WO2018014656A1 - Procédé et système de conception d'informations de commande, station de base, et terminal - Google Patents

Procédé et système de conception d'informations de commande, station de base, et terminal Download PDF

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Publication number
WO2018014656A1
WO2018014656A1 PCT/CN2017/085926 CN2017085926W WO2018014656A1 WO 2018014656 A1 WO2018014656 A1 WO 2018014656A1 CN 2017085926 W CN2017085926 W CN 2017085926W WO 2018014656 A1 WO2018014656 A1 WO 2018014656A1
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Prior art keywords
mcs
terminal
scheduling grant
uplink scheduling
grant information
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PCT/CN2017/085926
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English (en)
Chinese (zh)
Inventor
王建中
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深圳市金立通信设备有限公司
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Publication of WO2018014656A1 publication Critical patent/WO2018014656A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a control information design method, a base station, a terminal, and a system.
  • the uplink data transmission is controlled by the uplink scheduling grant information transmitted on the downlink control channel PDCCH, and the current 3GPP also tends to use this method for uplink scheduling.
  • the modulation and coding strategy used by the terminal to transmit uplink data on the Physical Uplink Shared Channel (PUSCH) is not accurately determined in the uplink scheduling grant information for controlling the uplink data transmission (Modulation and Coding).
  • Scheme, referred to as MCS) level makes PUSCH data transmission with high bit error rate, low system performance or low efficiency of system resources.
  • the embodiment of the present invention provides a control information design method, a base station, a terminal, and a system, so as to enable the MCS level used by the terminal to transmit PUSCH data to be more matched with the channel quality of the subframe on the PUSCH, thereby improving system performance and usage efficiency.
  • an embodiment of the present invention provides a control information design method, where the method includes:
  • the base station generates uplink scheduling grant information corresponding to at least one uplink subframe scheduled in the at least one uplink subframe, where the uplink scheduling grant information includes MCS level information,
  • the MCS level information includes an MCS reference level and an MCS offset;
  • an embodiment of the present invention provides a control information design method, where the method includes:
  • uplink scheduling grant information sent by the base station, where the uplink scheduling grant information includes MCS level information, where the MCS level information includes an MCS reference level and an MCS offset;
  • the terminal obtains an MCS level used by the terminal to transmit at least one uplink subframe on the PUSCH according to the MCS reference level and the MCS offset.
  • an embodiment of the present invention provides a base station, where the base station includes:
  • a determining unit configured to determine at least one uplink subframe that is transmitted by the terminal
  • a generating unit configured to generate uplink scheduling grant information corresponding to at least one uplink subframe scheduled in the at least one uplink subframe, where the uplink scheduling grant information includes MCS level information, where the MCS level information includes an MCS reference level And the MCS offset;
  • a sending unit configured to send the uplink scheduling grant information to the terminal, so that the terminal obtains, according to the MCS reference level and the MCS offset, that the terminal sends the scheduled at least on the PUSCH
  • an embodiment of the present invention provides a terminal, where the terminal includes:
  • a receiving unit configured to receive uplink scheduling grant information sent by the base station, where the uplink scheduling grant information includes MCS level information, where the MCS level information includes an MCS reference level and an MCS offset;
  • a determining unit configured by the terminal, according to the MCS reference level and the MCS offset, an MCS level used by the terminal to send at least one uplink subframe on the PUSCH.
  • an embodiment of the present invention provides a control information design system, where the control information design system includes the base station according to the third aspect and the terminal according to the fourth aspect.
  • the base station after determining, by the base station, the terminal performs at least one uplink subframe for uplink transmission, the base station generates uplink scheduling grant information corresponding to the scheduled at least one uplink subframe, where the uplink scheduling grant is permitted.
  • the information includes MCS level information, and the MCS level information Including the MCS reference level and the MCS offset, the base station then sends the uplink scheduling grant information to the terminal, and after receiving the uplink scheduling grant information, the terminal obtains at least one terminal on the PUSCH according to the MCS reference level and the MCS offset.
  • the MCS level used when uplink subframes.
  • the embodiment of the present invention determines the MCS level used by the terminal to send each uplink subframe by designing the MCS reference level and the MCS offset, so that the MCS level matches the channel quality of the uplink subframe transmitted by the terminal on the PUSCH, and the system is improved. Performance and efficiency of use.
  • FIG. 1 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for designing control information according to an embodiment of the present invention
  • FIG. 3 is a schematic block diagram of a base station according to an embodiment of the present invention.
  • FIG. 4 is a schematic block diagram of another base station according to an embodiment of the present invention.
  • FIG. 5 is a schematic block diagram of a terminal according to an embodiment of the present invention.
  • FIG. 6 is a schematic block diagram of another terminal according to an embodiment of the present invention.
  • the term “if” can be interpreted as “when” or “on” or “in response to determining” or “in response to detecting” depending on the context. .
  • the phrase “if determined” or “if detected [condition or event described]” may be interpreted in context to mean “once determined” or “in response to determining” or “once detected [condition or event described] ] or “in response to detecting [conditions or events described]”.
  • the terminals described in this embodiment of the invention include, but are not limited to, other portable devices such as mobile phones, laptop computers or tablet computers having touch sensitive surfaces (eg, touch screen displays and/or touch pads). It should also be understood that in some embodiments, the device is not a portable communication device, but a desktop computer having a touch sensitive surface (eg, a touch screen display and/or a touch pad).
