WO2015062218A1 - Procédé de transmission de données par voip et station de base - Google Patents

Procédé de transmission de données par voip et station de base Download PDF

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Publication number
WO2015062218A1
WO2015062218A1 PCT/CN2014/075620 CN2014075620W WO2015062218A1 WO 2015062218 A1 WO2015062218 A1 WO 2015062218A1 CN 2014075620 W CN2014075620 W CN 2014075620W WO 2015062218 A1 WO2015062218 A1 WO 2015062218A1
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WIPO (PCT)
Prior art keywords
value
tti
uplink
terminal
tti bundling
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PCT/CN2014/075620
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English (en)
Chinese (zh)
Inventor
曹一卿
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2015062218A1 publication Critical patent/WO2015062218A1/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

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for transmitting VoIP data and a base station. Background technique
  • the research on the uplink coverage enhancement problem is carried out, with the aim of further expanding the uplink coverage, that is, letting the UE (User Equipment, User Equipment/Terminal) transmit within a larger cell coverage area. And to ensure that the UL signal received by the base station has sufficient received signal interference ratio.
  • China Telecom for example, has a mobile network that is a CDMA network, mainly deployed at 800MHz. This frequency has good transmission performance, small attenuation, and large station spacing. 2GHz deployment of TD-LTE networks. However, due to the small number of sites, it is expected that the initial site will be deployed as a common site (the base station of the TD-LTE network and the base station of the CDMA network are established at the same site), as shown in Figure 1.
  • the base station 102 includes a base station of a CDMA network and a base station of a TD-LTE network.
  • the 2 GHz TD-LTE network corresponds to the coverage area 1
  • the 800 MHz CDMA network corresponds to the coverage area 2
  • a ring-shaped coverage hole 3 is generated between the two, in which the UE (as shown in the figure)
  • the channel 104) shown in Figure 1 has poor channel quality.
  • the SINR Signal to Interference plus Noise Ratio
  • the SINR Signal to Interference plus Noise Ratio
  • LTE proposes a method of bundling (Transmission Time Interval). This method bundles multiple consecutive TTIs and sends them to increase the redundancy and reduce the coding rate to increase the received signal interference ratio of the base station and improve the correct reception probability of the base station.
  • the special subframe 202, the uplink subframe 204, and the downlink subframe corresponding to different uplink and downlink configuration information are used.
  • the number of 206s is different to cope with the different business needs of the TDD-LTE system.
  • TDD uses four ⁇ bundles, so that only 0, 1 or 6 can support TTI. Bundle operation, and if other configurations are currently used, TTI bundling cannot be used to ensure that the VoIP call is completed.
  • the present invention is based on the above problem, and proposes a new technical solution, which can flexibly configure the TTI bundling value according to the currently used uplink and downlink configuration information, so as to avoid frequent replacement of the uplink and downlink configuration information to the surrounding cells.
  • Cross interference can flexibly configure the TTI bundling value according to the currently used uplink and downlink configuration information, so as to avoid frequent replacement of the uplink and downlink configuration information to the surrounding cells.
  • the present invention provides a method for transmitting VoIP data, including: receiving a VoIP call request corresponding to any terminal; and determining that the terminal needs to perform a TTI bundling operation on the generated VoIP data packet, acquiring the corresponding ⁇ bundling value of the currently used uplink and downlink configuration information; generating configuration signaling including the TTI bundling value, and transmitting the configuration signaling to the terminal.
  • the corresponding TTI bundling value can be reset, so that the current uplink and downlink can be used.
  • Configuration information dynamically configured for specific use
  • the process of obtaining the TTI bundling value corresponding to the currently used uplink and downlink configuration information includes: acquiring the number of uplink subframes included in a single period corresponding to the currently used uplink and downlink configuration information. In all the preset TTI bundling values, a TTI bundling value less than or equal to the number of the uplink subframes is selected for generating the configuration signaling.
  • each uplink and downlink configuration information is in a 10 ms period, the number of uplink subframes included is constant, so that the number of uplink subframes is greater than or equal to the number of TTI bundles.
  • the TTI bundling operation under the number of TTI bundles.
  • configurations 0, 1, and 6 can support TTI bundling operations; and when the number of bundles is 3, configuration 3 can be supported except for configurations 0, 1, and 6; When the number is 2, only configuration 5 is not supported.
  • the process of obtaining the ⁇ bundling value corresponding to the currently used uplink and downlink configuration information includes: Selecting a TTI bundling value less than or equal to the number of the uplink subframes according to a preset rule, indicating that the terminal performs the bundling operation on the VoIP data packet by using the selected TTI bundling value.
  • the available bundling value is any value in 2-6
  • a value can be selected from which is the TTI bundling value of the application.
  • a specific TTI bundling operation may be performed according to the provisions of the current Rel-8 standard protocol for the TTI bundling operation in the case where the bundling value is 4.
  • the available bundling value is only 2, which can be directly confirmed as the TTI bundling value to be applied.
  • the process of obtaining the ⁇ bundling value corresponding to the currently used uplink and downlink configuration information includes: Selecting, according to a preset rule, a plurality of TTI bundling values that are less than or equal to the number of the uplink subframes, and configuring the selected multiple TTI bundling values to form a bundled array, indicating that the terminal sends the VoIP packet according to the bundled array.
  • All TTIs in the bundle are divided into a plurality of groups, each TTI bundle value in the bundle array corresponds to at least one TTI group of the plurality of TTI groups, and each of the plurality of TTI groups The number of TTIs included The corresponding TTI bundle values are equal.
  • the number and arrangement positions of the TTI groups corresponding to each bundled value may exist in multiple implementation forms.
  • the array ⁇ 2 3 ⁇ , assuming that there are 20 TTIs in total, in one mode, it can be bundled into 7 groups, and each of the groups of 1 group contains 2 groups, and the remaining 6 Each ⁇ group in the ⁇ group contains 3 ⁇ ; in the other way, it can be bundled into 8 ⁇ groups, and each of the 4 ⁇ groups contains 2 ⁇ , and the remaining 4 ⁇ Each group in the group contains 3 ⁇ ; in the other way, it can be bundled into 9 ⁇ groups, and each of the 7 ⁇ groups contains 2 ⁇ , and the remaining 2 ⁇ groups Each ⁇ group contains 3 ⁇ and so on.
