08-09 2020-02-13 Oppo广东移动通信有限公司 Procédé et dispositif de transmission de données, et terminal
CN108631905B (zh) * 2017-03-15 2021-06-15 华为技术有限公司 数据发送方法、装置、终端设备和网络设备
WO2018195823A1 (fr) * 2017-04-26 2018-11-01 华为技术有限公司 Système, dispositif et procédé de transmission de données
CN108811164B (zh) * 2017-05-04 2019-11-19 维沃移动通信有限公司 一种随机接入的处理方法、用户终端及网络侧设备
CN117062242A (zh) * 2022-05-05 2023-11-14 中兴通讯股份有限公司 随机接入方法、装置、存储介质及电子装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012052911A1 (fr) * 2010-10-22 2012-04-26 Nokia Corporation Procédé et appareil de réception coopérative pour fonctionnement dispositif à dispositif géré par réseau
CN103220811A (zh) * 2012-01-19 2013-07-24 中兴通讯股份有限公司 信息处理方法、mtc ue随机接入lte系统的方法
CN104144517A (zh) * 2013-05-10 2014-11-12 中兴通讯股份有限公司 一种随机接入方法及系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012052911A1 (fr) * 2010-10-22 2012-04-26 Nokia Corporation Procédé et appareil de réception coopérative pour fonctionnement dispositif à dispositif géré par réseau
CN103220811A (zh) * 2012-01-19 2013-07-24 中兴通讯股份有限公司 信息处理方法、mtc ue随机接入lte系统的方法
CN104144517A (zh) * 2013-05-10 2014-11-12 中兴通讯股份有限公司 一种随机接入方法及系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020228609A1 (fr) * 2019-05-12 2020-11-19 华为技术有限公司 Procédé de transmission de signal, dispositif terminal et dispositif de réseau

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