WO2014206311A1 - 物理随机接入信道的发送和接收方法以及基站和用户设备 - Google Patents

物理随机接入信道的发送和接收方法以及基站和用户设备 Download PDF

Info

Publication number
WO2014206311A1
WO2014206311A1 PCT/CN2014/080826 CN2014080826W WO2014206311A1 WO 2014206311 A1 WO2014206311 A1 WO 2014206311A1 CN 2014080826 W CN2014080826 W CN 2014080826W WO 2014206311 A1 WO2014206311 A1 WO 2014206311A1
Authority
WO
WIPO (PCT)
Prior art keywords
user equipment
prach
coverage enhancement
random access
enhancement level
Prior art date
Application number
PCT/CN2014/080826
Other languages
English (en)
French (fr)
Inventor
王丰
刘仁茂
Original Assignee
夏普株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 夏普株式会社 filed Critical 夏普株式会社
Priority to JP2016522225A priority Critical patent/JP2016526836A/ja
Priority to US14/901,190 priority patent/US10182457B2/en
Publication of WO2014206311A1 publication Critical patent/WO2014206311A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0212Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0212Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0219Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0225Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18Negotiating wireless communication parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of wireless communication technologies. More specifically, the present invention relates to a method of transmitting/receiving a physical random access channel (PRACH) of a serving cell and a base station/user equipment.
  • PRACH physical random access channel
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • OFDMA orthogonal frequency division multiple access
  • MIMO multiple antenna
  • the Release 10 version of 3GPP has been evaluated and tested by the International Telecommunication Union and officially became the fourth generation of the global mobile communication standard LTE-Advanced.
  • carrier aggregation (CA) and relay technologies are introduced to enhance the uplink/downlink MIMO technology and support the deployment of heterogeneous networks (HetNet).
  • HetNet heterogeneous networks
  • 3GPP decided to introduce low-cost inter-machine communication technology (MTC) in LTE and its upgraded versions to migrate MTC services from current GSM network support.
  • MTC inter-machine communication technology
  • Support to the LTE network and define a new type of user equipment, called a low-cost MTC UE, which supports the MTC service in all duplex modes of the existing LTE network, and has such a Performance: 1) single receive antenna; 2) downlink and uplink maximum transmission module (TBS) is 1000 bits; 3) downlink data channel baseband bandwidth reduced to 1.4MHz, downlink control channel bandwidth and network layer system The bandwidth is consistent, and the uplink channel bandwidth and the radio frequency portion of the downlink are consistent with the user equipment in the existing LTE network.
  • TBS downlink and uplink maximum transmission module
  • MTC is a data communication service that does not require human involvement.
  • Large-scale deployment of MTC user equipment can be used in security, tracking, billing, measurement, and consumer electronics applications, including video surveillance, supply chain tracking, smart meters, remote monitoring, and more.
  • MTC requires lower power consumption, supports lower data transmission rates and lower mobility.
  • the LTE system is mainly aimed at human-to-human (H2H) communication services. Therefore, to achieve the scale competitive advantage and application prospects of MTC services, the key link lies in LTE network support.
  • Low-cost MTC devices can work at low cost.
  • MTC equipment needs to be installed in the basement of a residential building or protected by a thick wall of insulating foil, metal window or traditional building. Compared to conventional equipment terminals (such as mobile phones, tablets, etc.) in LTE networks, these devices are airborne. The interface will obviously suffer from more severe penetration losses. 3GPP decided to study the scheme design and performance evaluation of LTE network to provide additional 20dB coverage enhancement service for MTC equipment. It is worth noting that MTC equipment located in poor network coverage area has such characteristics: very low data transmission rate, very loose delay Requirements, and very limited mobility. For MTC characteristics, the LTE network can further optimize some signaling and/or channels to support MTC.
  • 3GPP requires certain LTE network coverage enhancements for newly defined low cost UEs and other UEs running MTC services (eg, very relaxed latency requirements), where 15 dB of network coverage is provided for LTE Frequency Division Duplex (FDD) networks Enhanced.
  • FDD Frequency Division Duplex
  • the Physical Random Access Channel (PRACH) of LTE is used to implement uplink timing peers for user equipments that have not yet implemented or have lost uplink peers, that is, a random access procedure. Once the uplink peers are completed, the base station network can schedule them. Upstream orthogonal peer resources. Therefore, the LTE Physical Random Access Channel (PRACH) plays an important role as an interface for non-peer user equipment and LTE uplink radio access. There are two types of LTE random access procedures: "competition based" access and “non-competitive" access.
  • the user equipment randomly selects a random access preamble signature according to the received PRACH resource configuration parameter, and the result is that there is a possibility that multiple user equipments simultaneously transmit the same signature on the same PRACH physical channel. This requires subsequent determination of the subsequent contention solution; for non-competitive access, the LTE network assigns a special signature sequence to the user equipment to avoid contention, which is especially important for time-limited handover situations.
  • the minimum bandwidth of PRACH is the minimum frequency domain resource allocation unit of the system, ie 180KHz (resource block RB bandwidth); one suggestion is that the PRACH minimum bandwidth is the same as the minimum system bandwidth supported by LTE, ie 1.25MHz.
  • 3GPP decided to adopt a fixed 1.25MHz PRACH transmission bandwidth. If it needs to obtain a higher access probability, configure multiple 1.25MHz bandwidths (the actual PRACH effective bandwidth is 6 RBs, g ⁇ 1.08MHz). PRACH enables frequency domain multiplexing with PUCCH and PUSCH.
  • the time domain structure of PRACH is determined by two variables, random access (RA) slot length and period, where the RA slot length is determined to be 1 subframe length, ie lms.
  • the subframe position at which the RA slot is located depends on the transmission period of the RA slot and The subframe number in which the RA slot is located, and the specific frequency domain position of the RA slot is determined to be two possible positions in close proximity to the PUCCH.
  • the PRACH preamble sequence uses a ZC sequence of length 839. The total number of ZC sequences depends on the length of the ZC sequence. 839 ZC sequences are allocated among multiple cells, and adjacent cells use different ZC sequences to effectively suppress different cells. Mutual interference between the PRACH channels.
  • the LTE TDD system defines four PRACH preamble sequence formats, each of which is defined by a sequence duration and a cyclic prefix CP.
  • the current PRACH design structure and configuration cannot meet this requirement, so it is necessary to redesign the MTC device with additional 20dB coverage enhancement requirements (where 15dB coverage enhancement is provided in the LTE FDD network).
  • the main PRACH coverage enhancement can be achieved by: 1) the PRACH preamble sequence is repeated or redesigned by the preamble sequence; 2) relaxing the PRACH detection probability requirement and the PRACH delay requirement; ) Power spectral density enhancement.
  • the 3GPP discussion decided that the PRACH can be used by the user equipment running the MTC service to inform the LTE base station of the amount of coverage enhancement it needs.
  • the coverage enhancement is based on the time-frequency resources and energy of the LTE network. Not all MTC devices need the same coverage enhancement. From the perspective of resource efficiency, the MTC device should be used as little as possible. Time-frequency resources are used to implement random access to meet coverage enhancement requirements. Therefore, considering the low-cost requirements of the MTC device and the characteristics of the MTC service, how to effectively implement the coverage enhancement of the PRACH channel by the LTE network is an urgent problem to be solved. How to implement the coverage enhancement of the base station by using the PRACH to notify the base station is also needed to be solved. The problem. Summary of the invention
  • the present invention proposes a PRACH transmission mechanism for MTC user equipment (including low-cost UEs, and other UEs that perform delay-tolerant MTC services and require certain network coverage enhancement).
  • MTC user equipment including low-cost UEs, and other UEs that perform delay-tolerant MTC services and require certain network coverage enhancement.
  • the LTE network configures the PRACH parameter, and the MTC device selects the corresponding preamble sequence and the PRACH resource to perform a random access attempt, and the LTE network according to the detected sequence signature and (or) the corresponding PRACH resource, the type of the user equipment and/or the required coverage enhancement amount are known.
  • a method performed by a base station including: generating and transmitting a physical random access channel PRACH configuration parameter for a user equipment; detecting a random preamble sequence and/or a corresponding PRACH sent by the user equipment A set of resources to determine a type and/or coverage enhancement level for the user equipment; and generate a random access response based on the type of the user equipment and/or the coverage enhancement level.
  • the user equipment is broadcasted in a serving cell through a physical layer broadcast channel
  • the PRACH configuration parameter of the user equipment is transmitted in the system information according to the PRACH-ConfigSIB specification, or the PRACH configuration parameter of the user equipment is transmitted in the mobility control information according to the PRACH-Config specification.
  • the user equipment is transmitted by the system information block SIB or the layer 2/layer 3 message
  • the PRACH configuration parameter includes one or more of the following: a PRACH preamble sequence basic parameter, a random access mode, a cell coverage enhancement level configuration, and a PRACH resource set required by user equipments at different coverage enhancement levels.
  • the base station detects a random access preamble sequence sent by the user equipment from the pre-defined and/or configured PRACH resources, determines a type of the user equipment, and/or determines a coverage enhancement level for the user equipment, where
  • the PRACH resource set has a one-to-one correspondence with the coverage enhancement level of the user equipment.
  • the PRACH random preamble sequence signature selected by the user equipment is detected to determine a type and/or coverage enhancement level for the user equipment, wherein the PRACH random preamble sequence signature has a corresponding relationship with the coverage enhancement level of the user equipment.
  • the random access response comprises one or more of the following: an uplink peer time adjustment, a cell radio temporary identity, and a layer 2/layer 3 uplink message grant.
  • a method performed by a user equipment including: receiving a physical random access channel PRACH configuration parameter; calculating a coverage enhancement of the user equipment, etc. And selecting a corresponding PRACH resource set and a random access preamble sequence for random access.
  • the user equipment obtains a one-to-one correspondence between the coverage enhancement level and the path loss from the PRACH configuration parameter, and calculates the coverage enhancement of the user equipment based on the path loss or the user measurement or the coverage level of the last successful access. grade.
  • the user equipment selects a random access preamble sequence according to the calculated coverage enhancement level or the maximum coverage level, and sends a random access preamble sequence by using a PRACH resource set corresponding to the calculated coverage enhancement level, in the random access process, User equipment of different coverage levels adopts code division multiplexing.
  • the user equipment randomly selects a preamble sequence from a preamble sequence for non-contention random access, and reuses a PRACH resource set corresponding to the preamble sequence.
  • the user equipment adopts all existing or partial PRACH preamble sequences and uses an independent PRACH resource set, where the PRACH resource set of the user equipment does not overlap with existing PRACH resources, existing reference signals, and other existing channels. Conflict.
  • the PRACH resource set includes N PRACH basic units, where N is a positive integer.
  • the PRACH basic unit adopts a method of frequency hopping transmission.
  • the frequency domain location of the PRACH base unit is fixed.
  • the durations of the plurality of PRACH resource sets for the user equipment are the same as each other.
  • the durations of the plurality of PRACH resource sets for the user equipment are different from each other.
  • the plurality of PRACH resource sets for the user equipment adopt a nested format.
  • a base station including: a parameter generating unit configured to generate and transmit a physical random access channel PRACH configuration parameter for a user equipment; and a detecting unit configured to detect a sending by the user equipment a random preamble sequence and a corresponding set of PRACH resources to determine a type and/or coverage enhancement level for the user equipment; and a response unit configured to generate a random access response based on the type of the user equipment and/or the coverage enhancement level.
  • the parameter generating unit is configured to: broadcast the PRACH configuration parameter of the user equipment in a serving cell through the physical layer broadcast channel.
  • the parameter generating unit is configured to: transmit the PRACH configuration parameter of the user equipment in the system information according to the PRACH-ConfigSIB specification, or transmit the PRACH configuration parameter of the user equipment in the mobility control information according to the PRACH-Config specification.
  • the parameter generating unit is configured to: transmit the PRACH configuration parameter of the user equipment by means of a system information block SIB or a layer 2/layer 3 message.
  • the PRACH configuration parameter includes one or more of the following: a PRACH preamble sequence basic parameter, a random access mode, a cell coverage enhancement level configuration, and a PRACH resource set required by user equipments at different coverage enhancement levels.
  • the detecting unit is configured to: detect a random access preamble sequence sent by the user equipment from the pre-defined and/or configured PRACH resources, determine a type of the user equipment, and/or determine a coverage enhancement level for the user equipment.
  • the PRACH resource set has a one-to-one correspondence with the coverage enhancement level of the user equipment.
  • the detecting unit is configured to: detect a random preamble sequence signature of the user equipment to determine a type and/or a coverage enhancement level for the user equipment, wherein the random preamble signature of the user equipment has a correspondence with the coverage enhancement level of the user equipment .
  • a user equipment including: a parameter receiving unit configured to receive a physical random access channel PRACH configuration parameter; and a calculating unit configured to calculate a coverage enhancement level at which the user equipment is located; And the access unit is configured to select a corresponding PRACH resource set and a random access preamble sequence for random access.
  • the calculating unit is configured to: obtain a one-to-one correspondence between the coverage enhancement level and the path loss from the PRACH configuration parameter, and calculate the user equipment based on the path loss or the user measurement or the coverage increase level of the last successful access.
  • the coverage enhancement level is in place.
  • the access unit is configured to: select a random access preamble sequence according to the calculated coverage enhancement level, and send a random access preamble sequence using a PRACH resource set corresponding to the calculated coverage enhancement level.
  • the access unit is configured to: randomly select a preamble sequence from the preamble sequence for non-contention random access, and reuse the PRACH resource set corresponding to the preamble sequence.
  • the method for allowing the base station to send the random access procedure information of the serving cell and allowing the MTC user equipment to select the corresponding PRACH resource is implemented randomly. Access mechanism.
  • the technical solution proposed by the present application can improve the resource utilization rate of LTE supporting MTC user equipment, improve spectrum/energy efficiency, and reduce time/frequency resource conflicts between cells.
  • Figure K ⁇ -l b) shows a schematic diagram of a random access procedure in an LTE network
  • FIG. 2 is a schematic diagram showing a location distribution of an MTC user equipment in an LTE cell
  • FIG. 3 is a schematic diagram showing a PRACH basic unit for an MTC user equipment
  • FIG. 4 shows a coverage enhancement level required by an MTC user equipment and its use. Schematic diagram of the correspondence relationship of the PRACH sets;
  • FIG. 5 is a diagram showing a configuration diagram of a PRACH resource set & a PRACH basic unit for an MTC user equipment according to an embodiment of the present invention
  • FIG. 6 is a configuration diagram of a PRACH resource set & a PRACH basic unit for an MTC user equipment according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a PRACH resource set & nested structure for implementing a PRACH resource according to an embodiment of the present invention.
  • FIG. 8 is a diagram showing a PRACH resource set & nested structure for implementing a PRACH resource according to an embodiment of the present invention.
  • FIG. 9 is a flow chart showing a PRACH transmission method according to an embodiment of the present invention.
  • FIG. 10 is a flowchart showing a PRACH reception method according to an embodiment of the present invention.
  • FIG. 11 shows an embodiment according to the present invention. Block diagram of the base station;
  • Figure 12 shows a block diagram of a user equipment in accordance with one embodiment of the present invention. detailed description
  • the present invention proposes (requires additional coverage enhancement or no additional coverage enhancement) low-cost MTC user equipment and other MTC services supporting delay tolerance and requiring certain coverage of enhanced user equipment.