  • the terminal including a display and a touch sensitive surface is described.
  • the terminal can include one or more other physical user interface devices such as a physical keyboard, mouse, and/or joystick.
  • the terminal supports a variety of applications, such as one or more of the following: drawing applications, presentation applications, word processing applications, website creation applications, disk burning applications, spreadsheet applications, gaming applications, phone applications Programs, video conferencing applications, email applications, instant messaging applications, workout support applications, photo management applications, digital camera applications, digital camera applications, web browsing applications, digital music player applications, and / or digital video player app.
  • applications such as one or more of the following: drawing applications, presentation applications, word processing applications, website creation applications, disk burning applications, spreadsheet applications, gaming applications, phone applications Programs, video conferencing applications, email applications, instant messaging applications, workout support applications, photo management applications, digital camera applications, digital camera applications, web browsing applications, digital music player applications, and / or digital video player app.
  • Various applications that can be executed on the terminal can use at least one common physical user interface device such as a touch sensitive surface. Can be adjusted between applications and / or within the corresponding application and / Or change one or more functions of the touch-sensitive surface and the corresponding information displayed on the terminal.
  • the common physical architecture of the terminal eg, a touch-sensitive surface
  • FIG. 1 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.
  • the data transmission system includes a base station 110 and a terminal 120, and data can be established between the base station 110 and the terminal 120.
  • the communication connection realizes data transmission.
  • the uplink data transmission is controlled by the uplink scheduling grant information transmitted on the downlink control channel. That is, the base station 110 transmits uplink scheduling grant information on the downlink control channel of a certain downlink subframe, and then the terminal 120 performs uplink data transmission in a subsequent uplink subframe.
  • the above description is merely exemplary, and the solution of the present invention is not limited to the LTE system. It can also be applied to other systems, such as next generation wireless communication systems.
  • the LAA Licensed-Assisted Access to Unlicensed Spectrum
  • the LAA system is introduced to implement the licensed spectrum (for example, the spectrum of the LTE system).
  • Use unlicensed spectrum resources such as 5 GHz spectrum
  • the LAA system needs to follow the existing mechanisms of the unlicensed spectrum on the basis of the LTE system.
  • countries have separately stipulated the use of unlicensed spectrum.
  • LBT listen before talk
  • LBT listen before talk
  • the use of LBT (listen before talk) mechanism in the unlicensed frequency band that is, the mechanism of listening and speaking before, before sending data, Whether the state of the listening channel is idle, and if the channel is idle, the data information and the control information are transmitted, otherwise the transmission is not performed. This causes the transmission to occur with certain uncertainty.
  • CCA Clear Channel Assessment
  • the UE detects whether other devices are transmitting data on the target channel. If the target channel is already occupied by other devices, it can continue to listen when the next listening period comes, or it can stop listening according to the indication; After the channel resource is idle, the UE can immediately occupy the target channel.
  • the channel occupation time is a fixed value, which is the time length of the last symbol of the uplink subframe configured by the SRS configuration information. Considering the conversion process of the UE reporting the channel detection on the SRS, the channel can be set before the next channel detection location. Set a silent time.
  • a random number L may be generated as the backoff time, and the target channel is continuously monitored during the backoff time. If the target channel is detected to be in the idle state, the backoff time ends and the UE is at the same time. The target channel can be occupied for SRS reporting. If the UE detects that the channel state is non-idle (e.g., has been occupied by other UEs), then the device cannot occupy the channel during this period, then the UE can wait until the fixed position of the next cycle to continue detecting.
  • the initial detection is triggered. If the UE initially detects that the target channel is in an idle state, the target channel can be occupied, and the channel occupancy time T is pre-configured by the base station; if the UE initially detects that the target channel state is not idle, a delay period can be generated (defer period) Time, if a target channel is detected to be busy during the deferred cycle time, then a deferred cycle time continues to be generated. The UE may occupy the target channel after detecting that the channel state is idle after the L times detection time, and occupy the target channel time as T.
  • the introduction of the LAA system has led to many new challenges.
  • at least two LBT processes must be successfully performed.
  • the downlink LBT process is successfully performed for the first time, so that the base station can send the uplink scheduling control information, and the other is the successful uplink LBT process, so that the UE can upload the uplink data. Since the two LBT processes are not necessarily satisfied at the same time, it is possible to be separated for a relatively long period of time. Therefore, it is necessary to avoid scheduling failures due to LBT failure, and further improve scheduling efficiency.
  • the terminal described in the present disclosure may be applicable to multiple base stations to communicate with one base station, or may simultaneously communicate with multiple base stations on multiple carriers.
  • one of the carriers may be determined to be a primary carrier (PCC), and the primary carrier may be applied to a primary cell (PCell) where the terminal is located, and the primary cell may be semi-static with the terminal through high layer signaling (eg, RRC).
  • the other carrier except the primary carrier may be a secondary carrier (SCC), and the secondary carrier may be applied to the secondary cell where the terminal is located.
  • the primary carrier can be configured with the first spectrum, the first spectrum It may be a licensed spectrum or an unlicensed spectrum.
  • the secondary carrier may be configured by using a second spectrum, which may be an unlicensed spectrum or an authorized spectrum.
  • the first spectrum and the second spectrum may be configured as different spectrums.
  • the uplink scheduling grant information corresponding to the uplink data transmission involved in the embodiment of the present invention is divided into two phases.