  • the order of the plurality of groups is arranged, for example, the above-mentioned total of seven groups are taken as an example, and the group of two groups including the two groups can be combined with the remaining six groups.
  • the ⁇ group constitutes 7 different combinations, such as (2,3,3,3,3,3,3), (3,2,3,3,3,3,3), (3,3,2, 3,3,3,3 ) , ( 3,3,3,2,3,3,3 ) , ( 3,3,3,3,2,3,3 ) , (3,3,3,3,3, 3, 2, 3), (3,3,3,3,3,3,3,2) and so on.
  • a communication standard can be incorporated in advance or a protocol can be formed between the terminal and the base station, so that it can be smoothly executed in the specific implementation.
  • the configuration signaling further includes: a bundling policy, where the bundling policy includes: each ⁇ bundling value in the bundling array and the plurality of ⁇ groups Correspondence between the two.
  • the correspondence between each ⁇ bundle value and a plurality of ⁇ groups includes the number of ⁇ groups corresponding to each ⁇ bundle value described above, and the “arrangement order” between the plurality of ⁇ groups ( The pre-determined order before bundling does not refer to the order after bundling).
  • the bundling array may correspond to a variety of bundling policies, in order to facilitate the execution of the bundling mode on the terminal side, you can directly specify which bundling strategy to use, that is, determine the number of ⁇ groups corresponding to each ⁇ bundle value, and multiple ⁇ groups. The order between the "sequences".
  • the bundling strategy obviously does not have to be specified.
  • the terminal can also be directly from this
  • the bundled value generates a set of random numbers, and bundles the TTIs in the VoIP packets according to the set of random numbers.
  • the VoIP call request is from a wireless mobile communication network, or is initiated by the terminal.
  • the terminal For a VoIP call request from a wireless mobile communication network, that is, a call request from another terminal; for a VoIP call request initiated by the terminal, the terminal needs to initiate a call request to another terminal.
  • the configuration information of the uplink and downlink can be changed, so that the terminal can successfully perform the TTI bundling operation to improve the data transmission quality during the VoIP call.
  • the generating period length of the VoIP data packet corresponds to multiple periods of the current uplink and downlink configuration information
  • the method for transmitting the VoIP data further includes: Whether the number of all the uplink subframes included in the plurality of periods meets the number of all the TTIs in the VoIP data packet is greater than or equal to the number of all the TTIs in the VoIP data packet; if not, the new uplink and downlink configuration information is selected, and the new uplink and downlink configuration is performed.
  • the number of all uplink subframes included in the plurality of periods of the configuration information is greater than or equal to the number of all TTIs in the VoIP data packet; and the new uplink and downlink configuration information and the corresponding TTI bundle value are sent to The terminal.
  • the time period corresponding to the uplink and downlink configuration information in multiple periods should include enough uplink subframe numbers to avoid running in the terminal. Collisions between multiple packets in the same VoIP process.
  • the method further includes: transmitting a transmission repetition period and/or a HARQ (Hybrid Automatic Repeat Request) timing to the terminal; where the transmission repetition period refers to Corresponding to a repetition period of each of the VoIP data packets, the HARQ timing refers to an ACK feedback subframe corresponding to each of the data packets, or a NACK feedback subframe corresponding to each of the data packets, and a retransmission Subframe number.
  • HARQ Hybrid Automatic Repeat Request
  • the transmission repetition period and/or the HARQ timing may be added in the above configuration signaling and sent together with the TTI bundling value; or, may be separately sent by other signaling, for example, the transmission repetition period is signaled 1 Send, send HARQ timing with signaling 2, or pass The transmission repetition period and the HARQ timing are transmitted by the signaling 3 - and are transmitted.
  • the method further includes: acquiring a channel quality parameter corresponding to the terminal; if the value of the channel quality parameter is less than or equal to a preset parameter threshold, determining that the terminal needs to be The VoIP data performs the TTI bundling operation.
  • the channel quality corresponding to the terminal (expressed as the value of the channel quality parameter) may be obtained, so that when the channel quality is poor (expressed as the value of the channel quality parameter is less than or equal to the preset parameter threshold) , Determine the need to perform TTI bundling operations to ensure the smooth execution of VoIP calls.
  • the process of obtaining the channel quality parameter corresponding to the terminal includes: measuring a reference signal sent by the terminal to obtain the channel quality parameter; or receiving a downlink uploaded by the terminal.
  • the measurement report is obtained by obtaining the channel quality parameter from the downlink measurement report.
  • the method further includes: after the terminal performs the TTI bundling operation according to the TTI bundling value, whether the value of the changed channel quality parameter satisfies the preset value If the parameter is not satisfied, the new uplink and downlink configuration information is selected, and the new uplink and downlink configuration information and the corresponding TTI binding value are sent to the terminal; After the information is applied, after the terminal performs the TTI bundling operation according to the corresponding TTI bundling value, the changed value of the channel quality parameter satisfies the preset parameter threshold.
  • the uplink and downlink configuration information supports the preset bundle configuration parameter, for example, when the preset bundle configuration parameter is 2, and the currently used uplink and downlink configuration information is the configuration 2, the TTI can be executed.
  • the bundling operation but the resulting gain does not necessarily enable the terminal to successfully complete the VoIP call. Therefore, by estimating the situation after the completion of the TTI bundling operation, and replacing the uplink and downlink configuration information when the requirements are not met, after the TTI bundling operation is completed, it is possible to truly ensure sufficient gain for the terminal to improve channel quality. And successfully complete the VoIP call.
  • the present invention also provides a base station, including: a request receiving unit, configured to receive a VoIP call request corresponding to any terminal; and a value obtaining unit, configured to perform a TTI bundling operation on the generated VoIP data packet And obtaining a TTI bundling value corresponding to the current uplink and downlink configuration information; a signaling configuration unit, configured to generate configuration signaling that includes the TTI bundling value, and send the configuration signaling to the terminal.
  • the corresponding TTI bundling value can be reset, so that the current uplink and downlink can be used.