  • the PRACH information transmission/reception method, the base station, and the user equipment (UE) are described in detail. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, detailed descriptions of well-known techniques that are not directly related to the present invention are omitted for the sake of brevity to avoid obscuring the understanding of the present invention.
  • Figures 1(a)-l(b) show two modes of random access procedures in an LTE network, contention-based random access and non-contention random access, in the following scenarios, such as 1) RRC-CONNECTED
  • the user equipment in the state, but has not obtained the uplink peer needs to send new uplink data and control information (such as an event-triggered measurement report); 2) User equipment in RRC-CONNECTED state, but has not obtained the same uplink ⁇ , need to receive new downlink data, so as to transmit ACK/NACK in the uplink; 3) User equipment in the RRC-CONNECTED state, in the handover state from the serving cell to the target cell; 4) From RRC-IDLE to RRC – conversion of the CONNECTED state, such as initial access or tracking area update; 6) recovery from the failure of the radio link failure, the user equipment is initialized to a contention-based random access procedure, and the user equipment randomly selects the random access preamble signature, The result is the possibility of multiple user equipments transmitting the same signed pream
  • MTC user equipment is preferentially configured as a contention-based random access procedure. It is necessary to design a preamble sequence for random access selected by the MTC user equipment and a time-frequency resource required for transmitting these sequences, that is, PRACH.
  • FIG. 9 shows a flow chart of a PRACH transmission method according to an embodiment of the present invention. This method can be performed by the base station. As shown in Figure 9, method 90 begins execution at S910.
  • step S920 generating and transmitting a physical random access channel PRACH for the user equipment Configuration parameters.
  • the PRACH configuration parameters of the MTC user equipment can be generated and transmitted in the manner described in Examples 1-4 below.
  • the base station broadcasts in a serving cell through the physical layer broadcast channel (requires additional coverage enhancement and/or does not require additional coverage enhancement).
  • Low-cost MTC user equipment and other user equipments that need coverage coverage enhancement and run delay-tolerant MTC services Random access configuration information.
  • MTC user equipment redesigns the PBCH channel for basic system information (such as system frame number, etc.) and (requires additional coverage enhancement and no additional coverage enhancement) MTC user equipment and other needs
  • the configuration information of the user equipment that enhances and runs the delay-tolerant MTC service including the PRACH preamble sequence parameter, the transmission format, the frequency domain location and the slot period, the RAR reception time window, and the like.
  • the base station transmits the PRACH configuration information in the system information according to the information block PRACH-ConfigSIB specification, and/or transmits the PRACH configuration information in the mobility control information according to the PRACH-Config specification, and the MTC user equipment reads the PRACH-ConfigSIB and/or ) PRACH-Config obtains random access configuration information.
  • 3GPP TS36.331 V11.2.0 mentioned:
  • PRACH-ConfigSIB:: SEQENCE ⁇
  • PRACH-Config:: SEQENCE ⁇
  • PRACH-ConfigSCell-rlO:: SEQUENCE ⁇
  • the base station sends the random access configuration information of the MTC user equipment through the new system information block SIB or the modified PRACH-ConfigSIB and/or PRACH-Config (layer 2/layer 3 message).
  • SIB new system information block
  • PRACH-ConfigSIB modified PRACH-Config
  • PRACH-Config layer 2/layer 3 message.
  • the following modifications are made in the standardization document 3GPP TS 36.211 V10.5.0: Fixed (or newly designed) random access preamble sequence and/or random access for PRACH channels of low cost MTC user equipment that do not require additional coverage enhancement Enter the preamble sequence format.
  • FDD Frame Structure 1
  • the PRACH configuration sequence number (ie, the prach-Configurationlndex is used to indicate the location of the PRACH resource in a radio frame, and the uplink resource is pre-numbered.
  • the high layer signaling provides parameters in the PRACH-Configlndex; ? rac 2-Co « gMrari o
  • MTC-prach-Configrationlndex ie, MTC PRACH configuration number
  • the time-frequency resource size required for PRACH is defined as the existing user equipment of LTE.
  • random access physical resource block " PRB represents the first physical resource block allocated to one PRACH unit (the bandwidth occupying 6 physical resource blocks, the time domain duration is 2 subframes),
  • PRB - PRB offset
  • PRE offset is given by the parameter p rac h-FrequmcyOffset, configured by the higher layer signaling prach-FreqOffset, and satisfies 0 ⁇ ⁇ ⁇ ⁇ .
  • PRACH-ConfigInfo:: SE( 'UENCE ⁇
  • PRACH-ConfigMTC-rl2 SEQUENCE ⁇
  • the configuration information for the random access procedure of all low-cost MTC user equipment is preset in the factory configuration.
  • the random access configuration information of the user equipment may include: basic parameters of the PRACH preamble sequence (root sequence number, configuration sequence number and format, cyclic shift, zero correlation area configuration, etc.), random access mode (including competition based) Random access and non-contention random access), coverage enhancement level configuration of the entire cell division, duration of the PRACH resource set duration required by the MTC users at different coverage enhancement levels, configuration of the PRACH basic unit in the PRACH resource set, And a time window for the MTC user equipment to detect the random access response RAR.
  • a random preamble sequence and a corresponding PRACH resource set sent by the user equipment are detected to determine a type and/or coverage enhancement level for the user equipment.
  • the random preamble sequence sent by the user equipment may be detected from the candidate PRACH resource set to determine a coverage enhancement level for the user equipment, where the PRACH resource set has a one-to-one correspondence with the coverage enhancement level of the user equipment.
  • the random preamble sequence signature of the user equipment may also be detected to determine a coverage enhancement level for the user equipment, where the random preamble sequence signature of the user equipment has a corresponding relationship with the coverage enhancement level of the user equipment.
  • a random access response is generated based on the coverage enhancement level of the user equipment.
  • the random access response may include uplink peer time adjustment, cell wireless network temporary identification, layer 2/layer 3 uplink message grant, and the like.
  • FIG. 10 shows a flow chart of a PRACH receiving method according to an embodiment of the present invention.
  • the method can be performed by a user equipment.
  • method 100 begins at step S1000.
  • a physical random access channel PRACH configuration parameter is received.
  • the coverage enhancement level at which the user equipment is located is calculated.
  • the need to cover enhanced MTC user equipment can determine where they are in the manner described in Examples 1-2 below. Coverage enhancement level.
  • the path loss or user measurement value PL X is used as a positive reference for coverage enhancement, gp. If the path loss experienced by the MTC user equipment is large, it indicates that the coverage level is high.
  • the path loss calculation can reuse the existing LTE mechanism, and the user equipment uses the downlink cell-specific reference signal (CRS) to measure the reference signal received power (RSRP). When the CRS transmit power is known, the user equipment passes the average RSRP. The measured value can be used to estimate the + path loss, and then obtain the information such as the coverage enhancement level required.
  • CRS downlink cell-specific reference signal
  • the random access information of the MTC user equipment such as the random access preamble sequence used, the PRACH resource used, and the slot period of the PRACH, are pre-configured.
  • step S1030 a corresponding PRACH resource set and a random access preamble sequence are selected for random access.
  • a corresponding PRACH resource set and a random access preamble sequence are selected for random access.
  • the method described in the following examples 1-2 can be used. To select a random access preamble sequence and corresponding PRACH resources for the MTC user equipment.
  • the preamble sequence is randomly selected from the preamble sequence for the random access procedure, and the PRACH resource corresponding to the preamble sequence is reused.
  • the PRACH resource corresponding to the preamble sequence is reused.
  • several PRACH resources need to be configured as each random access attempt of the MTC user equipment, which is in different channels.
  • the number of PRACH repetitions required for the fading MTC user equipment is different.
  • a plurality of sequences are selected from a preamble sequence for non-contention random access, and are divided into groups, each group being used for contention-based (or non-competitive) random access of an MTC user equipment of a coverage level.
  • the basic unit of the PRACH is defined as a frequency domain width of 6 RBs, and the duration is 2 subframes.
  • CE based on the coverage enhancement level
  • ⁇ MTC user defining the PRACH required for the MTC user equipment to attempt random access.
  • Figure 2 shows the distribution of MTC user equipment in an LTE cell.
  • the cell is divided into coverage enhancement level areas, namely C, ... CE 4 , which requires 4 sets of PRACH preamble sequences, where is at the cell edge.
  • the channel fading experienced by the MTC user equipment is the most obvious, and the coverage enhancement level of the area is the highest, and the required PRACH resources are the most.
  • For the MTC user equipment that does not need coverage enhancement select a sequence from the random preamble sequence for non-contention random access in the LTE network for the contention based random access procedure, and reuse the PRACH resource corresponding to the random preamble sequence. .
  • the basic unit of PRACH is defined as shown in example 1.
  • the PRACH bandwidth is 6 RBs and the duration is 2 sub- Frame
  • the basic unit of several PRACHs is configured in the uplink radio frame for random access of the MTC user.
  • the MTC user equipment requiring coverage enhancement may inform the base station of the coverage enhancement information (eg, coverage enhancement level CE X ) required by itself according to the manner described in the following examples 1-2.
  • the coverage enhancement information eg, coverage enhancement level CE X
  • the base station provides the MTC user equipment in the cell, or the MTC user equipment is preset in the factory configuration. After the base station sets the random access configuration information of the MTC user, according to the coverage enhancement level CE X calculated by itself, the MTC user equipment randomly selects a random access preamble sequence, and uses the PRACH resource set & sends a random access preamble sequence, and the base station candidate The PRACH resource set set detects the preamble sequence. Once the X value is detected, the base station can obtain the coverage enhancement level information required by the MTC user equipment that attempts to randomly access.
  • the coverage enhancement level corresponding to each random access preamble sequence is defined.
  • the correspondence is included in the random access configuration information of the MTC user equipment, and is provided by the base station to the MTC user equipment in the cell. , or preset in the factory configuration of the MTC user equipment. Once the base station detects the preamble signature of the MTC user equipment, the coverage level information of the MTC user equipment can be obtained.
  • the PRACH resource set of the MTC user equipment includes N PRACH basic units, where N is a positive integer.
  • the PRACH basic unit adopts the method of frequency hopping (Hoppmg) transmission, and the frequency hopping can obtain the diversity gain.
  • the duration period of & The hopping pattern is included in the PRACH configuration information, broadcast by the base station to the MTC user equipment, or preset in the MTC user equipment factory configuration.
  • the frequency domain location of the PRACH basic unit is fixed. Refer to Figure 6, where the duration period of & and the hopping pattern The case is included in the PRACH configuration information, broadcast by the base station to the MTC user equipment, or pre-set in the MTC user equipment factory configuration.
  • the PRACH resource set of the MTC user equipment & takes a nested format, ie & finally, the method 100 ends at step S1040.
  • Figure 11 shows a block diagram of a base station in accordance with one embodiment of the present invention.
  • the base station 1100 includes a parameter generating unit 1110, a detecting unit 1120, and a response unit 1130.
  • the parameter generation unit 1110 generates and transmits a physical random access channel PRACH configuration parameter for the user equipment.
  • the parameter generating unit 1110 may broadcast the PRACH configuration parameter of the MTC user equipment in a serving cell through the physical layer broadcast channel, or send the PRACH configuration parameter of the user equipment in the system information according to the PRACH-ConfigSIB specification, or according to the PRACH-Config specification.
  • the PRACH configuration parameter of the user equipment is sent in the mobility control information, or the PRACH configuration parameter of the user equipment is sent through the system information block SIB or the layer 2/layer 3 message.
  • the detecting unit 1120 detects a random preamble sequence and a corresponding PRACH resource set sent by the user equipment to determine a type and/or coverage enhancement level for the user equipment. For example, the detecting unit 1120 may detect a random preamble sequence sent by the user equipment from the set of candidate PRACH resources to determine a coverage enhancement level for the user equipment, where the PRACH resource set has a one-to-one correspondence with the coverage enhancement level of the user equipment. Alternatively, the detecting unit 1120 may detect a random preamble sequence signature of the user equipment to determine a coverage enhancement level for the user equipment, where the random preamble sequence signature of the user equipment has a corresponding relationship with the coverage enhancement level of the user equipment.
  • the response unit 1130 generates a random access response based on the coverage enhancement level of the user equipment.
  • the random access response may include uplink peer time adjustment, cell radio temporary identity, layer 2/layer 3 uplink message grant, and the like.
  • Figure 12 shows a block diagram of a user equipment in accordance with one embodiment of the present invention.
  • the user equipment 1200 includes a parameter receiving unit 1210, a computing unit 1220, and an access unit 1230.
  • the parameter receiving unit 1210 can receive a physical random access channel PRACH configuration parameter.
  • the PRACH configuration parameter may include one or more of the following: a PRACH preamble sequence basic parameter, a random access mode, a coverage enhancement level configuration of a cell, and a duration of a PRACH resource set required by user equipments at different coverage enhancement levels.
  • the computing unit 1220 calculates the coverage enhancement level at which the user equipment is located. For example, the computing unit 1220 may obtain a one-to-one correspondence between coverage enhancement levels and path loss or user measurements from the PRACH configuration parameters, and calculate a coverage enhancement level at which the user equipment is located based on path loss or user measurements.
  • Access unit 1230 selects a corresponding set of PRACH resources and a random access preamble sequence for random access. For example, the access unit 1230 can select a random access preamble sequence according to the calculated coverage enhancement level and transmit a random access preamble sequence using the PRACH resource set corresponding to the calculated coverage enhancement level. Alternatively, the access unit 1230 may randomly select a preamble sequence from a preamble sequence for non-contention random access and reuse the PRACH resource set corresponding to the preamble sequence.
  • the present invention implements a random access procedure information that allows the base station to send the serving cell and allows the MTC user equipment to select the corresponding PRACH resource to implement randomization. Access mechanism.
  • the technical solution proposed by the present application can improve the resource utilization rate of LTE supporting MTC user equipment, improve spectrum/energy efficiency, and reduce time/frequency resource conflicts between cells.
  • the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware.
  • the base station and various components within the user equipment in the above embodiments may be implemented by various devices including, but not limited to, analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, and programmable processing. , Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (CPLDs), and more.
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • CPLDs Programmable Logic Devices
  • base station refers to a mobile communication data and control switching center having a large transmission power and a relatively large coverage area, including resource allocation scheduling, data reception and transmission, and the like.
  • User equipment means a user mobile terminal, for example, a terminal device including a mobile phone, a notebook, etc., which can perform wireless communication with a base station or a micro base station.
  • embodiments of the invention disclosed herein may be implemented on a computer program product. More specifically, the computer program product is a product having a computer readable medium encoded with computer program logic that, when executed on a computing device, provides related operations to implement The above technical solution of the present invention.
  • the computer program logic When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention.
  • Such an arrangement of the present invention is typically provided as software, code and/or other data structures, such as one or more, disposed or encoded on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy disk, or hard disk.
  • a computer readable medium such as an optical medium (e.g., CD-ROM), floppy disk, or hard disk.
  • Software or firmware or such a configuration may be installed on the computing device such that one or more processors in the computing device perform the technical solutions described in the embodiments of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明提供了一种由基站执行的方法,包括:产生和发送针对用户设备的物理随机接入信道PRACH配置参数;检测用户设备发送的随机前导序列和对应的PRACH资源集合,以确定针对用户设备的类型和/或覆盖增强等级;以及基于用户设备的类型和/或覆盖增强等级,产生随机接入响应。本发明还提供了一种由用户设备执行的方法以及相应的基站和用户设备。采用本发明,能够提高LTE支持MTC用户设备的的资源利用率并改善频谱/能量效率,减少小区间的时间/频率资源冲突。

