WO2013170640A1 - Procédé et dispositif de sélection de paramètres de transmission en liaison montante - Google Patents

Procédé et dispositif de sélection de paramètres de transmission en liaison montante Download PDF

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Publication number
WO2013170640A1
WO2013170640A1 PCT/CN2013/070215 CN2013070215W WO2013170640A1 WO 2013170640 A1 WO2013170640 A1 WO 2013170640A1 CN 2013070215 W CN2013070215 W CN 2013070215W WO 2013170640 A1 WO2013170640 A1 WO 2013170640A1
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Prior art keywords
uplink transmission
transmission parameter
base station
data
level value
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PCT/CN2013/070215
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English (en)
Chinese (zh)
Inventor
李强
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华为技术有限公司
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Publication of WO2013170640A1 publication Critical patent/WO2013170640A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to an uplink transmission parameter selection method and device. Background technique
  • the radio link conditions between the transmitter and the receiver change over time, and the conditions are different in different frequency bands.
  • the quality of the link conditions determines the amount of data that can be carried. If the link conditions are good, more data can be transmitted, and if the link conditions are poor, only a lower amount of data can be transmitted.
  • Link adaptation techniques are designed to improve transmission efficiency for the time-frequency variation characteristics of wireless links.
  • the link adaptation technology mainly includes the following steps: First, the base station measures the signal strength of the user equipment (User Equipment, UE) to the base station (may be determined by the channel coefficient or The channel matrix is characterized, and the interference level value and the noise level value are measured.
  • the base station schedules the user according to the signal strength, the interference level value and the noise level value, allocates a certain time-frequency resource to the user, and calculates a suitable current link.
  • Uplink transmission parameters include a Rank Indication (RI), a Precoding Matrix Indication (PMI), and a Channel Quality Indicator (CQI); again, the time-frequency resource to be allocated by the base station
  • RI Rank Indication
  • PMI Precoding Matrix Indication
  • CQI Channel Quality Indicator
  • the uplink transmission parameter is selected according to the interference level value measured by the scheduling time, etc., but the scheduling time and the time when the UE actually uploads the data are delayed, and the link quality of the two times is different.
  • the interference level values of the two times have large differences, then the uplink transmission parameters selected at the scheduling time are inappropriate, which affects the uplink transmission performance. Summary of the invention The embodiment of the invention provides a method and a device for selecting an uplink transmission parameter, which are used to select a more suitable uplink transmission parameter and improve uplink transmission performance.
  • the embodiment of the present invention provides a method for selecting an uplink transmission parameter, including: acquiring a scheduling situation of a neighboring base station;
  • the first interference level value is an interference level value received by the first user equipment UE from the second UE when the uplink data is transmitted, where the first UE is the base station a serving UE, the second UE is a UE served by the neighboring base station; a signal strength from the first UE detected by the local base station, a noise level value of the local base station, and the first Interference level value, determining a first uplink transmission parameter;
  • an embodiment of the present invention provides a method for selecting an uplink transmission parameter, including: receiving downlink control signaling sent by a base station;
  • the first uplink transmission parameter is a signal strength from the first user equipment UE detected by the base station, a noise level value of the base station
  • the first interference level is an interference level value received by the first UE from the second UE when the uplink data is transmitted, where the first UE is a UE served by the base station, The second UE is a UE serving a neighboring base station of the base station;
  • the data corresponding to the first uplink transmission parameter is sent to the base station.
  • an embodiment of the present invention provides an uplink transmission parameter selection device, including: an obtaining module, configured to acquire a scheduling situation of a neighboring base station;
  • a first determining module configured to determine, according to the scheduling situation, a first interference level value, where the first interference level value is an interference level value received by the first user equipment UE from the second UE during uplink data transmission, where The first UE is a UE served by the base station, and the second UE is a UE served by the neighboring base station;
  • a second determining module configured to determine, according to the signal strength from the first UE, the noise level value of the local base station, and the first interference level value detected by the local base station, a first uplink transmission parameter;
  • a sending module configured to send downlink control signaling to the first UE, to indicate that the first UE transmits uplink data corresponding to the first uplink transmission parameter during uplink data transmission.
