WO2011097806A1 - Transmission de données axée sur la résolution de conflits - Google Patents

Transmission de données axée sur la résolution de conflits Download PDF

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Publication number
WO2011097806A1
WO2011097806A1 PCT/CN2010/070644 CN2010070644W WO2011097806A1 WO 2011097806 A1 WO2011097806 A1 WO 2011097806A1 CN 2010070644 W CN2010070644 W CN 2010070644W WO 2011097806 A1 WO2011097806 A1 WO 2011097806A1
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WIPO (PCT)
Prior art keywords
data
base station
contention
new
data transmission
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PCT/CN2010/070644
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English (en)
Chinese (zh)
Inventor
杨涛
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上海贝尔股份有限公司
阿尔卡特朗讯
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.)
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Application filed by 上海贝尔股份有限公司, 阿尔卡特朗讯 filed Critical 上海贝尔股份有限公司
Priority to CN201080056365.6A priority Critical patent/CN102714860B/zh
Priority to PCT/CN2010/070644 priority patent/WO2011097806A1/fr
Publication of WO2011097806A1 publication Critical patent/WO2011097806A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • 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

Definitions

  • the present invention relates to wireless communication, as it relates to contention based data transmission in a wireless communication network. Background technique
  • the upsizing based on the competition is a solution of the work project, mainly to speed up the transition from the dormant state to the active state.
  • the basic idea of the scheme based on the competitive uplink transmission is that when there is an idle uplink resource, the base station sends a common resource allocation command for the contention-based access, which has the advantage of saving the scheduling request time, but the problem It has appeared that if the first transmission fails, since the base station cannot recognize the information sent by that mobile station, how to perform retransmission is a problem. Summary of the invention
  • the present invention proposes a technical solution for contention-based uplink transmission in one embodiment:
  • the base station embeds in its resource allocation command based on a contention-based wireless network temporary identity whether the allocated resource is used for new data.
  • the transmitted information after receiving the resource allocation command, the user terminal performs new data transmission or retransmission according to information indicating whether the allocated resource is used for new data transmission.
  • a contention-based data transmission control method in a base station of a wireless communication network comprising the steps of: broadcasting a resource allocation command based on a contention-based wireless network temporary identification And the resource allocation command includes information indicating that the allocated resource is used for new data transmission; receiving data from the user terminal on the allocated resource; verifying whether the data is correctly received; and the allocated resource The verification result is broadcast on the corresponding downlink channel.
  • the base station determines if there are still idle uplink resources for contention based data transmission; if there are still idle uplink resources for contention based data transmission, and the verification result indicates an erroneous reception
  • the data broadcasts a new resource allocation command based on the contention-based wireless network temporary identity, the new resource allocation command including information indicating that the allocated resource is used for the data retransmission.
  • the base station in the case where the base station receives data for the first time, the base station further distinguishes whether the error is caused by a poor link quality or a collision. If the error is caused by poor link quality, data retransmission is performed, and if the error is caused by a collision, no retransmission is performed.
  • a contention-based data transmission method in a user terminal of a wireless communication network comprising the steps of: receiving a contention-based wireless network temporary identification from a base station a resource allocation command, the resource allocation command includes information indicating that the allocated resource is for new data transmission; transmitting data to the base station on the allocated resource; and a downlink channel corresponding to the allocated resource A verification result from the base station indicating whether it correctly received the data is received.
  • a contention-based data transmission control apparatus in a base station of a wireless communication network, comprising: a broadcast apparatus for broadcasting a wireless network temporary identification based on a contention based a resource allocation command, the resource allocation command includes information indicating that the allocated resource is used for new data transmission; a first receiving device, configured to receive data from the user terminal on the allocated resource; and a verification device, And verifying whether the data is correctly received.
  • the broadcast apparatus is further configured to: broadcast the verification result on a downlink channel corresponding to the allocated resource.
  • a contention-based data transmission apparatus in a user terminal of a wireless communication network, comprising: second receiving means for receiving a contention based based on a base station a resource allocation command of the wireless network temporary identifier, where the resource allocation command includes information indicating that the allocated resource is for new data transmission; and a transmitting device, configured to transmit data to the base station on the allocated resource;
  • the second receiving device is further configured to: on a downlink channel corresponding to the allocated resource A verification result from the base station indicating whether it correctly received the data is received.
