WO2017167148A1 - 一种信息发送方法、接收方法和装置 - Google Patents

一种信息发送方法、接收方法和装置 Download PDF

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Publication number
WO2017167148A1
WO2017167148A1 PCT/CN2017/078289 CN2017078289W WO2017167148A1 WO 2017167148 A1 WO2017167148 A1 WO 2017167148A1 CN 2017078289 W CN2017078289 W CN 2017078289W WO 2017167148 A1 WO2017167148 A1 WO 2017167148A1
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Prior art keywords
physical downlink
channel
configuration information
short tti
information
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PCT/CN2017/078289
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English (en)
French (fr)
Inventor
陈冬雷
夏树强
游爱民
戴谦
Original Assignee
中兴通讯股份有限公司
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Priority claimed from CN201610304255.6A external-priority patent/CN107295671A/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017167148A1 publication Critical patent/WO2017167148A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to, but is not limited to, the field of LTE (Long Term Evolution) and the NR (New Radio) mobile communication network, and more particularly to an information transmitting method, a receiving method and a device.
  • LTE Long Term Evolution
  • NR New Radio
  • the LTE mobile communication network has been researched from 3GPP (3rd Generation Partnership Project) and has used 1ms subframes for data transmission. With the emergence of new applications with higher latency, such as virtual reality, real-time cloud computing, etc., new requirements are also put forward for LTE networks, such as reducing air interface transmission delay. Therefore, research projects for air interface transmission are needed. In the 3GPP RAN #67 conference, research items on reducing air interface transmission delay were adopted. In this study, it is pointed out that it is necessary to evaluate the performance gains caused by the length of the Transmission Time Interval (TTI), including the OFDM (Orthogonal Frequency Division Multiplexing) symbol of TTI length, 2 OFDM symbols, 3 OFDM symbols, 4 OFDM symbols, and 7 OFDM symbols. As the length of the TTI becomes shorter, if the DCI (downlink control information) is designed in the previous manner, the control channel overhead is relatively large.
  • TTI Transmission Time Interval
  • OFDM Orthogonal Frequency Division Multiplexing
  • Two levels of DCI, slow DCI and fast DCI, are introduced in the downlink and uplink to reduce the overhead of the control channel in the short TTI.
  • a common resource allocation is performed by using one or more sets of PRBs (Physical Resource Blocks) in a subframe, and each group of PRBs includes one or more PRB pairs, as shown in FIG. 1 .
  • PRBs Physical Resource Blocks
  • FIG. 1 a schematic of two sets of PRB pairs is given, where there is only one PRB pair in one set of PRB pairs and three PRB pairs in another set of PRB pairs.
  • For a group of PRB pairs only one terminal can be used in one short TTI, and different terminals can use the same set of PRB pairs between different short TTIs within one subframe. In this way, the terminals using the same set of PRBs have the same resource allocation information in one subframe and can be transmitted in the slow DCI, and only the relevant resource allocation index needs to be transmitted in the fast DCI.
  • SIB System Information Block
  • the embodiments of the present invention provide an information sending method, a receiving method, and a device, which can improve information transmission efficiency of an LTE network system.
  • An embodiment of the present invention provides a method for sending information, including:
  • the predetermined radio network temporary identifier RNTI to scramble the cyclic redundancy code CRC part and the physical downlink shared channel in the physical downlink control channel, where the scrambled physical downlink shared channel carries system information of a specific service
  • the specific service includes at least one of a short transmission time interval TTI communication service and a device to device D2D service;
  • the scrambling of the CRC part and the physical downlink shared channel in the physical downlink control channel by using the predetermined RNTI includes:
  • the predetermined RNTI is different.
  • the sending, by the physical downlink control channel, the physical downlink shared channel and the physical downlink shared channel to the terminal supporting the specific service includes:
  • the scrambled physical downlink control channel and the physical downlink shared channel are sent in one or more subframes of a group of discontinuous subframes.
  • the set of discontinuous subframes is determined by at least one of: a discontinuous reception period, an offset of the starting subframe within the system frame in the discontinuous period, and a starter The frame starts to detect the number of subframes of the physical downlink control channel.
  • the method further includes: the base station transmitting, by using a radio resource control RRC dedicated message, a parameter for determining the set of discontinuous subframes to the terminal or the terminal to access the network, before the base station uses the system broadcast message
  • the parameters determining the set of discontinuous subframes are sent to all terminals.
