[go: up one dir, main page]

WO2011020211A1 - Procédé d’accès aléatoire et station de base, nœud de relais et système utilisant le procédé - Google Patents

Procédé d’accès aléatoire et station de base, nœud de relais et système utilisant le procédé Download PDF

Info

Publication number
WO2011020211A1
WO2011020211A1 PCT/CN2009/000939 CN2009000939W WO2011020211A1 WO 2011020211 A1 WO2011020211 A1 WO 2011020211A1 CN 2009000939 W CN2009000939 W CN 2009000939W WO 2011020211 A1 WO2011020211 A1 WO 2011020211A1
Authority
WO
WIPO (PCT)
Prior art keywords
user equipment
relay node
message
base station
prach
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2009/000939
Other languages
English (en)
Chinese (zh)
Inventor
杨涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Shanghai Bell Co Ltd
Alcatel Lucent SAS
Original Assignee
Alcatel Lucent Shanghai Bell Co Ltd
Alcatel Lucent SAS
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 Alcatel Lucent Shanghai Bell Co Ltd, Alcatel Lucent SAS filed Critical Alcatel Lucent Shanghai Bell Co Ltd
Priority to PCT/CN2009/000939 priority Critical patent/WO2011020211A1/fr
Priority to CN200980160549.4A priority patent/CN102474878B/zh
Publication of WO2011020211A1 publication Critical patent/WO2011020211A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present invention relates to a random access procedure in an LTE-A system, and more particularly to a random access procedure in a scenario in which a Type II relay is deployed. Background technique
  • LTE-A is a smooth evolution based on LTE. Based on such a positioning, the LTE-Advanced system should naturally support all the functions of the original LTE and support forward and backward compatibility with LTE, that is, the terminal of R8 LTE can access the future.
  • the LTE-Advanced system, the LTE-Advanced terminal can also access the R8 LTE system.
  • the user terminal transmits a packet random access channel (PRACH) message and waits for a response message from the serving base station in a fixed time window. If no response message is received in this time window, the user terminal considers that the previous PRACH transmission failed and is ready to retransmit the PRACH message.
  • PRACH packet random access channel
  • the response message fed back by the serving base station includes: TC-RNTI, RAID, UL Grant, and TA (time advance), etc., where TC-RNT indicates Temporary Cellular - Radio Network Temporary Identity and RAID indicates random access code Identification, UL Grant indicates an uplink resource allocation command, and TA indicates Timing Advance information.
  • the propagation delay is also variable.
  • an adaptive frame adjustment technique is adopted. Once the user equipment is registered through the access channel, the serving base station tests the propagation delay and sends a timing advance instruction to the user equipment, and the user equipment performs adaptive frame adjustment according to the instruction, so that the user equipment sends data to the serving base station at the time and the base station.
  • the received time slots are identical, that is, uplink synchronization is established.
  • the TA value is calculated by the serving base station based on the propagation delay amount and notified to the user equipment. The amount of propagation delay can be determined based on the received power of the message, the time at which the message is received, and the like.
  • Relay Relay
  • CoMP Coordinatd Multicast
  • Relay technology is based on the original site, by adding some new Relay stations (or relay nodes), increasing the distribution density of stations and antennas. These new relay nodes and primary base stations (DeNB (donor) The eNB)) is connected via wireless, and there is no wired connection between the transmission network and the downlink data.
  • the downlink data is first transmitted to the primary base station and then to the relay node, and the relay node is transmitted to the terminal user, and the uplink is reversed. This method narrows the distance between the antenna and the end user, and can improve the link quality of the terminal, thereby improving the spectrum efficiency and user data rate of the system.
  • the application scenario of type I relay is mainly to increase the coverage area and blind spot coverage. It has independent PCI, has pilot channel and synchronization channel, and broadcasts its own system information, which is equivalent to an independent base station, but it has a problem. Interference problem between the relay node (relay node) and the DeNB. Therefore, the type II relay is required.
  • the application scenario of the type II relay is to increase the cell capacity and the extended coverage area.
  • the PCI is the same as the DeNB, and is mainly controlled by the DeNB, and is mainly used for coordinated transmission.
  • the Type II trunk belongs to the L2 relay and does not have an independent cell ID, and therefore does not create a cell.
  • the DeNB has no interference problem and can work together on the user equipment.
  • an associated signaling connection is established between the terminal and the base station