  • an embodiment of the present invention provides an uplink transmission parameter selection device, including: a receiving module, configured to receive downlink control signaling sent by a base station;
  • a determining module configured to determine, according to the downlink control signaling, data corresponding to the first uplink transmission parameter, where the first uplink transmission parameter is based on a signal strength of the first user equipment UE detected by the base station, and the base station And determining, by the first interference level, the interference level value from the second UE that is received by the first UE during uplink data transmission, where the first UE is the a UE served by the base station, where the second UE is a UE of a neighboring base station of the base station;
  • a transmitting module configured to send data corresponding to the first uplink transmission parameter to the base station during uplink data transmission.
  • the embodiment of the present invention determines the first uplink transmission parameter according to the interference level value of the UE during uplink data transmission, and uses the first uplink transmission parameter to transmit data, because the uplink transmission parameter is transmitted according to the uplink data.
  • the uplink transmission parameters determined by the interference rather than the scheduling, improve the uplink transmission performance.
  • FIG. 1 is a schematic flowchart of an embodiment of an uplink transmission parameter selection method according to the present invention
  • FIG. 2 is a schematic diagram of interference in an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another embodiment of an uplink transmission parameter selection method according to the present invention
  • FIG. 4 is a schematic flowchart of another embodiment of an uplink transmission parameter selection method according to the present invention
  • FIG. 6 is a schematic flowchart of another embodiment of an uplink transmission parameter selection method according to the present invention
  • FIG. 7 is a schematic flowchart of an embodiment of an uplink transmission parameter selection device according to the present invention
  • FIG. 8 is a schematic structural diagram of another embodiment of an uplink transmission parameter selection device according to the present invention.
  • 1 is a schematic flowchart of an embodiment of an uplink transmission parameter selection method according to an embodiment of the present invention, including: Step 11: A base station acquires a scheduling situation of a neighboring base station;
  • the base station can measure the signal strength of the UE to the base station, and can also measure the interference level value and the noise level value of the scheduling level. After that, the base station can estimate the user according to the signal strength, the interference level, and the noise level.
  • the allocated time-frequency resources can be represented by a Physical Resource Block (PRB). Therefore, the base station can determine which PRBs are allocated to the UE when scheduling.
  • PRB Physical Resource Block
  • the scheduling situation of a base station includes resources allocated by the base station for communication for at least one UE served by the base station.
  • the neighboring base stations can obtain the scheduling of the other party through interaction, for example, through the X2 interface, which PRBs are allocated to which UEs are used by the neighboring base stations.
  • Step 12 The base station determines, according to the scheduling situation, a first interference level value, where the first interference level value is an interference level value received by the first UE from the second UE when the uplink data is transmitted, the first UE a UE serving the base station, where the second UE is a UE served by the neighboring base station;
  • the base station may determine the interfering user of the UE in the cell according to the scheduling situation of the neighboring base station, where the user may also be referred to as the UE; for example, referring to FIG. 2, including two base stations and three users, respectively, the base station 1 and the base station 2 and user 1, user 2 and user 3, user 1 is a user serving base station 1, user 2 and user 3 are users serving base station 2. Assuming that the time-frequency resource allocated by the base station 1 to the user 1 is PRB 1 and the time-frequency resource allocated by the base station 2 to the user 2 is also PRB 1, then for the user 1, the user 2 is the interfering user.
  • the interference level value can be obtained by monitoring the value of the interfering user, wherein the monitoring value of the interfering user can be monitored in advance; for example, the base station monitors the measurement reference signal from each user in real time ( Sounding Reference Signal, SRS), performs signal strength measurement and records. After determining the interference user, the signal strength value measured according to the corresponding SRS is determined as the interference level value.
