WO2013069850A1 - Décalage cyclique amélioré pour dispositifs statiques - Google Patents

Décalage cyclique amélioré pour dispositifs statiques Download PDF

Info

Publication number
WO2013069850A1
WO2013069850A1 PCT/KR2012/001580 KR2012001580W WO2013069850A1 WO 2013069850 A1 WO2013069850 A1 WO 2013069850A1 KR 2012001580 W KR2012001580 W KR 2012001580W WO 2013069850 A1 WO2013069850 A1 WO 2013069850A1
Authority
WO
WIPO (PCT)
Prior art keywords
mode
cyclic shift
high speed
value
random access
Prior art date
Application number
PCT/KR2012/001580
Other languages
English (en)
Inventor
Dragan Vujcic
Original Assignee
Lg Electronics Inc.
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 Lg Electronics Inc. filed Critical Lg Electronics Inc.
Publication of WO2013069850A1 publication Critical patent/WO2013069850A1/fr

Links

Classifications

    • 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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Definitions

  • the present document is directed to a random access scheme to the network. More specifically, the present document is directed to an enhanced cyclic shift used for static device, such as M2M (Machine to Machine) communication device, to use at performing random access to the network.
  • M2M Machine to Machine
  • 3GPP LTE (3 rd generation partnership project) long term evolution: hereinafter called 'LTE') communication system is schematically described as a mobile communication system to which the present invention is applicable.
  • FIG. 1 is a schematic diagram of E-UMTS network structure as an example of a mobile communication system.
  • E-UMTS evolved universal mobile telecommunications system
  • UMTS universal mobile telecommunications system
  • its basic standardization is ongoing by 3 GPP.
  • the E-UMTS can be called LTE system.
  • E-UMTS network can be mainly divided into E-UTRAN (evolved-UMTS terrestrial radio access network) 101 and CN 102 (core network).
  • the E-UTRAN 101 consists of a user equipment (hereinafter abbreviated UE) 103, a base station (hereinafter named eNode B or eNB) 104, and an access gateway (hereinafter abbreviated AG) 105 located at an end point of the network to be externally connected to an external network.
  • the AG 105 can be divided into one part responsible for user traffic processing and the other part for processing control traffic. In this case, the AG for new user traffic processing and the AG for processing control traffic can communicate with each other using a new interface.
  • At least one cell can exist at one eNode B. Between eNode Bs, an interface for user or control traffic transmission is usable. And, the CN 102 can consist of a node for user registrations of the AG 105 and other UE 103. Moreover, an interface for discriminating the E-UTRAN 101 and the CN 102 is available.
  • Layers of a radio interface protocol between a user equipment and a network can be divided into LI (first layer), L2 (second layer) and L3 (third layer) based on three lower layers of the open system interconnection (OSI) reference model widely known in the field of communication systems.
  • a physical layer belonging to the first layer provides an information transfer service using a physical channel.
  • a radio resource control (hereinafter abbreviated RRC) located on the third layer plays a role in controlling radio resources between the user equipment and the network.
  • the RRC layers exchange RRC messages between the user equipment and the network.
  • the RRC layers can be distributed to network nodes including the eNode B 104, the AG 105 and the like.
  • the RRC layer can be provided to the eNode B 104 or the AG 105 only.
  • FIG. 2 and FIG. 3 are diagrams for structures of a radio interface protocol between a user equipment and UTRAN based on the 3GPP radio access network specifications.
  • a radio interface protocol horizontally consists of a physical layer, a data link layer and a network layer.
  • the radio interface protocol vertically consists of a user plane for data information transfer and a control plane for control signal delivery (signaling).
  • FIG. 2 shows the respective layers of the radio protocol control plane
  • FIG. 3 shows the respective layers of the radio protocol user plane.
  • the radio protocol layers shown in FIG. 2 and FIG. 3 can be divided into LI (first layer), L2 (second layer) and L3 (third layer) based on three lower layers of the open system interconnection (OSI) reference model widely known in the field of communication systems.
  • the respective layers of the radio protocol control plane shown in FIG. 2 and the respective layers of the radio protocol user plane shown in FIG. 3 are explained as follows.
  • a physical (PHY) layer of a first layer provides an upper layer with an information transfer service using a physical channel.
  • the physical (PHY) layer is connected to a medium access control (MAC) layer on an upper layer via a transport channel.
  • MAC medium access control
