WO2014110833A1 - Procédé de transmission d'informations, procédé de détection et dispositif associé - Google Patents

Procédé de transmission d'informations, procédé de détection et dispositif associé Download PDF

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Publication number
WO2014110833A1
WO2014110833A1 PCT/CN2013/070793 CN2013070793W WO2014110833A1 WO 2014110833 A1 WO2014110833 A1 WO 2014110833A1 CN 2013070793 W CN2013070793 W CN 2013070793W WO 2014110833 A1 WO2014110833 A1 WO 2014110833A1
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WIPO (PCT)
Prior art keywords
information
bandwidth
user equipment
scheduling
system message
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PCT/CN2013/070793
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English (en)
Chinese (zh)
Inventor
徐月巧
王轶
周华
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富士通株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 富士通株式会社 filed Critical 富士通株式会社
Priority to CN201380068359.6A priority Critical patent/CN104885513A/zh
Priority to PCT/CN2013/070793 priority patent/WO2014110833A1/fr
Publication of WO2014110833A1 publication Critical patent/WO2014110833A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/20—Negotiating bandwidth

Definitions

  • the present invention relates to the field of communications, and in particular, to an information sending method, a detecting method, and a device thereof. Background technique
  • 3GPP RAN1 initiated research on low-cost MTC (low-cost MTC), mainly analyzing six cost-reduction techniques and summarizing it to TR36.888.
  • low-cost MTC low-cost MTC
  • the six low-cost technologies mean:
  • the most concerned cost-reduction technology is the reduction of the maximum bandwidth, indicating the maximum bandwidth reduction supported by the MTC UE.
  • the MTC UE exists in an LTE system with a system bandwidth of 20 z
  • the conventional user equipment can support the system bandwidth of 20 z
  • the maximum bandwidth supported by the MTC UE is lower than that of the 20 z.
  • 1. 4fflz, 3 will z or 5fflz.
  • a current method of supporting low bandwidth MTC UEs is to coexist in existing LTE systems.
  • MTC UEs coexist in the LTE system, which means that MTC UEs with low bandwidth capability need to work normally in large bandwidth LTE systems, which requires standardized support.
  • One of the main problems is that MTC UEs with low bandwidth capability cannot demodulate the traditional Physical Down Control Channel (PDCCH) transmitted over the entire system bandwidth.
  • PDCCH Physical Down Control Channel
  • FIG. 1 is a schematic diagram of an LTE system in which MTC UEs coexist in 20 will.
  • the maximum bandwidth of the MTC UE is the physical resource blocks (PBs) of the LTE system, that is, 1. 4 MHz.
  • the traditional PDCCH occupies one frame of the front wide Orthogonal Frequency Division Multiplexing (Orthogonal Frequency Division) Multiplexing, OFDM) Symbol, which spans the entire system bandwidth in the frequency domain.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the maximum bandwidth supported by the MTC UEK UE2, the UE3, and the UE4 is 1. 4 MHz, but the low-bandwidth frequency domain positions of the MTC UE1 and the UE2 are the same, and the low-frequency frequency domain positions of the MTC UE3 and the UE4 are Additional area.
  • FIG. 1 and FIG. 2 are both low-bandwidth MTC UEs coexisting with conventional users in a large-bandwidth LTE system, except that all MTC UEs in FIG. 1 operate at the same low bandwidth, and different MTC UEs in FIG. 2 support the same.
  • the low bandwidth frequency domain locations are different to support more MTC UEs. Since the legacy PDCCH is always transmitted over the entire system bandwidth, whether the PDCCH is mapped to a Common Search Space (CSS) or mapped to a UE-specific Search Space (USS), the above two types None of the low bandwidth MTC UEs can demodulate this legacy PDCCH.
  • CSS Common Search Space
  • USS UE-specific Search Space
  • the content carried by the PDCCH is called Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the DCI can carry dedicated scheduling information to a specific user equipment. It can also carry public scheduling information or public information to certain users. Equipment or all user equipment in the cell.
  • the DCI For the DCI carrying common scheduling information to some user equipments or all user equipments in the cell to indicate the location of the resource where the public information is located, for example, System Information Blocks (SIBs) / Paging messages / messages 2 ( Message2, msg2) DCI, the DCI is identified by the corresponding system information radio network temporary identifier (System Information RNTI, SI-RNTI) / Paging message radio network temporary identifier (Paging RNTI, P-RNTI) / random access radio network temporary identifier (Random Access RNTI, RA-RNTI) scrambles and maps to the common search space, ie CSS; for DCI that directly carries common information such as Transmit Power Control Command (TPC command) to certain user equipments, the downlink The control information directly carries the TPC command, which is scrambled by the corresponding Transmit Power Control RNTI (TPC-RNTI) and mapped to the common search space.
  • SIBs System Information Blocks
  • each low-bandwidth frequency domain location area has a DCI (by PDCCH bearer or ePDCCH bearer) to schedule common information, and each low-bandwidth frequency domain location sends a copy of the public information.
  • the inventors have found that when the scheduling information and the corresponding PDSCH information are copied and transmitted on the low bandwidth supported by each MTC UE, a large amount of control signaling overhead is consumed to schedule the public information; A low-bandwidth frequency domain location needs to send a copy of the common information, and also consumes a large amount of PDSCH resources to transmit the same information, resulting in insufficient resource utilization and limited performance. At present, there is no effective way to obtain the above scheduling information and PDSCH information.
  • the embodiment of the invention provides an information sending method, an information detecting method and a device thereof, which can ensure that a low bandwidth MTC UE can demodulate downlink control information for scheduling common information, and does not consume a large amount of control signaling and resources, thereby improving Resource utilization.
  • a method for transmitting information comprising: transmitting a system message or an updated system message on a preset frequency domain resource, and/or scheduling the system message or the updated Scheduling information of the system message; wherein the preset frequency domain resource occupies a part of the bandwidth of the entire system bandwidth.