  • the first interference level value is an interference level of the second UE that is monitored by the second UE when the base station does not schedule the first UE, and may The interference level value of the second UE to the first UE that is monitored by the base station in real time after the scheduling of the first UE is completed. When the first UE is not scheduled, the base station may also detect the first interference level value, and use the first interference level value as the interference level value received by the second UE when the UE uplink data is transmitted.
  • Step 13 The base station determines, according to the signal strength from the first UE, the noise level value of the local base station, and the first interference level value detected by the local base station, a first uplink transmission parameter.
  • the base station can obtain the signal strength of the signal sent by the UE served by the base station when it arrives at the base station, that is, obtain the signal strength from the first UE detected by the base station; in addition, the base station can also obtain the signal strength from the first UE.
  • the noise level value generated by the device in the base station is obtained as the noise level value of the base station; when different from the prior art, the embodiment of the present invention calculates the uplink transmission parameter, that is, when calculating information such as RI, PMI, CQI, etc.
  • the interference level value is not the interference level value at the time of scheduling.
  • the base station 2 may be a scheduling user at the time of scheduling.
  • the interference level value according to the schedule is specifically based on the signal strength value corresponding to user 3.
  • the interference of the first UE when scheduling the first UE may be different from the interference of the first UE when actually transmitting data.
  • the uplink transmission parameter is selected according to the interference level value of the first UE when transmitting data in the uplink. To be accurate.
  • Step 14 The base station sends downlink control signaling to the first UE to indicate the first
  • the UE transmits uplink data corresponding to the first uplink transmission parameter during uplink data transmission.
  • the downlink control signaling may include the first uplink transmission parameter.
  • the UE may use the first uplink transmission parameter to generate data corresponding to the original data, and then send the corresponding uplink data, and then send the downlink control signaling.
  • the indication information may be included for instructing the UE to upload a data block corresponding to the first uplink transmission parameter, and the UE has previously generated a plurality of data blocks, so that the UE transmits the data block corresponding to the first uplink transmission parameter. For details, see the following embodiments.
  • the process performed by the UE side may include:
  • Step 31 The first UE receives downlink control signaling sent by the base station.
  • the first UE is a UE served by the base station.
  • Step 32 The first UE determines, according to the downlink control signaling, data corresponding to the first uplink transmission parameter, where the first uplink transmission parameter is based on a signal strength detected by the base station from the first UE, and the base station Determining, by the noise level value and the first interference level value, the first interference level value is an interference level value received by the first UE from the second UE when the uplink data is transmitted, where the first UE is the base station a serving UE, where the second UE is a UE served by a neighboring base station of the base station;
  • Step 33 The first UE sends data corresponding to the first uplink transmission parameter to the base station during uplink data transmission.
  • the first UE performs data generation on the original data by using the first uplink transmission parameter, and obtains an uplink corresponding to the first uplink transmission parameter.
  • Data data generation, for example, including loop check
  • the first UE receives the indication information sent by the base station, according to the The indication information is used to determine data corresponding to the first uplink transmission parameter from the at least two data blocks. At this time, the first UE has previously generated at least two data according to at least two sets of upload transmission parameter combinations sent by the base station. Piece.
  • the downlink control signaling may be scrambled by using the group identifier, and the first UE receives the downlink control signaling in the preset subframe and performs descrambling by using the predetermined group identifier to obtain the first UE corresponding.
  • the first uplink transmission parameter or indication information may be scrambled by using the group identifier, and the first UE receives the downlink control signaling in the preset subframe and performs descrambling by using the predetermined group identifier to obtain the first UE corresponding.
  • the first uplink transmission parameter is determined according to the interference level value of the UE during uplink data transmission, and the first uplink transmission parameter is used to transmit data, because the uplink transmission parameter is determined according to interference during uplink data transmission, instead of scheduling. Interference, then there is no delay problem when scheduling and actually transmitting data, and more suitable uplink transmission parameters can be selected to improve uplink transmission performance.