  • the method and apparatus of the present invention provides an efficient solution for contention-based uplink data transmission. Moreover, the method and apparatus of the present invention support both HARQ retransmissions and one transmission of data (i.e., no retransmissions). With the method and apparatus of the present invention, the base station can adaptively decide whether to support HARQ retransmission, improve contention-based data transmission efficiency and spectrum utilization, and support backward compatibility.
  • FIG. 1 is a diagram showing an application scenario of a wireless communication system 100 in accordance with an embodiment of the present invention
  • FIG. 2 is a flow chart of a method for controlling data transmission based on contention in a wireless communication base station according to an embodiment of the present invention
  • FIG. 3 is a flow chart showing a process for controlling a data retransmission by a base station in a base station of a wireless communication network for transmitting a first transmission error based on contention in accordance with an embodiment of the present invention
  • Figure 4 is a variation of steps S310, S321, S331, and S332 shown in Figure 3 in accordance with an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a subsequent processing flow in a base station for use in a base station of a wireless communication network for the first time when contention based data transmission is correct, in accordance with an embodiment of the present invention
  • FIG. 6 is a structural block diagram of a contention-based data transmission control apparatus in a base station of a wireless communication network according to an embodiment of the present invention
  • Figure 7 is a block diagram showing the structure of a contention-based data transmission device in a user terminal of a wireless communication network
  • FIG. 1 shows an application scenario diagram of a wireless communication system 100 according to an embodiment of the present invention.
  • a base station 110 and user terminals 121 and 122 are included.
  • base station 1 10 will typically have more user terminals, as shown in Figure 1 for the sake of clarity, only two are shown.
  • the base station 110 finds that if it has more idle uplink resources, it initiates a contention-based uplink transmission, which has the advantage of not waiting for the uplink transmission scheduling time, and the uplink data transmission is very fast.
  • the base station 110 allocates one or more radio network temporary identifiers for the contention-based uplink transmission, which is called a Contention Based Radio Network Temporary Identifier.
  • the base station 110 temporarily identifies one or more of the wireless networks it supports in the cell for broadcast so that all user terminals under its jurisdiction are aware.
  • the number of contention-based wireless network temporary identities depends on the amount of free upstream resources.
  • identifying a radio resource generally includes both time domain and frequency domain information, for the LTE-A uplink wireless communication system, due to data There are strict time interval provisions for the transmission and reception of signaling. Therefore, the resources here mainly refer to frequency resources, which can be identified by the resource block ID (corresponding to the frequency domain information).
  • the identification of resources is identified by the resource block ID.
  • FIG. 2 is a flowchart of a method for controlling data transmission based on contention in a wireless communication base station according to an embodiment of the present invention.
  • the application scenario shown in FIG. 1 is used in the following, based on a flow in FIG. Detailed instructions are given.
  • the base station 110 broadcasts a resource allocation command 130 based on a contention-based wireless network temporary identifier 150, the resource allocation command including information indicating that the allocated resource 160 is used for new data transmission.
  • one bit may be used to indicate whether the allocated resource 160 is used for new data transmission information, which may be referred to as a New Data Indicator (NDI).
  • NDI New Data Indicator
  • the new data indicator is "for the new data transfer and "0" for the data retransmission.
  • the meaning of the resource allocation command 130 based on a contention-based wireless network temporary identifier described herein means that the contention-based wireless network temporary identifier is implicit in the CRC check bit of the resource allocation command, and the resource allocation command is specific.
  • the content is scrambled based on the scrambling code of the identifier, etc., for details, refer to 3GPP TS 36.211, which will not be described in detail herein.
  • Both the user terminal 121 and the user terminal 122 have received the resource allocation command 130 described above. If the user terminal 122 does not have new data to transmit to the base station 110, the user terminal 122 does not demask with one or more of the contention-based wireless network temporary identifications it knows and the CRC of the resource allocation command.
  • the user terminal 121 can use the one or more contention-based wireless network temporary identifiers that it knows and the CRC of the resource allocation command to perform demasking. There are competitive transmission-based uplink transmission resources available.
  • the user terminal 121 then performs physical layer processing such as decoding on the PDCCH to obtain allocated resource information (e.g., identification of resource blocks), modulation and coding scheme (MCS), and the like.
  • allocated resource information e.g., identification of resource blocks
  • MCS modulation and coding scheme
  • step S202 the user terminal 121 transmits the data 140 to the base station 110 on the resource 160 allocated by the resource allocation command 130.