  • a second aspect of the present invention provides a method for transmitting information, the method comprising: notifying an updated system message of the low bandwidth user equipment when the low bandwidth user equipment is in a connected state.
  • a third aspect of the present invention provides an information detecting method. For a low bandwidth user equipment, the method includes: detecting, by a low bandwidth user equipment, a scheduling system message or an updated system message on a preset frequency domain resource. Scheduling information; wherein the preset frequency domain resource occupies a part of the bandwidth of the entire system bandwidth.
  • a fourth aspect of the present invention provides a method for receiving information, the method comprising: receiving an updated system message notified by a network side when a low bandwidth user equipment is in a connected state.
  • a sixth aspect of the present invention provides an information transmitting apparatus, where the apparatus includes: a second notifying unit, configured to notify an updated system message when a low bandwidth user equipment is in a connected state The low bandwidth user equipment.
  • a seventh aspect according to an embodiment of the present invention provides a base station, comprising the apparatus of the fifth aspect, or the apparatus of the sixth aspect.
  • a ninth aspect of the embodiments of the present invention provides an information receiving apparatus, where the apparatus includes: a third receiving unit, configured to receive an update of a network side notification when a low bandwidth user equipment is in a connected state System message.
  • a user equipment comprising the apparatus of the eighth aspect or the apparatus of the ninth aspect.
  • An eleventh aspect of the embodiments of the present invention provides an information sending method, where the method includes: sending, when a system message is updated, information that updates a system message to a low bandwidth user equipment;
  • the updated system message is sent on the preset frequency domain resource, where the preset frequency domain resource occupies a part of the bandwidth of the entire system bandwidth.
  • a twelfth aspect of the embodiments of the present invention provides an information detecting method, where the method includes: receiving information of an update system message notified by a network side;
  • a thirteenth aspect of the embodiments of the present invention provides an information sending apparatus, where the apparatus includes: a third sending unit, configured to send, to a low bandwidth user equipment, information for updating a system message;
  • a fourth sending unit configured to send the updated system message on the preset frequency domain resource, where the preset frequency domain resource occupies a part of the bandwidth of the entire system bandwidth.
  • a fifteenth aspect of the embodiments of the present invention provides a method for sending information, including: using a low bandwidth user equipment that is in the same working bandwidth as a user group;
  • a sixteenth aspect of the embodiments of the present invention provides an information detecting method, where the method further includes: detecting, according to a working bandwidth of the low bandwidth user equipment, scheduling information for scheduling public information, where the public information includes a paging message or Random access response information, or detecting a transmit power control command on a working bandwidth of the low bandwidth user equipment;
  • a seventeenth aspect of the embodiments of the present invention provides an information transmitting apparatus, the apparatus comprising: a fifth sending unit, configured to use a low bandwidth user equipment in the same working bandwidth as a user a group that transmits public information including a paging message or a power control command or random access response information, and/or schedules a paging message or random access in the public information on a working bandwidth of each user group The scheduling information of the response message.
  • a fifth sending unit configured to use a low bandwidth user equipment in the same working bandwidth as a user a group that transmits public information including a paging message or a power control command or random access response information, and/or schedules a paging message or random access in the public information on a working bandwidth of each user group The scheduling information of the response message.
  • An eighteenth aspect of the embodiments of the present invention provides a base station comprising the apparatus of the seventeenth aspect.
  • a nineteenth aspect of the present invention provides an information detecting apparatus, the apparatus further comprising: a third information detecting unit, configured to detect a scheduling public on a working bandwidth of the low bandwidth user equipment Scheduling information of the information, the paging information or the random access response information, or the detection of the transmission power control instruction.
  • a twentieth aspect of the embodiments of the present invention provides a user equipment comprising the apparatus of the nineteenth aspect.
  • a twenty-first aspect of the present invention provides a communication system, comprising: the base station according to the seventh aspect, and the user equipment according to the tenth aspect, or the system includes eighteenth The base station and the user equipment of the twentieth aspect.
  • a twenty-second aspect of the embodiments of the present invention provides a computer readable program, wherein the program causes a computer to execute in the detecting device or a base station when the program is executed in an information transmitting device or a base station
  • a twenty-third aspect of an embodiment of the present invention provides a storage medium storing a computer readable program And the computer readable program causes the computer to execute the information transmitting method of the first aspect, the eleventh aspect, or the fifteenth aspect in the detecting device or the base station.
  • a twenty-fourth aspect of the embodiments of the present invention provides a computer readable program, wherein when the program is executed in an information detecting device or a user device, the program causes a computer to be at the detecting device or user device.
  • the information detection method described in the second aspect, the twelfth aspect, and the sixteenth aspect is performed.
  • a twenty-fifth aspect of the embodiments of the present invention provides a storage medium storing a computer readable program, wherein the computer readable program causes a computer to perform a second aspect in the detecting device or user equipment, The information detection method described in the twelfth aspect and the sixteenth aspect.
  • the beneficial effects of the embodiments of the present invention are: sending a system message on a predetermined frequency domain resource, scheduling scheduling information of the system message, or sending public information according to a working bandwidth of a low bandwidth user equipment, or scheduling the public information.
  • the information can ensure that the low bandwidth MTC UE can demodulate the control information for scheduling the system message and obtain the system message, or enable the low bandwidth user equipment to detect the common information on its working bandwidth without consuming a large amount of control signaling. And resources, improve resource utilization.
  • FIG. 1 is a schematic diagram of an LTE system in which MTC UEs coexist in 20 wills;
  • FIG. 2 is a schematic diagram of low bandwidths of different MTC UEs having different frequency domain location configurations
  • Embodiment 3 is a flowchart of a method for transmitting and detecting information according to Embodiment 3 of the present invention
  • Figure 4 is a diagram showing an example of Embodiment 6 of the present invention
  • Figure 5 is a flowchart of a method for transmitting and detecting information according to Embodiment 9 of the present invention
  • FIG. 6 is a block diagram showing the structure of an information transmitting apparatus according to Embodiment 11 of the present invention.