  • Step 41 When scheduling a UE, the base station allocates time-frequency resources for the UE and determines a second uplink transmission parameter.
  • the base station may allocate time-frequency resources to the UE according to the signal strength, the interference level value, and the noise level value.
  • the second uplink transmission parameter is different from the first uplink transmission parameter, and the second uplink transmission parameter is
  • the interference level value according to is the interference level value at the time of scheduling, and the first uplink transmission parameter is based on the interference level value at the time of uplink data transmission.
  • the interference level value at the time of scheduling is a second interference level value, which may be sent by the base station to the UE when scheduling the UE.
  • the interference level value in the uplink data transmission is the first interference level value, which may be the interference level value detected by the base station when not scheduled, such as the interference level value obtained by monitoring the interference situation of other UEs to the UE in real time.
  • Step 42 The base station sends the second uplink transmission parameter to the UE in an uplink scheduling command (UL grant).
  • UL grant uplink scheduling command
  • Step 43 The base station acquires a scheduling situation of the neighboring base station, and determines a first uplink transmission parameter according to the scheduling situation.
  • the process of determining the first uplink transmission parameter may be specifically referred to the previous embodiment.
  • Step 44 The base station carries the first uplink transmission parameter in the adjustment signaling and sends the signal to the UE.
  • the foregoing UL grant and the adjustment signaling may be Downlink Control Information (DCI), and the DCI format4 may be specifically used.
  • DCI Downlink Control Information
  • the UE After receiving the adjustment signaling, the UE performs uplink transmission parameter adjustment, and adjusts the second uplink transmission parameter to the first uplink transmission parameter.
  • Step 45 The UE transmits uplink data according to the first uplink transmission parameter during uplink data transmission.
  • the base station first sends an uplink transmission parameter to the UE, and then adjusts the uplink transmission parameter as an example.
  • the base station may send only the adjusted uplink transmission parameter to the UE, that is, the base station does not send the second uplink transmission parameter to the UE when scheduling, but only when determining the first uplink transmission parameter.
  • the uplink transmission parameters are sent to the UE.
  • the UE may use the more suitable uplink transmission parameters to transmit uplink data, thereby improving uplink transmission performance.
  • FIG. 5 is a schematic flowchart of another embodiment of an uplink transmission parameter selection method according to the present invention, including: Step 51: When scheduling a UE, the base station allocates time-frequency resources for the UE and determines multiple sets of uplink transmission parameter combinations.
  • the previous embodiment determines a set of uplink parameter combinations (RI/PMI/CQI) according to the interference level value at the time of scheduling; and this embodiment determines multiple sets of RI/PMI for each UE. /CQI, such as RI1/PMI1/CQI1 and RI2/PMI2/CQI2.
  • RI/PMI/CQI uplink parameter combinations
  • multiple sets of uplink parameter combinations may be determined according to various possible interference level values, for example, as shown in FIG. In the scenario, the base station 1 can determine the corresponding combination when the interference is the user 2, respectively.
  • Step 52 The base station sends multiple sets of uplink transmission parameters in the uplink scheduling command (UL grant) to the UE.
  • Step 53 The UE separately generates a plurality of data blocks according to the uplink transmission parameter combination.
  • data block 1 is generated based on the original data and RI1/PMI1/CQI1
  • data block 2 is generated based on the original data and RI2/PMI2/CQI2.
  • Step 54 The base station acquires a scheduling situation of the neighboring base station, and determines a first uplink transmission parameter according to the scheduling situation.
  • Step 55 The base station sends the adjustment signaling to the UE, where the indication information is used to indicate that the UE selects a data block corresponding to the first uplink transmission parameter.
  • the indication information indicates that the data block 1 is selected.