  • data is transported between the medium access control (MAC) layer and the physical (PHY) layer via the transport channel.
  • the transport channel can be classified into a dedicated transport channel or a common transport channel according to whether a channel is shared or not.
  • data are transported via the physical channel between different physical layers, i.e., between a physical layer of a transmitting side and a physical layer of a receiving side.
  • a medium access control (hereinafter abbreviated 'MAC') layer plays a role in mapping various logical channels to various transport channels. And, the MAC layer also plays a role as logical channel multiplexing in mapping several logical channels to one transport channel.
  • the MAC layer is connected to a radio link control (RLC) layer of an upper layer via a logical channel.
  • RLC radio link control
  • the logical channel can be mainly categorized into a control channel for transferring information of a control plane and a traffic channel for transferring information of a user plane according to a type of the transferred information.
  • a radio link control (hereinafter abbreviated RLC) of the second layer performs segmentation and concatenation on data received from an upper layer to play a role in adjusting a size of the data to be suitable for a lower layer to transfer the data to a radio section.
  • the RLC layer provides three kinds of RLC modes including a transparent mode (hereinafter abbreviated TM), an unacknowledged mode (hereinafter abbreviated UM) and an acknowledged mode (hereinafter abbreviated AM) to secure various kinds of QoS demanded by each radio bearer (hereinafter abbreviated RB).
  • TM transparent mode
  • UM unacknowledged mode
  • AM acknowledged mode
  • RB radio bearer
  • the AM RLC performs a retransmission function through automatic repeat and request (ARQ) for the reliable data transfer.
  • a packet data convergence protocol (hereinafter abbreviated PDCP) layer of the second layer performs a header compression function for reducing a size of an IP packet header containing relatively large and unnecessary control information to efficiently transmit such an IP packet as IPv4 and IPv6 in a radio section having a small bandwidth. This enables a header part of data to carry mandatory information only to play a role in increasing transmission efficiency of the radio section.
  • the PDCP layer performs a security function as well. This consists of ciphering for preventing data interception conducted by a third party and integrity protection for preventing data manipulation conducted by a third party.
  • a radio resource control (hereinafter abbreviated RRC) layer located at a most upper part of a third layer is defined in the control plane only and is responsible for controlling a logical channel, a transport channel and physical channels in association with configuration, reconfiguration and release of radio bearers (hereinafter abbreviated RBs).
  • the RB means a logical path provided by the first and second layers of the radio protocol for the data delivery between the user equipment and the UTRAN.
  • configuring an RB means to stipulate characteristics of radio protocol layers and channels required for providing a specific service and also means to configure detailed parameters and operational methods thereof.
  • the RB can be classified into a signaling RB (SRB) or a data RB DRB).
  • the SRB is used as a path for sending an RRC message in a control plane (C-plane) and the DRB is used as a path for transferring user data in a user plane (U-plane).
  • a downlink transport channel for transporting data to a user equipment from a network there is a broadcast channel (BCH) for transmitting system information and a downlink shared channel (SCH) for transmitting a user traffic or a control message.
  • BCH broadcast channel
  • SCH downlink shared channel
  • traffic of a broadcast service or a control message can be transmitted on downlink SCH or a separate downlink MCH (multicast channel).
  • RACH random access channel
  • SCH uplink shared channel
  • a downlink physical channel for transmitting information transferred on a downlink transport channel to a radio section between a network and a user equipment there is a physical broadcast channel for transferring information of BCH, a physical multicast channel (PMCH) for transmitting information of MCH, a physical downlink shared channel for transmitting information of PCH and downlink SCH or a physical downlink control (or called DL L1/L2 control channel) for transmitting control information provided by first and second layers.
  • PMCH physical multicast channel
  • PUSCH physical uplink shared channel
  • PRACH physical random access channel
  • PUCCH physical uplink control channel
  • An LTE User Equipment can only be scheduled for uplink transmission if its uplink transmission timing is synchronized.