  • Figure 7 is a block diagram showing the structure of an information detecting apparatus according to Embodiment 15 of the present invention.
  • Figure 8 is a block diagram showing the structure of an information detecting apparatus according to Embodiment 16 of the present invention.
  • Figure 9 is a block diagram showing the configuration of an information detecting apparatus in accordance with a seventeenth embodiment of the present invention. detailed description
  • low bandwidth user equipment such as MTC.
  • embodiments of the present invention provide an information sending method, an information detecting method, and an apparatus thereof.
  • the scheduling information of the traditional scheduling system message (SI) mapped to the CSS is sent in a predetermined frequency domain location, and the scheduled system message is also sent in the predetermined frequency domain location, thus, low
  • the bandwidth user equipment such as the MTC UE, may detect scheduling information in the predetermined frequency domain location, and then obtain corresponding system information according to the scheduling information.
  • scheduling information that is traditionally mapped to the CSS to schedule other public information such as scheduling Paging messages, and scheduling information of random access related information (such as Message 2, (Message2, msg2)), according to the low bandwidth user equipment
  • a low-bandwidth user equipment that is to be in the same frequency domain position such as an MTC UE, is used as a user group, and scheduling information for scheduling Paging messages, random access related information, and the foregoing information are sent for each user group.
  • the traditional control information corresponding to the CSS carrying the TPC command is sent according to the frequency domain location where the low bandwidth user equipment is located.
  • the above is equivalent to mapping scheduling information for scheduling a Paging message, random access related information, and control information carrying a transmission power control command to a group-specific Common Search Space (Group-specific CSS). Different user groups have different search spaces.
  • Example 1 The information transmitting method, the information detecting method, and the apparatus thereof according to the embodiments of the present invention are described below with reference to the accompanying drawings.
  • Example 1 The information transmitting method, the information detecting method, and the apparatus thereof according to the embodiments of the present invention are described below with reference to the accompanying drawings.
  • Embodiment 1 of the present invention provides a method for transmitting information.
  • the method includes:
  • the system message or the updated system message is transmitted on the preset frequency domain resource, and/or the scheduling information of the system message or the updated system message is scheduled; wherein the preset frequency domain resource occupies a part of the bandwidth of the entire system bandwidth.
  • the system message (SI) or the updated system information, or the scheduling information of the system information that schedules the system message or the update is sent on a predetermined frequency domain resource, so that the low bandwidth user equipment is initially When accessing the network, or after accessing the network, the scheduling information can be obtained on a preset frequency domain resource, such as a resource block RB in which the system message is located, a modulation coding method (MCS), and the like. Obtaining the above system message or the updated system message according to the scheduling information.
  • SI system message
  • MCS modulation coding method
  • the low-bandwidth user equipment can obtain the foregoing scheduling information on the preset frequency domain resource, further obtain the system message or the updated system message, does not consume a large amount of control signaling and resources, and improves resource utilization. rate.
  • the embodiment 2 of the present invention provides an information detection method.
  • the method includes: a low-bandwidth user equipment detecting scheduling information of a scheduling system message or an updated system message on a preset frequency domain resource;
  • the preset frequency domain resources occupy part of the bandwidth of the entire system bandwidth.
  • the low-bandwidth user equipment can obtain the foregoing scheduling information on the preset frequency domain resource, so that the system message or the updated system message can be obtained according to the scheduling information, and does not consume a large amount of control signaling and resources. , improve resource utilization.
  • the method may further include: acquiring the system message or the updated system message according to the detected scheduling information.
  • the low-bandwidth user equipment may be an MTC UE, and the system message (SI) and the updated system message may be carried by the PDSCH, which is similar to the prior art, and details are not described herein again.
  • Scheduling information for scheduling system messages or updated system messages may be transmitted using a DCI bearer and transmitted on a PDCCH or an enhanced PDCCH (ePDCCH);
  • the scheduling information of the system message for scheduling the update is also carried by the MIB, transmitted on the broadcast channel (PBCH) or the enhanced broadcast channel (ePBCH); or the configuration related scheduling information is pre-configured and notified to the low bandwidth user equipment. ;
  • the partial bandwidth occupied by the preset frequency domain resource is not greater than the low bandwidth user.
  • the maximum bandwidth supported by the device is the same for all low-bandwidth user equipments. That is, the preset frequency domain resource parameters may be cell-specific or MTC-specific.
  • the preset frequency domain resource may occupy a part of the bandwidth of the entire system bandwidth center position, for example, when the working bandwidth of the low bandwidth user equipment is 1. 4 legs 2 , the preset frequency The domain resource can occupy the center of the entire system bandwidth of 6 PRBs, as shown in Figure 1 at the center of the frequency domain resources.
  • the system message may include a master information block (MIB), or a system information block (SIBs).
  • MIB master information block
  • SIBs system information block
  • the above system messages can be sent and detected by the above method.
  • the SIBs message needs to be carried by the corresponding scheduling information (the existing standard is PDCCH bearer), and the SIB message is carried by the PDSCH. Therefore, in the existing standard, the low-bandwidth user equipment cannot demodulate the PDCCH of the traditional SIBs, so that the location of the PDSCH carrying the SIBs cannot be known.
  • the existing standard is PDCCH bearer
  • the low-bandwidth user equipment is used as an example for the MTC UE, but is not limited to the MTC UE.
  • the user equipment working in the low-bandwidth mode can adopt the following method.
  • the system message is the SIBs, and the low-bandwidth user equipment initially accesses the network.
  • the RRC connection process is established as an example for description.
  • Fig. 3 is a flow chart showing the method of transmitting and detecting information according to the third embodiment of the present invention. As shown in FIG. 3, the method includes: a network side:
  • Step 301 The network side sends a system message in a predetermined frequency domain resource, and/or schedules information for scheduling the system message.