  • Configuration information dynamically configured for specific use
  • the TTI bundles the values to minimize the frequent adjustment of the uplink and downlink configuration information to avoid cross interference to surrounding cells.
  • the value obtaining unit is configured to: obtain the number of uplink subframes included in a single period corresponding to the currently used uplink and downlink configuration information, and bind the value in all preset TTIs.
  • the TTI bundling value less than or equal to the number of the uplink subframes is selected for generating the configuration signaling.
  • each uplink and downlink configuration information is in a 10 ms period, the number of uplink subframes included is constant, so that the number of uplink subframes is greater than or equal to the number of TTI bundles.
  • the TTI bundling operation under the number of TTI bundles.
  • configurations 0, 1, and 6 can support TTI bundling operations; and when the number of bundles is 3, configuration 3 can be supported except for configurations 0, 1, and 6; When the number is 2, only configuration 5 is not supported.
  • the value obtaining unit is further configured to: when there are multiple TTI bundling values that are less than or equal to the number of the uplink subframes, select one less than or equal to the preset according to a preset rule.
  • the TTI bundling value of the number of uplink subframes indicates that the terminal performs the bundling operation on the VoIP data packet by using the selected TTI bundling value.
  • the available bundling value is any value of 2-6
  • a value can be selected from which is the applied TTI bundling value.
  • a specific TTI bundling operation may be performed according to the provisions of the current Rel-8 standard protocol for the TTI bundling operation in the case where the bundling value is 4.
  • the available bundling value is only 2, which can be directly confirmed as the TTI bundling value to be applied.
  • the value obtaining unit is further configured to: when there are multiple TTI bundling values that are less than or equal to the number of the uplink subframes, select multiple less than or equal to each other according to a preset rule.
  • TTI bundling value of the number of uplink subframes, and forming a plurality of TTI bundling values to form a bundled array, indicating that the terminal is in the bundled array to divide all TTIs in the VoIP packet into multiple TTI groups,
  • Each TTI bundling value in the bundled array corresponds to at least one TTI group of the plurality of TTI groups, and the number of TTIs included in each of the plurality of TTI groups and the corresponding TTI bundling value equal.
  • the number and arrangement positions of the TTI groups corresponding to each bundled value may exist in multiple implementation forms.
  • the array ⁇ 2 3 ⁇ , assuming that there are 20 TTIs in total, in one mode, it can be bundled into 7 groups, and each of the groups of 1 group contains 2 groups, and the remaining 6 Each ⁇ group in the ⁇ group contains 3 ⁇ ; in the other way, it can be bundled into 8 ⁇ groups, and each of the 4 ⁇ groups contains 2 ⁇ , and the remaining 4 ⁇ Each group in the group contains 3 ⁇ ; in the other way, it can be bundled into 9 ⁇ groups, and each of the 7 ⁇ groups contains 2 ⁇ , and the remaining 2 ⁇ groups Each ⁇ group contains 3 ⁇ and so on.
  • the order of the plurality of groups is arranged, for example, the above-mentioned total of seven groups are taken as an example, and the group of two groups including the two groups can be combined with the remaining six groups.
  • the ⁇ group constitutes 7 different combinations, such as (2,3,3,3,3,3,3), (3,2,3,3,3,3,3), (3,3,2, 3,3,3,3 ) , ( 3,3,3,2,3,3,3 ) , ( 3,3,3,3,2,3,3 ) , (3,3,3,3,3, 3, 2, 3), (3,3,3,3,3,3,3,2) and so on.
  • a communication standard can be incorporated in advance or a protocol can be formed between the terminal and the base station, so that it can be smoothly executed in the specific implementation.
  • the signaling configuration unit is further configured to: add a binding policy to the configuration signaling, where the binding policy includes: A correspondence between each TTI bundle value and the plurality of groups.
  • the correspondence between each ⁇ bundle value and a plurality of ⁇ groups includes the number of ⁇ groups corresponding to each ⁇ bundle value described above, and the “arrangement order” between the plurality of ⁇ groups ( The pre-determined order before bundling does not refer to the order after bundling).
  • the bundling array may correspond to a variety of bundling policies, in order to facilitate the execution of the bundling mode on the terminal side, you can directly specify which bundling strategy to use, that is, determine the number of ⁇ groups corresponding to each ⁇ bundle value, and multiple ⁇ groups. The order between the "sequences".
  • the terminal may directly generate a set of random numbers from the plurality of bundled values, and perform bundle operations on the TTIs in the VoIP packets according to the set of random numbers.
  • the VoIP call request is from a wireless mobile communication network, or is initiated by the terminal.
  • the terminal For a VoIP call request from a wireless mobile communication network, that is, a call request from another terminal; for a VoIP call request initiated by the terminal, the terminal needs to initiate a call request to another terminal.
  • the configuration information of the uplink and downlink can be changed, so that the terminal can successfully perform the TTI bundling operation to improve the data transmission quality during the VoIP call.
  • the generating period length of the VoIP data packet corresponds to multiple periods of the currently used uplink and downlink configuration information
  • the base station further includes: a quantity determining unit, configured to: Determining whether the number of all uplink subframes included in the multiple periods meets the number of all TTIs in the VoIP data packet is greater than or equal to the number of all TTIs in the VoIP data packet; and the information selection unit is configured to select a new uplink and downlink when the content is not satisfied. Configuration information, and the number of all uplink subframes included in the multiple uplink and downlink configuration information in the multiple periods meets greater than or equal to
  • the number of all TTIs in the VoIP data packet wherein the signaling configuration unit sends the new uplink and downlink configuration information and the corresponding TTI bundle value to the terminal.
  • the time period corresponding to the uplink and downlink configuration information in multiple periods should include enough uplink subframe numbers to avoid running in the terminal. Collisions between multiple packets in the same VoIP process.
  • the signaling configuration unit is further configured to: send a transmission repetition period and/or a HARQ timing to the terminal; where, the transmission repetition period refers to corresponding to each The repetition period of the VoIP data packet refers to an ACK feedback subframe corresponding to each of the data packets, or a NACK feedback subframe corresponding to each of the data packets and a retransmission subframe number.