  • the LTE Random Access CHannel (RACH) therefore plays a key role as an interface between non-synchronized UEs and the orthogonal transmission scheme of the LTE uplink radio access.
  • network determines whether the UEs within its cell are high speed devices. And, the network may signals the UEs to use a cyclic shift in restricted mode when it determines that the UEs in its cell are high speed devices.
  • a static device in its nature, such as M2M device, within the cell where the network determines as high speed cell.
  • the present invention is directed to an enhanced cyclic shift used for static device, such as M2M (Machine to Machine) communication device, to use at performing random access to the network.
  • M2M Machine to Machine
  • a method for a device to perform a random access to the network comprising: receiving system information from the network, wherein the system information comprises a high speed flag, wherein the high speed flag with a first value indicates a first mode and the high speed flag with a second value indicates a second mode; and transmitting a random access preamble sequence generated from a Zaddoff Chu (ZC) sequence with a cyclic shift value, wherein the cyclic shift value is differently determined according to the first mode and the second mode, and wherein the device with a static characteristic determines the cyclic shift value according to the first mode, even when the high speed flag indicates the second mode is proposed.
  • ZC Zaddoff Chu
  • system information may further comprise zero correlation zone configuration information indicating Ncs value, and wherein the cyclic shift value is determined as integer multiple of the Ncs value according to the first mode.
  • the zero correlation zone configuration information may indicate different values of the Ncs value for the first mode and the second mode.
  • the device with the static characteristic may determine the value of the Ncs value according to the first mode, even when the high speed flag indicates the second mode.
  • the cyclic shift value can be determined considering a cyclic shift corresponding to a Doppler shift of magnitude 1/T S E Q , when the cyclic shift value is to be determined according to the second mode, where the T S E Q represents a time domain length of a sequence part of the random access preamble sequence.
  • the device with the static characteristic may comprise a M2M (Machine to Machine) communication device.
  • M2M Machine to Machine
  • a method for a network to control a random access from a device comprising: transmitting system 0 information to the device, wherein the system information comprises a high speed flag, wherein the high speed flag with a first value indicates a first mode and the high speed flag with a second value indicates a second mode; and detecting a random access preamble sequence generated from a Zaddoff Chu (ZC) sequence with a cyclic shift value, wherein the cyclic shift value is differently determined according to the first mode and the second mode, and wherein the network tries to detect the random access preamble sequence for both of the cases when the device transmitted the random access preamble with the cyclic shift value according to the first mode and when the device transmitted the random access preamble with the cyclic shift value according to the second mode, even when the network transmitted the system information with the high speed flag indicating the second mode is proposed.
  • ZC Zaddoff Chu
  • the device may comprise a device with a static characteristic.
  • the device with the static characteristic may comprise a M2M (Machine to Machine) communication device.
  • a device with a static characteristic and performing a random access to the network comprising: a receiver configured to receive system information from the network, wherein the system information comprises a high speed flag, wherein the high speed flag with a first value indicates a first mode and the high speed flag with a second value indicates a second mode; a transmitter configured to transmit a random access preamble sequence generated from a Zaddoff Chu (ZC) sequence with a cyclic shift value, wherein the cyclic shift value is differently determined according to the first mode and the second mode; and a processor connected to the receiver and the transmitter, configured to determines the cyclic shift value according to the first mode, even when the high speed flag indicates the second mode is proposed.
  • ZC Zaddoff Chu
  • the system information may further comprise zero correlation zone configuration information indicating Ncs value, and the processor may be configured to determine the cyclic shift value as integer multiple of the Ncs value according to the first mode.
  • the zero correlation zone configuration information may indicate different values of the Ncs value for the first mode and the second mode.
  • the processor may determine the value of the Ncs value according to the first mode, even when the high speed flag indicates the second mode.