  • the parameter combination determined in step 51 does not necessarily include the first uplink transmission parameter
  • the data block corresponding to the first uplink transmission parameter refers to the data generated according to the parameter that is closest to the first uplink transmission parameter.
  • Piece For example, RI1/PMI1/CQI1 is not included in a predetermined combination, and RI2/PMI2/CQI2 is the closest in a predetermined combination.
  • the indication information may indicate the data block generated from RI2/PMI2/CQI2.
  • the indication information is not limited to indicating one data block, and may also indicate a plurality of data blocks, for example, a data block generated according to a set number of uplink transmission parameters that are closer to the first uplink transmission parameter.
  • Step 56 The UE transmits the data block indicated by the indication information during uplink data transmission.
  • the UE can transmit the uplink data corresponding to the more suitable uplink transmission parameter, and improve the uplink transmission performance.
  • the adjustment signaling of the embodiment shown in FIG. 4 or FIG. 5 may be scrambled by using the UE id, and then, when receiving the downlink control signaling, the UE performs descrambling with its own UE id to obtain the first uplink. Transfer parameters or indications. That is to say, the foregoing embodiment is used to send the first uplink transmission parameter or the indication information to the UE one by one, and may also be sent by using a group.
  • FIG. 6 is a schematic flowchart of another embodiment of an uplink transmission parameter selection method according to the present invention, including: Step 61: A base station sends downlink control signaling, where the downlink control signaling uses a group identifier to perform scrambling.
  • the downlink control signaling includes a first uplink transmission parameter or indication information corresponding to multiple UEs.
  • UE id scrambling is used, and the downlink control signaling of this embodiment is scrambled with a group identifier (group id).
  • the group identifier may be a function of the subframe number of the scheduling subframe.
  • the UE that is scheduled in the subframe n may belong to the group identifier f(n), and the specific form of f(n) may be set.
  • the group identity may also be separately notified to each UE by the base station.
  • the location of the corresponding downlink control signaling in the group may be sent to the UE together with the second uplink transmission parameter.
  • Step 62 The UE receives the downlink control signaling and uses the group identifier to descramble to obtain the first uplink transmission parameter or the indication information.
  • the UE may receive downlink control signaling in a preset subframe.
  • the base station schedules the UE in the subframe n, and the UE transmits the uplink data in the subframe n+4, and may be preset in the subframe n+2.
  • the downlink control signaling is transmitted.
  • all UEs can receive downlink control signaling in subframe n+2 and use its own group identifier to descramble. If it can successfully descramble, it indicates that it contains its own information, and obtains its own information, such as the first. Uplink transmission parameters or indication information.
  • the downlink control signaling in this embodiment includes information corresponding to multiple UEs, and the location of the information corresponding to each UE may be preset. For example, if a group contains information of three UEs, each of which occupies two bits, the information corresponding to UE1 with the smallest identification number is located in the first two bits, and the information corresponding to UE2 with the identification number in the middle is located in the middle. Two bits, the information corresponding to the UE3 with the largest identification number, is located in the last two bits.
  • Step 63 The UE transmits a data block corresponding to the first uplink transmission parameter to the base station during uplink data transmission.
  • the flow after obtaining the first uplink transmission parameter or indication information may be specifically referred to the embodiment shown in FIG. 4 or FIG. 5.
  • FIG. 7 is a schematic structural diagram of an uplink transmission parameter selection device according to an embodiment of the present invention.
  • the device is located at a base station side, and includes an obtaining module 71, a first determining module 72, a second determining module 73, and a sending module 74.
  • the acquiring module 71 is configured to obtain
  • the first determining module 72 is configured to determine, according to the scheduling situation, a first interference level value, where the first interference level value is received by the UE from the second UE during uplink data transmission.