  • the transmission repetition period and/or the HARQ timing may be added in the above configuration signaling and sent together with the TTI bundling value; or, may be separately sent by other signaling, for example, the transmission repetition period is signaled 1 Transmit, send HARQ timing with signaling 2, or transmit transmission repetition period and HARQ timing by signaling 3 - and transmit.
  • the method further includes: a parameter obtaining unit, configured to acquire a channel quality parameter corresponding to the terminal; and a parameter determining unit, configured to: when the value of the channel quality parameter is less than or equal to a preset In the case of the parameter threshold, it is determined that the terminal needs to perform the TTI bundling operation on the VoIP data.
  • the channel quality corresponding to the terminal (expressed as the value of the channel quality parameter) may be obtained, so that when the channel quality is poor (expressed as the value of the channel quality parameter is less than or equal to the preset parameter threshold) , Determine the need to perform TTI bundling operations to ensure the smooth execution of VoIP calls.
  • the parameter obtaining unit is configured to: measure a reference signal sent by the terminal, to obtain the channel quality parameter, or receive a downlink measurement report uploaded by the terminal, The channel quality parameter is obtained in a downlink measurement report.
  • the method further includes: a quality estimation unit, configured to: after the terminal performs a TTI bundling operation according to the TTI bundling value, whether the value of the channel quality parameter is changed And satisfying the parameter threshold that is greater than the preset; the information selecting unit is configured to: when the content is not met, select new uplink and downlink configuration information, and send the new uplink and downlink configuration information and the corresponding TTI bundle value to the The terminal, where the terminal performs the new uplink and downlink configuration information, the terminal performs the foregoing according to the corresponding TTI bundle value. After the bundling operation, the changed value of the channel quality parameter satisfies the preset parameter threshold.
  • the uplink and downlink configuration information supports the preset bundle configuration parameter, for example, when the preset bundle configuration parameter is 2, and the currently used uplink and downlink configuration information is the configuration 2, the TTI can be executed.
  • the bundling operation but the resulting gain does not necessarily enable the terminal to successfully complete the VoIP call. Therefore, by estimating the situation after the completion of the TTI bundling operation, and replacing the uplink and downlink configuration information when the requirements are not met, after the TTI bundling operation is completed, it is possible to truly ensure sufficient gain for the terminal to improve channel quality. And successfully complete the VoIP call.
  • the TTI bundling value can be flexibly configured according to the current uplink and downlink configuration information, so as to avoid cross interference caused by frequent replacement of uplink and downlink configuration information to surrounding cells.
  • FIG. 1 is a schematic diagram showing network coverage in the related art
  • FIG. 2 is a schematic diagram showing a frame structure of uplink and downlink configuration information in the related art
  • FIG. 3 is a flowchart showing a method of transmitting VoIP data according to an embodiment of the present invention
  • FIGS. 4A to 4E are diagrams showing a frame structure of performing a TTI bundling operation with a single bundle value according to an embodiment of the present invention
  • 5A and 5B are diagrams showing a frame structure of a TTI bundling operation performed using a plurality of bundled values, in accordance with an embodiment of the present invention
  • Figure 6 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention
  • FIG. 7 shows a schematic diagram of an interaction configuration between a base station and a terminal according to an embodiment of the present invention. detailed description
  • FIG. 3 shows a flow chart of a method of transmitting VoIP data in accordance with an embodiment of the present invention.
  • a method for transmitting VoIP data includes: Step 302: Receive a VoIP call request corresponding to any terminal;
  • Step 304 If it is determined that the terminal needs to perform a TTI bundling operation on the generated VoIP data packet, obtain a TTI bundling value corresponding to the currently used uplink and downlink configuration information;
  • Step 306 Generate configuration signaling including the TTI bundling value, and send the configuration signaling to the terminal.
  • the corresponding TTI bundling value can be reset, so that the current uplink and downlink can be used.
  • the configuration information is used to dynamically configure the TTI bundle value to minimize the frequent adjustment of the uplink and downlink configuration information to avoid cross interference to surrounding cells.
  • the VoIP call request is from the wireless mobile communication network, or is initiated by the terminal.
  • the terminal For a VoIP call request from a wireless mobile communication network, that is, a call request from another terminal; for a VoIP call request initiated by the terminal, the terminal needs to initiate a call request to another terminal.
  • the configuration information of the uplink and downlink can be changed, so that the terminal can successfully perform the TTI bundling operation to improve the data transmission quality during the VoIP call.
  • the process of obtaining the TTI bundling value corresponding to the currently used uplink and downlink configuration information includes: acquiring the uplink sub-segment included in the single cycle corresponding to the current uplink and downlink configuration information The number of frames; in all the preset TTI bundling values, a TTI bundling value less than or equal to the number of the uplink sub-frames is selected for generating the configuration signaling.
  • each uplink and downlink configuration information is in a 10 ms period, the number of uplink subframes included is constant, so when the number of uplink subframes is greater than or equal to When the number of TTIs is bundled, the TTI bundling operation under the TTI bundle quantity can be ensured.
  • the number of bundles is 4, only configurations 0, 1, and 6 can support
  • TTI bundling operation for the number of bundles is 3, in addition to configuration 0, 1, and 6, configuration 3 can also support; when the number of bundles is 2, only configuration 5 is not supported.
  • Embodiment 1 There is only one available bundle value
  • the available bundling value is only 2, which can be directly confirmed as the TTI bundling value to be applied.
  • Embodiment 2 There are multiple bundled values available
  • the process of acquiring the TTI bundling value corresponding to the currently used uplink and downlink configuration information further includes: selecting a less than or equal to the predetermined rule according to the preset rule.
  • the TTI bundling value of the number of uplink subframes indicates that the terminal performs the bundling operation on the VoIP data packet by using the selected TTI bundling value.
  • the available bundling value is any value in 2-6
  • a value can be selected from which is the TTI bundling value of the application.
  • a specific TTI bundling operation may be performed according to the provisions of the current Rel-8 standard protocol for the TTI bundling operation in the case where the bundling value is 4.
  • the TTI bundling method corresponding to 0 is configured.
  • the subframes with the sequence numbers 2, 3, 4, and 7 correspond to the first group of TTIs in the first cycle; the sequence numbers are 8 and 9 in the first cycle, and the children with sequence numbers 2 and 3 in the second cycle.