Description

物理随机接入信道的发送和接收方法以及基站和用户设备 技术领域
本发明涉及无线通信技术领域。 更具体地, 本发明涉及服务小区的物 理随机接入信道 (PRACH) 的发送 /接收方法以及基站 /用户设备。 背景技术
第三代移动通信合作计划组织 (3GPP) 部署的长期演进项目 (LTE) 旨在提供日益多样化的未来移动通信服务, 无线蜂窝通信日益成为大众生 活和工作中不可或缺的一部分, 用户设备终端也呈现多样化的趋势。 在 3GPP LTE的第一版 (即 Release 8) 中, 引入了正交频分多址 (OFDMA) 和多天线 (MIMO) 技术。 3GPP的 Release 10版本经国际电信联盟的评估 和测试, 正式成为了第四代全球移动通信标准 LTE-Advanced。 在 LTE-Advanced标准中, 引入了载波聚合 (CA) 和中继技术, 增强了上行 / 下行 MIMO技术, 同时支持异构网络 (HetNet) 的布署。
为了满足未来家庭设备通信的市场需求和规模庞大的物联网(IOT)部 署, 3GPP决定在 LTE及其升级版本中引入低成本机器间通信技术(MTC), 将 MTC服务由目前的 GSM网络支持迁移至 LTE网络支持, 并定义一种新 的用户设备类型, 称之为低成本 (Low-cost) MTC UE, 该用户设备在现有 LTE网络的所有双工模式中支持 MTC服务, 并具有这样的性能: 1 ) 单接 收天线; 2) 下行和上行最大的传输模块 (TBS) 为 1000比特; 3 ) 下行链 路数据信道的基带带宽降低为 1.4MHz, 下行链路控制信道的带宽与网络层 系统带宽保持一致,上行链路信道带宽以及下行链路的射频部分与现有 LTE 网络中的用户设备保持一致。 MTC是一种不需要人为参与的数据通信服务。 大规模的 MTC用户设备部署, 可以用于安全、 跟踪、 付账、 测量以及消费 电子等领域, 具体涉及的应用包括视频监控、 供货链跟踪、 智能电表, 远 程监控等。 MTC要求较低的功率消耗, 支持较低的数据传输速率和较低的 移动性。 目前 LTE系统主要是针对人与人 (H2H) 的通信服务。 因此, 要 实现 MTC服务的规模竞争优势及应用前景, 关键环节在于 LTE网络支持 低成本的 MTC设备能够低成本工作。
一些 MTC设备需要安装在居民楼地下室或者由绝缘箔片、金属护窗或 者传统建筑物的厚墙保护的位置, 相比较 LTE网络中常规设备终端 (如手 机,平板电脑等),这些设备的空中接口将明显遭受更严重的穿透损失。 3GPP 决定研究 LTE网络提供 MTC设备附加 20dB覆盖增强服务的方案设计与性 能评估, 值得注意的是, 位于糟糕网络覆盖区域的 MTC设备具有这样的特 点: 非常低的数据传输速率, 非常宽松的延时要求, 以及非常有限的移动 性。 针对 MTC特点, LTE网络可以进一歩优化一些信令和 (或)信道用以 支持 MTC。 3GPP要求为新定义的低成本 UE以及其他运行 MTC服务(如, 非常宽松的延迟要求) 的 UE提供一定的 LTE网络覆盖增强, 其中, 对于 LTE频分双工 (FDD) 网络提供 15dB的网络覆盖增强。 另外, 并不是所有 的运用 MTC服务的用户设备都需要相同网络覆盖增强。
LTE的物理随机接入信道 (PRACH) 用于为那些还未实现或者已经失 去上行同歩的用户设备实现上行定时同歩, 即随机接入过程, 一旦完成上 行同歩, 基站网络可以为其调度上行正交同歩资源。 因此 LTE物理随机接 入信道(PRACH)作为非同歩用户设备和 LTE上行无线接入的接口具有重 要作用。 LTE随机接入过程有两种: "基于竞争" 的接入和 "非竞争" 的接 入。在基于竞争的随机接入过程中,用户设备将根据接收的 PRACH资源配 置参数, 随机选择随机接入前导签名, 结果是相同的 PRACH物理信道上存 在多个用户设备同时传输相同签名的可能性, 这需要后续确定后续竞争解 决方案; 对于非竞争的接入, LTE 网络对用户设备分配专门的签名序列来 避免竞争, 这对于受时限影响的切换情况来说尤为重要。
关于 PRACH的最小发送带宽, 在 LTE的研究过程中出现过多种提议。 一种建议是 PRACH 的最小带宽为系统的最小频域资源分配单元, 即 180KHz (资源块 RB带宽); 一种建议是 PRACH最小带宽与 LTE支持的最 小系统带宽相同, 即 1.25MHz。 3GPP经过讨论, 决定采用固定的 1.25MHz PRACH传输带宽, 如果需要获得更高的接入概率, 则配置多个 1.25MHz 带宽 (实际的 PRACH有效带宽是 6个 RB, g卩 1.08MHz)。 PRACH能够实 现与 PUCCH和 PUSCH 的频域复用。 PRACH 的时域结构是由随机接入 (RA) 时隙长度和周期两个变量来确定, 其中 RA时隙长度被确定为 1个 子帧长度, 即 lms。 RA时隙所处的子帧位置取决于 RA时隙的发送周期和 RA时隙所处的子帧编号, RA时隙的具体频域位置确定为紧邻 PUCCH的 两个可能的位置。 PRACH前导序列采用长度为 839的 ZC序列, ZC序列的 总数量取决于 ZC序列的长度, 839个 ZC序列在多个小区之间分配, 相邻 小区采用不同的 ZC序列用以有效地抑制不同小区间 PRACH信道的相互干 扰。 LTE TDD系统定义了 4种 PRACH前导序列格式, 每种格式由序列持 续时间和循环前缀 CP定义。
由于部分 MTC设备需要附加 20dB的覆盖增强, 目前的 PRACH设计 结构与配置无法满足这一要求,因此需要为附加 20dB覆盖增强要求的 MTC 设备(其中, LTE FDD网络中提供 15dB的覆盖增强)重新设计 PRACH或 者改进目前的 PRACH机制。根据目前 3GPP讨论的进展以及未来趋势, 主 要的 PRACH覆盖增强可以通过以下几方面来实现: 1 ) PRACH前导序列 重复或者重新设计的前导序列; 2)放宽 PRACH检测概率要求以及 PRACH 时延要求; 3 )功率谱密度增强。 另外, 3GPP讨论决定, PRACH可以被用 于运行 MTC服务的用户设备将其所需的覆盖增强量通知 LTE基站。 需要 注意的是, 覆盖增强是以 LTE网络的时频资源及能量为代价的, 并不是所 有的 MTC 设备都需要相同的覆盖增强量, 从资源效率的角度来说, MTC 设备应该使用尽可能少的时频资源来实现随机接入用以满足覆盖增强要 求。 因此, 兼顾 MTC设备的低成本要求, 以及 MTC服务的特点, LTE网 络如何有效地实现 PRACH信道的覆盖增强是一个亟需解决的问题, MTC 用户设备如何实现利用 PRACH通知基站覆盖增强量也是需要解决的问题。 发明内容
针对以上问题, 基于 LTE网络, 本发明提出了用于 MTC用户设备(包 括低成本 UE, 以及其他执行延迟容忍 MTC服务并需要一定网络覆盖增强 的 UE) 的 PRACH发送机制。 根据本发明, 基于目前 LTE网络中基于竞争 的随机接入框架下, LTE网络进行配置 PRACH参数, MTC设备选择相应 的前导序列和 PRACH资源进行随机接入尝试, LTE网络根据检测到的序列 签名和(或)对应的 PRACH资源, 获知该用户设备的类型和(或)所需的 覆盖增强量。 根据本发明的一个方面, 提供了一种由基站执行的方法, 包括: 产生 和发送针对用户设备的物理随机接入信道 PRACH配置参数;检测用户设备 发送的随机前导序列和(或)对应的 PRACH资源集合, 以确定针对用户设 备的类型和 /或覆盖增强等级; 以及基于用户设备的类型和 /或覆盖增强等 级, 产生随机接入响应。
优选地, 通过物理层广播信道在一个服务小区中广播用户设备的
PRACH配置参数。
优选地, 根据 PRACH-ConfigSIB规范在系统信息中发送用户设备的 PRACH配置参数, 或根据 PRACH-Config规范在移动性控制信息中发送用 户设备的 PRACH配置参数。
优选地, 通过系统信息块 SIB或者层 2/层 3消息发送用户设备的
PRACH配置参数。
优选地, 所述 PRACH配置参数包括以下一项或更多项: PRACH前导 序列基本参数、 随机接入方式、 小区的覆盖增强等级配置、 处于不同覆盖 增强等级的用户设备所需的 PRACH资源集合的持续时间周期、 PRACH资 源集合内的 PRACH基本单元的配置、以及用户设备用于检测随机接入响应 RAR的时间窗。
优选地, 基站从预先定义和(或配置)的 PRACH资源中检测用户设备 发送的随机接入前导序列, 以确定该用户设备的类型, 和 (或) 确定针对 该用户设备的覆盖增强等级, 其中, PRACH资源集合与用户设备的覆盖增 强等级具有一一对应关系。
优选地,检测用户设备选择的 PRACH随机前导序列签名以确定针对用 户设备的类型和 (或)覆盖增强等级, 其中, PRACH随机前导序列签名与 用户设备的覆盖增强等级具有对应关系。
优选地, 所述随机接入响应包括以下一项或更多项: 上行链路同歩时 间调整、 小区无线临时标识、 以及层 2/层 3上行链路消息准予。
根据本发明的另一个方面, 提供了一种由用户设备执行的方法, 包括: 接收物理随机接入信道 PRACH配置参数;计算用户设备所处的覆盖增强等 级; 以及选择相应的 PRACH资源集合和随机接入前导序列以进行随机接 入。
优选地,用户设备从 PRACH配置参数中获取覆盖增强等级与路径损耗 之间的一一对应关系, 并且基于路径损耗或用户测量或者上次成功接入的 覆盖等级来计算用户设备所处的覆盖增强等级。
优选地, 用户设备根据计算的覆盖增强等级或者最大的覆盖等级选择 随机接入前导序列,并使用与计算的覆盖增强等级相对应的 PRACH资源集 合发送随机接入前导序列, 在随机接入过程, 不同覆盖等级的用户设备采 取码分复用方式。
优选地, 用户设备从用于非竞争随机接入的前导序列中随机选择前导 序列, 并且重用该前导序列所对应的 PRACH资源集合。
优选地,用户设备采用现有的全部或部分 PRACH前导序列并且使用独 立的 PRACH资源集合, 其中, 用户设备的 PRACH资源集合不与现有的 PRACH资源、 现有的参考信号和现有的其他信道相冲突。
优选地, 所述 PRACH资源集合包括 N个 PRACH基本单元, 其中 N 是正整数。
优选地, PRACH基本单元采取跳频发送的方式。
优选地, PRACH基本单元的频域位置是固定的。
优选地,用于用户设备的多个 PRACH资源集合的持续时间周期彼此相 同。
优选地,用于用户设备的多个 PRACH资源集合的持续时间周期彼此不 同。
优选地, 用于用户设备的多个 PRACH资源集合采取嵌套格式。
根据本发明的另一个方面, 提供了一种基站, 包括: 参数产生单元, 被配置为产生和发送针对用户设备的物理随机接入信道 PRACH配置参数; 检测单元,被配置为检测用户设备发送的随机前导序列和对应的 PRACH资 源集合, 以确定针对用户设备的类型和 /或覆盖增强等级; 以及响应单元, 被配置为基于用户设备的类型和 /或覆盖增强等级, 产生随机接入响应。 优选地, 参数产生单元被配置为: 通过物理层广播信道在一个服务小 区中广播用户设备的 PRACH配置参数。
优选地, 参数产生单元被配置为: 根据 PRACH-ConfigSIB规范在系统 信息中发送用户设备的 PRACH配置参数,或根据 PRACH-Config规范在移 动性控制信息中发送用户设备的 PRACH配置参数。
优选地, 参数产生单元被配置为: 通过系统信息块 SIB或者层 2/层 3 消息发送用户设备的 PRACH配置参数。
优选地, 所述 PRACH配置参数包括以下一项或更多项: PRACH前导 序列基本参数、 随机接入方式、 小区的覆盖增强等级配置、 处于不同覆盖 增强等级的用户设备所需的 PRACH资源集合的持续时间周期、 PRACH资 源集合内的 PRACH基本单元的配置、以及用户设备用于检测随机接入响应 RAR的时间窗。
优选地, 检测单元被配置为: 从预先定义和 /或配置的 PRACH资源中 检测用户设备发送的随机接入前导序列, 以确定该用户设备的类型和 /或确 定针对该用户设备的覆盖增强等级, 其中, PRACH资源集合与用户设备的 覆盖增强等级具有一一对应关系。
优选地, 检测单元被配置为: 检测用户设备的随机前导序列签名以确 定针对用户设备的类型和 /或覆盖增强等级, 其中, 用户设备的随机前导序 列签名与用户设备的覆盖增强等级具有对应关系。
根据本发明的另一个方面, 提供了一种用户设备, 包括: 参数接收单 元, 被配置为接收物理随机接入信道 PRACH配置参数; 计算单元, 被配置 为计算用户设备所处的覆盖增强等级; 以及接入单元, 被配置为选择相应 的 PRACH资源集合和随机接入前导序列以进行随机接入。