  • the processor may determine the cyclic shift value considering a cyclic shift corresponding to a Doppler shift of magnitude 1/T SEQ , when the cyclic shift value is to be determined according to the second mode, and where the T SEQ represents a time domain length of a sequence part of the random access preamble sequence.
  • the device may comprise a M2M (Machine to Machine) communication device.
  • M2M Machine to Machine
  • a network for controlling a random access from a device comprising: a transmitter configured to transmit system information to the device, wherein the system information comprises a high speed flag, wherein the high speed flag with a first value indicates a first mode and the high speed flag with a second value indicates a second mode; and a receiver configured to detect a random access preamble sequence generated from a Zaddoff Chu (ZC) sequence with a cyclic shift value, wherein the cyclic shift value is differently determined according to the first mode and the second mode, and a processor connected to the transmitter and the receiver, and configured to control the receiver to try to detect the random access preamble sequence for both of the cases when the device transmitted the random access preamble with the cyclic shift value according to the first mode and when the device transmitted the random access preamble with the cyclic shift value according to the second mode, even when the network transmitted the system information with the high speed flag
  • the device may comprise a device with a static characteristic, and the device with the static characteristic may comprise a M2M (Machine to Machine) communication device.
  • M2M Machine to Machine
  • Figure 1 is a schematic diagram of E-UMTS network structure as an example of a mobile communication system
  • Figures 2 and 3 are diagrams for structures of a radio interface protocol between a user equipment and UTRAN based on the 3GPP radio access network specifications;
  • Figure 4 shows the contention-based procedure consists of four-steps
  • Figure 5 shows the non-contention-based procedure consists of two-steps
  • Figure 6 shows the required dimension of the cyclic shift unit
  • Figure 7 shows the effect of frequency offset
  • Figure 8 provides the key elements of M2M Domain.
  • Figure 9 shows apparatus for implementing the present invention.
  • a terminal is a generic term of such a mobile or fixed user-end device as a user equipment (UE), a mobile station (MS) and the like.
  • UE user equipment
  • MS mobile station
  • eNB is a generic name of such a random node of a network end, such as a base station, which communicates with a terminal, as a Node B, an eNnode B and the like.
  • the present invention is directed to an enhanced cyclic shift used for static device, such as M2M (Machine to Machine) communication device, to use at performing random access to the network.
  • M2M Machine to Machine
  • a random access procedure of the LTE system is first explained as an example.
  • the LTE random access procedure comes in two forms, allowing access to be either contention-based (implying an inherent risk of collision) or contention-free.
  • a UE initiates a contention-based random access procedure for all use-cases listed as following.
  • a UE in RRC CONNECTED state but not uplink-synchronized, needing to send new uplink data or control information (e.g. an event-triggered measurement report);
  • new uplink data or control information e.g. an event-triggered measurement report
  • a random access preamble signature is randomly chosen by the UE, with the result that it is possible for more than one UE simultaneously to transmit the same signature, leading to a need for a subsequent contention resolution process.
  • the eNodeB has the option of preventing contention occurring by allocating a dedicated signature to a UE, resulting in contention-free access. This is faster than contention-based access - a factor which is particularly important for the case of handover, which is time-critical.
  • a fixed number (64) of preamble signatures is available in each LTE cell, and the operation of the two types of RACH procedure depends on a partitioning of these signatures between those for contention-based access and those reserved for allocation to specific UEs on a contention-free basis.
  • FIGs. 4 and 5 are procedural diagrams illustrating Contention-based Random Access
  • the contention-based procedure consists of four-steps as shown in Figure 4:
  • Step 1 Preamble transmission (message 1);
  • Step 3 Layer 2 / Layer 3 (L2/L3) message (message 3);
  • Step 4 Contention resolution message (message 4).
  • the slightly unpredictable latency of the random access procedure can be circumvented for some use cases where low latency is required, such as handover and resumption of downlink traffic for a UE, by allocating a dedicated signature to the UE on a per-need basis.