  • the user terminal 121 transmits data 140 to the base station 110 based on the contention-based wireless network temporary identity 150 that decoded the resource allocation command 130, that is, the 16-bit CRC check bits of the data 140 and the 16-bit based
  • the competing wireless network temporary identifier 150 performs an exclusive OR operation and transmits as a new check bit, and uses the contention-based wireless network temporary identifier 150 to scramble the data and the like.
  • the user terminal 121 sets its Cell Radio Network Temporary Identifier (C-RNTI) It is placed in the MAC CE (control element) so that the base station 110 knows that the data 140 is from the user terminal 121 after correctly decoding the data 140.
  • C-RNTI Cell Radio Network Temporary Identifier
  • Base station 110 receives data from user terminal 121 on resource 160 allocated by resource allocation command 130. At this time, the base station 110 does not know that the data is from the user terminal 121 before the data 140 is decoded.
  • the base station 110 uses the contention-based wireless network temporary identity 150 to decode the received on the resource 160. Data 140.
  • step S203 the base station 110 verifies whether the received data 140 is correct.
  • the base station 110 verifies the data 140 based on the check coding rules employed by the user terminal 121. As described above, if the user terminal 121 employs CRC encoding, the base station 110 applies a CRC check to the data 140 to verify that the received data 140 is correct. Specifically, how to perform CRC coding and verification is common knowledge in the art, and the present invention will not be repeated herein.
  • step S204 the base station 110 broadcasts the verification result of the data 140 on the downlink channel corresponding to the resource 160.
  • the verification result broadcast by the base station 110 is an ACK message; if the data 140 is received incorrectly, the message broadcast by the base station 110 is a NACk message.
  • the user terminal 121 receives the verification result on the downlink channel corresponding to the resource 160, that is, whether the data 140 is correctly received by the base station 110.
  • a contention-based data transmission has been completed between the base station 110 and the user terminal 121.
  • the base station 110 still verifies in step S203 whether the received data 140 is correct. Of course, in this case, the verification result of the base station 110 should be an error.
  • the base station 110 can further determine whether the error is due to no user terminal transmitting on the allocated resource 160.
  • the data is caused; if the error is caused by no user terminal transmitting data on the allocated resource, the base station 110 does not perform any operation on the data transmission, and does not perform step S204. If there are still new idle uplink resources available for contention based data transmission, the base station 110 repeats the steps of FIG. 2 from step S201.
  • the base station 110 can determine whether the error is caused by no user terminal transmitting data on the allocated resource 160 by detecting the strength of the signal carrying the data 140. If the signal strength is lower than a third predetermined threshold, the base station 110 The determination is due to no user terminal transmitting data on the allocated resources. If the signal strength is above a third predetermined threshold, base station 110 determines that a user terminal is transmitting data 140 on allocated resource 160. Third predetermined threshold
  • the base station 110 determines that the user terminal transmits the data 140 on the allocated resource 160, the subsequent processing will be described in detail. It should be noted that the base station 110 can also directly perform the subsequent processing steps described below without determining whether the verification error is caused by no user terminal transmitting data on the allocated resource 160. If the number of transmissions of the data set by the base station 110 is only one time, in the case where the verification result of the data 140 by the base station 110 is an error, the user terminal 121 does not receive the verification result indicating that the base station 110 erroneously receives the data 140. The error may be found by a higher layer, such as the RLC, without any operation; or the user terminal 121 notifies the higher layer of the user terminal, such as a Radio Link Controller (RLC), that the data 140 needs to be retransmitted.
  • RLC Radio Link Controller
  • the base station 110 and the user terminal 121 support HARQ-based automatic retransmission, the base station 110 erroneously receives the data 140, i.e., if the verification result is incorrect, the retransmission process of the data 140 is also included.
  • the retransmission process of data 140 is slightly different depending on whether there are free resources for uplink transmission and the reasons for the error.
  • FIG. 3 is a flow chart showing a process for controlling a data retransmission by a base station in a base station of a wireless communication network for transmitting a first transmission error based on contention-based data, in accordance with an embodiment of the present invention, 1 and 2, the flow shown in Fig. 3 will be described in detail based on Fig. 2 .
  • the base station 110 determines in step S310 whether there are still idle uplink resources. For data transmission based on competition. It should be noted that the idle uplink resource described herein refers to an idle uplink resource that can be used for contention-based data transmission. Sometimes, there may be idle uplink resources, but the base station 110 may not use the idle uplink. Resources are used for content-based data transmission.