优选地,计算单元被配置为:从 PRACH配置参数中获取覆盖增强等级 与路径损耗之间的一一对应关系, 并且基于路径损耗或用户测量或者上次 成功接入的覆盖增加等级来计算用户设备所处的覆盖增强等级。
优选地, 接入单元被配置为: 根据计算的覆盖增强等级选择随机接入 前导序列,并使用与计算的覆盖增强等级相对应的 PRACH资源集合发送随 机接入前导序列。 优选地, 接入单元被配置为: 从用于非竞争随机接入的前导序列中随 机选择前导序列, 并且重用该前导序列所对应的 PRACH资源集合。
通过本申请提出的服务小区的 MTC用户设备的随机接入过程信息的 发送和接收机制, 实现了一种允许基站发送服务小区的随机接入过程信息 以及允许 MTC用户设备选择对应的 PRACH资源实施随机接入的机制。 采 用本申请提出的技术方案, 能够提高 LTE支持 MTC用户设备的的资源利 用率并改善频谱 /能量效率, 减少小区间的时间 /频率资源冲突。 附图说明
通过下文结合附图的详细描述, 本发明的上述和其它特征将会变得更 加明显, 其中:
图 K^-l b)示出了 LTE网络中随机接入过程的示意图;
图 2示出了一个 LTE小区中 MTC用户设备位置分布的示意图; 图 3示出了用于 MTC用户设备的 PRACH基本单元的示意图; 图 4示出了 MTC用户设备所需的覆盖增强等级与其使用的 PRACH集 合的对应关系示意图;
图 5示出了根据本发明一个实施例的用于 MTC用户设备的 PRACH资 源集合 &中 PRACH基本单元的配置图;
图 6示出了根据本发明一个实施例的用于 MTC用户设备的 PRACH资 源集合 &中 PRACH基本单元的配置图;
图 7示出了根据本发明一个实施例的用于实现 PRACH资源集合 &嵌 套结构的示意图;
图 8示出了根据本发明一个实施例的用于实现 PRACH资源集合 &嵌 套结构的示意图;
图 9示出了根据本发明一个实施例的 PRACH发送方法的流程图 ·' 图 10示出了根据本发明一个实施例的 PRACH接收方法的流程图; 图 11示出了根据本发明一个实施例的基站的框图; 以及
图 12示出了根据本发明一个实施例的用户设备的框图。 具体实施方式
以下将结合附图和具体实施例, 对本发明所提出的针对 (需要额外覆 盖增强或者不需要额外覆盖增强)低成本 MTC用户设备以及其他支持延迟 容忍的 MTC服务并需要一定覆盖增强的用户设备的 PRACH信息发送 /接收 方法、 基站和用户设备 (UE) 进行详细阐述。 应当注意, 本发明不应局限 于下文所述的具体实施例。 另外, 为了简便起见, 省略了对与本发明没有 直接关联的公知技术的详细描述, 以防止对本发明的理解造成混淆。
下文以 LTE移动通信系统及其后续的演进版本作为示例应用环境, 具 体描述了根据本发明的多个实施例。 然而, 需要指出的是, 本发明不限于 以下实施例, 而是可适用于更多其它的无线通信系统, 例如今后的 5G蜂窝 通信系统。
图 l(a)-l(b)示出了 LTE网络中随机接入过程的两种模式, 基于竞争的 随机接入和非竞争的随机接入, 在如下场景中, 如 1 ) RRC— CONNECTED 状态下的用户设备, 但还未获得上行同歩, 需要发送新的上行数据和控制 信息(如一个事件触发的测量报告); 2) RRC— CONNECTED状态下的用户 设备, 但还未获得上行同歩, 需要接收新的下行数据, 从而在上行传输响 应的 ACK/NACK; 3 ) RRC— CONNECTED状态下的用户设备, 处于从正在 服务小区到目标小区的切换状态; 4)从 RRC— IDLE到 RRC— CONNECTED 状态的转换, 比如初始接入或跟踪区域更新; 6) 从无线链路链接失败状态 下恢复, 用户设备初始化为基于竞争的随机接入过程, 用户设备随机选择 随机接入前导序列签名, 结果是存在多个用户设备同时传输相同签名的前 导序列的可能性, 这需要确定后续竞争解决方案流程。对于场景 2)新的下 行数据和场景 3 )切换, 基站通过对用户设备分配专门的签名前导序列来避 免竞争, 这种非竞争的随机接入快于基于竞争的随机接入, 避免了不可预 测的延时影响。 考虑到 MTC用户设备的特点, 如有限的移动性, 非常低的 数据传输速率和宽松的延时要求, MTC用户设备优先配置为基于竞争的随 机接入过程。需要设计 MTC用户设备随机选择的用于随机接入的前导序列 以及传输这些序列所需的时频资源, 即 PRACH。
图 9示出了根据本发明一个实施例的 PRACH发送方法的流程图。该方 法可以由基站来执行。 如图 9所示, 方法 90在 S910处开始执行。
在歩骤 S920处,产生和发送针对用户设备的物理随机接入信道 PRACH 配置参数。 基于 LTE网络, MTC用户设备的 PRACH配置参数可以按照以 下示例 1-4所描述的方式产生和发送。
1. 基站通过物理层广播信道在一个服务小区广播发送 (需要额外覆盖 增强和(或者)不需要额外覆盖增强)低成本 MTC用户设备以及其他需要 覆盖增强并运行延迟容忍 MTC 服务的用户设备所需要的随机接入配置信 息。 如, 为 (需要额外覆盖增强) MTC用户设备重新设计 PBCH信道, 用 来发送基本的系统信息 (如系统帧号等) 和 (需要额外覆盖增强和不需要 额外覆盖增强) MTC用户设备以及其他需要覆盖增强并运行延迟容忍 MTC 服务的用户设备的配置信息, 包括 PRACH前导序列参数, 发送格式, 频域 位置及时隙周期、 RAR接收时间窗等。
2. 基站根据信息块 PRACH-ConfigSIB规范在系统信息中发送 PRACH 配置信息,和 /或根据 PRACH-Config规范在移动性控制信息中发送 PRACH 配置信息, MTC 用户设备通过读取 PRACH-ConfigSIB 和 (或) PRACH-Config获取随机接入配置信息。 在标准规范化文书 3GPP TS36.331 V11.2.0提到:
PRACH-ConfigSIB:: = SEQENCE{
rootSequencelndex INTEGER {0...837},
prach-Configlnfo PRACH-Configlnfo
PRACH-Config:: = SEQENCE{
rootSequencelndex INTEGER {0...837},
prach-Configlnfo PRACH-Configlnfo OPTIONAL -Need ON
PRACH-ConfigSCell-rlO:: = SEQUENCE {
Prach-Configlndex-rlO INTERGE {0...63 } PRACH-Configlnfo:: = SEQUENCE {
prach-Configlndex INTEGER {0...63}
highSpeedFlag BOOLEAN,
zeroCorrelationZoneConfig INTEGER{0... 15},
prach-FreqOffset INTEGER{0...94}
3. 基站通过新的系统信息块 SIB或者修改后的 PRACH-ConfigSIB 和 (或) PRACH-Config (层 2/层 3消息) 发送 MTC用户设备的随机接入配 置信息。 如, 在标准化文书 3GPP TS36.211 V10.5.0中做如下修改: 针对不需要额外覆盖增强的低成本 MTC用户设备的 PRACH信道, 固 定 (或者新设计) 随机接入前导序列和 (或) 随机接入前导序列格式。
针对需要额外覆盖增强的 MTC用户设备 (包括低成本 MTC用户设备 以及其他需要覆盖增强并运行延迟容忍 MTC服务的用户设备) 的 PRACH 信道, 固定 (或新设计) 随机接入前导序列格式, 在无线帧结构 1 (FDD ) 中, 如, 采用现有的前导序列格式 2。
PRACH配置序号 (即 prach-Configurationlndex 用来指示 PRACH资 源在一个无线帧中的位置, 并且预先编号上行链路资源。 其中, 高层信令 在 PRACH-Configlndex中提供参数;? rac 2-Co« gMrari o«/«ifex。 如, 可以修 改 3GPP TS36.211 V10.5.0中的 Table5.7.1-2, 选择适用 MTC用户设备的 PRACH 配置, 并重新编号为 MTC-prach-Configrationlndex (即, MTC PRACH配置序号) 为 0~13, 如下表所示:
MTC PRACH 随机接入前 系统帧号 子帧号
PRACH 配置序号 导格式
配置序号
0 32 2 偶数 1
1 33 2 偶数 4
2 34 2 偶数 7
3 35 2 1 4 36 2 4
5 37 2 7
6 38 2 1,6
7 39 2 2,7
8 40 2 3,8
9 41 2 1,4,7
10 42 2 2, 5,8
11 43 2 3,6,9
12 44 2 0, 2, 4, 6, 8
13 45 2 1,3,5, 7,9
表 1
或者, 进一歩简化 MTC-prach-Configrationlndex, 选取序号 38~45, 并 P?编号为 0~7, 如下表所示:
Figure imgf000012_0001
表 2 针对不需要覆盖增强的低成本 MTC用户设备, PRACH所需的时频资 源大小的定义如 LTE现有的用户设备。
针对需要覆盖增强的 MTC用户设备 (包括低成本 MTC用户设备以及 其他需要网络覆盖增强并运行延迟容忍 MTC服务的用户设备), 重用现有 定义的 , 随机接入物理资源块 "PRB表示分配给一个 PRACH单元 (占用 6个物理资源块的带宽, 时域持续时间为 2个子帧) 的第一个物理资源块,
RA _ RA RA
定义 "PRB - "PRB offset, 其中" PRE offset由参数 prach-FrequmcyOffset给定, 通过高 层信令 prach-FreqOffset来配置, 并满足 0≤ ^ ^
增加一个随机接入参数, ^表示配置覆盖增强等级为 CEX的随机接入 持续发送时间, 其中, χ=1,... ^ 表示系统覆盖增强等级总数, 参数 ^ 由高层信令 PRACH-Configlnfo配置。
修改 3GPP TS36.331 V11.2.0中 PRACH-Configlnfo, 如下,
PRACH-Configlnfo:: = SE( 'UENCE{
prach-Configlndex MTC-prach-Configlndex,
zeroCorrelationZoneConfig INTEGER{0...15},
prach-FreqOffset INTEGER{0...94}
PRACH-ConfigMTC-rl2:: = SEQUENCE {
MTC-prach-ConfiglndexMTC INTEGER{0...7 } ,
prach-CoverEnhLevelMTC INTEGER {1... },
prach-FirstStartSubframeMTC INTEGER{0...9}
4. 所有的低成本 MTC用户设备的随机接入过程的配置信息在出厂配 置中预先设定。
在本发明中, 用户设备的随机接入配置信息可以包括: PRACH前导序 列基本参数 (根序列序号, 配置序号和格式, 循环移位, 零相关区域配置 等), 随机接入方式 (包括基于竞争的随机接入和非竞争随机接入), 整个 小区划分的覆盖增强等级配置,处于不同覆盖增强等级的 MTC用户所需的 PRACH资源集合持续时间周期, PRACH资源集合内的 PRACH基本单元 的配置, 以及用于 MTC用户设备检测随机接入响应 RAR的时间窗等。
在歩骤 S930处, 检测用户设备发送的随机前导序列和对应的 PRACH 资源集合, 以确定针对用户设备的类型和 (或) 覆盖增强等级。 优选地, 可以从候选的 PRACH资源集合集中检测用户设备发送的随机前导序列,以 确定针对用户设备的覆盖增强等级, 其中, PRACH资源集合与用户设备的 覆盖增强等级具有一一对应关系。 另外, 还可以检测用户设备的随机前导 序列签名以确定针对用户设备的覆盖增强等级, 其中, 用户设备的随机前 导序列签名与用户设备的覆盖增强等级具有对应关系。
在歩骤 S940处, 基于用户设备的覆盖增强等级, 产生随机接入响应。 优选地, 随机接入响应可以包括上行链路同歩时间调整、 小区无线网络临 时标识、 层 2/层 3上行链路消息准予, 等等。
最后, 方法 90在歩骤 S950处结束。