  • the network side such as the base station eNB1 on the network side, when the low bandwidth user equipment initially accesses the network, the base station may be a base station serving the low bandwidth user equipment;
  • the predetermined frequency domain resources are as described in Embodiments 1 and 2, and are not described herein again;
  • the system message is similar to the prior art, and is briefly described herein:
  • the system message is configured by a system information block (SIB), and the SIB includes at least SIB1 and SIB2, and the SIB1
  • SIB system information block
  • the following information is included: related mapping information of other SIB messages and a sending period;
  • the SIB2 includes the following information: some common parameter configurations of the cell to which the user equipment belongs, and the public parameters may include common parameters of the physical layer, such as parameter configuration of random access. Information, etc.
  • the SIB message is carried by the PDSCH, and the related scheduling information may be DCI information scrambled by the SI-RNTI, for example, DCI 1A or DCI 1C ; the DCI information can dynamically indicate the sending system message.
  • uplink synchronization needs to be completed, so that an RRC connection can be established and subsequent uplink data transmission can be performed. Therefore, in the process of initially accessing the network by the low-bandwidth user equipment, the foregoing system message needs to be obtained to perform RRC connection establishment.
  • the low-bandwidth user equipment may detect the DCI carrying the scheduling information on the predetermined frequency domain resource, such as the center 6 PRBs, and perform descrambling using the SI-RNTI to obtain the scheduling information, as indicated by the The RB, MCS, and other information of the system message are similar to the prior art, and are not described here.
  • Step 303 Obtain the system message by using the scheduling information.
  • the low-bandwidth user equipment can obtain the resource blocks RB, MCS, and the like where the PDSCH of the system message is located according to the scheduling information, so that the low-bandwidth user equipment can detect the corresponding resource according to the scheduling information.
  • the system message, the detection process is as in the prior art, and details are not described herein again.
  • Step 304 The low bandwidth user equipment performs an RRC connection establishment.
  • the RRC connection establishment process is similar to the prior art, and is not described here.
  • a random access procedure is required, and the public parameters required by the random access procedure may be The system message is obtained.
  • Step 305 The low bandwidth user equipment sends capability information to the network side, where the capability information includes a maximum bandwidth that the user equipment can work.
  • Step 306 The network side receives the capability information, and adjusts the low bandwidth user equipment to a corresponding working bandwidth.
  • the network side can increase the system capacity in order to support more low-bandwidth user equipments.
  • the network side can adjust the low-bandwidth user equipment to different frequency domain locations. On the low bandwidth, it is adjusted to the respective working bandwidth (corresponding to a specific frequency domain location), as shown in FIG. 2; wherein, the RRC reconfiguration message can be used for adjustment.
  • Step 307 Notify the low bandwidth user equipment of the adjusted working bandwidth.
  • the low-bandwidth user equipment adjusts its working bandwidth to the working bandwidth (low bandwidth) notified by the network side, and performs uplink and downlink data transmission and reception on the low bandwidth.
  • the network side maps the scheduling information for scheduling the system message to the cell-specific CSS, and all the low-bandwidth user equipments demodulate the DCI scrambled by the SI-RNTI in the same search space, thereby obtaining the system message.
  • the method further includes:
  • Step 308 updating the system message.
  • Step 309 Notify the low bandwidth user equipment of information that updates the system message.
  • the Paging message can be received by using the Paging message.
  • the Paging message can be received in the manner described in the embodiment of the present invention. The detailed method is described in the following Embodiments 7-9, and details are not described herein.
  • Step 310 Send the updated system message, and/or scheduling information of the system message that schedules the update, on a preset frequency domain resource.
  • step 310 is similar to step 301;
  • the scheduling information for scheduling the updated system message may be carried by the DCI, and may also be carried by a PBCH channel or a Master Information Block (MIB) message transmitted on the enhanced PBCH channel.
  • the DCI or MIB is sent on the preset frequency domain resource, so that all low-bandwidth user equipments demodulate the DCI or MIB on the same search space to obtain the scheduling information.
  • step 310 and step 309 may be performed simultaneously or sequentially, not limited to the sequence in FIG. 3; on the user equipment side:
  • Step 311 Receive information of the updated system message.
  • the network side may carry the information by using the Paging message.
  • the Paging message is sent in the manner of the embodiment of the present invention
  • the specific receiving manner may be adopted in the manner of the embodiment of the present invention, as described in the following embodiments. No longer.
  • Step 312 The low-bandwidth user equipment adjusts its working bandwidth to the preset frequency domain resource. As shown in FIG. 2, if the low-bandwidth user equipment occupies the frequency domain location of the UE1 and the UE2 group, the system message is sent. And the preset frequency domain resource of the scheduling information is the middle 6PRBs, so that the low bandwidth user setting The working bandwidth needs to be adjusted to the bandwidth corresponding to the preset frequency domain resource, and then the scheduling information of the updated system message is detected from the preset frequency domain resource, and the updated system message is obtained.
  • Step 313 and step 314 are similar to step 302 and step 303, and are not described herein again.
  • step 412 is an optional step. If the working bandwidth of the low bandwidth user equipment is exactly on the preset frequency domain resource, the step may be omitted.
  • the low-bandwidth user equipment can obtain scheduling information of the scheduling system message or the updated system message on the preset frequency domain resource, and then obtain the system message or the updated system message, and use the system message to perform data reception. And send.
  • the resource utilization rate is improved, but also a large amount of control signaling can be saved.
  • the scheduling information for scheduling the system message and the updated system message is carried by the DCI or the MIB, and is applicable to the user equipment in the RRC connected state or in the idle state.
  • the updated system message may be directly notified to the low bandwidth user equipment. This case will be described in the following embodiment 4.
  • the scheduling information of the system message for scheduling the update may not be sent, but the network side pre-configures and notifies the low-bandwidth user equipment, at the low After receiving the information of updating the system message, the bandwidth user equipment directly receives the updated system message according to the preset scheduling information.
  • scheduling information may not be transmitted in step 310, and step 313 may be omitted.