  • base station 110 determines the cause of the error, i.e., determines if the error was caused by poor link quality or due to a collision.
  • base station 110 determines the cause of data 140 error by detecting the strength of the signal received on resource 160. If the signal strength is greater than a first predetermined threshold, the error is considered to be caused by the collision.
  • the user terminal 122 after step S201, if the user terminal 122 also has data to transmit to the base station 110, the user terminal 122 also performs the steps performed by the user terminal 121 as described above, and data is generated on the resource 160 to the base station 110. . As a result, a collision occurs.
  • the base station 110 broadcasts a new resource allocation command 131 based on the contention-based wireless network temporary identifier 150, the new resource allocation command including information indicating that the allocated resource is used for new data transmission. .
  • the resources allocated in the new resource command may be resources 160 or other resources.
  • the user terminal 121 After receiving the resource allocation command 131 based on the contention-based wireless network temporary identifier 150, the user terminal 121, on the new resource allocation command 131, according to the information indicating that the allocated resource is used for new data transmission. Perform a new data transfer on the allocated resource. Of course, if the user terminal 121 has no new data to transmit to the base station 110, the user terminal 121 does not respond to the new resource allocation command 131.
  • the base station 110 is again based on the competition.
  • the new resource allocation command 131 identified by the wireless network temporary identifier 150 causes the user terminal 121 to perform transmission of new data. Therefore, the user terminal 121 notifies its radio link controller to perform retransmission of the data 140, that is, the upper layer resolves the problem. Passing the question.
  • the base station 110 determines that the error is caused by poor link quality, then in this case, the base station 110 considers it necessary to perform retransmission of the data 140, and therefore, in step S332, the base station 110 broadcasts a new one based on the Based on the resource allocation command 131 of the contention-based wireless network temporary identifier 150, the new resource allocation command includes information indicating that the allocated resources are used for data retransmission.
  • the resources allocated in the new resource command 131 may be the resource 160 or other resources.
  • the base station 110 may also broadcast another new contention-based wireless network temporary identity when broadcasting the new resource allocation command 131.
  • a resource allocation command 132 of 151, the new resource allocation command includes information indicating that the allocated resource is used for the first transmission of data.
  • the user terminal 121 receives the resource allocation command 131 based on the contention-based wireless network temporary identifier 150, and allocates it on the new resource allocation command 131 according to the information indicating that the allocated resource is used for data retransmission. The retransmission of data 140 is performed on the resource. If the user terminal 121 has new data to transmit to the base station 110, the user terminal 121 performs transmission of new data on the resources allocated by the new resource allocation command 132. If the user terminal 121 has no new data to transmit to the base station 110, the user terminal 121 does not respond to the new resource allocation command 131.
  • the user terminal 122 If the user terminal 122 has data to transmit to the base station 110, the user terminal 122 performs the first transmission of data on the resources allocated by the new resource allocation command 132.
  • step S310 step S321, step S331 or step S332 is in no particular order as the execution of step S204 shown in FIG. 2.
  • step S204 is broadcast in the same physical frame as step S331 or step S332. If the base station 110 determines in step S310 that there are no idle uplink resources for use based on For the data transmission of the contention, in step S322, the cause of the error of the data 140 is determined. Step S322 is the same as step S321, and will not be described in detail herein.
  • step S204 shown in Fig. 2 the base station 110 broadcasts information indicating that the data 140 is correctly received on the downlink channel corresponding to the resource 160, and no new resource allocation command is transmitted.
  • the user terminal 121 receives the verification result in step S204 to instruct the base station 110 to correctly receive the data 140, and does not receive any new resource allocation command, and after the second predetermined time interval, releases the data 140 in the buffer.
  • the specific value of the second predetermined time interval depends on the actual system implementation. For example, in LTE-A, the second predetermined time is determined by the length of time corresponding to the maximum number of HARQ transmissions, or is received by the subsequent based on the basis.
  • the resource allocation command of the competing wireless network identifier 150 and the command indicates the time at which the new data transmission is to be made.
  • step S204 shown in FIG. 2 the base station 110 broadcasts information indicating the erroneous reception data 140 on the downlink channel corresponding to the resource 160, and no longer transmits new information. Resource allocation command.
  • the user terminal 121 receives the verification result in step S204 to instruct the base station 110 to erroneously receive the data 140, and does not receive any new resource allocation command, and retransmits the data on the resource 160 after the first predetermined time interval. 140 to base station 110.