图 10示出了根据本发明一个实施例的 PRACH接收方法的流程图。 该 方法可以由用户设备来执行。如图 10所示,方法 100在歩骤 S1000处开始。
在歩骤 S1010处, 接收物理随机接入信道 PRACH配置参数。
在歩骤 S1020处,计算用户设备所处的覆盖增强等级。在 LTE网络中, 需要覆盖增强的 MTC用户设备 (包括低成本 MTC UE以及其他需要网络 覆盖增强并运行延迟容忍 MTC服务的用户设备)可以按照以下示例 1-2所 描述的方式来确定自己所处的覆盖增强等级。
1. 定义覆盖增强等级 CEX与路径损耗(Path-loss) PLx或者下行信号的 用户测量值之间的一一对应关系, 其中 =1,... , 并且这一对应关系包含 在 MTC用户设备的随机接入配置信息中, 由基站提供给小区内的 MTC用 户设备, 或者低成本 MTC用户设备在出厂配置中预先设定。路径损耗或者 用户测量值 PLX作为覆盖增强的正参照, gp, 若 MTC用户设备所经历的路 径损耗大, 则表明其所处的覆盖等级高。 路径损耗的计算可以重用 LTE现 有的机制, 用户设备使用下行链路的小区专用参考信号(CRS)来测量参考 信号接收功率 (RSRP), 在 CRS发射功率获知的情况下, 用户设备通过平 均 RSRP的测量值, 可以估计出 +路径损耗, 进而获取其所需的覆盖增强等 级等信息。
2. 在任一 MTC用户设备部署时, 预先配置好该 MTC用户设备的随机 接入信息,如所用随机接入前导序列,所使用的 PRACH资源,以及 PRACH 的时隙周期等。
在歩骤 S1030,选择相应的 PRACH资源集合和随机接入前导序列以进 行随机接入。 例如, 在 LTE网络中, 可以根据以下示例 1-2所描述的方式 来为 MTC用户设备选择随机接入前导序列以及相应的 PRACH资源。
1. 在一个服务小区中, 针对需要覆盖增强的 MTC用户设备 (包括低 成本 MTC UE以及其他需要网络覆盖增强并运行延迟容忍 MTC服务的用 户设备) 从 LTE网络中用于非竞争随机接入中前导序列中随机选择前导序 列用于基于随机接入过程,并且重用该前导序列所对应的 PRACH资源,此 时需将若干个 PRACH资源配置为 MTC用户设备的每次随机接入尝试, 处 于不同信道衰落下的 MTC用户设备所需的 PRACH重复次数不同。具体地, 从用于非竞争随机接入的前导序列中选出若干个序列, 分为若干组, 每组 用于某一覆盖覆盖等级的 MTC用户设备的基于竞争(或非竞争)随机接入, 定义 PRACH的基本单元为 6RB的频域宽度,且持续时间长度为 2个子帧, 此时, 基于处于覆盖增强等级为 CE;^ MTC用户, 定义该 MTC用户设备 尝试随机接入所需的 PRACH基本单元数目为 , 其中 ^=1,... , M为一 个网络小区中划分的用于 MTC用户设备所有可能的覆盖等级数目。图 2给 出了一个 LTE小区中 MTC用户设备的分布情况, 该小区被划分为 个 覆盖增强等级区域, 即 C , ...CE4, 则需要有 4组 PRACH前导序列, 其 中, 处于小区边缘的 MTC用户设备所经历的信道衰落最明显, 该区域覆盖 增强等级最高, 其所需的 PRACH资源最多。 针对不需要覆盖增强的 MTC 用户设备, 从 LTE网络中用于非竞争随机接入的随机前导序列中选取若干 序列用于基于竞争的随机接入过程, 并重用该随机前导序列所对应的 PRACH资源。
2. 在一个服务小区中, 采用全部或部分 LTE的 PRACH前导序列, 用 于所有 (含需要覆盖增强与不需要覆盖增强) MTC用户设备的基于竞争的 随机接入过程, 并且为 MTC用户配置独立的 PRACH时频资源, 其中为低 成本 MTC用户设备的 PRACH资源不与现有的 PRACH资源相冲突, 不与 现有的参考信号冲突, 不与现有的其他信道相冲突。 针对需要覆盖增强的 MTC用户设备(包括低成本 MTC UE以及其他需要网络覆盖增强并运行延 迟容忍 MTC服务的用户设备),如示例一定义 PRACH的基本单元(PRACH 带宽为 6RB, 持续时间为 2个子帧), 在上行无线帧中配置若干 PRACH的 基本单元用于 MTC用户的随机接入。其中,处于覆盖增强等级 CEJ MTC 用户设备,选择 个 PRACH基本单元用于尝试随机接入, 其中 =1,... , M表示一个网络小区中划分的 MTC用户设备所有可能的覆盖等级总数,如 图 2所示的小区为 MTC用户设备划分了 4个覆盖增强区域,处于不同区域 的 MTC用户设备所需的 PRACH资源也不同。
另外, 在 LTE网络中, 需要覆盖增强的 MTC用户设备可以按照以下 示例 1-2所描述的方式将自己所需的覆盖增强信息(如,覆盖增强等级 CEX) 告知基站。
1. 记覆盖增强等级 CE^ f对应的 PRACH资源集合 &, 定义 PRACH 资源集合与覆盖增强等级 CEX之间的一一对应关系, 参照图 4, 其中 =l,... 这一对应关系包含在 MTC用户设备的随机接入配置信息中, 由 基站提供给小区内的 MTC用户设备, 或者 MTC用户设备在出厂配置中预 先设定。在基站将 MTC用户的随机接入配置信息后, 根据自己计算的覆盖 增强等级 CEX, MTC用户设备随机选择随机接入前导序列, 并使用 PRACH 资源集合 &发送随机接入前导序列, 基站从候选的 PRACH 资源集合集 检测前导序列, 一旦检测出 X值, 基站即可获得该尝试随机接 入的 MTC用户设备所需的覆盖增强等级信息。
2. 在每个小区中,定义每个随机接入前导序列所对应的覆盖增强等级, 这一对应关系包含在 MTC用户设备的随机接入配置信息中, 由基站提供给 小区内的 MTC用户设备, 或者在 MTC用户设备出厂配置中预先设定。 基 站一旦检测出 MTC用户设备的前导序列签名, 即可获知该 MTC用户设备 的覆盖等级信息。 另外, 在 LTE网络中, 以下示例 1-6可以用于需要覆盖增强的 MTC用 户设备 (包括低成本 MTC UE以及其他需要网络覆盖增强并运行延迟容忍 MTC服务的用户设备) 的 PRACH资源集合配置信息&, 其中 ^=1,... 。
1. MTC用户设备的 PRACH资源集合中包含有 N个 PRACH基本单元, 其中 N是正整数。
2. 在用于 MTC用户设备的 PRACH资源集合 &中, PRACH基本单元 采取跳频 (Hoppmg) 发送的方式, 这种跳频可以获得分集增益, 可参照图 5, 其中 &的持续时间周期^以及跳频图案包含在 PRACH配置信息, 由基 站广播给 MTC用户设备, 或者在 MTC用户设备出厂配置中预先设定。
3. 在 MTC用户设备所使用的 PRACH资源集合 &中, PRACH基本单 元的频域位置固定, 可以参照图 6, 其中 &的持续时间周期 ^以及跳频图 案包含在 PRACH配置信息, 由基站广播给 MTC用户设备, 或者在 MTC 用户设备出厂配置中预先设定。
4. 对于 ^=1,... , 用于 MTC用户设备的 PRACH资源集合&的持续 时间周期 ίχ相同, =—.=ίΜ。 例如参照图 7, 其中示出了
5. 对于 ^=1,... , 用于 MTC用户设备的 PRACH资源集合&的持续 时间周期^不同, ≠h ≠...≠ίΜ。例如参照图 8,其中示出了
6. MTC 用户设备的 PRACH 资源集合 &采取嵌套格式, 即 & 最后, 方法 100在歩骤 S1040处结束。
图 11示出了根据本发明一个实施例的基站的框图。 如图 11所示, 基 站 1100包括参数产生单元 1110、 检测单元 1120和响应单元 1130。
参数产生单元 1110 产生和发送针对用户设备的物理随机接入信道 PRACH配置参数。 例如, 参数产生单元 1110可以通过物理层广播信道在 一个服务小区中广播 MTC 用户设备的 PRACH 配置参数, 或根据 PRACH-ConfigSIB规范在系统信息中发送用户设备的 PRACH配置参数, 或根据 PRACH-Config规范在移动性控制信息中发送用户设备的 PRACH配 置参数,或通过系统信息块 SIB或者层 2/层 3消息发送用户设备的 PRACH 配置参数。
检测单元 1120检测用户设备发送的随机前导序列和对应的 PRACH资 源集合, 以确定针对用户设备的类型和 (或) 覆盖增强等级。 例如, 检测 单元 1120可以从候选的 PRACH资源集合集中检测用户设备发送的随机前 导序列, 以确定针对用户设备的覆盖增强等级, 其中, PRACH资源集合与 用户设备的覆盖增强等级具有一一对应关系。 备选地, 检测单元 1120可以 检测用户设备的随机前导序列签名以确定针对用户设备的覆盖增强等级, 其中, 用户设备的随机前导序列签名与用户设备的覆盖增强等级具有对应 关系。
响应单元 1130基于用户设备的覆盖增强等级, 产生随机接入响应。 例 如, 随机接入响应可以包括上行链路同歩时间调整、 小区无线临时标识、 层 2/层 3上行链路消息准予, 等等。
图 12示出了根据本发明一个实施例的用户设备的框图。 如图 12所示, 用户设备 1200包括参数接收单元 1210、 计算单元 1220和接入单元 1230。 参数接收单元 1210可以接收物理随机接入信道 PRACH配置参数。 该 PRACH配置参数可以包括以下一项或更多项: PRACH前导序列基本参数、 随机接入方式、 小区的覆盖增强等级配置、 处于不同覆盖增强等级的用户 设备所需的 PRACH 资源集合的持续时间周期、 PRACH 资源集合内的 PRACH基本单元的配置、 以及用户设备用于检测随机接入响应 RAR的时 间窗。
计算单元 1220计算用户设备所处的覆盖增强等级。例如,计算单元 1220 可以从 PRACH配置参数中获取覆盖增强等级与路径损耗或者用户测量之 间的一一对应关系, 并且基于路径损耗或者用户测量来计算用户设备所处 的覆盖增强等级。
接入单元 1230选择相应的 PRACH资源集合和随机接入前导序列以进 行随机接入。 例如, 接入单元 1230可以根据计算的覆盖增强等级选择随机 接入前导序列,并使用与计算的覆盖增强等级相对应的 PRACH资源集合发 送随机接入前导序列。 备选地, 接入单元 1230可以从用于非竞争随机接入 的前导序列中随机选择前导序列,并且重用该前导序列所对应的 PRACH资 源集合。 通过本申请提出的服务小区的 MTC 用户设备的随机接入过程信息的 发送和接收机制, 实现了一种允许基站发送服务小区的随机接入过程信息 以及允许 MTC用户设备选择对应的 PRACH资源实施随机接入的机制。 采 用本申请提出的技术方案, 能够提高 LTE支持 MTC用户设备的的资源利 用率并改善频谱 /能量效率, 减少小区间的时间 /频率资源冲突。
应该理解, 本发明的上述实施例可以通过软件、 硬件或者软件和硬件 两者的结合来实现。 例如, 上述实施例中的基站和用户设备内部的各种组 件可以通过多种器件来实现, 这些器件包括但不限于: 模拟电路器件、 数 字电路器件、 数字信号处理 (DSP) 电路、 可编程处理器、 专用集成电路 (ASIC), 现场可编程门阵列 (FPGA)、 可编程逻辑器件 (CPLD), 等等。
在本申请中, "基站"是指具有较大发射功率和较广覆盖面积的移动通 信数据和控制交换中心, 包括资源分配调度、 数据接收发送等功能。 "用户 设备"是指用户移动终端, 例如包括移动电话、 笔记本等可以与基站或者 微基站进行无线通信的终端设备。 此外, 这里所公开的本发明的实施例可以在计算机程序产品上实现。 更具体地, 该计算机程序产品是如下的一种产品: 具有计算机可读介质, 计算机可读介质上编码有计算机程序逻辑, 当在计算设备上执行时, 该计 算机程序逻辑提供相关的操作以实现本发明的上述技术方案。 当在计算系 统的至少一个处理器上执行时, 计算机程序逻辑使得处理器执行本发明实 施例所述的操作(方法)。 本发明的这种设置典型地提供为设置或编码在例 如光介质(例如 CD-ROM)、 软盘或硬盘等的计算机可读介质上的软件、代 码和 /或其他数据结构、 或者诸如一个或多个 ROM或 RAM或 PROM芯片 上的固件或微代码的其他介质、 或一个或多个模块中的可下载的软件图像、 共享数据库等。 软件或固件或这种配置可安装在计算设备上, 以使得计算 设备中的一个或多个处理器执行本发明实施例所描述的技术方案。
尽管以上已经结合本发明的优选实施例示出了本发明, 但是本领域的 技术人员将会理解, 在不脱离本发明的精神和范围的情况下, 可以对本发 明进行各种修改、 替换和改变。 因此, 本发明不应由上述实施例来限定, 而应由所附权利要求及其等价物来限定。