  • the first phase uplink scheduling grant information is a public, semi-static grant information, and may include a resource block (Resource Block, Referred to as RB) allocation information, MCS level information, etc.;
  • the second stage is a specific uplink data transmission scheduling information, which can trigger the PUSCH channel to be transmitted in a certain subframe, but the current uplink scheduling grant information is in the second phase.
  • the MCS level is not included, so that multiple scheduled uplink subframes are assigned the same MCS level, and the channel quality of the terminal 120 on multiple subframes may be different, so that the allocated MCS level and the subframe of the specific PUSCH transmission may occur.
  • the channel quality does not match. Specifically, if the assigned MCS level is too high, the error rate of PUSCH data transmission will increase, and the system performance will be degraded. If the allocated MCS level is too low, the system resource usage efficiency may be lowered.
  • the control information design method of the embodiment of the present invention is based on the improvement of the uplink scheduling grant information.
  • FIG. 2 is a schematic flowchart of a method for designing control information according to an embodiment of the present invention. As shown in FIG. 2, the method may include the following steps:
  • the base station determines at least one uplink subframe that is transmitted by the terminal.
  • the base station when the terminal sends a subframe in the PUSCH, different uplink scheduling grant information needs to be allocated by the base station for different subframe transmissions. Therefore, the base station first needs to determine the subframe in which the terminal performs uplink transmission, and then Uplink scheduling allows information to be designed.
  • the base station generates uplink scheduling grant information corresponding to the scheduled at least one uplink subframe, where the uplink scheduling grant information includes MCS level information, where the MCS level information includes an MCS reference level and an MCS offset.
  • the MCS level information refers to a modulation and coding policy level used when the subframe corresponding to the MCS level information is transmitted.
  • the MCS level included in the uplink scheduling grant information is Information also refers to the level of modulation and coding strategy used by the terminal to transmit uplink subframe data.
  • the MCS level information is jointly determined by the MCS reference level and the MCS offset.
  • the MCS reference level is common MCS control information
  • the MCS offset is an offset of an MCS level used by the uplink subframe with respect to the MCS reference level.
  • the MCS reference level is a common, semi-static MCS level information, which is equivalent to using the same MCS reference level for multiple uplink subframes, and the MCS offset is the MCS offset corresponding to the uplink subframe, thereby
  • the MCS level used by the uplink subframe may be determined by the MCS reference level and the MCS offset.
  • the uplink scheduling grant information is divided into a first phase uplink scheduling grant information and a second phase uplink scheduling grant information, where the MCS reference level is located in the first phase.
  • the MCS level information may also be included in the uplink scheduling grant information in other manners.
  • the MCS reference level information is located in an MCS indication field of the first stage uplink scheduling grant information in a Licensed Assisted Access (LAA) system.
  • LAA Licensed Assisted Access
  • the MCS offset is located in a shortened MCS indication field of the second stage uplink scheduling grant information, where the shortened MCS indication field has a bit length that is less than a bit length of the MCS indication field.
  • the MCS offset used to determine the MCS level used in the uplink subframe may be an offset based on the MCS reference level, so the MCS offset may be understood as the MCS reference level.
  • An adjustment amount preferably, the level value of the MCS offset may be smaller than the level value of the MCS reference level, so that the shortened MCS indication field for indicating the MCS offset in the second stage uplink scheduling grant information may be designed.
  • the bit length is less than the bit length of the MCS reference level.
  • the MCS reference level can be from ten to twenty, and the MCS offset can be only a few. This type of adjustment has proven to be beneficial.
  • the MCS offset can be dynamically varied and can be obtained from instantaneous channel quality, thus effectively reflecting changes in instantaneous channel quality.
  • the value of the MCS reference level can also be based on periodic or event-based overall updates.
  • the system may perform uplink multi-subframe scheduling, that is, the base station uses one downlink subframe to schedule multiple uplink subframes on the terminal side, here is one downlink subframe scheduling.
  • the subframes in which the terminal performs uplink transmission may be multiple, that is, the uplink scheduling grant information may be sent for multiple uplink subframes, and the first phase uplink scheduling grant information will be sent for the multiple uplink subframes.
  • the MCS reference level of the information is used to calculate the MCS level of each different uplink subframe by using the MCS offset corresponding to each uplink subframe in the second-stage uplink scheduling grant information.
  • the first stage uplink scheduling grant information may be cell level uplink scheduling grant information
  • the second phase uplink scheduling grant information may be user level uplink scheduling grant information
  • the two uplink subframes use the same first-stage uplink scheduling grant information, and the first phase uplink scheduling grant information includes one
  • the MCS level information of the reference for example, the original MCS indication field of the LTE system may be used, and the MCS reference level information is represented by 5 bits, for example, the MCS reference level may be set to 10.
  • two second-stage uplink scheduling grant information are respectively corresponding, and in the uplink scheduling grant information of the second phase, an MCS offset field is set, indicating that the MCS used in each uplink subframe is actually used.
  • the offset of the level relative to the reference MCS level For example, a field of two bits can be used to represent the offset.
  • the MCS reference level and the offset can be used to jointly determine the MCS level used by each uplink subframe.
  • the MCS reference level may also not use the original MCS indication field of the LTE system, and another field is designed to set the MCS reference level.
  • the MCS reference level and the MCS offset may be set in the first stage uplink scheduling grant information at the same time, or may be set in the second stage uplink scheduling grant information at the same time.