  • the specific value of the first predetermined time interval depends on the actual system implementation. For example, in LTE-A, the first predetermined time interval may take a value of 4 subframes.
  • step S401 the base station 110 It is first determined that there are still idle uplink resources for contention based data transmission. If the base station 110 still has idle uplink resources for contention-based data transmission, the base station 110 does not distinguish the cause of the error, and at least the user terminal 121 performs retransmission of the data 140. At this time, the base station 110 broadcasts a new resource allocation command based on the contention-based wireless network temporary identifier 150 in step S402, the new resource allocation command includes indicating that the allocated resource is used for data 140 retransmission. Information.
  • Figure 5 illustrates a subsequent processing flow in a base station for use in a base station of a wireless communication network for the first time when contention based data transmission is correct, in accordance with an embodiment of the present invention.
  • the flow in FIG. 5 will be described in detail below with reference to the application scenario shown in FIG. 1 and the flow shown in FIG. 2 .
  • step S501 the base station 110 determines whether there are still idle uplink resources for contention based data transmission.
  • step S502 the base station 110 broadcasts a new resource allocation command 131 based on the contention-based wireless network temporary identifier 150, the new The resource allocation command includes information indicating that its allocated resources are used for new data transmission.
  • the user terminal 121 After receiving the new resource allocation command 131 based on the contention-based wireless network temporary identifier 150 from the base station 110, the user terminal 121, according to the information indicating that the allocated resource is used for new data transmission, is new. A new data transfer is performed on the resources allocated on the resource allocation command 131.
  • base station 110 If there are no idle uplink resources for contention based data transmission, then base station 110 does not issue any new resource allocation commands based on any of the competing wireless network temporary identities.
  • the above is mainly based on a contention-based wireless network temporary identifier, and the contention-based data transmission process in the wireless communication system 100 shown in FIG. 1 is described in detail.
  • Those skilled in the art should understand that In the case of multiple contention-based wireless network temporary identifications, the case of data transmission based on each of the contention-based wireless networks's is similar to that described above and will not be described in detail herein.
  • the specific values of the first predetermined threshold and the second predetermined threshold and the third predetermined threshold may vary depending on the specific implementation of the actual system. In one embodiment, the first predetermined threshold and the second predetermined threshold may be the same. Another need to be explained is that the base station 110 determines the cause of the data 140 error is a possible cause, not necessarily the true cause of the error.
  • FIG. 6 is a block diagram showing the structure of a contention-based data transmission control apparatus 600 in a base station of a wireless communication network in accordance with an embodiment of the present invention.
  • the transmission control device 600 includes a broadcasting device 601, a first receiving device 602, and a verification device. 603.
  • the broadcaster 601 broadcasts a resource allocation command 130 based on a contention-based wireless network temporary identifier 150, the resource allocation command including information indicating the allocated resource 160 for new data transmission.
  • the resource allocation command including information indicating the allocated resource 160 for new data transmission.
  • one bit may be used to indicate whether the allocated resource 160 is for new data transmission, the bit may be referred to as a New Data Indicator (NDI).
  • NDI New Data Indicator
  • the new data indicator is "1" for new data transmission and "0" for data retransmission.
  • the resource allocation command 130 based on a contention-based wireless network temporary identity described herein has the same meaning as described above.
  • the first receiving device 602 receives data 140 from the user terminal on the allocated resource 160. At this time, before the data 140 is decoded, the base station 110 does not know which user terminal the data 140 is from.
  • the verification device 603 then verifies whether the data 140 received from the user terminal received on the resource 160 is correctly received.
  • the broadcaster 601 broadcasts the verification result of the authentication device 603 on the downlink channel corresponding to the allocated resource 160.
  • the transmission control device 600 further includes a third determining device (not shown in FIG. 6) for determining that the verification result of the verification device 603 is an error, such as that no user terminal is at the base station 110.
  • the distributed contention-based resource 160 transmits data, and the verification device 603 still verifies that the received data 140 is correct.
  • the verification result should be an error.
  • the third determination device further determines whether the error is due to no user terminal transmitting on the allocated resource 160.
  • the data is caused; if the error is caused by no user terminal transmitting data on the allocated resource, the transmission control device 600 does not perform any operation on the secondary data transmission, and the broadcasting device 601 does not broadcast the verification result. If there are still new idle uplink resources available for contention based data transmission, the broadcast device 601 broadcasts a new resource allocation command for new data transmission, and the first receiving device 602 and the verification device 603 repeatedly execute as above. The operation described.