  • the specific service is a short transmission time interval TTI communication service
  • the system information is public radio resource configuration information
  • the CRC part and the physical downlink shared channel in the physical downlink control channel are used by using a predetermined RNTI pair.
  • Scrambling includes:
  • the CRC part in the physical downlink control channel and the physical downlink shared channel are scrambled by using a group RNTI, where the scrambled physical downlink shared channel carries common radio resource configuration information supporting short TTI communication,
  • the group RNTI is shared by a group of the terminals supporting the short TTI.
  • the public radio resource configuration information supporting the short TTI communication includes one or more of the following: a downlink related channel available bandwidth, an uplink related channel available bandwidth, and a physical downlink in a short TTI.
  • Control channel or common physical downlink control channel common configuration information in a short TTI physical hybrid automatic retransmission indication channel related common configuration information in a short TTI, physical uplink control channel common configuration information in a short TTI, located in a short TTI
  • the downlink related channel available bandwidth is one or more sets of physical resource block PRB pairs
  • the uplink related channel available bandwidth is one or more sets of PRB pairs
  • the set of PRBs Pairs include one or more PRB pairs.
  • the embodiment of the invention further provides a method for sending information, including:
  • the radio resource control RRC connection message Transmitting, by the radio resource control RRC connection message, system information of the specific service to a terminal supporting a specific service, where the system information includes related parameters of a set of discontinuous subframes for determining the system information update, the correlation
  • the parameter includes one or more of the following: a discontinuous reception period, an offset of the starting subframe within the system frame in the discontinuous period, and a number of subframes of the physical downlink control channel to be detected starting from the starting subframe.
  • the specific service is a short transmission time interval TTI communication service
  • the system information is public radio resource configuration information
  • the radio resource control RRC connection message is sent to a terminal supporting a specific service.
  • System information for a specific business includes:
  • the base station sends common radio resource configuration information supporting the short TTI communication to the terminal supporting the short transmission time interval TTI, where the public radio resource configuration information supporting the short TTI communication includes one or more of the following: downlink related channel available bandwidth The uplink-related channel available bandwidth, the physical downlink control channel in the short TTI or the enhanced physical downlink control channel common configuration information in the short TTI, and the physical hybrid automatic retransmission indication channel common configuration information in the short TTI.
  • Physical uplink control channel common configuration information in a short TTI physical downlink shared channel common configuration information in a short TTI, physical uplink shared channel common configuration information in a short TTI, and channel sounding reference signal SRS common configuration information for a short TTI , uplink power control public configuration information.
  • the downlink related channel available bandwidth is one or more sets of physical resource block PRB pairs
  • the uplink related channel available bandwidth is one or more sets of PRB pairs
  • the set of PRBs Pairs include one or more PRB pairs.
  • the embodiment of the invention further provides an information receiving method, including:
  • the physical downlink control channel common search space Receiving, by using a predetermined radio network temporary identifier RNTI, the physical downlink control channel common search space, and detecting the physical downlink downlink channel indicated by the physical downlink control channel when detecting the physical downlink control channel scrambled by the predetermined RNTI Where the physical downlink The enjoy channel is scrambled by the predetermined RNTI;
  • the system information of the specific service is obtained by using the physical downlink shared channel.
  • the predetermined RNTI is different when the system information carried by the scrambled physical downlink shared channel is used for different specific services.
  • detecting, by using a predetermined RNTI, the physical search channel common search space includes:
  • the system information of the specific service is detected on a set of non-contiguous subframes using a predetermined RNTI.
  • the set of discontinuous subframes is determined by at least one of: a discontinuous reception period, an offset of the starting subframe within the system frame in the discontinuous period, and a starter The frame starts the number of subframes of the PDCCH to be detected.
  • parameters for determining the set of non-contiguous subframes are received by an RRC dedicated message or by a system broadcast message.