  • the procedure is simplified as shown in Figure 5. The procedure terminates with the RAR.
  • PRACH preamble 64 PRACH signatures are available in LTE, compared to only 16 in WCDMA. This can not only reduce the collision probability, but also allow for 1 bit of information to be carried by the preamble and some signatures to be reserved for contention free access. Therefore, the LTE PRACH preamble called for an improved sequence design with respect to WCDMA. While Pseudo-Noise (PN) based sequences were used in WCDMA, in LTE prime-length Zadoff-Chu (ZC) sequences have been chosen. These sequences enable improved PRACH preamble detection performance.
  • PN Pseudo-Noise
  • ZC Zadoff-Chu
  • random access preambles with zero correlation zones of length ⁇ cs — ⁇ are defined by cyclic shifts according to:
  • N C s can be referred to as basic cyclic shift unit.
  • Figure 6 shows the required dimension of the cyclic shift unit.
  • the cyclic shift offset Ncs is dimensioned so that the Zero Correlation Zone (ZCZ) of the sequences guarantees the orthogonality of the PRACH sequences regardless of the delay spread and time uncertainty of the UEs.
  • the minimum value of Ncs should therefore be the smallest integer number of sequence sample periods that is greater than the maximum delay spread and time uncertainty of an uplink non-synchronized UE, plus some additional guard samples provisioned for the spill-over of the pulse shaping filter envelope present in the PRACH receiver (see. Figure 6).
  • Figure 7 shows the effect of frequency offset.
  • design of the cyclic shift for RACH shall be divided into the above two cases, (1 ) unrestricted mode and (2) restricted mode (due to high frequency offset).
  • Network normally determines whether the UEs within its cell are high speed devices. For example, when the cell is located near the high speed train, the network for that cell may decide to use cyclic shift for restricted mode. Network normally signals whether the UE has to use cyclic shifts for unrestricted mode or restricted mode via HighSpeedFlag. According to the current LTE standard, UE has to follow the mode selected by the network.
  • M2M Machine to Machine
  • Figure 8 provides the key elements of M2M Domain:
  • the M2M Device Domain is a M2M area that provide connectivity between M2M Devices and M2M Gateways, e.g. Personal Area Network technologies such as IEEE 802.15, SRD, UWB, Zigbee, Bluetooth, etc, or local networks such as PLC, M- BUS, Wireless M-BUS.
  • M2M Gateways e.g. Personal Area Network technologies such as IEEE 802.15, SRD, UWB, Zigbee, Bluetooth, etc, or local networks such as PLC, M- BUS, Wireless M-BUS.
  • M2M Device is a device capable of replying to requests (or transmitting) for data contained within those devices autonomously. Such devices run M2M applications using M2M Service Capabilities. They can be connected to the Network domain either directly via the access network(s) or via M2M gateway(s) as e network proxy.
  • M2M Gateways use M2M capabilities to ensure M2M Devices inter working and interconnection to the communications network (Network Domain).
  • the M2M Core Network Domain provides connectivity between the M2M Device(s)/Gateway(s) and M2M application (server). It can be further split into Access transport and Core networks, e.g.: xDSL, PLC, satellite, LTE, GERAN, UTRAN, eUTRAN, W-LAN, WiMAX, etc.
  • Access transport and Core networks e.g.: xDSL, PLC, satellite, LTE, GERAN, UTRAN, eUTRAN, W-LAN, WiMAX, etc.
  • M2M Application Domain contains the middleware layer where data goes through various application services and is used by the specific business-processing a software agent, or process by which the data can be analyzed, reported, and acted upon.
  • M2M device in its nature, has static characteristics.
  • the M2M device e.g. power metering device
  • the M2M device can be located in a cell identified by the network as having the UEs with high mobility. In this case, if this static device should follow the signaling of the network indicating the restricted mode, we might waist the available signatures for PRACH.
  • One aspect of the present proposal is for a method for a device to perform a random access to the network.
  • This method comprises: receiving system information from the network, wherein the system information comprises a high speed flag, wherein the high speed flag with a first value indicates a first mode and the high speed flag with a second value indicates a second mode; and transmitting a random access preamble sequence generated from a Zaddoff Chu (ZC) sequence with a cyclic shift value, wherein the cyclic shift value is differently determined according to the first mode and the second mode, and wherein the device with a static characteristic determines the cyclic shift value according to the first mode, even when the high speed flag indicates the second mode.
  • ZC Zaddoff Chu
  • the system information received from the network may comprise PRACH-Config.