  • the third determining means may determine whether the error is caused by no user terminal transmitting data on the allocated resource 160 by detecting the strength of the signal of the bearer data 140, if the signal strength is lower than a third predetermined threshold, Then the third determining means determines that no user terminal is transmitting data on the allocated resource. If the signal strength is above the third predetermined threshold, the third determining means determines that the user terminal is transmitting data 140 on the allocated resource 160. Next, when the third determining means determines that the user terminal transmits the data 140 on the allocated resource 160, the subsequent processing of the transmission control device 600 will be described in detail.
  • the transmission control device 600 may of course not directly determine whether the verification error is caused by the fact that no user terminal transmits data on the allocated resource 160, but directly performs the subsequent processing procedure described below. If the transmission control device 600 supports HARQ-based retransmission, the transmission control device further includes a first determining device and a second determining device (not shown in Fig. 6). The first determining means is configured to determine whether there is still an idle uplink resource for the contention based data transmission, and the second determining means is configured to determine the error if the verification result of the data 140 indicates the erroneously received data 140 Whether caused by collision or by poor link quality.
  • the first determining device determines if there are still idle uplink resources for the contention based data transmission. If there are still idle uplink resources for contention based data transmission, the broadcast device 601 broadcasts a new resource based on the contention based wireless network temporary identity 150. With the command, the new resource allocation command includes indicating that the allocated resource is used for the data.
  • the second determining device determines that the error is caused by the collision. Still caused by poor link quality. If the reception error is caused by a collision, a new resource allocation command based on the contention-based wireless network temporary identifier 150 is included, the new resource allocation command including a resource indicating that the allocated resource is used for new data transmission. information. If the reception error is caused by a poor link quantity, a new resource allocation command based on the contention-based wireless network temporary identifier is broadcasted, and the new resource allocation command includes a resource indicating the allocated resource. The information retransmitted in data 140.
  • the second determining means determines that the reception error is caused by a poor The link quality is still caused by the collision. If the second determining means determines that the reception error is caused by a poor link quality, the broadcasting device 601 broadcasts information indicating the error reception data 140 on the downlink channel corresponding to the allocated resource 160. If the second determining means determines that the reception error is caused by the collision, the broadcasting device 601 broadcasts information indicating that the data 140 is correctly received on the downlink channel corresponding to the allocated resource 160.
  • FIG. 7 is a block diagram showing the structure of a contention-based data transmission apparatus 700 in a user terminal of a wireless communication network in accordance with an embodiment of the present invention.
  • the data transmission device 700 includes a second receiving device 701 and a transmission device 702.
  • the data transmission located in the user terminal 121 is combined with the application scenario shown in FIG. 1 below.
  • the working process of the device 700 will be described in detail.
  • the second receiving device 701 receives a resource allocation command 130 from the base station based on a contention-based wireless network temporary identity 150, the resource allocation command 130 including information indicating that the allocated resource 160 is for new data transmission.
  • the resource allocation command 130 including information indicating that the allocated resource 160 is for new data transmission.
  • one bit may be used to indicate whether the allocated resource 160 is for new data transmission information, which may be referred to as a New Data Indicator (NDI).
  • NDI New Data Indicator
  • a new data indicator of "1" means for new data transmission and "0" means for data retransmission.
  • the transmitting device 702 transmits the data 140 to the base station 110 on the allocated resource 160.
  • the second receiving device 701 receives, on the downlink channel corresponding to the allocated resource 160, information from the base station 110 indicating whether it correctly received the verification result of the data.
  • the base station 110 supports and performs HARQ retransmission, after the base station 110 erroneously receives the data 140, the retransmission process of the data 140 is also included.
  • the retransmission process of the data transmission device 700 will be described in detail below.
  • the second receiving device 701 receives a new resource allocation command 131 from the base station 110 based on the contention-based wireless network temporary identifier 150, the new resource allocation 131 including the indication
  • the allocated resource is used for the information of the data retransmission, and if the verification result received by the second receiving device 701 indicates that the base station 110 erroneously receives the data 140, the resource allocated by the transmission device 702 on the new resource allocation command 131 The retransmission of the data 140 is performed.