  • a signaling connection is established between the terminal and the relay node.
  • Non-cooperative transmission The destination receives the transmission only from the relay node, which is called the post-decoding forwarding scheme. This is a typical relay node operation in which the relay node forwards data received from the source to the destination in a time division multiplexed TDM manner.
  • Table 1 summarizes the possible types of II relay operating modes. Table 1: Type II Relay Application
  • the present invention defines a feasible method for a random access procedure associated with Type II relays under the above conditions. Summary of the invention
  • the object of the present invention is to propose a random access procedure in a scenario in which a Type II relay node is deployed, which can support existing user equipment.
  • a random access method for use in a wireless communication system includes a base station, a user equipment, and at least one relay node, and the user equipment is located at the base station.
  • the random access method includes the following steps: the base station is based on being sent by the at least one relay node as the user equipment a PRACH message detection report of the detected result of the transmitted PRACH message, selecting a relay node for serving the user equipment, and transmitting a selection result to the selected relay node; the base station transmitting the user equipment according to itself Detection of the PRACH message and/or a PRACH message detection report sent by the selected relay node as a result of detecting the PRACH message sent by the user equipment, calculating a timing advance message, and reporting to the user equipment And/or the selected relay node feedback time advance message; and the user equipment based on the received time Inter-advance message, sending up
  • the random access method further includes the following steps: And generating, according to the detection of the PRACH message sent by the user equipment, a temporary time advance message, and transmitting the message to the user equipment; and the user equipment sending the uplink data based on the temporary time advance message.
  • the random access method further includes the following steps: the selected relay node forwards the received timing advance from the base station to the user equipment when receiving the timing advance message from the base station Message.
  • the random access method further includes the following steps: the at least one relay node is based on its own Determining a PRACH message sent by the user equipment, generating a temporary time advance message, and transmitting the message to the user equipment; and selecting, by the user equipment, one of the received temporary time advance message, based on the selected temporary Time advance message, sending uplink data.
  • the random access method further comprises the step of: the base station notifying the PRACH related configuration to all the relay nodes.
  • the wireless communication system is an LTE-A system.
  • the at least one relay node is a type II relay node.
  • a base station including: a receiving unit, configured to detect a PRACH message from a user equipment, and receive a PRACH message sent by the at least one relay node as sent by the user equipment. a PRACH message detection report of the detection result, a selecting unit, configured to detect a report based on the PRACH message, and select a relay node for serving the user equipment; and the processing unit is based on the PRACH message sent by the user equipment by itself Detecting and/or a PRACH message detection report sent by the selected relay node as a result of detecting the PRACH message sent by the user equipment, calculating a timing advance message; and transmitting unit for selecting the selected The relay node transmits a selection result of the selection unit and is used to feed back a timing advance message to the user equipment and/or the selected relay node.
  • the processing unit sends the user equipment according to the user equipment
  • the detection of the PRACH message generates a temporary time advance message
  • the transmitting unit sends a temporary time advance message to the user equipment.
  • a relay node including: a receiving unit, configured to detect a PRACH message from a user equipment; and a processing unit, configured to generate a PRACH message detection report based on the detected PRACH message; And a sending unit, configured to send the generated PRACH message detection report to the base station.
  • the processing unit further generates a temporary timing advance message based on the detection of the PRACH message sent by the user equipment by itself; the sending unit sends a temporary time advance message to the user equipment; The unit receives a timing advance message from the base station; and the transmitting unit transmits the received timing advance message from the base station to the user equipment.
  • the relay node is a type II relay node.
  • a wireless communication system comprising the above base station, user equipment, and at least one of the above relay nodes.
  • the wireless communication system is an LTE-A system.