  • the IE PRACH-ConfigSIB and IE PRACH-Config are used to specify the PRACH configuration in the system information and in the mobility control information, respectively. able 1
  • PRACH-Config :: SEQUENCE ⁇
  • PRACH-Configlnfo :: SEQUENCE ⁇
  • rootSequencelndex indicates the root index u of the ZC sequence, and by using this information u th root ZC sequence is defined by Equation 1, where the length N zc of the Zadoff-Chu sequence is given by Table 2.
  • prach-Configlndex indicates preamble format, system frame number, and subframe number for PRACH. See table 3.
  • highSpeedFlag indicates whether the UE is to select cyclic shift according to a first mode (unrestricted mode) or a second mode (restricted mode).
  • HighSpeedFlag with TRUE value may indicate the unrestricted mode and HighSpeedFlag with FALSE value may indicate the restricted mode.
  • zeroCorrelationZoneConfig is to indicate parameter Ncs, but Ncs value is differently acquired by the following table 4.
  • Table 4 is for Ncs preamble generation (preamble formats 0-3).
  • the device can transmit random access preamble sequence generated from u th ZC sequence to the network.
  • the cyclic shift value is differently determined according to the restricted mode and unrestricted mode.
  • ⁇ CS is given by Table 4 for preamble formats 0-3.
  • the parameter High-speed-flag provided by higher layers determines if unrestricted set or restricted set shall be used.
  • the device with a static characteristic such as M2M device, may determine the N cs parameter and C v value for the unrestricted set even though the network signaled Highspeed-flag with FALSE value.
  • the system can more efficiently use the available cyclic shifts.
  • a u of [equation 3] is the cyclic shift corresponding to a Doppler shift of magnitude (TSEQ represents the time domain length of the sequence part of the random access preamble; it corresponds to the cyclic shift corresponding to one subcarrier spacing) and is given by
  • the device with the static characteristic as M2M device.
  • the device with the statistic characteristic may include other type of device.
  • Network according to the present proposal may operate as following.
  • the network may detect the RACH preamble sequence both with the cyclic shift for unrestricted mode and the cyclic shift for restricted mode, even though the network informed the restricted mode. It is based on the assumption that the network knows there can be a device with static characteristic.
  • the network may try to detect the preamble with both types of cyclic shift even though it signaled UEs of restricted mode. It is possible that the static device, such as M2M device, registered with the network as static device before it starts random access to the network. Alternatively, the network may, by default, try to detect the preamble with both types of cyclic " shift even though it signaled the HighSpeedFlag as FALSE (meaning restricted mode).
  • FALSE meaning restricted mode
  • Figure 9 shows apparatus for implementing the present invention.
  • a wireless communication system includes a BS 10 and one or more UE 20.
  • a transmitter may be a part of the BS 10
  • a receiver may be a part of the UE
  • a transmitter may be a part of the UE 20, and a receiver may be a part of the BS 10.
  • a BS 10 may include a processor 1 1 , a memory 12, and a radio frequency (RF) unit 13.
  • the processor 1 1 may be configured to implement proposed procedures and/or methods described in this document.
  • the memory 12 is coupled with the processor 1 1 and stores a variety of information to operate the processor 1 1.
  • the RF unit 13 is coupled with the processor 1 1 and transmits and/or receives a radio signal.
  • a UE 20 may include a processor
  • the processor 21 may be configured to implement proposed procedures and/or methods described in this application.
  • the memory 22 is coupled with the processor 21 and stores a variety of information to operate the processor KR2012/001580
  • the RF unit 23 is coupled with the processor 21 and transmits and/or receives a radio signal.
  • the BS 10 and/or the UE 20 may have single antenna and multiple antenna. When at least one of the BS 10 and the UE 20 has multiple antenna, the wireless communication system may be called as multiple input multiple output (MIMO) system.
  • MIMO multiple input multiple output
  • the UE may comprise static device, such as M2M device.
  • the processor 21 can be configured to use cyclic shift according to unrestricted mode even when the RF Unit 23 receives system information indicating the restricted mode.
  • the above-described enhanced random access technology and apparatus are explained mainly with reference to the example that they are applied to the 3 GPP LTE system. However, they are applicable to various mobile communication systems, such as IEEE based system employing ranging procedure corresponding to the random access procedure of LTE.