  • the MCS reference level and the MCS offset are finally used together to determine the MCS level used by each uplink subframe by using the MCS reference level and the MCS offset.
  • the base station sends uplink scheduling grant information to the terminal.
  • the base station sends the uplink scheduling grant information to the terminal, so that the terminal obtains, according to the MCS reference level and the MCS offset, that the terminal sends the uplink subframe on the PUSCH.
  • the MCS level used.
  • the MCS level information is the MCS level allocated by the base station when the terminal sends the uplink subframe data on the PUSCH
  • the base station needs to send the level information to the terminal by using the uplink scheduling grant information, and then the terminal will send the received base station.
  • Upstream scheduling grant information is the MCS level allocated by the base station when the terminal sends the uplink subframe data on the PUSCH.
  • the terminal sends, in the uplink scheduling grant information, the first-stage uplink scheduling grant information and the first-stage uplink scheduling grant information of the uplink scheduling grant information by using the physical downlink control channel PDCCH, for example, sending the first time at the first time.
  • the phase uplink scheduling grant information is then sent to the second phase uplink scheduling grant information immediately at the next second moment.
  • the terminal when the terminal sends the uplink scheduling grant information, the terminal may also use other timings to sequentially send the first-stage uplink scheduling grant information and the second-stage uplink scheduling grant information through the physical downlink control channel PDCCH.
  • the first stage uplink scheduling grant information is sent to the terminal by using a first spectrum
  • the second stage uplink scheduling grant information is sent to the terminal by using a second spectrum, where the first spectrum and the The second spectrum is different.
  • the first spectrum may be an unlicensed spectrum or an unlicensed spectrum.
  • the second spectrum is an unlicensed spectrum.
  • the first spectrum is the licensed spectrum.
  • the terminal obtains an MCS level used by the terminal to send at least one uplink subframe on the PUSCH according to the MCS reference level and the MCS offset.
  • the terminal is used by the terminal to send the at least one uplink subframe on a PUSCH.
  • MCS rating including:
  • the terminal obtains, according to the MCS reference level and the MCS offset, an MCS level used by the terminal to send at least one uplink subframe on a PUSCH.
  • Also includes:
  • the terminal Determining, by the terminal, the MCS level obtained after the terminal transmits the at least one uplink subframe on the PUSCH according to the number of LBT detection failures, and the MCS level obtained by superimposing the MCS offset on the MCS reference level, or MCS benchmark rating.
  • the terminal determines that the MCS level used by the terminal to send an uplink subframe on the PUSCH is The MCS level obtained by superimposing the MCS offset level, wherein N is a configurable parameter, and the value range may be a positive integer;
  • the terminal determines that the MCS level used by the terminal to transmit an uplink subframe on the PUSCH is the MCS reference level.
  • the reference MCS level may be semi-static, ie the MCS level obtained from a longer term statistical average channel quality, while the MCS offset may be dynamic, obtained from instantaneous channel quality. If the number of failures of the user LBT reaches a preset value (for example, the preset value is large), the time interval between the transmission of the uplink PUSCH data and the MCS offset control information by the user is relatively long, and the obtained channel quality is obtained by the instantaneous channel quality. The MCS level has not been able to effectively reflect the instantaneous channel quality. At this time, it is more beneficial to obtain the reference MCS level from the long-term statistical average as the MCS level used by the user.
  • the MCS offset may be a positive offset or a negative offset.
  • the MCS level used by the terminal to transmit the uplink subframe on the PUSCH is an MCS level obtained by superimposing the MCS offset on the MCS reference level.
  • the MCS level used by the terminal to transmit the uplink subframe on the PUSCH is an MCS level obtained by negatively superimposing the MCS offset on the MCS reference level.
  • the base station sets the MCS offset value according to the MCS level that is actually used in each uplink subframe, and the MCS offset is a positive offset or a negative offset; The level is positively superimposed or negatively superimposed.
  • the first stage uplink scheduling grant information of the uplink scheduling grant information uses the original MCS indication field of the LTE system, and uses 5 bits to represent the MCS.
  • the reference level information for example, the MCS reference level may be set to 10, for two uplink subframes, for example, the uplink subframe A and the uplink subframe B, respectively corresponding to two second-stage uplink scheduling grant information, and the scheduling information may be scheduled in the uplink.
  • the second stage uplink scheduling grant information setting sets the value of the MCS offset to 2 (corresponding to the uplink subframe A) and 4 (corresponding to the uplink subframe B), and finally the MCS level actually used by the uplink subframe A is at the reference MCS level.
  • the MCS offset is accumulated on the basis of the forward MCS level, and the MCS level used by the terminal to transmit the uplink subframe A is 12 levels.
  • the MCS level actually used by the uplink subframe B is based on the reference MCS level.
  • the MCS offset is accumulated in the forward direction, that is, the level 10 is accumulated by 4 levels, and the MCS level used by the terminal to finally transmit the uplink subframe B is 14 levels.
  • the base station after determining, by the base station, the uplink subframe of the uplink transmission, the base station generates uplink scheduling grant information corresponding to the scheduled uplink subframe, where the uplink scheduling grant information includes MCS level information, and the MCS
  • the level information includes the MCS reference level and the MCS offset, and then the base station sends the uplink scheduling grant information to the terminal, and after receiving the uplink scheduling grant information, the terminal obtains the terminal to send on the PUSCH according to the MCS reference level and the MCS offset.