  • the frame corresponds to the second group of TTIs; the subframes with the sequence numbers 4, 7, 8, and 9 in the second cycle correspond to the third group of TTIs; in the subsequent cycles, the cells are cyclically arranged and bundled according to the above three TTI groups. .
  • the bundling value is obviously not necessarily 4, that is, it can be other values in 2-6.
  • FIG. 4A shows how to implement TBI binding in a VoIP packet in the case of configuration 0 and a binding value of 5;
  • FIG. 4C shows the case where the configuration 0 and the binding value are 6.
  • the present application shows a specific TTI bundling mode for some of them.
  • FIG. 4D shows how to implement the binding of ⁇ in the VoIP data packet in the case of configuration 3 and the binding value is 2.
  • FIG. 4E shows how to implement the pair in the case of configuration 3 and the binding value is 3.
  • the TTI in the VoIP packet is bundled.
  • the TTI binding mode corresponding to other uplink and downlink configuration information is not mentioned here.
  • the process of acquiring the TTI bundling value corresponding to the currently used uplink and downlink configuration information further includes: selecting multiple less than or equal to the preset according to a preset rule. Determining a TTI bundling value of the number of uplink subframes, and forming a plurality of selected TTI bundling values into a bundled array, indicating that the terminal divides all TTIs in the VoIP data packet into multiple TTI groups according to the bundled array. Each TTI bundling value in the bundled array corresponds to at least one TTI group of the plurality of TTI groups, and the number of TTIs included in each of the plurality of TTI groups and the corresponding TTI bundling value equal.
  • the number and arrangement positions of the TTI groups corresponding to each bundled value may exist in multiple implementation forms.
  • the subframes with the sequence numbers 2, 3, 4, and 7 in the first cycle correspond to the first group of TTIs, and the four ports included therein correspond to the bundle value 4;
  • the subframes with the sequence numbers 8 and 9 in one cycle and the sequence number 2 in the second cycle correspond to the second group ⁇ , and the 3 ⁇ contained therein correspond to the bundle value 3;
  • the sequence numbers 3 and 4 in the second cycle The subframe corresponds to the third group ⁇ , and the two ⁇ contained therein correspond to the binding value 2;
  • the subframes with the sequence numbers 7, 8, and 9 in the second period correspond to the fourth group ⁇ , which includes 3 ⁇ Corresponding to the bundle value 3; in the subsequent cycle, according to the above four groups, the loops are arranged and bundled.
  • FIG. 5A shows a specific case of a ⁇ bundling operation corresponding to the array ⁇ 2, 3, 4 ⁇ , it is obvious that there are many other modes of operation.
  • the number of groups corresponding to each bundle value can be adjusted. Than If the fourth group is adjusted to contain two TTIs, respectively corresponding to the subframes of sequence numbers 7 and 8 in the second period, and the remaining one is classified into the next group.
  • the order between multiple groups can be adjusted.
  • the subframes with the numbers 8 and 9 in the first cycle are corresponding to the second group
  • the subframes with the numbers 2, 3, and 4 in the second period are corresponding to the third group, which is equivalent to The order of the second and third groups in Figure 5 ⁇ is reversed.
  • the number of bundles in the bundled array can also be less, for example 2 .
  • the array ⁇ 2, 3 ⁇ as an example, assuming that there are 20 ⁇ in total (not shown in the figure), in one mode, it can be bundled into 7 ⁇ groups, one of each ⁇ group The ⁇ group contains 2 ⁇ , and each of the remaining 6 ⁇ groups contains 3 ⁇ ; in the other way, it can be bundled into 8 ⁇ groups, and each of the 4 ⁇ groups The group contains 2 ⁇ , and each of the remaining 4 ⁇ groups contains 3 ⁇ ; in the other way, it can be bundled into 9 ⁇ groups, and each of the 7 ⁇ groups contains 2 ⁇ , each of the remaining 2 ⁇ groups contains 3 ⁇ , etc.
  • the order of the plurality of groups is arranged, for example, the above-mentioned total of seven groups are taken as an example, and the group of two groups including the two groups can be combined with the remaining six groups.
  • the ⁇ group constitutes 7 different combinations, such as (2,3,3,3,3,3,3), (3,2,3,3,3,3,3), (3,3,2, 3,3,3,3 ) , ( 3,3,3,2,3,3,3 ) , ( 3,3,3,3,2,3,3 ) , (3,3,3,3,3, 3, 2, 3), (3,3,3,3,3,3,3,2) and so on.
  • the number of bundles in the bundled array can also be more, for example, 5.
  • Figure 5 shows a specific case of performing the ⁇ bundling operation with the array ⁇ 2, 3, 4, 5, 6 ⁇ .
  • the subframes with the sequence numbers 2, 3, 4, 7, 8, and 9 in the first cycle correspond to the first group ⁇ ; the subframes with the sequence numbers 2, 3, 4, 7, and 8 in the second cycle correspond to In the second group, the sequence number is 9, and the subframes with the numbers 2, 3, and 4 in the third period correspond to the third group; the numbers in the third period are 7, 8, and 9.
  • the subframe corresponds to the fourth group ⁇ ; the subframes with the sequence numbers 2 and 3 in the fourth period correspond to the fifth group ⁇ ; the subframes with the sequence numbers 4, 7, 8, and 9 in the fourth period correspond to the sixth frame Group ⁇ ;
  • the cycle is arranged and bundled.
  • the specific combination method can be used.
  • the communication standard in advance or forming an agreement between the terminal and the base station, it can be smoothly executed in the specific implementation.
  • the configuration signaling includes a TTI bundling value to be applied.
  • the configuration signaling further includes: a bundling policy, where the bundling policy includes: a correspondence between each TTI bundling value in the bundled array and the plurality of TTI groups.
  • the correspondence between each TTI bundling value and multiple TTI groups includes the number of TTI groups corresponding to each TTI bundling value described above, and the "arrangement order" between multiple TTI groups ( The pre-determined order before bundling does not refer to the order after bundling).