Landscapes

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

Abstract

Le présent document concerne un décalage cyclique amélioré utilisé pour un dispositif statique, tel qu'un dispositif de communication M2M (de machine à machine), à utiliser lors de la réalisation d'un accès aléatoire au réseau. Selon un mode de réalisation, un procédé consiste à : recevoir des informations système en provenance du réseau, les informations système comprenant un drapeau grande vitesse, une première valeur du drapeau grande vitesse indiquant un premier mode et une seconde valeur du drapeau grande vitesse indiquant un second mode ; et transmettre une séquence de préambule d'accès aléatoire générée à partir d'une séquence de Zadoff Chu (ZC) avec une valeur de décalage cyclique, la valeur de décalage cyclique étant déterminée différemment selon le premier mode et le second mode, et le dispositif qui possède une caractéristique statique déterminant la valeur de décalage cyclique selon le premier mode, même quand le drapeau grande vitesse indique le second mode.
PCT/KR2012/001580 2011-11-13 2012-03-02 Décalage cyclique amélioré pour dispositifs statiques WO2013069850A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161559131P 2011-11-13 2011-11-13
US61/559,131 2011-11-13

Publications (1)

Publication Number Publication Date
WO2013069850A1 true WO2013069850A1 (fr) 2013-05-16

Family

ID=48290196

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/001580 WO2013069850A1 (fr) 2011-11-13 2012-03-02 Décalage cyclique amélioré pour dispositifs statiques

Country Status (1)

Country Link
WO (1) WO2013069850A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014123698A2 (fr) * 2013-02-06 2014-08-14 Qualcomm Incorporated Détermination d'attributions de paramètre ncs et de séquence racine logique
EP3232726A4 (fr) * 2014-12-10 2017-11-29 ZTE Corporation Procédé et appareil de transmission et de réception d'informations de configuration d'accès aléatoire
CN109792771A (zh) * 2016-09-29 2019-05-21 华为技术有限公司 一种随机接入前导序列的生成方法及用户设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009022948A1 (fr) * 2007-08-10 2009-02-19 Telefonaktiebolaget Lm Ericsson (Publ) Améliorations à un réseau e-utran, ou s'y rapportant, et transfert
WO2010002303A1 (fr) * 2008-07-03 2010-01-07 Telefonaktiebolaget L M Ericsson (Publ) Détermination de séquences de préambules pour un accès aléatoire

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009022948A1 (fr) * 2007-08-10 2009-02-19 Telefonaktiebolaget Lm Ericsson (Publ) Améliorations à un réseau e-utran, ou s'y rapportant, et transfert
WO2010002303A1 (fr) * 2008-07-03 2010-01-07 Telefonaktiebolaget L M Ericsson (Publ) Détermination de séquences de préambules pour un accès aléatoire