  • the specific service is a short transmission time interval TTI communication service
  • the system information is public radio resource configuration information
  • the obtaining the system information of the specific service by using the physical downlink shared channel includes: using the The physical downlink shared channel obtains common radio resource configuration information supporting short transmission time interval TTI communication
  • the public radio resource configuration information supporting the short TTI communication includes one or more of the following: downlink related channel available bandwidth, uplink The channel-related channel available bandwidth, the physical downlink control channel in the short TTI or the enhanced physical downlink control channel common configuration information in the short TTI, and the physical hybrid automatic retransmission indication channel related common configuration information in the short TTI, located in the short TTI Physical uplink control channel common configuration information, physical downlink shared channel common configuration information in a short TTI, physical uplink shared channel common configuration information in a short TTI, channel sounding reference signal SRS common configuration information for a short TTI, uplink Power control common configuration information.
  • the downlink related channel available bandwidth is one or more sets of PRB pairs
  • the uplink related channel available bandwidth is one or more sets of PRB pairs
  • the set of PRB pairs includes one Or multiple PRB pairs.
  • the public radio resource configuration information and the object located in the short TTI Dedicating the dedicated control information carried on the downlink control channel, demodulating the physical downlink shared channel located in the short TTI or transmitting the physical uplink shared channel located in the short TTI.
  • the embodiment of the invention further provides an information receiving method, including:
  • the system information includes related parameters of a set of discontinuous subframes for determining the system information update
  • the related parameters include one or more of the following : a discontinuous reception period, an offset of the starting subframe within the system frame in the discontinuous period, and a number of subframes of the physical downlink control channel to be detected starting from the starting subframe.
  • the system information of the specific service that is sent by the receiving base station to control the RRC connection message by the radio resource includes: the terminal supporting the short transmission time interval TTI receives the common radio resource configuration information for supporting the short TTI communication, where the support is short.
  • the common radio resource configuration information of the TTI communication includes one or more of the following: downlink related channel available bandwidth, uplink related channel available bandwidth, physical downlink control channel in a short TTI, or enhanced physics in a short TTI
  • the downlink control channel common configuration information includes one or more of the following: downlink related channel available bandwidth, uplink related channel available bandwidth, physical downlink control channel in a short TTI, or enhanced physics in a short TTI
  • the downlink control channel common configuration information includes one or more of the following: downlink related channel available bandwidth, uplink related channel available bandwidth, physical downlink control channel in a short TTI, or enhanced physics in a short TTI
  • the downlink control channel common configuration information includes one or more of the following: downlink related channel available bandwidth, uplink related channel available bandwidth, physical downlink control channel in a short TTI, or enhanced physics in a short TTI
  • the downlink control channel common configuration information includes one or more of the following: downlink related channel available bandwidth, uplink related channel available bandwidth, physical downlink control channel
  • the downlink related channel available bandwidth is one or more sets of physical resource block PRB pairs
  • the uplink related channel available bandwidth is one or more sets of PRB pairs
  • the set of PRBs Pairs include one or more PRB pairs.
  • An embodiment of the present invention further provides an information sending apparatus, including:
  • the scrambling module is configured to scramble the cyclic redundancy code CRC part and the physical downlink shared channel in the physical downlink control channel by using a predetermined radio network temporary identifier RNTI; wherein the scrambled physical downlink shared channel carries a specific System information of the business;
  • the first communication module is configured to send the scrambled physical downlink control channel and the physical downlink shared channel to a terminal that supports the specific service.
  • the specific service includes a short transmission time interval TTI communication service, and Preparing at least one of the device D2D services;
  • the predetermined wireless network temporary identifier RNTI is different.
  • the first communication module is configured to: when the updated system information of the specific service is sent, the scrambled physical downlink control channel and the physical downlink shared channel are in a group of discontinuous subframes. Transmitted on one or more subframes, the set of non-contiguous subframes being determined by at least one or more of the following parameters: a discontinuous reception period, an offset of the starting subframe within the system frame within the discontinuous period, The number of subframes of the physical downlink control channel to be detected starting from the starting subframe.
  • the first communication module is further configured to: send, by using an RRC dedicated message, a parameter for determining the set of discontinuous subframes to a terminal or a terminal to access the network, and use the system to broadcast a message.
  • the parameters for determining the set of non-contiguous subframes are sent to all terminals.
  • the specific service is a short transmission time interval TTI communication service
  • the system information is public radio resource configuration information
  • the scrambling module is configured to: use a group RNTI to be in the physical downlink control channel.
  • the CRC portion and the physical downlink shared channel are scrambled, and the scrambled physical downlink shared channel carries common radio resource configuration information supporting short transmission time interval TTI communication, the group RNTI being shorted by a set of the support TTI terminal sharing.