  • the bundled arrays may correspond to a plurality of bundled policies, in order to facilitate the execution of the bundled mode on the terminal side, the bundled policy may be directly specified, that is, the number of TTI groups corresponding to each TTI bundle value is determined, and multiple TTI groups are determined. The order between the "sequences".
  • the terminal may directly generate a set of random numbers from the plurality of bundled values, and perform bundle operations on the TTIs in the VoIP packets according to the set of random numbers.
  • the configuration signaling may further include: a transmission repetition period and/or a HARQ timing.
  • the transmission repetition period refers to a repetition period corresponding to each of the VoIP data packets
  • the HARQ timing refers to an ACK feedback subframe corresponding to each of the data packets, or corresponds to each of the data.
  • the NACK feedback subframe of the packet and the retransmission subframe number refers to a transmission repetition period and/or a HARQ timing.
  • the transmission repetition period and/or the HARQ timing are added in the above signaling, and are sent together with the TTI bundling value, and can also be separately sent by other signaling, for example, the transmission repetition period is sent by signaling 1, and the HARQ is sent.
  • the timing is transmitted by signaling 2, or the transmission repetition period and the HARQ timing are transmitted together by the signaling 3.
  • the generation period of the VoIP data packet corresponds to a plurality of periods of the current uplink and downlink configuration information, and the number of all uplink subframes included in the multiple periods should satisfy the VoIP data.
  • the number of all TTIs in the package corresponds to a plurality of periods of the current uplink and downlink configuration information, and the number of all uplink subframes included in the multiple periods should satisfy the VoIP data. The number of all TTIs in the package.
  • the time period corresponds to In the multiple periods of the uplink and downlink configuration information, sufficient number of uplink subframes should be included to avoid collision between multiple data packets in the same VoIP process running in the terminal.
  • the new uplink and downlink configuration information is selected, and the number of all uplink subframes included in the multiple uplink and downlink configuration information in the multiple periods meets greater than or equal to that in the VoIP data packet.
  • the number of all TTIs; the new uplink and downlink configuration information and the corresponding TTI bundle value are sent to the terminal.
  • the new uplink and downlink configuration information and the corresponding TTI bundling value may be placed in the foregoing configuration signaling to be sent to the terminal; or may be sent through other signaling.
  • the channel quality parameter corresponding to the terminal may be obtained, and when the value of the channel quality parameter is less than or equal to a preset parameter threshold, determining that the terminal needs to perform VoIP data The TTI bundling operation.
  • the channel quality corresponding to the terminal (expressed as the value of the channel quality parameter) may be obtained, so that when the channel quality is poor (expressed as the value of the channel quality parameter is less than or equal to the preset parameter threshold) , Determine the need to perform TTI bundling operations to ensure the smooth execution of VoIP calls.
  • the process of obtaining a channel quality parameter corresponding to the terminal includes: measuring a reference signal sent by the terminal to obtain the channel quality parameter; or receiving a downlink measurement report uploaded by the terminal, and measuring the downlink from the downlink The channel quality parameter is obtained in the report.
  • the method further includes: after the terminal performs the TTI bundling operation according to the TTI bundling value, whether the value of the changed channel quality parameter satisfies the preset value If the parameter is not satisfied, the new uplink and downlink configuration information is selected, and the new uplink and downlink configuration information and the corresponding TTI binding value are sent to the terminal; After the information is applied, after the terminal performs the TTI bundling operation according to the corresponding TTI bundling value, the changed value of the channel quality parameter satisfies the preset parameter threshold.
  • the uplink and downlink configuration information supports the preset bundle configuration parameter, for example, when the preset bundle configuration parameter is 2, and the currently used uplink and downlink configuration information is the configuration 2, the TTI can be executed.
  • the bundling operation but the resulting gain does not necessarily enable the terminal to successfully complete the VoIP call. Therefore, by estimating the situation after the completion of the TTI bundling operation, and replacing the uplink and downlink configuration information when the requirements are not met, after the TTI bundling operation is completed, it is possible to truly ensure sufficient gain for the terminal to improve channel quality. And successfully complete the VoIP call.
  • Figure 6 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention.
  • a base station 600 includes: a request receiving unit 602, configured to receive a VoIP call request corresponding to any terminal; a value obtaining unit 604, configured to determine that the terminal needs to be If the generated VoIP data packet performs the TTI bundling operation, the TTI bundling value corresponding to the currently used uplink and downlink configuration information is obtained; the signaling configuration unit 606 is configured to generate configuration signaling including the TTI bundling value, and Sending the configuration signaling to the terminal.
  • the corresponding TTI bundling value can be reset, so that the current uplink and downlink can be used.
  • the configuration information is used to dynamically configure the TTI bundle value to minimize the frequent adjustment of the uplink and downlink configuration information to avoid cross interference to surrounding cells.
  • the value obtaining unit 604 is specifically configured to: obtain the number of uplink subframes included in a single period corresponding to the currently used uplink and downlink configuration information, and bundle all the preset TTIs. In the value, a TTI bundling value less than or equal to the number of the uplink subframes is selected for generating the configuration signaling.
  • each uplink and downlink configuration information is in a 10 ms period, the number of uplink subframes included is constant, so that the number of uplink subframes is greater than or equal to the number of TTI bundles.
  • the TTI bundling operation under the number of TTI bundles.
  • the value obtaining unit 604 is further configured to: when there are multiple TTI bundling values that are less than or equal to the number of the uplink subframes, select one less than or equal to the preset rule according to a preset rule.
  • the TTI bundling value of the number of uplink subframes indicates that the terminal performs the bundling operation on the VoIP data packet by using the selected TTI bundling value.
  • the available bundling value is any value in 2-6
  • a value can be selected from which is the TTI bundling value of the application.
  • a specific TTI bundling operation may be performed according to the provisions of the current Rel-8 standard protocol for the TTI bundling operation in the case where the bundling value is 4.
  • the available bundling value is only 2, which can be directly confirmed as the TTI bundling value to be applied.
  • the value obtaining unit 604 is further configured to: when there are multiple TTI bundling values that are less than or equal to the number of the uplink subframes, select multiple less than or equal to according to a preset rule.