Claims

权 利 要 求
1. 一种由基站执行的方法, 包括:
产生和发送针对用户设备的物理随机接入信道 PRACH配置参数; 检测用户设备发送的随机前导序列和 /或对应的 PRACH资源集合, 以 确定针对用户设备的类型和 /或覆盖增强等级; 以及
基于用户设备的类型和 /或覆盖增强等级, 产生随机接入响应。
2. 根据权利要求 1所述的方法, 其中, 通过物理层广播信道在一个服 务小区中广播用户设备的 PRACH配置参数。
3. 根据权利要求 1所述的方法, 其中, 根据 PRACH-ConfigSIB规范在 系统信息中发送用户设备的 PRACH配置参数,或根据 PRACH-Config规范 在移动性控制信息中发送用户设备的 PRACH配置参数。
4. 根据权利要求 1所述的方法, 其中, 通过系统信息块 SIB或者层 2/ 层 3消息发送用户设备的 PRACH配置参数。
5. 根据权利要求 1所述的方法, 其中, 所述 PRACH配置参数包括以 下一项或更多项: PRACH前导序列基本参数、 随机接入方式、 小区的覆盖 增强等级配置、处于不同覆盖增强等级的用户设备所需的 PRACH资源集合 的持续时间周期、 PRACH资源集合内的 PRACH基本单元的配置、 以及用 户设备用于检测随机接入响应 RAR的时间窗。
6. 根据权利要求 1所述的方法,其中,从预先定义和 /或配置的 PRACH 资源中检测用户设备发送的随机接入前导序列, 以确定该用户设备的类型 和 /或确定针对该用户设备的覆盖增强等级,其中, PRACH资源集合与用户 设备的覆盖增强等级具有一一对应关系。
7. 根据权利要求 1所述的方法, 其中, 检测用户设备的随机前导序列 签名以确定针对用户设备的类型和 /或覆盖增强等级, 其中, 用户设备的随 机前导序列签名与用户设备的覆盖增强等级具有对应关系。
8. 根据权利要求 1所述的方法, 其中, 所述随机接入响应包括以下一 项或更多项: 上行链路同歩时间调整、 小区无线临时标识、 以及层 2/层 3 上行链路消息准予。
9. 一种由用户设备执行的方法, 包括: 接收物理随机接入信道 PRACH配置参数;
计算用户设备所处的覆盖增强等级; 以及
选择相应的 PRACH资源集合和随机接入前导序列以进行随机接入。
10. 根据权利要求 9所述的方法, 其中, 用户设备从 PRACH配置参数 中获取覆盖增强等级与路径损耗或用户测量或者上次成功接入的覆盖增强 等级之间的一一对应关系, 并且基于路径损耗或用户测量或者上次成功接 入的覆盖增强等级来计算用户设备所处的覆盖增强等级。
11. 根据权利要求 9所述的方法, 其中, 用户设备根据计算的覆盖增强 等级选择随机接入前导序列, 并使用与计算的覆盖增强等级相对应的 PRACH资源集合发送随机接入前导序列。
12. 根据权利要求 9所述的方法, 其中, 用户设备从用于非竞争随机接 入的前导序列中随机选择前导序列, 并且重用该前导序列所对应的 PRACH 资源集合。
13. 根据权利要求 9所述的方法, 其中, 用户设备采用现有的全部或部 分 PRACH前导序列并且使用独立的 PRACH资源集合, 其中, 用户设备的 PRACH资源集合不与现有的 PRACH资源、 现有的参考信号和现有的其他 信道相冲突。
14. 根据权利要求 9所述的方法, 其中, 所述 PRACH资源集合包括 N 个 PRACH基本单元, 其中 N是正整数。
15. 根据权利要求 14所述的方法,其中, PRACH基本单元采取跳频发 送的方式。
16. 根据权利要求 14所述的方法,其中, PRACH基本单元的频域位置 是固定的。
17. 根据权利要求 14所述的方法,其中,用于用户设备的多个 PRACH 资源集合的持续时间周期彼此相同。
18. 根据权利要求 14所述的方法,其中,用于用户设备的多个 PRACH 资源集合的持续时间周期彼此不同。
19. 根据权利要求 14所述的方法,其中,用于用户设备的多个 PRACH 资源集合采取嵌套格式。
20. 一种基站, 包括:
参数产生单元, 被配置为产生和发送针对用户设备的物理随机接入信 道 PRACH配置参数;
检测单元, 被配置为检测用户设备发送的随机前导序列和 /或对应的 PRACH资源集合, 以确定针对用户设备的类型和 /或覆盖增强等级; 以及 响应单元, 被配置为基于用户设备的类型和 /或覆盖增强等级, 产生随 机接入响应。
21. 根据权利要求 20所述的基站, 其中, 参数产生单元被配置为: 通 过物理层广播信道在一个服务小区中广播用户设备的 PRACH配置参数。
22. 根据权利要求 20所述的基站, 其中, 参数产生单元被配置为: 根 据 PRACH-ConfigSIB规范在系统信息中发送用户设备的 PRACH配置参数, 或根据 PRACH-Config规范在移动性控制信息中发送用户设备的 PRACH配 置参数。
23. 根据权利要求 20所述的基站, 其中, 参数产生单元被配置为: 通 过系统信息块 SIB或者层 2/层 3消息发送用户设备的 PRACH配置参数。
24. 根据权利要求 20所述的基站, 其中, 所述 PRACH配置参数包括 以下一项或更多项: PRACH前导序列基本参数、 随机接入方式、 小区的覆 盖增强等级配置、处于不同覆盖增强等级的用户设备所需的 PRACH资源集 合的持续时间周期、 PRACH资源集合内的 PRACH基本单元的配置、 以及 用户设备用于检测随机接入响应 RAR的时间窗。
25. 根据权利要求 20所述的基站, 其中, 检测单元被配置为: 从预先 定义和 /或配置的 PRACH资源中检测用户设备发送的随机接入前导序列, 以确定该用户设备的类型和 /或确定针对该用户设备的覆盖增强等级,其中, PRACH资源集合与用户设备的覆盖增强等级具有一一对应关系。
26. 根据权利要求 20所述的基站, 其中, 检测单元被配置为: 检测用 户设备的随机前导序列签名以确定针对用户设备的类型和 /或覆盖增强等 级, 其中, 用户设备的随机前导序列签名与用户设备的覆盖增强等级具有 对应关系。
27. 一种用户设备, 包括:
参数接收单元, 被配置为接收物理随机接入信道 PRACH配置参数; 计算单元, 被配置为计算用户设备所处的覆盖增强等级; 以及 接入单元,被配置为选择相应的 PRACH资源集合和随机接入前导序列 以进行随机接入。
28. 根据权利要求 27所述的用户设备, 其中, 计算单元被配置为: 从 PRACH配置参数中获取覆盖增强等级与路径损耗之间的一一对应关系, 并 且基于路径损耗来计算用户设备所处的覆盖增强等级。
29. 根据权利要求 27所述的用户设备, 其中, 接入单元被配置为: 根 据计算的覆盖增强等级选择随机接入前导序列, 并使用与计算的覆盖增强 等级相对应的 PRACH资源集合发送随机接入前导序列。
30. 根据权利要求 27所述的用户设备, 其中, 接入单元被配置为: 从 用于非竞争随机接入的前导序列中随机选择前导序列, 并且重用该前导序 列所对应的 PRACH资源集合。
PCT/CN2014/080826 2013-06-27 2014-06-26 物理随机接入信道的发送和接收方法以及基站和用户设备 WO2014206311A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016522225A JP2016526836A (ja) 2013-06-27 2014-06-26 物理ランダムアクセスチャネルの送信および受信方法、並びに基地局およびユーザ機器
US14/901,190 US10182457B2 (en) 2013-06-27 2014-06-26 Methods for transmitting and receiving physical random access channel (PRACH), base station and user equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310261358.5A CN104254135B (zh) 2013-06-27 2013-06-27 基站和用户设备及其方法
CN201310261358.5 2013-06-27

Publications (1)

Publication Number Publication Date
WO2014206311A1 true WO2014206311A1 (zh) 2014-12-31

Family

ID=52141088

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/080826 WO2014206311A1 (zh) 2013-06-27 2014-06-26 物理随机接入信道的发送和接收方法以及基站和用户设备

Country Status (4)