  • the updated system message may be SIB1 indicating whether other SIBs are updated. If in the SIB1, when the other SIBs indicated are updated, the following steps can also be used to know the updated SIB messages.
  • the above method further includes:
  • SI-WIND0W system information window
  • the system information window is a time window, which is used to indicate that the user equipment receives other SIBs messages (such as SIB2, SIB3, etc) outside the SIB1 in the time window. No longer.
  • the following steps may be used to obtain other SIB messages that are updated:
  • the scheduling information of the other SIBs is detected on the preset frequency domain resources, and the scheduling information is determined according to the detected scheduling information.
  • the other SIBs of the update are obtained on the preset frequency domain resource.
  • Embodiment 4 of the present invention provides a method for transmitting information.
  • the method includes: notifying the low bandwidth user equipment of the updated system message when the low bandwidth user equipment is in the connected state.
  • the updated system message may be notified by RRC signaling, but is not limited to the above signaling, and may be notified by any other signaling.
  • Embodiment 5 of the present invention further provides an information receiving method.
  • the method includes: receiving an updated system message notified by the network side when the low bandwidth user equipment is in a connected state.
  • the network side notifies the updated system message by using RRC signaling, but is not limited to the foregoing signaling, and may also be notified by any other signaling.
  • the updated system message can be directly notified to the low bandwidth user equipment by signaling, which can save signaling overhead.
  • Figure 4 is a diagram showing an example of Embodiment 6 of the present invention. As shown in Figure 4, the method includes:
  • Step 40 is broad, 408, as described in Embodiment 3, and details are not described herein again.
  • Step 409 notifying the updated system message to the low bandwidth user equipment.
  • Step 410 Receive the updated system message.
  • this embodiment can save signaling overhead.
  • the above embodiment is an embodiment of transmitting a system message, and a method of how to transmit other information transmitted in the CSS will be described below.
  • the other message may include a Paging message, a TPC command, and random access related information (such as message 2, ie, Msg2).
  • Embodiment 7 of the present invention further provides an information transmitting method.
  • the method includes:
  • a low bandwidth user equipment at the same working bandwidth is used as a user group; public information including a paging message or a power control command or random access response information is transmitted on the working bandwidth of each user group, and/or Scheduling information of paging messages or random access response information in the public information is scheduled.
  • the low bandwidth user equipment having the same frequency domain location 0 as the common information may be a user group (MTC Group), such as a Paging message, TPC commands and msg2 are MTC Group units, the set of work The low bandwidth is sent on.
  • the TPC Commands do not need scheduling information and can be directly carried by the control information, so that the control information carrying the TPC commands is sent on the low bandwidth of the group of user equipments, which has the same for each group.
  • Search space such that the low bandwidth user equipment can directly detect the TPC commands; in addition, in the public information, the Paging message and msg2 need scheduling information, and corresponding scheduling of the paging message or random access response information is scheduled.
  • the information is also sent on the low bandwidth of the group of MTC UEs, and has the same search space for each group, so that the low bandwidth user equipment detects the scheduling information, and then obtains the public information at the resource location indicated by the scheduling information. , such as Paging message, random access response (RAR) information.
  • the public search space can be regarded as a group-specific Common Search Space (Group-specific CSS). Different groups have separate different CSS.
  • the network side receives the capability information reported by the user equipment in the RRC connection state, and may adjust different low bandwidth user equipments to their working bandwidths according to the information included in the capability information, as shown in the figure. 2 is shown. In this way, the network side can send the above information to the specific public search space of the group.
  • the method may further include:
  • the capability information sent by the user equipment is received, and the capability information includes a maximum bandwidth that the user equipment can work. According to the capability information, the bandwidth of the low bandwidth user equipment with low bandwidth working capability is adjusted to the respective working bandwidth.
  • the adjusted bandwidth is also notified to the low bandwidth user equipment, as described in Embodiment 3, and details are not described herein.
  • the eighth embodiment of the present invention provides an information detection method.
  • the method further includes: detecting scheduling information for scheduling public information on a working bandwidth of the low bandwidth user equipment, where the public information includes a paging message or random access response information.
  • the power control command is detected on the operating bandwidth of the low bandwidth user equipment.
  • the low bandwidth user equipment can obtain scheduling information for scheduling the public information on its working bandwidth, so that the public information can be obtained according to the scheduling information.
  • the method further includes: The scheduling information obtains the public information.
  • the low bandwidth user equipment can directly detect the control information carrying the power control instruction on its working bandwidth, thereby obtaining the power control instruction without scheduling information.
  • the capability information may be reported to the network side, so that the network side adjusts different low-bandwidth user equipments to their respective jobs according to the bandwidth information included in the capability information. Bandwidth, as shown in Figure 2. In this way, the network side can send the above information to the specific public search space of the group.
  • the method further includes: transmitting capability information of the low bandwidth user equipment to the network side, where the capability information includes a maximum bandwidth that the low bandwidth user equipment can work;
  • the capability information determines the working bandwidth of the low bandwidth user equipment.
  • the low bandwidth user equipment detects scheduling information for scheduling the public information on its working bandwidth, and obtains corresponding public information according to the scheduling information.
  • the common information is described as an example of a paging message, a transmission power control command, or a random access response message.
  • Fig. 5 is a flow chart showing the method of transmitting and detecting information according to the ninth embodiment of the present invention. As shown in FIG. 5, the method includes: On the user equipment side:
  • Step 501 The low bandwidth user equipment establishes an RRC connection with the network side.
  • the steps 502 to 504 are performed.
  • the foregoing steps are similar to the steps 30 ⁇ 307 and 40 ⁇ 407 shown in FIG. 3 and FIG. 4, and details are not described herein again.
  • Step 505 Use a low-bandwidth user equipment that is in the same working bandwidth as a user group, and send public information on a working bandwidth of each user group.
  • the public information is a paging message or a random access response message, and the public information is carried by the PDSCH.
  • Step 506 A low-bandwidth user equipment that is in the same working bandwidth is used as a user group, and scheduling information for scheduling the public information is sent on a working bandwidth of each user group.