  • the TTI bundling value of the number of uplink subframes, and the selected multiple TTI bundling values form a bundled array, indicating that the terminal divides all TTIs in the VoIP data packet into multiple TTI groups according to the bundled array.
  • Each ⁇ bundling value in the bundled array corresponds to at least one TTI group of the plurality of TTI groups, and the number of TTIs included in each of the plurality of TTI groups is bundled with a corresponding TTI The values are equal.
  • the number and arrangement positions of the TTI groups corresponding to each bundled value may exist in multiple implementation forms.
  • the array ⁇ 2 3 ⁇ , assuming that there are 20 TTIs in total, in one mode, it can be bundled into 7 groups, and each of the groups of 1 group contains 2 groups, and the remaining 6 Each ⁇ group in the ⁇ group contains 3 ⁇ ; in the other way, it can be bundled into 8 ⁇ groups, and each of the 4 ⁇ groups contains 2 ⁇ , and the remaining 4 ⁇ Each group in the group contains 3 ⁇ ; in the other way, it can be bundled into 9 ⁇ groups, and each of the 7 ⁇ groups contains 2 ⁇ , and the remaining 2 ⁇ groups Each ⁇ group contains 3 ⁇ and so on.
  • the above 7 total TTI groups are taken as an example, and the TTI group including 2 TTIs can form 7 different combinations with the remaining 6 TTI groups, such as (2, 3, 3, 3, 3). ,3,3 ) , ( 3,2,3,3,3,3,3 ) , ( 3,3,2,3,3,3,3 ) , ( 3,3,3,2,3,3 , 3) , ( 3,3,3,3,2,3,3 ) , (3,3,3,3,3, 2,3 ) , ( 3,3,3,3,3,3,2 ) Wait.
  • a communication standard can be incorporated in advance or a protocol can be formed between the terminal and the base station, so that it can be smoothly executed in the specific implementation.
  • the signaling configuration unit 606 is further configured to: add a binding policy to the configuration signaling, where the binding policy includes: each TTI in the bundled array The correspondence between the binding value and the plurality of TTI groups.
  • the correspondence between each TTI bundling value and multiple TTI groups includes the number of TTI groups corresponding to each TTI bundling value described above, and the "arrangement order" between multiple TTI groups ( The pre-determined order before bundling does not refer to the order after bundling).
  • the bundled arrays may correspond to a plurality of bundled policies, in order to facilitate the execution of the bundled mode on the terminal side, the bundled policy may be directly specified, that is, the number of TTI groups corresponding to each TTI bundle value is determined, and multiple TTI groups are determined. The order between the "sequences".
  • the terminal may directly generate a set of random numbers from the plurality of bundled values, and perform bundle operations on the TTIs in the VoIP packets according to the set of random numbers.
  • the VoIP call request is from a wireless mobile communication network, or is initiated by the terminal.
  • the terminal For a VoIP call request from a wireless mobile communication network, that is, a call request from another terminal; for a VoIP call request initiated by the terminal, the terminal needs to initiate a call request to another terminal.
  • the configuration information of the uplink and downlink can be changed, so that the terminal can successfully perform the TTI bundling operation to improve the data transmission quality during the VoIP call.
  • the generating period length of the VoIP data packet corresponds to a plurality of periods of the currently used uplink and downlink configuration information
  • the base station further includes: a quantity determining unit 608, Determining the number of all uplink subframes included in the multiple cycles Whether the number of all the TTIs in the VoIP data packet is greater than or equal to the number of the TTIs; the information selection unit 610 is configured to: if not satisfied, select new uplink and downlink configuration information, and the new uplink and downlink configuration information is in the The number of all the uplink subframes included in the multiple times is greater than or equal to the number of all the TTIs in the VoIP data packet; wherein the signaling configuration unit 606 sets the new uplink and downlink configuration information and the corresponding The TTI bundle value is sent to the terminal.
  • the time period corresponding to the uplink and downlink configuration information in multiple periods should include enough uplink subframe numbers to avoid running in the terminal. Collisions between multiple packets in the same VoIP process.
  • the signaling configuration unit is further configured to: send a transmission repetition period and/or a HARQ timing to the terminal; where, the transmission repetition period refers to corresponding to each
  • the repetition period of the VoIP data packet refers to an ACK feedback subframe corresponding to each of the data packets, or a NACK feedback subframe corresponding to each of the data packets and a retransmission subframe number.
  • the transmission repetition period and/or the HARQ timing may be added in the above configuration signaling and sent together with the TTI bundling value; or, may be separately sent by other signaling, for example, the transmission repetition period is signaled 1 Transmit, send HARQ timing with signaling 2, or transmit transmission repetition period and HARQ timing by signaling 3 - and transmit.
  • the method further includes: a parameter obtaining unit 612, configured to acquire a channel quality parameter corresponding to the terminal; and a parameter determining unit 614, configured to: when the value of the channel quality parameter is less than or equal to In the case of a preset parameter threshold, it is determined that the terminal needs to perform the TTI bundling operation on the VoIP data.
  • the channel quality corresponding to the terminal (expressed as the value of the channel quality parameter) may be obtained, so that when the channel quality is poor (expressed as the value of the channel quality parameter is less than or equal to the preset parameter threshold) , Determine the need to perform TTI bundling operations to ensure the smooth execution of VoIP calls.
  • the parameter obtaining unit 612 is configured to: measure a reference signal sent by the terminal, to obtain the channel quality parameter, or receive a downlink measurement report uploaded by the terminal, where The channel quality parameter is obtained in the downlink measurement report.
  • the channel quality parameter is obtained in the downlink measurement report.
  • the method further includes: a quality estimation unit 616, configured to: after the terminal performs a TTI bundling operation according to the TTI bundling value, the changed value of the channel quality parameter Whether the parameter is greater than the preset parameter threshold; the information selecting unit 610 is configured to: if not satisfied, select new uplink and downlink configuration information, and bind the new uplink and downlink configuration information and the corresponding TTI value Sending to the terminal, where the value of the channel quality parameter is satisfied after the TTI bundling operation is performed according to the corresponding TTI bundling value, when the terminal applies the new uplink and downlink configuration information,
  • the preset parameter has a threshold value.