  • the MCS level used when uplink subframes.
  • the embodiment of the present invention determines the MCS level used by the terminal to send each uplink subframe by designing the MCS reference level and the MCS offset, so that the MCS level matches the channel quality of the uplink subframe transmitted by the terminal on the PUSCH, and the system is improved. Performance and efficiency of use.
  • the embodiment of the invention further provides a base station, including:
  • a determining unit configured to determine at least one uplink subframe that is transmitted by the terminal
  • a generating unit configured to generate uplink scheduling grant information corresponding to at least one uplink subframe scheduled in the at least one uplink subframe, where the uplink scheduling grant information includes MCS level information, where the MCS level information includes an MCS reference level And the MCS offset;
  • a sending unit configured to send the uplink scheduling grant information to the terminal, so that the terminal obtains the terminal on the PUSCH according to the MCS reference level and the MCS offset The MCS level used when transmitting the scheduled at least one uplink subframe.
  • FIG. 3 is a schematic block diagram of a base station according to an embodiment of the present invention.
  • a base station 300 according to an embodiment of the present invention may include:
  • the determining unit 310 determines whether the generating unit 320 or the transmitting unit 330.
  • the determining unit 310 is configured to determine at least one uplink subframe that is transmitted by the terminal.
  • the base station when the terminal sends a subframe in the PUSCH, different uplink scheduling grant information needs to be allocated by the base station for different subframe transmissions. Therefore, the base station first needs to determine the subframe in which the terminal performs uplink transmission, and then Uplink scheduling allows information to be designed.
  • the generating unit 320 is configured to generate uplink scheduling grant information corresponding to the scheduled at least one uplink subframe in the at least one uplink subframe, where the uplink scheduling grant information includes MCS level information, where the MCS level information includes an MCS reference Level and MCS offset.
  • the MCS level information refers to a modulation and coding policy level used when the subframe corresponding to the MCS level information is transmitted.
  • the MCS level information included in the uplink scheduling grant information also refers to the terminal transmitting uplink subframe data.
  • the MCS level information is jointly determined by the MCS reference level and the MCS offset.
  • the MCS reference level is common MCS control information
  • the MCS offset is an offset of an MCS level used by the uplink subframe with respect to the MCS reference level.
  • the MCS reference level is a common, semi-static MCS level information, which is equivalent to using the same MCS reference level for multiple uplink subframes, and the MCS offset is the MCS offset corresponding to the uplink subframe, thereby
  • the MCS level used by the uplink subframe may be determined by the MCS reference level and the MCS offset.
  • the uplink scheduling grant information is divided into a first phase uplink scheduling grant information and a second phase uplink scheduling grant information, where the MCS reference level is located in the first phase.
  • the MCS level information may also be included in the uplink scheduling grant information in other manners.
  • the MCS reference level information is located in an MCS indication field of the first stage uplink scheduling grant information in a Licensed Assisted Access (LAA) system.
  • LAA Licensed Assisted Access
  • the MCS offset is located in a shortened MCS indication field of the second stage uplink scheduling grant information, where the shortened MCS indication field has a bit length that is less than a bit length of the MCS indication field.
  • the system may perform uplink multi-subframe scheduling, that is, the base station uses one downlink subframe to schedule multiple uplink subframes on the terminal side, here is one downlink subframe scheduling.
  • the subframes in which the terminal performs uplink transmission may be multiple, that is, the uplink scheduling grant information may be sent for multiple uplink subframes, and the first phase uplink scheduling grant information will be sent for the multiple uplink subframes.
  • the MCS reference level of the information is used to calculate the MCS level of each different uplink subframe by using the MCS offset corresponding to each uplink subframe in the second-stage uplink scheduling grant information.
  • the first stage uplink scheduling grant information may be cell level uplink scheduling grant information
  • the second phase uplink scheduling grant information may be user level uplink scheduling grant information
  • the MCS reference level may also not use the original MCS indication field of the LTE system, and another field is designed to set the MCS reference level.
  • the MCS reference level and the MCS offset may be set in the first stage uplink scheduling grant information at the same time, or may be set in the second stage uplink scheduling grant information at the same time.
  • the MCS reference level and the MCS offset are finally used together to determine the MCS level used by each uplink subframe by using the MCS reference level and the MCS offset.
  • the sending unit 330 is configured to send the uplink scheduling grant information to the terminal, so that the terminal obtains, according to the MCS reference level and the MCS offset, the terminal sends the scheduled on the PUSCH.
  • the MCS level used when at least one uplink subframe.
  • the sending unit 330 is specifically configured to:
  • the first stage uplink scheduling grant information and the second phase uplink scheduling grant information are sequentially sent to the terminal through a physical downlink control channel PDCCH.
  • the first stage uplink scheduling grant information is sent to the terminal by using a first spectrum
  • the second stage uplink scheduling grant information is sent to the terminal by using a second spectrum, where the first spectrum and the The second spectrum is different.
  • the first spectrum may be an unlicensed spectrum or an unlicensed spectrum.
  • the second spectrum is an unlicensed spectrum.
  • the first spectrum is the licensed spectrum.
  • the MCS offset may be a positive offset or a negative offset.
  • the MCS level used by the terminal to transmit the uplink subframe on the PUSCH is an MCS level obtained by superimposing the MCS offset on the MCS reference level.
  • the MCS level used by the terminal to transmit the uplink subframe on the PUSCH is an MCS level obtained by negatively superimposing the MCS offset on the MCS reference level.