  • FIG. 1 is a schematic structural diagram of a base station and a relay node in a wireless communication system according to the present invention
  • FIG. 2 is a schematic structural diagram of a communication system according to a first embodiment of the present invention
  • FIG. 3 shows a signal flow diagram of a random access procedure according to a first example of the first embodiment of the present invention
  • FIG. 4 shows a signal flow of a random access procedure according to a second example of the first embodiment of the present invention.
  • Figure 5 is a block diagram showing the structure of a communication system in accordance with a second embodiment of the present invention
  • FIG. 6 is a block diagram showing the structure of a communication system according to a third embodiment of the present invention.
  • FIG. 7 is a signal flow diagram showing a random access procedure of a first example according to a third embodiment of the present invention.
  • Fig. 8 is a signal flow diagram showing a random access procedure of a second example according to the third embodiment of the present invention. Detailed ways
  • the main concept of the random access procedure proposed by the present invention is: when detecting the PRACH message of the user equipment, the relay node sends a PRACH message detection report to the DeNB, including the PRACH message detection power, time information, etc.; the DeNB selects the service user equipment. The relay node regenerates the timing advance (TA) based on the selected relay node's report and its own time information, and notifies the user equipment of the regenerated TA. On the user equipment side, instead of the temporary TA, the newly received TA is used for uplink data transmission.
  • TA timing advance
  • a wireless communication system includes a base station, a user equipment, and at least one relay section Point, the user equipment is located within the service area of the base station and/or is located within the service range of the at least one relay node.
  • FIG. 1 is a block diagram showing the structure of a base station and a relay node in a wireless communication system according to an embodiment of the present invention.
  • the base station 100 includes a transmitting unit 101, a receiving unit 102, a processing unit 103, and a selecting unit 104.
  • the relay node 200 includes a receiving unit 201, a transmitting unit 202, and a processing unit 203.
  • the base station 100 and the relay node 200 further include, for example, a control unit that performs control, a storage unit that performs storage, and the like, and only parts related to the present invention are shown here to avoid making the description of the present invention unclear.
  • the receiving unit 101 of the base station 100 and the receiving unit 201 of the relay node 200 both perform the detection of the PRACH message.
  • the processing unit 203 of the relay node 200 processes the detection result of the PRACH message, and generates a PRACH message detection report, and then the sending unit 202 sends the generated PRACH message detection report to the base station. 100.
  • the processing unit 103 of the base station 100 processes the PRACH message detection report sent by the relay node, and the selection unit 104 selects a relay node for serving the user equipment based on the processing result of the processing unit 103, and the selected unit is selected by the transmitting unit 101.
  • the relay node sends the selection result.
  • the processing unit 103 of the base station 100 also calculates a timing advance message based on its own detection of the PRACH message transmitted by the user equipment and/or a PRACH message detection report from the selected relay node, and is transmitted by the transmitting unit 101.
  • the user equipment and/or the selected relay node feeds back a timing advance message.
  • the processing unit 103 of the base station 100 when detecting the PRACH message sent by the user equipment but has not received the PRACH message detection report of the relay node, generates a temporary based on the detection of the PRACH message sent by the user equipment by itself.
  • the time advance message is sent by the transmitting unit 101 to the user equipment.
  • the processing unit 203 of the relay node 200 also generates a temporary timing advance message based on its own detection of the PRACH message transmitted by the user equipment, and transmits it to the user equipment by the transmitting unit 202. Further, when the receiving unit 201 receives the timing advance message from the base station, the relay node 200 transmits the received timing advance message from the base station to the user equipment by the transmitting unit 202.
  • the random access procedure in the above three cases of the Type II relay operation will be described in detail below. Case 1:
  • Fig. 2 is a block diagram showing the structure of a communication system in accordance with a first embodiment of the present invention.
  • type ⁇ relay is used to increase the cell capacity