  • the second receiving device 701 receives a new resource allocation command 131 from the base station 110 based on the contention-based wireless network temporary identifier 150, the new resource allocation command 131 including The allocated resource is used for information of new data transmission, and the verification result received by the second receiving device 701 indicates that the base station 110 erroneously receives the data 140, and the transmission device 702 is on the resource allocated on the new resource allocation command 131. Perform a new data transfer.
  • the data transmission device 700 further includes a notification device (not shown in FIG. 7) for notifying the radio link controller of the user terminal to perform retransmission of the data 140.
  • the second receiving device 701 receives a new resource allocation command 131 from the base station 110 based on the contention-based wireless network temporary identifier 150, the new resource allocation command 131 including The allocated resource is used for information of new data transmission, and the verification result received by the second receiving device 701 indicates that the base station 1 10 correctly receives the data 140, and the transmission device 702 is on the resource allocated on the new resource allocation command 131. Perform the transfer of new data.
  • the transmission is performed.
  • the device 702 retransmits the data 140 to the base station 110 on the allocated resource 160. If the verification result indicates that the base station 110 correctly received the data 140, the transmission device 702 releases the data 140 in the buffer after the second predetermined time interval.
  • the specific value of the first predetermined time interval and the second predetermined time interval depends on the actual system implementation.
  • the first predetermined time interval may take a value of 4 subframes
  • the second predetermined time interval may be The value is the time interval corresponding to the maximum number of HARQ retransmissions.
  • any reference signs in the claims should not be construed as limiting the claims; the word “comprising” does not exclude the means or steps that are not listed in the claims or the description; The existence of a plurality of such devices is not excluded; in a device comprising a plurality of devices, the functionality of one or more of the plurality of devices can be implemented by the same hardware or software module; "first”, “second” Words such as “third” are used only to denote names, and do not denote any particular order.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à une solution technique pour une transmission sur la liaison montante axée sur la résolution de conflits. Une station de base émet une commande d'allocation de ressource basée sur un identifiant temporaire d'un réseau radio axé sur la résolution de conflits. Par ailleurs, la station de base insère, dans la commande d'allocation de ressource, les informations qui indiquent si la ressource allouée est utilisée pour une nouvelle transmission de données, ou non. Après qu'un terminal d'utilisateur a reçu la commande d'allocation de ressource, le terminal d'utilisateur exécute, conformément aux informations qui indiquent si la ressource allouée est utilisée pour une nouvelle transmission de données, ou non, une nouvelle transmission de données ou une retransmission de données. Le procédé et le système de la présente invention procurent une solution efficace pour une transmission de données sur la liaison montante axée sur la résolution de conflits. Le procédé et le dispositif de la présente invention prennent aussi bien en charge une retransmission via une demande de répétition automatique hybride (transmission HARQ) qu'une transmission unique de données sans retransmission.
PCT/CN2010/070644 2010-02-11 2010-02-11 Transmission de données axée sur la résolution de conflits WO2011097806A1 (fr)

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CN201080056365.6A CN102714860B (zh) 2010-02-11 2010-02-11 基于竞争的数据传输
PCT/CN2010/070644 WO2011097806A1 (fr) 2010-02-11 2010-02-11 Transmission de données axée sur la résolution de conflits

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107736049A (zh) * 2015-06-26 2018-02-23 华为技术有限公司 上行数据传输的方法和装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019063845A1 (fr) * 2017-09-29 2019-04-04 Sony Mobile Communications Inc. Indicateur de répétition pour un accès à un spectre ouvert

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ETRI: "The handling of CB uplink transmission", 3GPP TSG-RAN WG2 #68BIS R2-100215, 12 January 2010 (2010-01-12), pages 1 - 3, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_68bis/Docs/> *
MEDIATEK ET AL: "Discussion on the Retransmission of Contention-Based Transmissions", 3GPP TSG-RANWG2 #68BIS R2-100174, 12 January 2010 (2010-01-12), pages 2 - 3, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_68bis/Docs> *
SAMSUNG: "Correction to prevent wrong contention resolution by adaptive retransmission command", 3GPP TSG-RAN2#64 MEETING R2-087016, 14 November 2008 (2008-11-14), pages 2 - 3, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_64/Docs> *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107736049A (zh) * 2015-06-26 2018-02-23 华为技术有限公司 上行数据传输的方法和装置
CN107736049B (zh) * 2015-06-26 2020-02-21 华为技术有限公司 上行数据传输的方法和装置

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CN102714860B (zh) 2016-01-13

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