  • the scheduling information may be carried by the DCI and transmitted in the PDCCH.
  • FIG. 5 is only the present invention. Example.
  • Step 507 The low-bandwidth user equipment detects scheduling information for scheduling public information on its working bandwidth.
  • the specific detection mode is similar to the prior art, and details are not described herein again.
  • the TPC commands may be carried by the control information, and the low-bandwidth user equipment directly detects the control information that carries the TPC commands to obtain the TPC commands.
  • Step 506, step 508, and step 507 are correspondingly: detecting control information carrying the TPC commands on the working bandwidth of the low bandwidth user equipment.
  • the Paging message is carried by the PDSCH, and the scheduling information is a DCI indication scrambled by the P-RNTI. All users in the cell demodulate the DCI scrambled by the P-RNTI in the same search space, learn the scheduling message of the Paging, and then demodulate the PDSCH carrying the Paging message at the corresponding resource location according to the scheduling information. By comparing the user identifier carried in the Paging message with its own UE ID, it is known whether the paging message is sent to itself. The Paging message can be used to notify the UE system of changes in the message, including the MIB message and the SIB message.
  • the low-bandwidth MTC UEs operating in different frequency domain locations the low-bandwidth MTC UEs in the same frequency domain location are grouped, and receive the P-RNTI-scrambled DCI information to obtain scheduling information, so according to the scheduling.
  • the information demodulates the PDSCH carrying the Paging message at the corresponding time-frequency location.
  • the scheduling information of the Paging message has a Group-specific CSS, and the DCI carrying the scheduling information and the PDSCH carrying the paging message of the DCI scheduling are all sent on the low bandwidth of the group of MTC UEs;
  • the MTC UE, the scheduling information of the Paging message is sent on the low bandwidth of the MTC UE groups, and the same is true for the scheduled Paging message transmission.
  • the DCIs used by different user groups to demodulate scheduling Paging messages may be scrambled with cell-specific P-RNTI or group-specific P-RNTI.
  • Example 2 For the TPC command, the TPC command is used to adjust the uplink transmit power of the user, and the closed loop power control command is sent.
  • the TPC command is sent in the signaling, and the DCI 3/3A is scrambled by the TPC-RNTI notified by the upper layer RRC signaling, mapped to the CSS, and carries the TPC command commands of multiple UEs.
  • DCI 3/3A scrambled by TPC-RNTI with CSS is transmitted over the entire system bandwidth like other DCI signaling with CSS. For low bandwidth MTC UEs with different frequency domain locations, the DCI signaling cannot be demodulated.
  • the low-bandwidth MTC UEs having the same frequency domain location are grouped, and the DCI 3/3A signaling carries the TPC command command of the same group of MTC UEs, and has a Group-specif ic CSS.
  • Different groups of MTC UEs demodulate the TPC-RNTI scrambled DCI 3/3A on the low bandwidth of their respective operations, so as to know that their own TPC commando different groups can use the cell-specific TPC to demodulate the DCI information for transmitting the TPC command.
  • Example 3 For random access related information, the msg2 message, the msg2 transmission is the second step in the contention random access procedure, after the eNB detects the random access sequence, determines the RA according to the detected time-frequency position of the sequence. - RNTI, then transmit the DCI scrambled by the RA-RNTI in the second step, thereby scheduling Random Access Response (RAR) information transmitted in the PDSCH.
  • the DCI information scrambled by the RA-RNTI is similar to the DCI information scrambled by the P-RNTI and the TPC-RNTI, mapped in the CSS, and transmitted over the entire system bandwidth.
  • the RAI that is scrambled by the RA-RNTI cannot be demodulated, so that the RAR cannot be known.
  • the random access sequence can be sent on the low bandwidth of each working, so that the eNB clearly knows which group when demodulating the random access sequence.
  • the MTC UE is transmitting a random access sequence.
  • the eNB sends the RA-RNTI scrambled DCI and the msg2 scheduled by the DCI, that is, the RAR information carried on the PDSCH, on the working bandwidth of the corresponding group for the random access of the different groups of MTC UEs.
  • the method for obtaining the foregoing system message and the public information by the low-bandwidth user equipment may be used in combination according to the actual scenario, and details are not described herein again.
  • the storage medium may include: a ROM, a RAM, a magnetic disk, an optical disk, and the like.
  • the embodiment of the invention further provides an information sending device and an information detecting device, a user equipment and a base station.
  • an information sending device and an information detecting device As described in the examples below. Since the information transmitting device and the information detecting device, the user equipment, and the base station solve the problem The principle is similar to the above-mentioned method based on the information transmitting device and the information detecting device, the user equipment, and the base station. Therefore, the implementation of the device, the user equipment, and the base station can be referred to the implementation of the method, and the repeated description is not repeated.
  • Embodiment 10 of the present invention further provides an information transmitting apparatus.
  • the device includes: a first sending unit, configured to send a system message or an updated system message on a preset frequency domain resource, and/or scheduling information of the system message or the updated system message;
  • the preset frequency domain resource occupies part of the bandwidth of the entire system bandwidth.
  • the preset frequency domain resource is as described in Embodiment 1-9, and details are not described herein again.
  • the device may be a network-side functional entity, such as a base station, and its workflow is as described in Embodiment 1, and is not described herein.
  • the network side may send the system message or the updated system message on the preset frequency domain resource, so that the low bandwidth user equipment acquires the scheduling information and the corresponding system message on the frequency domain resource or Updated system messages improve resource utilization and save on signaling overhead.
  • Figure 6 is a block diagram showing the structure of an information transmitting apparatus in accordance with an eleventh embodiment of the present invention.
  • the device 600 includes: a first sending unit 601, which functions similarly to the embodiment 10, and details are not described herein again.
  • the apparatus 600 may further include an information updating unit 602, configured to update the system message, and notify the first sending unit 601 of the updated system message, so that the device 600 passes the updated system message to the first sending unit. 601 is sent to the user equipment side.