  • An interference level value the first UE is a UE serving the base station, the second UE is a UE serving the neighboring base station, and the second determining module 73 is configured to detect, according to the base station, the a signal strength of the UE, a noise level value of the local base station, and the first interference level value, determining a first uplink transmission parameter; the sending module 74 is configured to send downlink control signaling to the first UE, to indicate The first UE transmits uplink data corresponding to the first uplink transmission parameter during uplink data transmission.
  • the sending module is specifically configured to: send downlink control signaling to the first UE, where the downlink control signaling includes the first uplink transmission parameter, to indicate that the first UE is in uplink data. And transmitting, by using the first uplink transmission parameter, the uplink data, and transmitting the uplink data to the base station.
  • the device may further include: a first processing module, configured to determine, according to the signal strength, the noise level value, and the second interference level value, a second uplink transmission parameter, and send the signal to the UE, where the second interference level is The value is an interference level value from the second UE that is received by the first UE when being scheduled by the local base station; the sending module is specifically configured to: carry the first uplink transmission parameter in the downlink control The signaling is sent to the first UE, to indicate that the first UE updates the second uplink transmission parameter to the first uplink transmission parameter, and uses the first uplink transmission parameter when uplink data transmission The uplink data is generated and sent to the base station.
  • a first processing module configured to determine, according to the signal strength, the noise level value, and the second interference level value, a second uplink transmission parameter, and send the signal to the UE, where the second interference level is The value is an interference level value from the second UE that is received by the first UE when being scheduled by the local base station
  • the sending module is specifically configured to
  • the device may further include: a second processing module, configured to determine at least two groups of uplink transmission parameter combinations; and send the at least two groups of uplink transmission parameter combinations to the first UE, where the at least two The uplink transmission parameters of the group are used by the UE to generate at least two data blocks, where each group of uplink transmission parameters is used to generate one data block, and the sending module is specifically configured to: carry indication information on the downlink The control signaling is sent to the first UE, where the indication information is used to indicate that the first UE selects one or more data corresponding to the first uplink transmission parameter from the at least two data blocks.
  • the block is uploaded.
  • the sending module is specifically configured to: send information corresponding to multiple UEs to be sent in the downlink control signaling, where the multiple UEs include the first UE, and the downlink control signal The information is scrambled by the group identifier corresponding to the multiple UEs, where the information is the first uplink transmission parameter or indication information for indicating selection of a data block.
  • the location information of the information corresponding to each of the multiple UEs in the downlink control signaling is sent to the first UE together with the second uplink transmission parameter, where the second uplink transmission parameter is Determining and transmitting to the first UE according to the signal strength, the noise level value, and the second interference level value, where the second interference level value is received by the first UE when being scheduled by the local base station The interference level value of the second UE.
  • the group identifier is sent to each of the multiple UEs, or the group identifier is a function of the subframe number of the subframe in which the local base station schedules the first UE. .
  • the first uplink transmission parameter is determined according to the interference level value of the UE during uplink data transmission, and the first uplink transmission parameter is used to transmit data, because the uplink transmission parameter is determined according to interference during uplink data transmission, instead of scheduling. Interference, then there is no delay problem when scheduling and actually transmitting data, and more suitable uplink transmission parameters can be selected to improve uplink transmission performance.
  • FIG. 8 is a schematic structural diagram of another embodiment of an uplink transmission parameter selection device according to the present invention.
  • the device is located at the UE side, specifically the first UE described below, and the device includes a receiving module 81, a determining module 82, and a transmitting module 83.
  • the first uplink transmission parameter is determined according to the downlink control signaling, and the first uplink transmission parameter is determined according to the base station, and the first uplink transmission parameter is detected according to the base station.
  • the first interference level value is an interference level value received by the first UE from the second UE when the uplink data is transmitted
  • the first UE is a UE served by the base station
  • the second UE is a UE served by a neighboring base station of the base station
  • the transmission module 83 is configured to send the first unit to the base station during uplink data transmission.