  • the base station sets the MCS offset value according to the MCS level that is actually used by each uplink subframe, and the MCS offset is a positive offset or a negative offset; To the overlay or to the negative overlay.
  • the base station 300 determines, after the terminal performs at least one uplink subframe of the uplink transmission, the uplink scheduling grant information corresponding to the scheduled at least one uplink subframe, where the uplink scheduling grant information includes the MCS.
  • Level information, the MCS level information includes an MCS reference level and an MCS offset, and then the base station sends the uplink scheduling grant information to the terminal, and after receiving the uplink scheduling grant information, the terminal according to the MCS reference level and the MCS offset Obtaining the MCS level used by the terminal when the PUSCH transmits at least one uplink subframe.
  • the embodiment of the present invention determines the MCS level used by the terminal to transmit each uplink subframe by designing the MCS reference level and the MCS offset, so that the MCS level and the uplink of the terminal are sent on the PUSCH.
  • Channel quality matching of sub-frames improves system performance and efficiency.
  • the base station 300 is presented in the form of a unit.
  • a "unit” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the functionality described above. .
  • ASIC application-specific integrated circuit
  • FIG. 4 is a schematic block diagram of another base station according to an embodiment of the present invention.
  • the base station in this embodiment as shown may include one or more processors 401; one or more input devices 402, one or more output devices 403, and memory 404.
  • the above processor 401, input device 402, output device 403, and memory 404 are connected by a bus 405.
  • the memory 402 is for storing instructions
  • the processor 401 is for executing instructions stored by the memory 402.
  • the processor 401 is configured to: determine, by the base station, at least one uplink subframe that is transmitted by the terminal, where the base station generates uplink scheduling grant information corresponding to the at least one uplink subframe that is scheduled in the at least one uplink subframe, where
  • the uplink scheduling grant information includes MCS level information
  • the MCS level information includes an MCS reference level and an MCS offset
  • the uplink scheduling grant information is sent to the terminal, so that the terminal according to the MCS reference level and the The MCS offset is used to obtain the MCS level used by the terminal to transmit the scheduled at least one uplink subframe on the PUSCH.
  • the uplink scheduling grant information is divided into a first phase uplink scheduling grant information and a second phase uplink scheduling grant information, where the MCS reference level is located in the first phase.
  • the MCS reference level is a common MCS control information, where the MCS offset is an MCS level used by the at least one uplink subframe relative to the MCS reference. The offset of the level.
  • the MCS reference level information bit The MCS indication domain of the first phase uplink scheduling grant information in the granting auxiliary access LAA system.
  • the MCS offset is located in a shortened MCS indication field of the second stage uplink scheduling grant information, where the shortened MCS indication field has a bit length that is less than a bit length of the MCS indication field.
  • the sending, by the processor 401, the uplink scheduling grant information to the terminal includes:
  • the first stage uplink scheduling grant information and the second phase uplink scheduling grant information are sequentially sent to the terminal through a physical downlink control channel PDCCH.
  • the first stage uplink scheduling grant information is sent to the terminal by using a first spectrum
  • the second stage uplink scheduling grant information is sent to the terminal by using a second spectrum, where the first spectrum and the The second spectrum is different.
  • the first spectrum may be an unlicensed spectrum or an unlicensed spectrum.
  • the second spectrum is an unlicensed spectrum.
  • the first spectrum is the licensed spectrum.
  • the processor 401 may be a central processing unit (CPU), and the processor may also be another general-purpose processor, a digital signal processor (DSP). , Application Specific Integrated Circuit (ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the input device 402 can include a touchpad, a fingerprint sensor (for collecting fingerprint information of the user and direction information of the fingerprint), a microphone, etc.
  • the output device 403 can include a display (LCD or the like), a speaker, and the like.
  • the memory 404 can include read only memory and random access memory and provides instructions and data to the processor 401.
  • a portion of memory 404 may also include non-volatile random access memory.
  • the memory 404 can also store information of the device type.
  • the processor 401, the input device 402, and the output are described in the embodiment of the present invention.
  • the device 403 can be implemented in the first embodiment of the method for designing the control information provided by the embodiment of the present invention, and the implementation manner of the base station described in the embodiment of the present invention is also implemented, and details are not described herein again.
  • the base station 400 determines, after the terminal performs at least one uplink subframe of the uplink transmission, the uplink scheduling grant information corresponding to the scheduled at least one uplink subframe, where the uplink scheduling grant information includes the MCS.
  • Level information, the MCS level information includes an MCS reference level and an MCS offset, and then the base station sends the uplink scheduling grant information to the terminal, and after receiving the uplink scheduling grant information, the terminal according to the MCS reference level and the MCS offset Obtaining the MCS level used by the terminal when the PUSCH transmits at least one uplink subframe.
  • the embodiment of the present invention determines the MCS level used by the terminal to send each uplink subframe by designing the MCS reference level and the MCS offset, so that the MCS level matches the channel quality of the uplink subframe transmitted by the terminal on the PUSCH, and the system is improved. Performance and efficiency of use.
  • the base station 400 is presented in the form of a unit.
  • a "unit” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the functionality described above. .
  • ASIC application-specific integrated circuit
  • the embodiment of the invention further provides a terminal, including:
  • a receiving unit configured to receive uplink scheduling grant information sent by the base station, where the uplink scheduling grant information includes MCS level information, where the MCS level information includes an MCS reference level and an MCS offset;
  • a determining unit configured by the terminal, according to the MCS reference level and the MCS offset, an MCS level used by the terminal to send at least one uplink subframe on the PUSCH.