Country Link
US (1) US10182457B2 (zh)
JP (1) JP2016526836A (zh)
CN (1) CN104254135B (zh)
WO (1) WO2014206311A1 (zh)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016120419A3 (en) * 2015-01-30 2016-09-22 Nokia Solutions And Networks Oy Paging enhancement for low complexity user equipment and/or user equipment in coverage enhancement mode
WO2016163508A1 (ja) * 2015-04-09 2016-10-13 株式会社Nttドコモ ユーザ端末、無線基地局及び無線通信方法
WO2016171445A1 (en) * 2015-04-19 2016-10-27 Lg Electronics Inc. Method and apparatus for changing a coverage enhancement mode
WO2016183717A1 (zh) * 2015-05-15 2016-11-24 华为技术有限公司 传输公共消息的方法和相关设备
WO2016197474A1 (zh) * 2015-06-10 2016-12-15 中兴通讯股份有限公司 一种prach接入控制方法、接入方法及装置
JP2017506479A (ja) * 2014-02-10 2017-03-02 華為技術有限公司Huawei Technologies Co.,Ltd. Prachリソースを構成するための方法、リソース構成を取得するための方法、基地局、およびユーザ機器
JP6093827B1 (ja) * 2015-09-24 2017-03-08 株式会社Nttドコモ ユーザ端末、無線基地局及び無線通信方法
CN107113877A (zh) * 2015-01-08 2017-08-29 夏普株式会社 终端装置、基站装置、无线通信方法及集成电路
WO2017150863A1 (en) * 2016-02-29 2017-09-08 Samsung Electronics Co., Ltd. Apparatus and method for signaling system information
KR20170137051A (ko) * 2015-04-09 2017-12-12 인텔 아이피 코포레이션 향상된 커버리지 지원을 위한 랜덤 액세스 절차
KR20170137751A (ko) * 2015-04-14 2017-12-13 퀄컴 인코포레이티드 저 레이턴시 무선 통신을 위한 랜덤 액세스
JP2018526878A (ja) * 2015-07-23 2018-09-13 クゥアルコム・インコーポレイテッドQualcomm Incorporated 拡張マシンタイプ通信のための半持続性スケジューリング(semi−persistent scheduling)
EP3335474A4 (en) * 2015-08-11 2019-03-13 Nokia Technologies OY CONNECTED MODE MOBILITY FOR ENHANCED COVER USER EQUIPMENT
CN109475010A (zh) * 2017-09-08 2019-03-15 华为技术有限公司 信息传输的方法和装置
CN110301155A (zh) * 2017-02-02 2019-10-01 三星电子株式会社 用于发送和接收系统信息的方法和装置
EP3691396A1 (en) * 2015-11-05 2020-08-05 Nec Corporation Base station, radio terminal, and methods therein
CN112867168A (zh) * 2019-11-27 2021-05-28 中国移动通信集团陕西有限公司 窄带物联网高并发接入方法、装置、计算设备及存储介质

Families Citing this family (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015016962A1 (en) * 2013-08-01 2015-02-05 Fujitsu Limited Terminal-to-terminal communication
WO2015071025A1 (en) * 2013-11-14 2015-05-21 Sony Corporation Communications system, infrastructure equipment, communications devices and method
CN104780617B (zh) * 2014-01-09 2019-09-17 中兴通讯股份有限公司 一种非竞争随机接入方法、节点设备及系统
EP3413642B1 (en) * 2014-01-28 2021-06-16 Huawei Technologies Co., Ltd. Method for determining transmit power in coverage enhancement scenario and device
WO2015191347A1 (en) * 2014-06-13 2015-12-17 Apple Inc. Enhanced prach scheme for power savings, range improvement and improved detection
US10805957B2 (en) * 2014-09-23 2020-10-13 Lg Electronics Inc. Method and apparatus for performing initial acccess procedure for low cost user equipment in wireless communication system
GB2530566A (en) * 2014-09-26 2016-03-30 Nec Corp Communication system
CN105992328B (zh) * 2015-01-30 2019-07-09 华为技术有限公司 一种前导序列的发送方法及装置
CN107534990B (zh) * 2015-02-12 2020-09-11 瑞典爱立信有限公司 用于mtc的系统信息的选择性分发
CN107211460A (zh) * 2015-02-13 2017-09-26 瑞典爱立信有限公司 随机接入的方法和设备
WO2016138651A1 (zh) * 2015-03-04 2016-09-09 华为技术有限公司 一种设置终端的覆盖等级的方法及装置
WO2016149920A1 (zh) * 2015-03-25 2016-09-29 华为技术有限公司 一种终端设备、网络设备,以及寻呼消息的传输方法
CN107431901B (zh) * 2015-03-26 2021-06-04 索尼公司 在蜂窝网络的无线电接口上分配资源的设备和方法
CN106162562B (zh) * 2015-03-30 2020-05-26 联想(北京)有限公司 一种信息处理方法及基站
EP3474604B1 (en) * 2015-04-17 2020-09-09 Panasonic Intellectual Property Corporation of America Coverage enhancement level signalling and efficient packing of mtc system information
KR102357511B1 (ko) * 2015-05-21 2022-02-04 삼성전자주식회사 무선 통신 시스템에서 복수의 디바이스들을 위한 랜덤 액세스 방법 및 장치
WO2016187856A1 (zh) * 2015-05-28 2016-12-01 华为技术有限公司 一种寻呼方法及基站、核心网设备、用户设备
CN107113792B (zh) 2015-06-23 2020-01-03 华为技术有限公司 一种控制信息的发送方法、检测方法、基站和用户设备
US10080243B2 (en) 2015-07-17 2018-09-18 Apple Inc. Mechanisms to facilitate random access by link-budget-limited devices
CN106454995B (zh) * 2015-08-10 2021-06-04 上海诺基亚贝尔股份有限公司 用于配置中继发现消息传输资源的方法、相应的中继终端设备和远程终端设备
CN106470468B (zh) * 2015-08-14 2020-08-07 电信科学技术研究院 一种随机接入响应的传输方法及装置
CN105101454B (zh) * 2015-08-14 2019-02-01 电信科学技术研究院 一种mtc ue随机接入的方法及装置
US10143013B2 (en) * 2015-10-02 2018-11-27 Sony Mobile Communications Inc. Apparatus, systems and methods for user equipment (UE) coverage enhancement level definition, selection and allocation
CN107113804A (zh) * 2015-10-26 2017-08-29 华为技术有限公司 控制信息传输方法、设备和系统
CN116709562A (zh) * 2016-01-13 2023-09-05 中兴通讯股份有限公司 一种随机接入方法及装置
US10536977B1 (en) * 2016-01-22 2020-01-14 Sprint Spectrum L.P. Contention based random access
CN107041014A (zh) * 2016-02-03 2017-08-11 中国移动通信集团公司 一种随机接入方法、基站和终端
CN108605355B (zh) * 2016-02-26 2022-06-24 苹果公司 用于5g/lte顺应的可穿戴用户设备装置的物理层协议和自包含子帧结构
US10117274B2 (en) * 2016-03-10 2018-10-30 Lg Electronics Inc. Method for performing operation related to radio link failure in wireless communication system and apparatus for supporting the same
CN105848277B (zh) * 2016-03-17 2019-03-08 深圳大学 一种基于广播信道的分布式天线能量效率优化方法及系统
US10143015B2 (en) * 2016-03-18 2018-11-27 Qualcomm Incorporated Contention-based random access in unlicensed spectrum
CN108781469B (zh) * 2016-03-31 2022-07-01 株式会社Ntt都科摩 用户装置以及通信方法
CN105898686B (zh) * 2016-06-12 2019-09-24 成都信息工程大学 一种无线链路失败恢复的方法及用户设备
WO2017222327A1 (ko) * 2016-06-22 2017-12-28 엘지전자 주식회사 랜덤 액세스를 수행하는 방법 및 그 방법을 수행하는 단말
WO2018006250A1 (zh) * 2016-07-04 2018-01-11 华为技术有限公司 覆盖增强ce功能的实现方法及设备
WO2018018472A1 (en) * 2016-07-27 2018-02-01 Lenovo Innovations Limited (Hong Kong) Preamble based access for an uplink transmission
EP3494714B1 (en) 2016-08-05 2022-01-26 Nokia Technologies Oy Power class based coverage enhancement level selection
CN107690201B (zh) * 2016-08-05 2020-05-15 电信科学技术研究院 一种进行随机接入的方法和设备
WO2018027985A1 (zh) * 2016-08-12 2018-02-15 华为技术有限公司 无线宽带终端设备的上行数据传输方法和装置
CN107734714B (zh) 2016-08-12 2023-04-18 中兴通讯股份有限公司 无线通信系统中的随机接入方法和装置、用户终端
CN112040531A (zh) * 2016-08-12 2020-12-04 中兴通讯股份有限公司 接入控制方法及装置、系统
WO2018049654A1 (zh) * 2016-09-18 2018-03-22 富士通株式会社 上行传输配置的配置和获取方法、装置以及通信系统
US10291451B2 (en) 2016-11-07 2019-05-14 Qualcomm Incorporated PRACH design for larger cell radius
EP3337244A1 (en) * 2016-12-19 2018-06-20 Gemalto M2M GmbH Method for data transmission in a cellular network with reconfigurable radio frame structure settings
MX2019008092A (es) * 2017-01-05 2019-09-04 Guangdong Oppo Mobile Telecommunications Corp Ltd Metodo para acceso aleatorio y dispositivo terminal.
WO2018143877A1 (en) * 2017-02-03 2018-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Systems and methods for identifying ce level mismatch
CN108401265B (zh) * 2017-02-08 2021-08-17 知鑫知识产权服务(上海)有限公司 一种用于机器对机器通信的随机接入控制方法
KR102625779B1 (ko) * 2017-02-09 2024-01-17 한국전자통신연구원 협대역 물리 랜덤 액세스 채널 검출 방법 및 장치
KR102319838B1 (ko) * 2017-03-08 2021-11-01 삼성전자 주식회사 대규모 접속을 고려한 랜덤 액세스를 위한 장치 및 방법
EP3592092B1 (en) 2017-03-23 2021-10-20 Huawei Technologies Co., Ltd. Random access method and device
BR112019021887A2 (pt) * 2017-04-19 2020-05-26 Huawei Technologies Co., Ltd. Método de identificação de modo de cobertura e aparelho
CN108738141B (zh) * 2017-04-21 2020-04-17 中国移动通信有限公司研究院 一种物理随机接入信道参数的配置方法、网络侧设备及终端
CN109246791A (zh) * 2017-04-28 2019-01-18 夏普株式会社 用户设备、基站和相关方法
WO2018200779A1 (en) * 2017-04-28 2018-11-01 Sharp Laboratories Of America, Inc. Random access procedure(s) for radio system
US10820225B2 (en) * 2017-05-05 2020-10-27 Motorola Mobility Llc Method and apparatus for transmitting a RACH preamble on a wireless network
CN108934023B (zh) * 2017-05-26 2022-03-11 中兴通讯股份有限公司 一种覆盖等级的确定、基站及终端
WO2018234851A1 (en) * 2017-06-21 2018-12-27 Telefonaktiebolaget Lm Ericsson (Publ) RANDOM ACCESS PROCEDURE FOR MASSIVE MTC DEVICES
BR112020002784A2 (pt) * 2017-08-10 2020-07-28 Huawei Technologies Co., Ltd. método e dispositivo de envio de sinais e método e dispositivo de recepção de sinais
CN109392071B (zh) 2017-08-11 2021-06-08 中兴通讯股份有限公司 一种功率控制的方法及装置
CN109413756B (zh) * 2017-08-18 2020-11-03 维沃移动通信有限公司 一种随机接入方法及装置
CN110022610A (zh) * 2018-01-10 2019-07-16 维沃移动通信有限公司 一种收发信息的方法、终端设备及网络设备
CN110225598A (zh) * 2018-03-01 2019-09-10 中兴通讯股份有限公司 随机接入方法、装置及设备、计算机可读存储介质
CN110351833B (zh) * 2018-04-02 2024-02-20 夏普株式会社 用户设备执行的方法、基站执行的方法、用户设备和基站
US11596002B2 (en) 2018-05-11 2023-02-28 Zte Corporation Method, device, apparatus for selecting a random access resource, and storage medium
CN112823562A (zh) * 2018-09-27 2021-05-18 联想(北京)有限公司 用于网络优化的ue信息传输的方法和装置
WO2020063522A1 (zh) * 2018-09-28 2020-04-02 华为技术有限公司 一种物理随机接入信道prach资源的处理方法及装置
CN110972328B (zh) 2018-09-28 2024-02-09 华为技术有限公司 一种物理随机接入信道prach资源的处理方法及装置
CN109275157B (zh) * 2018-11-28 2021-08-17 中国联合网络通信集团有限公司 一种基站的nprach的配置参数优化方法和装置
WO2020167202A2 (en) * 2019-02-14 2020-08-20 Telefonaktiebolaget Lm Ericsson (Publ) Random access procedure
CN112118634B (zh) * 2019-06-20 2023-03-28 中国电信股份有限公司 通信方法、装置、系统以及基站和终端
US11576214B2 (en) * 2020-03-25 2023-02-07 Samsung Electronics Co., Ltd. Method and apparatus for enhanced PRACH preamble
JP2024516887A (ja) * 2021-05-10 2024-04-17 北京小米移動軟件有限公司 リソース設定方法、装置、通信デバイス及び記憶媒体
US11997629B2 (en) * 2021-05-11 2024-05-28 Qualcomm Incorporated Timing offset selection in non-terrestrial network
CN113507748B (zh) * 2021-07-09 2022-08-23 上海擎昆信息科技有限公司 一种随机接入响应的发送、接收和传输方法
WO2023014141A1 (ko) * 2021-08-05 2023-02-09 엘지전자 주식회사 무선 통신 시스템에서 랜덤 액세스 방법 및 장치
CN115442196B (zh) * 2022-08-24 2024-05-28 成都中科微信息技术研究院有限公司 一种增强NR PRACH_format_0覆盖能力的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101998585A (zh) * 2009-02-26 2011-03-30 华为技术有限公司 传输消息的方法、设备及系统
CN102422568A (zh) * 2009-04-30 2012-04-18 三星电子株式会社 用于无线通信系统的特定随机接入信道信息传送方法和装置
CN102523626A (zh) * 2011-12-02 2012-06-27 电信科学技术研究院 message3的传输方法和设备
CN102740407A (zh) * 2011-04-11 2012-10-17 中兴通讯股份有限公司 上行调度方法及系统、终端及基站