  • the downlink control signaling includes the first uplink transmission parameter, where the determining module is specifically configured to: perform data generation on the original data by using the first uplink transmission parameter, to obtain the first uplink.
  • the data corresponding to the transmission parameter is specifically configured to: perform data generation on the original data by using the first uplink transmission parameter, to obtain the first uplink.
  • the device further includes: a processing module, configured to receive at least two uplink transmission parameter combinations sent by the base station, and generate at least two data blocks according to the at least two sets of upload transmission parameter combinations, where each The group uplink transmission parameter is used to generate a data block; the downlink control And the determining module is configured to: determine, according to the indication information, one or more data blocks corresponding to the first uplink transmission parameter from the at least two data blocks as the The data corresponding to the first uplink transmission parameter.
  • a processing module configured to receive at least two uplink transmission parameter combinations sent by the base station, and generate at least two data blocks according to the at least two sets of upload transmission parameter combinations, where each The group uplink transmission parameter is used to generate a data block
  • the downlink control And the determining module is configured to: determine, according to the indication information, one or more data blocks corresponding to the first uplink transmission parameter from the at least two data blocks as the The data corresponding to the first uplink transmission parameter.
  • the device further includes: a descrambling module, configured to perform descrambling on the downlink control signaling by using a group identifier, to obtain information corresponding to the first UE, to obtain information according to the first UE
  • the data corresponding to the first uplink transmission parameter is determined, and the information corresponding to the UE is the first uplink transmission parameter or indication information used to indicate the selected data block.
  • the first UE is location information of the information corresponding to each UE of the multiple UEs received by the second uplink transmission parameter in the downlink control signaling, and the second uplink transmission parameter And determining, according to the signal strength, the noise level value, and the second interference level value, to the first UE, where the second interference level value is received by the first UE when being scheduled by the local base station. Interference level value from the second UE.
  • the first UE is configured to separately receive the group identifier corresponding to the first UE, or the UE is configured to determine its own group identifier according to a function of a subframe number of a subframe in which the base station schedules the first UE.
  • the first uplink transmission parameter is determined according to the interference level value of the UE during uplink data transmission, and the first uplink transmission parameter is used to transmit data, because the uplink transmission parameter is determined according to interference during uplink data transmission, instead of scheduling. Interference, then there is no delay problem when scheduling and actually transmitting data, and more suitable uplink transmission parameters can be selected to improve uplink transmission performance.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the above-described method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

Procédé et dispositif de sélection de paramètres de transmission en liaison montante. Le procédé consiste à: obtenir une condition d'ordonnancement d'une station de base voisine; déterminer une première valeur de niveau d'interférence en fonction de la condition d'ordonnancement, cette valeur étant assumée par un second UE par rapport à un premier équipement utilisateur (UE) pendant la transmission de données en liaison montante, le premier UE étant desservi par une station de base locale et le second UE par la station de base voisine; déterminer un premier paramètre de transmission en liaison montante en fonction de la puissance d'un signal provenant du premier UE et détectée par la station de base locale, d'une valeur de niveau de bruit de la station de base locale, et de la première valeur de niveau d'interférence; et envoyer une signalisation de contrôle de liaison descendante au premier UE de manière à lui donner l'instruction de transmettre des données en liaison montante correspondant au premier paramètre de transmission en liaison montante au cours de la transmission de données en liaison montante. Le procédé de l'invention permet de sélectionner en temps réel un paramètre de transmission en liaison montante plus approprié, ce qui améliore la qualité de transmission en liaison montante.
PCT/CN2013/070215 2012-05-18 2013-01-08 Procédé et dispositif de sélection de paramètres de transmission en liaison montante WO2013170640A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210155274.9A CN103428778B (zh) 2012-05-18 2012-05-18 上行传输参数选择方法和设备
CN201210155274.9 2012-05-18

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WO2013170640A1 true WO2013170640A1 (fr) 2013-11-21

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