  • FIG. 5 is a schematic block diagram of a terminal according to an embodiment of the present invention.
  • a terminal 500 provided by an embodiment of the present invention may include:
  • the receiving unit 510 and the determining unit 520 are identical to each other.
  • the receiving unit 510 is configured to receive uplink scheduling grant information sent by the base station, where the uplink scheduling grant information includes MCS level information, where the MCS level information includes an MCS reference level and an MCS offset.
  • the determining unit 520 is configured to obtain, according to the MCS reference level and the MCS offset, the MCS level used by the terminal to send at least one uplink subframe on the PUSCH.
  • the determining unit 520 is specifically configured to:
  • an MCS level used when transmitting at least one uplink subframe on the PUSCH is an MCS level obtained by superimposing the MCS offset on the MCS reference level.
  • the determining unit 520 is specifically configured to:
  • the terminal Determining, by the terminal, the MCS level obtained after the terminal transmits the at least one uplink subframe on the PUSCH according to the number of LBT detection failures, and the MCS level obtained by superimposing the MCS offset on the MCS reference level, or MCS benchmark rating.
  • the terminal determines that the MCS level used by the terminal to send an uplink subframe on the PUSCH is The MCS level obtained by superimposing the MCS offset on the MCS reference level, where N is a configurable parameter;
  • the terminal determines that the MCS level used by the terminal to transmit an uplink subframe on the PUSCH is the MCS reference level.
  • the uplink scheduling grant information is divided into a first phase uplink scheduling grant information and a second phase uplink scheduling grant information, where the MCS reference level is located in the first phase.
  • the MCS reference level is a common MCS control information, where the MCS offset is an MCS level used by the at least one uplink subframe relative to the MCS reference. The offset of the level.
  • the MCS reference level information is located in an MCS indication field of the first stage uplink scheduling grant information in the authorized auxiliary access LAA system.
  • the MCS offset is located in a shortened MCS indication field of the second stage uplink scheduling grant information, where the shortened MCS indication field has a bit length that is less than a bit length of the MCS indication field.
  • the base station determines, after the at least one uplink subframe of the uplink transmission by the terminal 500, the uplink scheduling grant information corresponding to the scheduled at least one uplink subframe, where the uplink scheduling grant information includes the MCS.
  • Level information, the MCS level information includes an MCS reference level and an MCS offset, and then the base station sends the uplink scheduling grant information to the terminal 500.
  • the terminal 500 After receiving the uplink scheduling grant information, the terminal 500 according to the MCS reference level and the MCS bias.
  • the shifting obtains the MCS level used by the terminal when the PUSCH transmits at least one uplink subframe.
  • the embodiment of the present invention determines the MCS level used by the terminal to send each uplink subframe by designing the MCS reference level and the MCS offset, so that the MCS level matches the channel quality of the uplink subframe transmitted by the terminal on the PUSCH, and the system is improved. Performance and efficiency of use.
  • the terminal 500 is presented in the form of a unit.
  • a "unit” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the functionality described above. .
  • ASIC application-specific integrated circuit
  • FIG. 6 is a schematic block diagram of another terminal according to an embodiment of the present invention.
  • the terminal in this embodiment as shown may include one or more processors 601; one or more input devices 602, one or more output devices 603, and memory 604.
  • the above processor 601, input device 802, output device 803, and memory 604 are connected by a bus 805.
  • the memory 802 is for storing instructions
  • the processor 801 is for executing instructions stored by the memory 602.
  • the processor 601 is configured to: receive, by the terminal, uplink scheduling grant information sent by the base station, where the uplink scheduling grant information includes MCS level information, where the MCS level information includes an MCS reference level and an MCS offset; The MCS reference level and the MCS offset are used to obtain an MCS level used by the terminal to transmit at least one uplink subframe on the PUSCH.
  • the processor 601 is used by the terminal to send at least one uplink subframe on the PUSCH.
  • MCS rating including:
  • the determining, by the terminal, the MCS level used by the terminal to transmit at least one uplink subframe on the PUSCH is an MCS level obtained by superimposing the MCS offset on the MCS reference level.
  • the processor 601 is used by the terminal to send at least one uplink subframe on the PUSCH.
  • MCS rating including:
  • the terminal Determining, by the terminal, the MCS level obtained after the terminal transmits the at least one uplink subframe on the PUSCH according to the number of LBT detection failures, and the MCS level obtained by superimposing the MCS offset on the MCS reference level, or MCS benchmark rating.
  • the uplink scheduling grant information is divided into a first phase uplink scheduling grant information and a second phase uplink scheduling grant information, where the MCS reference level is located in the first phase.
  • the MCS reference level is common MCS control information, where the MCS offset is an MCS level used by the uplink subframe relative to the MCS reference level. Offset.
  • the MCS reference level information is located in an MCS indication field of the first stage uplink scheduling grant information in the authorized auxiliary access LAA system.
  • the MCS offset is located in a shortened MCS indication field of the second stage uplink scheduling grant information, where the shortened MCS indication field has a bit length that is less than a bit length of the MCS indication field.
  • the processor 601 may be a central processing unit (CPU), and the processor may also be another general-purpose processor, a digital signal processor (DSP).