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101226819B1 (ko) * 2006-08-21 2013-01-25 삼성전자주식회사 광대역 무선 통신 시스템에서 역방향 접근채널의 프리앰블송수신 방법 및 장치
JP2010522471A (ja) * 2007-03-20 2010-07-01 アルカテル−ルーセント ユーエスエー インコーポレーテッド 無線通信システムにおける距離範囲拡大のための構成可能なランダム・アクセス・チャネル構造
KR101388351B1 (ko) * 2007-06-19 2014-04-22 엘지전자 주식회사 제어 정보를 이용하여, 빠르게 랜덤 액세스 프리앰블의전송을 재시도 하는 방법
KR101430462B1 (ko) * 2007-08-09 2014-08-19 엘지전자 주식회사 Rach 프리엠블 구성방법 및 전송방법
US9225414B2 (en) * 2008-12-31 2015-12-29 Intellectual Discovery Co., Ltd. Transmission device and method using space-frequency transmission diversity
WO2010087569A1 (en) * 2009-02-02 2010-08-05 Lg Electronics Inc. Determination of user equipment antenna capability
KR101691344B1 (ko) * 2009-04-23 2016-12-29 인터디지탈 패튼 홀딩스, 인크 멀티캐리어 무선 통신에서의 임의 접속을 위한 방법 및 장치
EP2367393B8 (en) * 2010-03-12 2015-12-30 BlackBerry Limited Communication Station and Method for Transmitting Additional Information on an Enhanced Random Access Channel
KR20120041932A (ko) * 2010-10-22 2012-05-03 한국전자통신연구원 랜덤 액세스 자원 할당을 위한 기지국의 통신 방법 및 랜덤 액세스 자원 할당을 이용한 단말의 통신 방법 및 그 장치
EP2745578B1 (en) * 2011-08-15 2017-12-27 Telefonaktiebolaget LM Ericsson (publ) A method and an apparatus in a user equipment for controlling transmission power of the user equipment
US9419740B2 (en) * 2011-11-04 2016-08-16 Blackberry Limited Access procedures for in-device coexistence interference avoidance
CN103313419A (zh) * 2012-03-09 2013-09-18 上海贝尔股份有限公司 一种随机接入方法及装置
CN104186010B (zh) * 2012-03-16 2018-09-21 交互数字专利控股公司 无线系统中的随机接入过程
WO2014003436A1 (en) * 2012-06-27 2014-01-03 Lg Electronics Inc. Method and apparatus for performing random access procedure in wireless communication system
EP2883408B1 (en) * 2012-08-10 2017-04-19 Telefonaktiebolaget LM Ericsson (publ) Methods and apparatuses for handling connection setups in a telecommunications system
EP2904850A1 (en) * 2012-10-05 2015-08-12 Interdigital Patent Holdings, Inc. Method and apparatus for enhancing coverage of machine type communication (mtc) devices
PT3761746T (pt) * 2012-11-02 2022-10-03 Huawei Tech Co Ltd Método, estação de base e equipamento de utilizador para determinação de perda de canal
EP2946628A1 (en) * 2013-01-17 2015-11-25 Telefonaktiebolaget L M Ericsson (publ) Dynamic random access resource size configuration and selection
WO2014204285A1 (en) * 2013-06-21 2014-12-24 Lg Electronics Inc. A method for enhancing coverage of user equipment and an apparatus using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101998585A (zh) * 2009-02-26 2011-03-30 华为技术有限公司 传输消息的方法、设备及系统
CN102422568A (zh) * 2009-04-30 2012-04-18 三星电子株式会社 用于无线通信系统的特定随机接入信道信息传送方法和装置
CN102740407A (zh) * 2011-04-11 2012-10-17 中兴通讯股份有限公司 上行调度方法及系统、终端及基站
CN102523626A (zh) * 2011-12-02 2012-06-27 电信科学技术研究院 message3的传输方法和设备

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017506479A (ja) * 2014-02-10 2017-03-02 華為技術有限公司Huawei Technologies Co.,Ltd. Prachリソースを構成するための方法、リソース構成を取得するための方法、基地局、およびユーザ機器
US10555347B2 (en) 2014-02-10 2020-02-04 Huawei Technologies Co., Inc. Method for configuring PRACH resource, method for acquiring resource configuration, base station, and user equipment
CN107113877A (zh) * 2015-01-08 2017-08-29 夏普株式会社 终端装置、基站装置、无线通信方法及集成电路
WO2016120419A3 (en) * 2015-01-30 2016-09-22 Nokia Solutions And Networks Oy Paging enhancement for low complexity user equipment and/or user equipment in coverage enhancement mode
KR20170137051A (ko) * 2015-04-09 2017-12-12 인텔 아이피 코포레이션 향상된 커버리지 지원을 위한 랜덤 액세스 절차
WO2016163508A1 (ja) * 2015-04-09 2016-10-13 株式会社Nttドコモ ユーザ端末、無線基地局及び無線通信方法
US10849163B2 (en) 2015-04-09 2020-11-24 Apple Inc. Random access procedure for enhanced coverage support
KR102159426B1 (ko) 2015-04-09 2020-09-23 애플 인크. 향상된 커버리지 지원을 위한 랜덤 액세스 절차
JP2018514097A (ja) * 2015-04-09 2018-05-31 インテル アイピー コーポレーション 拡張カバレッジサポートのためのランダムアクセスプロシージャ
JPWO2016163508A1 (ja) * 2015-04-09 2018-03-01 株式会社Nttドコモ ユーザ端末、無線基地局及び無線通信方法
KR102115647B1 (ko) * 2015-04-14 2020-05-26 퀄컴 인코포레이티드 저 레이턴시 무선 통신을 위한 랜덤 액세스
US11191106B2 (en) 2015-04-14 2021-11-30 Qualcomm Incorporated Random access for low latency wireless communications
KR20170137751A (ko) * 2015-04-14 2017-12-13 퀄컴 인코포레이티드 저 레이턴시 무선 통신을 위한 랜덤 액세스
WO2016171445A1 (en) * 2015-04-19 2016-10-27 Lg Electronics Inc. Method and apparatus for changing a coverage enhancement mode
US10595331B2 (en) 2015-05-15 2020-03-17 Huawei Technologies Co., Ltd. Method for transmitting common message and related device
WO2016183717A1 (zh) * 2015-05-15 2016-11-24 华为技术有限公司 传输公共消息的方法和相关设备
WO2016197474A1 (zh) * 2015-06-10 2016-12-15 中兴通讯股份有限公司 一种prach接入控制方法、接入方法及装置
US10624123B2 (en) 2015-06-10 2020-04-14 Zte Corporation PRACH access control method, and access method and device
JP2018526878A (ja) * 2015-07-23 2018-09-13 クゥアルコム・インコーポレイテッドQualcomm Incorporated 拡張マシンタイプ通信のための半持続性スケジューリング(semi−persistent scheduling)
EP3335474A4 (en) * 2015-08-11 2019-03-13 Nokia Technologies OY CONNECTED MODE MOBILITY FOR ENHANCED COVER USER EQUIPMENT
CN108141878B (zh) * 2015-09-24 2022-11-29 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
US11595997B2 (en) 2015-09-24 2023-02-28 Ntt Docomo, Inc. User terminal, radio base station and radio communication method
EP3352520A4 (en) * 2015-09-24 2018-09-19 NTT DoCoMo, Inc. User terminal, radio base station, and radio communication method
JP6093827B1 (ja) * 2015-09-24 2017-03-08 株式会社Nttドコモ ユーザ端末、無線基地局及び無線通信方法
CN108141878A (zh) * 2015-09-24 2018-06-08 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
WO2017051847A1 (ja) * 2015-09-24 2017-03-30 株式会社Nttドコモ ユーザ端末、無線基地局及び無線通信方法
JP2017063323A (ja) * 2015-09-24 2017-03-30 株式会社Nttドコモ ユーザ端末、無線基地局及び無線通信方法
EP3691396A1 (en) * 2015-11-05 2020-08-05 Nec Corporation Base station, radio terminal, and methods therein
CN108605268A (zh) * 2016-02-29 2018-09-28 三星电子株式会社 用于发信号通知系统信息的设备和方法
US10531496B2 (en) 2016-02-29 2020-01-07 Samsung Electronics Co., Ltd. Apparatus and method for signaling system information
US10455621B2 (en) 2016-02-29 2019-10-22 Samsung Electronics Co., Ltd. Apparatus and method for signaling system information
CN108605268B (zh) * 2016-02-29 2021-05-14 三星电子株式会社 用于发信号通知系统信息的设备和方法
US11219069B2 (en) 2016-02-29 2022-01-04 Samsung Electronics Co., Ltd. Apparatus and method for signaling system information
WO2017150863A1 (en) * 2016-02-29 2017-09-08 Samsung Electronics Co., Ltd. Apparatus and method for signaling system information
US11924883B2 (en) 2016-02-29 2024-03-05 Samsung Electronics Co., Ltd. Apparatus and method for signaling system information
CN110301155A (zh) * 2017-02-02 2019-10-01 三星电子株式会社 用于发送和接收系统信息的方法和装置
CN109475010A (zh) * 2017-09-08 2019-03-15 华为技术有限公司 信息传输的方法和装置
CN112867168A (zh) * 2019-11-27 2021-05-28 中国移动通信集团陕西有限公司 窄带物联网高并发接入方法、装置、计算设备及存储介质
CN112867168B (zh) * 2019-11-27 2024-03-22 中国移动通信集团陕西有限公司 窄带物联网高并发接入方法、装置、计算设备及存储介质

Also Published As

Publication number Publication date
CN104254135A (zh) 2014-12-31
CN104254135B (zh) 2020-03-31
US10182457B2 (en) 2019-01-15
JP2016526836A (ja) 2016-09-05
US20160150570A1 (en) 2016-05-26

Similar Documents

Publication Publication Date Title
WO2014206311A1 (zh) 物理随机接入信道的发送和接收方法以及基站和用户设备
EP3506708B1 (en) Method and apparatus for transmitting data in rrc deactivated state
CN110049557B (zh) 随机接入方法及装置
CN110431892B (zh) 取决于参数集的随机接入时序
US11219061B2 (en) Listen-before-talk (LBT) modes for random access procedures
US20150326373A1 (en) Apparatus and method for avoiding interference in device-to-device wireless communication system
KR101819398B1 (ko) Lte 네트워크에서 근접성 서비스 및 d2d 발견을 위한 시그널링
TW201937975A (zh) 用於由使用者裝備進行的波束故障恢復請求的系統和方法
WO2015103952A1 (zh) 物理信道配置方法以及基站和用户设备
CN110999506A (zh) 未许可频谱中的rach过程
JP2018535611A (ja) 共有通信媒体上のランダムアクセスチャネルパラメータのシグナリング
AU2017237734A1 (en) Improvements on co-channel sidelink LTE V2V and DSRC communication
JP2017532897A (ja) アンライセンスバンドでのlteライセンス補助アクセス(laa)における同期
EP2294887A1 (en) Determining preamble sequences for random access
TW202014038A (zh) 判斷對話前監聽和通道存取優先級等級之方法及使用者設備
EP2979508A1 (en) Method and apparatus of performing a discovery procedure
TWI729343B (zh) 用於多波束操作中針對多個前序信號傳輸的隨機存取回應(rar)監測的方法及裝置
US20210058976A1 (en) Random access channel access and validity procedures
US20220225407A1 (en) Methods, ue and network node for handling a bandwidth part configuration
CN113303018A (zh) 用于无需许可信道上的随机接入的技术
CN114503745A (zh) 用于随机接入过程的方法和装置
US20220338273A1 (en) Methods, ue and network node for handling prach configurations
JP2022102124A (ja) 端末装置、基地局装置、および、通信方法
JP2022102123A (ja) 端末装置、基地局装置、および、通信方法
KR20220004160A (ko) 비면허 스펙트럼에서 셀룰러 통신 네트워크에 액세스하기 위한 방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14817221

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2016522225

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 14901190

Country of ref document: US

122 Ep: pct application non-entry in european phase

Ref document number: 14817221

Country of ref document: EP

Kind code of ref document: A1