  • an information updating unit 602 configured to update the system message, and notify the first sending unit 601 of the updated system message, so that the device 600 passes the updated system message to the first sending unit. 601 is sent to the user equipment side.
  • the apparatus 600 may further include a first notification unit 603 for notifying the low bandwidth user equipment of the information of the update system message.
  • the user equipment receives the system message and the scheduling information for scheduling the system message at a preset central location according to the information.
  • the information of the update system message may be carried by the Paging message, and the scheduling information for scheduling the Paging message and the Paging message are both sent in the group-specific CSS, as in Embodiment 7- 9 is not repeated here.
  • the information of the update system message may be carried by the DCI and transmitted on the PDCCH.
  • it may also be carried by the MIB, and the DCI and the MIB are both sent on the preset frequency domain resources.
  • the device 600 further includes a first receiving unit 604 and a first processing unit 605,
  • the first receiving unit 604 is configured to receive the capability information that is sent by the user equipment, where the capability information includes a maximum bandwidth that the user equipment can work.
  • the first processing unit 605 is configured to use the low bandwidth working capability according to the capability information. The bandwidth of the bandwidth user equipment is adjusted to the respective working bandwidth. Specifically, as described in Embodiment 3, details are not described herein again.
  • the first sending unit 601 may not send the scheduling information of the updated system message, and the scheduling information is pre-configured by the network side and notifies the user equipment.
  • the user equipment obtains the scheduling information, and after receiving the information of the system message notified by the network side, obtains the updated system information according to the scheduling information.
  • the apparatus 600 may further include: an information configuration unit and a notifying unit (not shown) for configuring the scheduling information; the notifying unit is configured to notify the user equipment of the scheduling information.
  • the network side may send the system message or the updated system message on the preset frequency domain resource, and may send the information of the update system message to the user equipment side, so that the low bandwidth user equipment is
  • the scheduling information and the corresponding system message or the updated system message are obtained on the frequency domain resource, which improves resource utilization and saves signaling overhead.
  • Embodiment 12 of the present invention further provides an information transmitting apparatus.
  • the transmitting device further includes a second sending unit, configured to use the low bandwidth user equipment in the same working bandwidth as a user group in each user group.
  • the public information including the paging message or the transmission power control instruction or the random access response information, and/or the scheduling information of the paging message or the random access response information in the common information are transmitted on the working bandwidth.
  • a second sending unit configured to use the low bandwidth user equipment in the same working bandwidth as a user group in each user group.
  • the public information including the paging message or the transmission power control instruction or the random access response information, and/or the scheduling information of the paging message or the random access response information in the common information are transmitted on the working bandwidth.
  • the network side may send the system message or the updated system message on the preset frequency domain resource, and send other public information and/or schedule the other public information by using the group-specific ess.
  • the scheduling information is such that the low-bandwidth user equipment obtains scheduling information and corresponding system messages or updated system messages on the frequency domain resources, obtains corresponding public information on respective working bandwidths, improves resource utilization, and saves
  • the signaling overhead solves the problems in the prior art.
  • the above embodiment 12 can be used in combination with the embodiments 10 and 11.
  • Embodiment 13 of the present invention provides an information sending apparatus, where the apparatus includes a second notification unit, configured to notify an updated system message of the low bandwidth when a low bandwidth user equipment is in a connected state. Household equipment.
  • the updated system message can be directly notified to the low bandwidth user equipment, further reducing the signaling overhead.
  • the apparatus may further include: a first sending unit, as described in Embodiment 11, for transmitting system messages and/or scheduling information of scheduling the system message; and further comprising an information updating unit 602, The system message is updated, and the second notification unit sends the updated system message to the user equipment.
  • a first sending unit as described in Embodiment 11, for transmitting system messages and/or scheduling information of scheduling the system message; and further comprising an information updating unit 602, The system message is updated, and the second notification unit sends the updated system message to the user equipment.
  • the device may be a network-side functional entity, such as a base station, as shown in the corresponding embodiment in FIG. 4, and details are not described herein again.
  • the foregoing embodiments may be used in any combination according to actual conditions, such as the use of the embodiment 10 or 11 and the embodiment 12, and the details are not described herein again.
  • Embodiment 14 of the present invention provides a base station, which may include the apparatus described in Embodiments 10 to 13 above.
  • the working mode is as described in the foregoing embodiment, and details are not described herein again.
  • the system message or the updated system message may be sent on a preset frequency domain resource, and other public information is sent by the group-specific CSS and/or scheduling information of the other public information is scheduled.
  • the low-bandwidth user equipment obtains the scheduling information and the corresponding system message or the updated system message on the frequency domain resource, obtains corresponding public information on the working bandwidth, improves resource utilization, and saves signaling overhead.
  • Figure 7 is a block diagram showing the configuration of an information detecting apparatus according to a fifteenth embodiment of the present invention.
  • the apparatus 700 includes: a first detecting unit 701, configured to detect scheduling information of a scheduling system message or an updated system message on a preset frequency domain resource; wherein, the preset Frequency domain resources occupy part of the bandwidth of the entire system bandwidth.
  • the low-bandwidth user equipment can obtain the scheduling information on the preset frequency domain resources, so as to further obtain the corresponding system message or the updated system message, which solves the problems in the prior art.
  • the apparatus 700 further includes: a first information acquiring unit 702, where the first information acquiring unit 702 is configured to acquire the system message or the updated system on the preset frequency domain resource according to the detected scheduling information. Message.
  • the preset frequency domain resource is as described in Embodiment 1, and details are not described herein again.
  • Example 16 Figure 8 is a block diagram showing the configuration of an information detecting apparatus according to a sixteenth embodiment of the present invention.
  • the device 800 includes a first detecting unit 801 and a first information acquiring unit 802. Further, when the system message is an updated system message, the device 800 further includes: a second receiving unit 803, a second receiving unit 803, configured to receive information of an update system message notified by the network side;
  • the first detecting unit 701 detects the scheduling information of the updated system message when the second receiving unit 703 receives the information of the updated system message.