  • Type II relay works in a cooperative transmission with the DeNB. That is to say, the user equipment directly performs data transmission with the DeNB, and also relays data transmission between the user equipment and the DeNB through the serving relay node.
  • the user equipment is within the coverage of the DeNB and needs to establish uplink synchronization with both the serving relay node and the DeNB.
  • FIG. 3 shows a signal flow diagram of a random access procedure according to a first example of the first embodiment of the present invention.
  • the DeNB notifies the PRACH related configuration to all deployed Type II relays so that each relay node knows when and where to detect the PRACH message from the user equipment. Assume that there are Type II Relay Node 1 and Type II Relay Node 2 deployed.
  • step S102 the user equipment performs a conventional PRACH transmission that has been defined by LTE, and waits for a PRACH Response (PR) message in a predefined window.
  • PR PRACH Response
  • the DeNB and each relay node detect a PRACH message.
  • step S103 the DeNB operates according to the operation defined by LTE, including TC-RNTI allocation, temporary TA calculation, resource allocation, and the like.
  • the temporary TA is calculated based on the amount of propagation delay when the DeNB receives the PRACH message, that is, the received power of the message, the time of receiving the message, and the like.
  • step S104 the DeNB feeds back a PRACH response message (containing a temporary TA) so that the user equipment can receive the message in its predefined window.
  • step S106 the user equipment transmits data based on the TA in the received PRACH response message, and establishes temporary uplink synchronization with the DeNB. Thereafter, the user equipment can perform data transmission with the DeNB.
  • each relay node After detecting the PRACH message, each relay node sends a PRACH message detection report, such as PRACH message reception power, reception time information, etc., to the DeNB after detecting the PRACH message (S105).
  • a PRACH message detection report such as PRACH message reception power, reception time information, etc.
  • the DeNB selects a relay node for serving the user equipment in step S107, and recalculates the TA according to the report of the selected relay node, so that the user equipment simultaneously transmits the uplink data based on the new TA with the DeNB and the The selected relay node is synchronized.
  • step S108 the DeNB transmits a new TA to the user equipment in the MAC layer signaling, and notifies the selected relay node of its selection result (S109).
  • step S110 the user equipment performs subsequent uplink transmission based on the newly received TA information. Lose. At this point, the user equipment is able to establish uplink synchronization with both the eNB and the selected relay node. Thereafter, the selected relay node detects the uplink transmission of the user equipment and performs retransmission in a manner of cooperating with the DeNB for transmission.
  • uplink synchronization of the user equipment with the DeNB and the selected relay node is established through the above steps. In addition, existing user equipment operations are not affected.
  • step S107 can end during the configured PRACH response message transmission window, and the TA in the PRACH response message has considered the selected relay
  • the user equipment can establish uplink synchronization with the DeNB and the relay node after receiving the PRACH response message, so there is no need to retransmit the TA, ie, steps S108 (and S103) are not required.
  • a signal flow diagram of the random access procedure according to the second example of the first embodiment of the present invention is as shown in FIG. Situation 2
  • Fig. 5 is a block diagram showing the structure of a communication system in accordance with a second embodiment of the present invention.
  • type ⁇ relay is used to increase the cell capacity, and the Type II relay operates in a manner of non-cooperative transmission with the DeNB, and the data transmission between the user equipment and the DeNB is relayed through the relay node.
  • a method similar to the case 1 can be employed.
  • the only difference is that since the type II relay node and the DeNB do not cooperate in transmission, the user equipment does not need to synchronize with the DeNB, and only needs to implement uplink synchronization with the relay node.
  • the random access procedure is the same as the random access procedure of the first example and the second example according to the first embodiment of the present invention, except that in step S107, the DeNB is based only on the selected relay node. Report to calculate the new TA command so that the user device only needs to synchronize with the selected relay node. In addition, existing user equipment operations are not affected.
  • FIG. 6 is a block diagram showing the structure of a communication system in accordance with a third embodiment of the present invention.
  • the user equipment must relay the data transmission between the user equipment and the DeNB through the relay node outside the coverage of the DeNB, and thus the relay node operates in a non-cooperative transmission manner with the DeNB.