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation (Release 10)", 3GPP TS 36.211 V10.3.0, September 2011 (2011-09-01) *
"3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Telecommunication management; Home enhanced Node B (HeNB) Operations, Administration, Maintenance and Provisioning (OAM&P); Information model for Type 1 interface HeNB to HeNB Management System (HeMS) (Rel", 3GPP TS 32.592 V10.0.0, June 2010 (2010-06-01) *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014123698A2 (fr) * 2013-02-06 2014-08-14 Qualcomm Incorporated Détermination d'attributions de paramètre ncs et de séquence racine logique
WO2014123698A3 (fr) * 2013-02-06 2014-11-06 Qualcomm Incorporated Détermination d'attributions de paramètre ncs et de séquence racine logique
US9055528B2 (en) 2013-02-06 2015-06-09 Qualcomm Incorporated Determination of NCS parameter and logical root sequence assignments
US10075933B2 (en) 2013-02-06 2018-09-11 Qualcomm Incorporated Determination of Ncs parameter and logical root sequence assignments
EP3232726A4 (fr) * 2014-12-10 2017-11-29 ZTE Corporation Procédé et appareil de transmission et de réception d'informations de configuration d'accès aléatoire
EP3509382A4 (fr) * 2016-09-29 2019-10-02 Huawei Technologies Co., Ltd. Procédé de génération d'une séquence de préambule d'accès aléatoire et équipement utilisateur
CN109792771A (zh) * 2016-09-29 2019-05-21 华为技术有限公司 一种随机接入前导序列的生成方法及用户设备
US10932299B2 (en) 2016-09-29 2021-02-23 Huawei Technologies Co., Ltd. Random access preamble sequence generation method and user equipment
JP2021132386A (ja) * 2016-09-29 2021-09-09 華為技術有限公司Huawei Technologies Co., Ltd. ランダムアクセスプリアンブルシーケンス生成方法及びユーザ機器
CN115720380A (zh) * 2016-09-29 2023-02-28 华为技术有限公司 一种随机接入前导序列的生成方法及用户设备
JP7257444B2 (ja) 2016-09-29 2023-04-13 華為技術有限公司 ランダムアクセスプリアンブルシーケンス生成方法及びユーザ機器
US11678377B2 (en) 2016-09-29 2023-06-13 Huawei Technologies Co., Ltd. Random access preamble sequence generation method and user equipment
CN115720380B (zh) * 2016-09-29 2023-08-22 华为技术有限公司 一种随机接入前导序列的生成方法及用户设备
EP4258608A3 (fr) * 2016-09-29 2023-12-13 Huawei Technologies Co., Ltd. Procédé de génération d'une séquence de préambule d'accès aléatoire et équipement utilisateur
CN109792771B (zh) * 2016-09-29 2024-04-09 华为技术有限公司 一种随机接入前导序列的生成方法及用户设备

Similar Documents

Publication Publication Date Title
US11197316B2 (en) Terminal device, base station device, and radio communication method
JP7375837B2 (ja) 低複雑度の狭帯域端末のためのランダムアクセス手順でのｈａｒｑメッセージに割り当てられたリソースを示すための方法
CN112055999B (zh) 发送和接收消息3协议数据单元的装置和方法
KR102422168B1 (ko) 데이터 전송 방법, 기지국 및 단말기
EP3024294B1 (fr) Affectation de ressources radio dans un système de radiocommunication
CN112753274A (zh) 用于支持用于2步随机接入过程的多个消息a大小和上行链路覆盖的方法和装置
EP2214449B1 (fr) Affectation de ressources de canal d'accès aléatoire
JP4932001B2 (ja) 無線通信システムにおいてランダムアクセス過程を遂行する方法
EP2188919B1 (fr) Attribution et choix de signatures spécialisées
EP2442618B1 (fr) Procédé destiné à un terminal utilisateur, pour un accès aléatoire à un système de communication mobile à agrégation de porteuses
US20180103419A1 (en) Method and apparatus for changing a coverage enhancement mode
EP2442470B1 (fr) Procédé permettant à un équipement utilisateur d'effectuer un accès aléatoire dans un système de communication mobile avec regroupement de porteuses
US20230033126A1 (en) System and method of transmitting and receiving paging and system information
US20140293927A1 (en) Method of controlling uplink synchronization state at a user equipment in a mobile communication system
CN112106401B (zh) 发送和接收寻呼和系统信息的系统和方法
CN106385712B (zh) 一种数据传输方法及系统
JP2018511236A (ja) 物理ランダムアクセスチャネル送信のための繰返しレベルカバレージ拡張技法
EP3026970A1 (fr) Système de radiocommunication, appareil de station de base, appareil terminal, procédé de radiocommunication et circuit intégré
EP1982438A1 (fr) Procédé pour empêcher une collision au moyen d'un identificateur dans un réseau mobile
US20170359838A1 (en) Method for transmitting random access response, base station and user equipment
CN107026721B (zh) 前导序列的发送和接收方法、装置及系统
US20180279373A1 (en) Method and apparatus for performing random access procedure
KR20200087698A (ko) 무선통신시스템에서 사이드링크 물리계층 세션 아이디를 결정하는 방법 및 장치
EP2975893B1 (fr) Système de communication sans fil, dispositif de station de base et procédé de communication sans fil pour implementer de la connectivité double
EP3128803B1 (fr) Procédé, dispositif et système de transmission de données

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: 12847658

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12847658

Country of ref document: EP

Kind code of ref document: A1