  • the uplink and downlink configuration information supports the preset bundle configuration parameter, for example, when the preset bundle configuration parameter is 2, and the currently used uplink and downlink configuration information is the configuration 2, the TTI can be executed.
  • the bundling operation but the resulting gain does not necessarily enable the terminal to successfully complete the VoIP call. Therefore, by estimating the situation after the completion of the TTI bundling operation, and replacing the uplink and downlink configuration information when the requirements are not met, after the TTI bundling operation is completed, it is possible to truly ensure sufficient gain for the terminal to improve channel quality. And successfully complete the VoIP call.
  • FIG. 7 shows a schematic diagram of an interaction configuration between a base station and a terminal according to an embodiment of the present invention.
  • the process of performing interaction configuration between a base station and a terminal includes:
  • Step 1 The base station 704 receives the VoIP request.
  • the request may be from a wireless mobile communication network for initiating a VoIP call to the terminal 702; or the request may be from the terminal 702 for initiating a VoIP call to other wireless communication devices.
  • the base station 704 needs to determine the parameters such as the received signal to noise ratio of the terminal 702 to determine the channel quality condition with the terminal 702. Specifically, base station 704 can pass:
  • the base station 704 configures an SRS signal (reference signal), and when the terminal 702 approaches the base station 704 When the SRS signal is transmitted, the base station 704 measures it to obtain a received signal to noise ratio or other parameters.
  • SRS signal reference signal
  • the base station 704 receives the downlink measurement report sent by the terminal 702, thereby determining the received signal to noise ratio or other parameters based on the channel dissimilarity.
  • the base station 704 needs to obtain the current uplink and downlink configuration information to determine the corresponding ⁇ bundle value to ensure that the TTI bundling operation can be implemented. Specifically, it is determined according to the number of uplink subframes that are included in a single period of 10 ms for each uplink and downlink configuration information. For example, for configuration 0, the TTI bundle value may be any value of 2-6; for configuration 2, the TTI bundle is configured. The value can only be 2.
  • Step 2 Send the scheduling configuration signaling to the terminal 702, where the scheduling configuration signaling includes a specific ⁇ binding value.
  • Step 3 The terminal 702 performs a bundling operation on the VoIP data packet based on the scheduling configuration signaling, and sends the VoIP data packet to the base station 704.
  • the determined TTI bundling value it may be a single value.
  • 2 or 3 may be selected as the final TTI bundling value to be applied, and sent to the terminal 702; or an array of multiple values, such as Still taking configuration 3 as an example, the array ⁇ 2, 3 ⁇ can be selected to be sent to the terminal 702 as a TTI bundle value.
  • the base station 704 can directly specify a specific binding policy and send it to the terminal 702 via the scheduling configuration signaling together with the TTI bundling value. In another case, the base station 704 can also not specify.
  • the binding strategy used by the terminal 702 is determined by itself.
  • the terminal 702 may specify a bundling policy by itself, or by performing a TTI bundling operation by using a random number composed of the above-mentioned array, and performing a TTI bundling operation (random number The value corresponds to the number of TTIs in the TTI group, and the position order of the random numbers corresponds to the position order of the TTI group).
  • the uplink and downlink configuration information discussed in this application should be theoretically supported.
  • the uplink and downlink configuration information of the bundling operation, the uplink subframe in a single period should be at least 2 or more; for the configuration 5, since there is only one uplink subframe in a single period, there is no corresponding TTI bundle.
  • the value should be directly replaced with other uplink and downlink configuration sub-frames.
  • the TTI bundling operation supported by the current uplink and downlink configuration information such as the selection of a specific bundling value, or whether it is necessary to replace other uplink and downlink configuration information, it needs to be based on the gain that can be achieved.
  • the estimation result is determined such that the received signal to noise ratio corresponding to the terminal 702 can be improved after the TTI bundling operation is performed.
  • the corresponding scheduling configuration signaling is generated, and the determined TTI binding value or the TTI binding value and the new uplink and downlink configuration information are sent to the terminal 702.
  • the currently used uplink and downlink configuration information supports the TTI bundling operation, then specify each corresponding group or group of TTI bundling values in turn, and tentatively apply and measure to determine the gain that can be brought in real time. If the current uplink and downlink configuration information does not support the TTI bundling operation, determine a new uplink and downlink configuration information in real time, and specify each corresponding group or group in turn.
  • TTI bundles values and tentatively changes and measures them to determine the gain they can bring in real time.
  • the corresponding scheduling configuration signaling is generated, and the determined TTI binding value or the TTI binding value and the new uplink and downlink configuration information are sent to the terminal 702.
  • an activation period may be added, that is, if there is no new scheduling configuration signaling in the activation period, the changed upper and lower The row configuration information is always in effect; after the activation period is exceeded, the base station 704 can cause the terminal 702 to remain in the new configuration or fall back to the original configuration.
  • the present invention provides a method for transmitting VoIP data and a base station, which can flexibly configure the TTI bundling value according to the currently used uplink and downlink configuration information, so as to avoid Frequent replacement of uplink and downlink configuration information causes cross interference to surrounding cells.

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

Abstract

La présente invention concerne un procédé de transmission de données par VoIP, comprenant les étapes suivantes : recevoir une demande d'appel VoIP correspondant à n'importe quel terminal donné ; s'il est déterminé que ledit terminal doit effectuer un groupage TTI sur un paquet VoIP généré, obtenir alors une valeur de groupage TTI correspondant aux informations de configuration en liaison montante/liaison descendante actuellement utilisées ; générer un signalement de configuration contenant ladite valeur de groupage TTI et envoyer ledit signalement de configuration audit terminal. La présente invention concerne également une station de base. Au moyen de la solution technique de la présente invention, la valeur de groupage TTI peut être configurée de façon flexible selon les informations de configuration en liaison montante/liaison descendante actuellement utilisées ; tout en garantissant la performance de transmission de données par VoIP, la flexibilité de programmation est améliorée et le débit est augmenté.
PCT/CN2014/075620 2013-11-01 2014-04-17 Procédé de transmission de données par voip et station de base WO2015062218A1 (fr)

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CN109429336B (zh) * 2017-08-23 2022-10-04 中国电信股份有限公司 资源调度方法、装置和基站
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