  • the information of the update system message is carried by the paging message, but is not limited to such a message, and any other message may be used.
  • the apparatus 800 may further include a second processing unit 806, and the second processing unit 806 is configured to: after receiving the information of the updated system message received by the second receiving unit 803, the working bandwidth is Adjust to the default frequency domain resource. After adjusting the working bandwidth, the first detecting unit 801 can detect the corresponding scheduling information and the updated system information on the adjusted working bandwidth.
  • the component is an optional component, and may be omitted when the working bandwidth of the low bandwidth user equipment is in a preset frequency domain resource corresponding to the system message and the scheduling information that sends the update.
  • the scheduling information of the system message for scheduling the update is carried by the downlink control information DCI or the MIB message, as described in the foregoing Embodiment 1-9, and details are not described herein again.
  • the apparatus 800 further includes: a third transmitting unit 804 and a third receiving unit 805;
  • the third sending unit 804 is configured to send the capability information of the low-bandwidth user equipment to the network side, where the capability information includes a maximum bandwidth that the low-bandwidth user equipment can work; and the third receiving unit 805 is configured to receive the network-side return according to the The capability information determines the working bandwidth of the low bandwidth user equipment.
  • the low-bandwidth user equipment can obtain scheduling information on a preset frequency domain resource, so as to further obtain a corresponding system message or an updated system message, which solves the problems in the prior art;
  • the capability information can also be sent to the network side, so that the network side adjusts its working bandwidth according to the capability information.
  • FIG. 9 is a block diagram showing the configuration of an information detecting apparatus in accordance with a seventeenth embodiment of the present invention.
  • the device 900 includes: a second information detecting unit 901, configured to detect scheduling information of a paging message or random access response information in the scheduling public information on a working bandwidth of the low bandwidth user equipment, or detect and send Power control instructions. It can be seen that the low-bandwidth user equipment can detect the scheduling information sent by the network side or directly detect the TPC commands on its working bandwidth, so that the public information can be obtained according to the scheduling information, which solves the problems in the prior art.
  • the device 900 further includes: a second information acquiring unit 902, configured to obtain, according to the scheduling information detected by the second information detecting unit 901, the paging message or the random access response information.
  • the public information configured to obtain, according to the scheduling information detected by the second information detecting unit 901, the paging message or the random access response information.
  • the second information acquisition unit 902 is not required, and the component is an optional component.
  • the device 900 can be used in combination with the above-described Embodiment 15 and Embodiment 16.
  • the apparatus may further include: a third information acquiring unit (not shown) when the other SIBs are updated.
  • the third information acquiring unit is configured to search for the updated frequency domain resource in the corresponding system information window according to the pre-configured related information and the system information window (SI-WIND0W) configured in the SIB1.
  • SI-WIND0W system information window
  • the SIB is configured to detect scheduling information of the other SIBs on the preset frequency domain resources, and obtain the updated other SIBs on the preset frequency domain resources according to the detected scheduling information.
  • Embodiment 18 of the present invention also provides an information receiving apparatus.
  • the apparatus includes: a fourth receiving unit (not shown) for receiving an updated system message notified by the network side when the low bandwidth user equipment is in the connected state.
  • the device can receive and transmit data according to the updated system message.
  • the device can be used in combination with the above embodiments.
  • the embodiment of the present invention provides a user equipment, which may be the apparatus described in any of the embodiments 15 to 17, and details are not described herein again.
  • the embodiment of the present invention further provides a communication system, which includes the base station and the embodiment described in Embodiment 14.
  • the workflow of the communication system is as described in Embodiments 1-9, and details are not described herein again.
  • the embodiment of the invention further provides a computer readable program, wherein when executed in an information transmitting device or a base station In the program, the program causes the computer to execute the information transmitting method as described in Embodiments 1, 3-4, 6-7, and 9 in the information transmitting device or the base station.
  • the embodiment of the invention further relates to a storage medium storing a computer readable program, wherein the computer readable program causes the computer to execute the embodiments 1, 3-4, 6-7, 9 in the information transmitting device or the base station The information transmission method described.
  • An embodiment of the present invention further provides a computer readable program, wherein when the program is executed in an information detecting apparatus or a user equipment, the program causes a computer to execute Embodiment 2-3 in the information detecting apparatus or a base station, Information detection methods described in 5-6 and 8-9.
  • Embodiments of the present invention also provide a storage medium storing a computer readable program, wherein the computer readable program causes a computer to execute Embodiments 2-3, 5-6, 8-9 in the detecting device or base station The information detection method described.
  • the above apparatus and method of the present invention may be implemented by hardware, or may be implemented by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.

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Abstract

La présente invention concerne un procédé de transmission d'informations, un procédé de détection et un dispositif associé, le procédé de transmission d'informations comprenant l'étape consistant à : transmettre, sur une ressource de domaine de fréquence prédéfinie, un message de système ou un message de système mis à jour, et/ou les informations de programmation qui programment le message de système ou le message de système mis à jour, la ressource de domaine de fréquence prédéfinie occupant une partie de la bande passante de la totalité du système. En variante, un dispositif côté réseau définit les équipements utilisateurs (UE) de faible bande passante dans la même bande passante de fonctionnement comme étant un groupe d'utilisateurs ; et transmet, sur la bande passante de fonctionnement de chaque groupe d'utilisateurs, les informations communes contenant un message de radiomessagerie, une instruction de commande de puissance de transmission ou les informations de réponse d'accès aléatoire, et/ou les informations de programmation qui programment le message de radiomessagerie ou les informations de réponse d'accès aléatoire dans les informations communes. Un mode de réalisation de la présente invention améliore le taux d'utilisation des ressources.
PCT/CN2013/070793 2013-01-21 2013-01-21 Procédé de transmission d'informations, procédé de détection et dispositif associé WO2014110833A1 (fr)

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