  • DSP digital signal processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the input device 602 may include a touch panel, a fingerprint sensor (for collecting fingerprint information of the user and direction information of the fingerprint), a microphone, and the like, and the output device 603 may include a display (LCD or the like), a speaker, and the like.
  • a fingerprint sensor for collecting fingerprint information of the user and direction information of the fingerprint
  • a microphone for collecting fingerprint information of the user and direction information of the fingerprint
  • the output device 603 may include a display (LCD or the like), a speaker, and the like.
  • the memory 604 can include read only memory and random access memory and provides instructions and data to the processor 801. A portion of the memory 604 may also include a non-volatile random access memory. For example, the memory 604 can also store information of the device type.
  • the processor 601, the input device 602, and the output device 603, which are described in the embodiment of the present invention, may be implemented in the first embodiment of the control information design method provided by the embodiment of the present invention, and may also be implemented.
  • the implementation manners of the terminal described in this embodiment of the present invention are not described herein again.
  • the base station after determining, by the base station, the terminal 600 performs at least one uplink subframe for uplink transmission, the base station generates uplink scheduling grant information corresponding to the scheduled at least one uplink subframe, where the uplink scheduling grant information includes the MCS.
  • Level information the MCS level information includes an MCS reference level and an MCS offset, and then the base station sends the uplink scheduling grant information to the terminal 600.
  • the terminal 600 After receiving the uplink scheduling grant information, the terminal 600 according to the MCS reference level and the MCS bias. The shifting obtains the MCS level used by the terminal when the PUSCH transmits at least one uplink subframe.
  • the embodiment of the present invention determines the MCS level used by the terminal to send each uplink subframe by designing the MCS reference level and the MCS offset, so that the MCS level matches the channel quality of the uplink subframe transmitted by the terminal on the PUSCH, and the system is improved. Performance and efficiency of use.
  • the terminal 600 is presented in the form of a unit.
  • a "unit” herein may refer to an application-specific integrated circuit (ASIC), a processor and memory that executes one or more software or firmware programs, integrated logic circuits, and/or other devices that provide the functionality described above. .
  • ASIC application-specific integrated circuit
  • the disclosed terminal and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold as a standalone product Or when used, it can be stored in a computer readable storage medium.
  • the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé et un système de conception d'informations de commande, une station de base, et un terminal. Le procédé comprend les étapes suivantes : une station de base détermine au moins une sous-trame de liaison montante transmise par un terminal ; la station de base génère des informations d'octroi de programmation de liaison montante correspondant à au moins une sous-trame de liaison montante programmée de la ou des sous-trames de liaison montante ; et envoie les informations d'octroi de programmation de liaison montante au terminal de sorte que, d'après le niveau de référence MCS et le décalage MCS, le terminal obtient le niveau MCS utilisé lorsque le terminal envoie la ou les sous-trames de liaison montante programmées sur un PUSCH. Dans les modes de réalisation de la présente invention, la conception du niveau de référence MCS et du décalage MCS permet de déterminer le niveau MCS utilisé par un terminal lors de l'envoi de chaque sous-trame de liaison montante. Le niveau de MCS correspond ainsi à la qualité de canal de la sous-trame de liaison montante envoyée par le terminal sur un PUSCH, ce qui améliore les performances et l'efficacité d'utilisation du système.
PCT/CN2017/085926 2016-07-21 2017-05-25 Procédé et système de conception d'informations de commande, station de base, et terminal WO2018014656A1 (fr)

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CN111342942B (zh) * 2018-12-19 2021-09-21 北京紫光展锐通信技术有限公司 上行控制信息的上报方法及装置、存储介质、用户终端

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101674149A (zh) * 2008-09-08 2010-03-17 中兴通讯股份有限公司 一种自适应编码调制方法
CN102783072A (zh) * 2010-01-06 2012-11-14 阿尔卡特朗讯公司 改善采用可变速率声码器的用户设备的基于ip性能语音的方法
US20130028307A1 (en) * 2009-09-15 2013-01-31 Research In Motion Limited Adaptive modulation and coding scheme adjustment in wireless networks
CN104065446A (zh) * 2013-03-21 2014-09-24 上海贝尔股份有限公司 用于信令发送和接收mcs的方法
CN106231680A (zh) * 2016-07-21 2016-12-14 深圳市金立通信设备有限公司 一种控制信息设计方法、基站、终端及***

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102036398B (zh) * 2009-09-29 2015-06-03 中兴通讯股份有限公司 一种中继节点及其传输数据的方法
WO2014078981A1 (fr) * 2012-11-20 2014-05-30 华为技术有限公司 Procédé, équipement de réseau et équipement utilisateur servant à ordonnancer des ressources radio

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101674149A (zh) * 2008-09-08 2010-03-17 中兴通讯股份有限公司 一种自适应编码调制方法
US20130028307A1 (en) * 2009-09-15 2013-01-31 Research In Motion Limited Adaptive modulation and coding scheme adjustment in wireless networks
CN102783072A (zh) * 2010-01-06 2012-11-14 阿尔卡特朗讯公司 改善采用可变速率声码器的用户设备的基于ip性能语音的方法
CN104065446A (zh) * 2013-03-21 2014-09-24 上海贝尔股份有限公司 用于信令发送和接收mcs的方法
CN106231680A (zh) * 2016-07-21 2016-12-14 深圳市金立通信设备有限公司 一种控制信息设计方法、基站、终端及***

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