  • the deployed relay node first detects the PRACH message of the user equipment. There are two options depending on the PRACH response message transmission scheme:
  • DeNB is responsible for generating PRACH response messages
  • FIG. 7 shows a signal flow diagram of a random access procedure of a first example according to a third embodiment of the present invention.
  • the random access procedure of the first example according to the third embodiment of the present invention as in the first embodiment and the second embodiment described above, it is assumed that the type II relay node 1 and the type II relay node 2 are deployed.
  • step S201 the DeNB notifies the PRACH related configuration to all deployed Type II relays so that each relay node knows when and where to detect the PRACH message from the user equipment.
  • the user equipment performs a conventional PRACH transmission that has been defined by LTE and waits for a PRACH Response (PR) message in a predefined window.
  • PR PRACH Response
  • the deployed relay node 1, 2 first detects the PRACH message and sends a PRACH message detection report to the DeNB, including PRACH message detection power, reception time information, and the like.
  • the DeNB selects a relay node serving the user equipment according to a predefined rule, calculates a TA based on the report of the selected relay node, and feeds back a PRACH response message to the selected relay node, including the allocated TC-RNTI and corresponding TA information.
  • the selected relay node sends a PRACH response message to the user equipment, including the allocated TC-RNTI, the allocated resource, the TA, and the like.
  • the user equipment establishes uplink synchronization with the selected relay node.
  • the transmission of the PRACH response message may be delayed due to communication between the DeNB and the relay node, so that the user equipment cannot receive the PRACH response message in its predefined window, so Impact on existing LTE user equipment operations.
  • the relay node is responsible for generating the PRACH response message
  • FIG. 8 shows a signal flow diagram of a random access procedure according to a second example of the third embodiment of the present invention.
  • the relay node sends a PRACH response message immediately after detecting the PRACH message.
  • the TC-RNTI is also used by the relay node. Assignment is not assigned by the DeNB. This process is shown in Figure 8, which is described in detail below.
  • step S301 the DeNB notifies the PRACH related configuration to all deployed Type II relays, so that each relay node knows when and where to detect from the user equipment. PRACH message.
  • the user equipment performs a conventional PRACH transmission that has been defined by LTE and waits for a PRACH Response (PR) message in a predefined window.
  • PR PRACH Response
  • step S303 the relay node detects the PARCH message.
  • the relay node that satisfies the predefined rule generates a PRACH response message, and the step includes allocating a TC-RNTI, allocating resources and calculating a TA as the DeNB.
  • the PRACH response message is sent to the user equipment such that the user equipment can receive the message in its predefined window.
  • step S306 On the user equipment side, if more than one PRACH response message is received, the user equipment selects one of them in step S306, and establishes uplink synchronization with the corresponding relay node based on the selected PRACH response message (for example, relaying) Node 1) (step S308). Since only the relay node 1 selected by the user equipment can correctly receive data from the user equipment, the selected relay node 1 forwards the data to the DeNB.
  • the selected PRACH response message for example, relaying
  • the relay node after detecting the PRACH message, the relay node sends its PRACH detection information report to the DeNB, including the allocated TC-RNTI, the allocated resources, and the like, in step S305.
  • DeNB is then selected (e.g. relay node 2) (step S307) that selects a notification 2 (step S309) o DeNB will relay node to relay node to a user equipment according to predetermined criteria, the relay node 2 and then to The user equipment transmits a new TA (step S310) so that the user equipment can establish uplink synchronization with the relay node 2 for future data transmission.
  • An advantage of the random access procedure according to the second example of the third embodiment of the present invention is that the existing user equipment operation is not affected since the PRACH response message transmission does not lag.
  • the TC-RNTI is allocated by the relay node instead of by the DeNB.
  • the DeNB can allocate a TC-RNTI pool to each relay node in the configuration phase, so that the relay node can only allocate the TC-RNTI in its pool to the user equipment in its coverage area.
  • the DeNB can allocate other TC-RNTIs to the user equipments it directly serves.
  • the relay node should be able to respond in the PRACH The temporary TA is calculated before the transmission.

Landscapes

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

Abstract

L’invention concerne un procédé d’accès aléatoire s’utilisant dans un système de communication sans fil, ledit système de communication sans fil comprenant une station de base, une installation d’abonné et au moins un nœud de relais, l’installation d’abonné se situant dans la zone de desserte de la station de base et/ou d’au moins un nœud de relais. Le procédé d’accès aléatoire comprend les étapes suivantes: sur la base d’un rapport de détection de message de voie d’accès aléatoire par paquets (PRACH), qui est envoyé par au moins un nœud de relais et considéré comme le résultat de détection du message de PRACH envoyé par l’installation d’abonné, la station de base sélectionne un nœud de relais pour desservir l’installation d’abonné et envoie le résultat de sélection au nœud de relais sélectionné; sur la base de la détection du message de PRACH provenant de l’installation d’abonné et envoyé par la station de base elle-même et/ou du rapport de détection de message de PRACH, qui est envoyé par le nœud de relais sélectionné et considéré comme le résultat de détection du message de PRACH envoyé par l’installation d’abonné, la station de base calcule le message d’avance de synchronisation et retourne ce message à l’installation d’abonné et/ou au nœud de relais sélectionné; l’installation d’abonné envoie les données de liaison montante sur la base du message d’avance de synchronisation reçu. L’invention concerne aussi une station de base et un nœud de relais servant à mettre en œuvre le procédé d’accès aléatoire, un système de communication sans fil comprenant une telle station de base et un nœud de relais. Le procédé d’accès aléatoire de l’invention permet de maintenir les installations d’abonnés existantes et de mettre en œuvre l’accès aléatoire dans un système comportant des nœuds de relais.
PCT/CN2009/000939 2009-08-17 2009-08-17 Procédé d’accès aléatoire et station de base, nœud de relais et système utilisant le procédé Ceased WO2011020211A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2009/000939 WO2011020211A1 (fr) 2009-08-17 2009-08-17 Procédé d’accès aléatoire et station de base, nœud de relais et système utilisant le procédé
CN200980160549.4A CN102474878B (zh) 2009-08-17 2009-08-17 随机接入方法和使用该方法的基站、中继节点和系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2009/000939 WO2011020211A1 (fr) 2009-08-17 2009-08-17 Procédé d’accès aléatoire et station de base, nœud de relais et système utilisant le procédé

Publications (1)

Publication Number Publication Date
WO2011020211A1 true WO2011020211A1 (fr) 2011-02-24

Family

ID=43606516

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/000939 Ceased WO2011020211A1 (fr) 2009-08-17 2009-08-17 Procédé d’accès aléatoire et station de base, nœud de relais et système utilisant le procédé

Country Status (2)

Country Link
CN (1) CN102474878B (fr)
WO (1) WO2011020211A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013013390A1 (fr) * 2011-07-26 2013-01-31 Renesas Mobile Corporation Procédé destiné à obtenir une valeur d'avance de synchronisation
US9781717B2 (en) 2012-12-27 2017-10-03 China Academy Of Telecommunications Technology Method, device and system for transmitting uplink information
US20170332425A1 (en) 2016-05-11 2017-11-16 Futurewei Technologies, Inc. System and Method for Relay Device Discovery
EP3606264A4 (fr) * 2017-03-23 2020-07-08 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé d'accès aléatoire, terminal et dispositif de réseau
US11013734B2 (en) 2018-05-16 2021-05-25 Forma Therapeutics, Inc. Treating patients harboring an isocitrate dehydrogenase-1 (IDH-1) mutation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108463004B (zh) 2013-02-22 2023-06-13 华为技术有限公司 一种通信的方法、设备及系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005112498A1 (fr) * 2004-05-14 2005-11-24 Siemens Aktiengesellschaft Procede pour localiser un terminal de radiotelephonie mobile dans un reseau de radiotelephonie mobile
CN1937448A (zh) * 2005-09-20 2007-03-28 展讯通信（上海）有限公司 一种新的prach帧结构及其实现方法
CN101064547A (zh) * 2006-04-27 2007-10-31 上海贝尔阿尔卡特股份有限公司 无线接入系统的中继方法及其基站、中继设备和中继系统
CN101123467A (zh) * 2006-08-07 2008-02-13 大唐移动通信设备有限公司 一种增强随机接入方法及装置
CN101483919A (zh) * 2008-01-08 2009-07-15 华为技术有限公司 用于随机接入的无线资源分配方法及基站设备

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101448325B (zh) * 2007-11-27 2012-11-21 电信科学技术研究院 一种随机接入过程中的处理方法和基站

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005112498A1 (fr) * 2004-05-14 2005-11-24 Siemens Aktiengesellschaft Procede pour localiser un terminal de radiotelephonie mobile dans un reseau de radiotelephonie mobile
CN1937448A (zh) * 2005-09-20 2007-03-28 展讯通信（上海）有限公司 一种新的prach帧结构及其实现方法
CN101064547A (zh) * 2006-04-27 2007-10-31 上海贝尔阿尔卡特股份有限公司 无线接入系统的中继方法及其基站、中继设备和中继系统
CN101123467A (zh) * 2006-08-07 2008-02-13 大唐移动通信设备有限公司 一种增强随机接入方法及装置
CN101483919A (zh) * 2008-01-08 2009-07-15 华为技术有限公司 用于随机接入的无线资源分配方法及基站设备

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013013390A1 (fr) * 2011-07-26 2013-01-31 Renesas Mobile Corporation Procédé destiné à obtenir une valeur d'avance de synchronisation
US9474081B2 (en) 2011-07-26 2016-10-18 Broadcom Corporation Method for obtaining a timing advance value
US9781717B2 (en) 2012-12-27 2017-10-03 China Academy Of Telecommunications Technology Method, device and system for transmitting uplink information
CN103906134B (zh) * 2012-12-27 2018-07-20 电信科学技术研究院 一种传输上行信息的方法、设备及系统
US20170332425A1 (en) 2016-05-11 2017-11-16 Futurewei Technologies, Inc. System and Method for Relay Device Discovery
WO2017193813A1 (fr) * 2016-05-11 2017-11-16 Huawei Technologies Co., Ltd. Système et procédé de découverte de dispositif relais
US10292184B2 (en) 2016-05-11 2019-05-14 Futurewei Technologies, Inc. System and method for relay device discovery
EP3606264A4 (fr) * 2017-03-23 2020-07-08 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé d'accès aléatoire, terminal et dispositif de réseau
US11212840B2 (en) 2017-03-23 2021-12-28 Shenzhen Heytap Technology Corp., Ltd. Method for random access, terminal, and network device
US11013734B2 (en) 2018-05-16 2021-05-25 Forma Therapeutics, Inc. Treating patients harboring an isocitrate dehydrogenase-1 (IDH-1) mutation

Also Published As

Publication number Publication date
CN102474878A (zh) 2012-05-23
CN102474878B (zh) 2014-06-25

Similar Documents

Publication Publication Date Title
JP7405911B2 (ja) 無線通信システム、基地局
KR102542893B1 (ko) 무선 통신 시스템에서 릴레이의 업링크 버퍼 상태 보고서를 전달하는 방법 및 장치
TW202234935A (zh) 用於側行鏈路的通道佔用時間（ｃｏｔ）共享
US11711721B2 (en) Method and apparatus for triggering uplink buffer status report in a wireless communication system
JP2025038191A (ja) 第１通信端末装置、第２通信端末装置、基地局装置、及び、通信システム
US20070298778A1 (en) Efficient Acknowledgement Messaging in Wireless Communications
EP3512267A1 (fr) Procédé de transmission de signal de synchronisation de liaison latérale exécuté par un terminal dans un système de communications sans fil, et terminal utilisant ledit procédé
US20090088165A1 (en) Relay station, base station and method for extending a coverage area of a base station in a radio network
JP6663036B2 (ja) 無線通信システムにおける接続を管理するためのシステムおよび方法
CN106888494A (zh) 一种用于选择中继ue的方法、装置和系统
CN107431980A (zh) 用户终端以及无线通信方法
JP2014527763A (ja) 無線通信システムおよび方法
KR20170132276A (ko) 데이터 전송 방법, 사용자 장비, 및 기지국
EP3136785B1 (fr) Procédé de transmission de données et station de base
JP2025084881A (ja) 通信端末装置および通信システム
CN102474878B (zh) 随机接入方法和使用该方法的基站、中继节点和系统
EP4319429A1 (fr) Système de communication et station de base
KR20230147612A (ko) 통신 시스템 및 기지국
KR20160013508A (ko) 비면허대역 셀에서 업링크 데이터를 전송하는 방법 및 그 장치
CN116868593A (zh) 通信系统及通信终端
KR102604255B1 (ko) 무선 통신 시스템에서 단말 간 통신을 위한 접속 제어 방법 및 장치
WO2020091650A1 (fr) Détermination de temps fixé pour une transmission
KR101952725B1 (ko) 무선 프레임의 제어 신호를 이용한 서브 프레임 주기 결정 방법 및 이를 지원하는 장치
WO2025146774A1 (fr) Système de communication
EP4595274A1 (fr) Indication de faisceau pour configurer un répéteur commandé par réseau pour une liaison d'accès

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200980160549.4

Country of ref document: CN

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

Ref document number: 09848352

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: 09848352

Country of ref document: EP

Kind code of ref document: A1