  • the first communication module is configured to:
  • the scrambled physical downlink shared channel is transmitted by using quadrature phase shift keying QPSK modulation.
  • An embodiment of the present invention further provides an information sending apparatus, including:
  • a second communication module configured to send system information of the specific service to a terminal supporting a specific service by using a radio resource control RRC connection message, where the system information includes a set of discontinuous subframes for determining update of the system information
  • the related parameters include one or more of the following: a discontinuous reception period, an offset of the starting subframe in the system frame in the discontinuous period, and a child to be detected from the starting subframe to detect the physical downlink control channel The number of frames.
  • An embodiment of the present invention further provides an information receiving apparatus, including:
  • the detecting module is configured to adopt a predetermined radio network temporary identifier RNTI in physical downlink control Channel common search space for detection;
  • a first receiving module configured to receive a physical downlink shared channel indicated by the physical downlink control channel when detecting a physical downlink control channel that is scrambled by using the predetermined RNTI, where the physical downlink shared channel is Scheduled RNTI scrambling;
  • a configuration module configured to obtain system information of a specific service by using the physical downlink shared channel.
  • the predetermined RNTI is different when the system information carried by the scrambled physical downlink shared channel is used for different specific services.
  • the detecting module is configured to:
  • the system information of the specific service is detected on a set of non-contiguous subframes using a predetermined RNTI.
  • the first receiving module is further configured to receive a parameter for determining the set of discontinuous subframes by using an RRC dedicated message or by a system broadcast message.
  • the specific service is a short transmission time interval TTI communication service
  • the system information is public radio resource configuration information
  • the configuration module is configured to: obtain a short transmission time interval by using the physical downlink shared channel.
  • the common radio resource configuration information of the TTI communication where the public radio resource configuration information supporting the short TTI communication includes one or more of the following: a downlink related channel available bandwidth, an uplink related channel available bandwidth, and is located in a short TTI
  • the method further includes:
  • a data channel processing module configured to demodulate a physical downlink shared channel located in a short TTI or send the short TTI according to the common radio resource configuration information and dedicated control information carried on a physical downlink control channel located in a short TTI Physical uplink shared channel.
  • An embodiment of the present invention further provides an information receiving apparatus, including:
  • a second receiving module configured to receive system information of a specific service sent by the base station by using a radio resource control RRC connection message, where the system information includes related parameters of a set of discontinuous subframes for determining the system information update, where the correlation
  • the parameter includes one or more of the following: a discontinuous reception period, an offset of the starting subframe within the system frame in the discontinuous period, and a number of subframes of the physical downlink control channel to be detected starting from the starting subframe.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed by the processor.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the above information receiving method.
  • the base station can send the corresponding system information update to the terminal supporting the specific service as needed, thereby avoiding the terminal power consumption problem caused by the system information update in the LTE network, and transmitting the specificity after the terminal accesses the network.
  • the system information of the service also avoids the continuous transmission of system information of various specific services in the LTE network, reduces the waste of wireless resources and energy consumption of the base station, and improves the transmission efficiency of the system information.
  • the embodiment of the present invention can better support the different bandwidth requirements of the short TTI terminal, and avoid sending different slow DCIs for multiple sets of PRB pairs simultaneously in one subframe, and can also avoid
  • the downlink DCI is sent to the downlink and the uplink respectively.
  • the common resource allocation information is sent on the PDSCH.
  • the existing DCI format in the standard can be used to avoid introducing a new DCI format in the PDCCH.
  • Figure 1 is a schematic diagram of one or more sets of PRB pairs
  • FIG. 2 is a flowchart of a method for sending information according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for receiving information according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an information sending apparatus according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an information receiving apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of detecting, by a terminal supporting short TTI, a STTI-RNTI scrambled PDCCH channel on a set of discontinuous subframes according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of detecting, by a terminal supporting short TTI, a STTI-RNTI scrambled PDCCH channel on a set of discontinuous subframes according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a base station transmitting an RRC connection reconfiguration to a short TTI terminal according to an embodiment of the present invention.
  • a new system information transmission method can be introduced to improve the transmission efficiency of system information.
  • a more reasonable solution is to divide the system information into two categories, one is the system information that the terminal needs to obtain before the initial access, and the other is that the terminal can access the RRC dedicated message or the on-demand multicast after the terminal accesses. The way the system information is sent to the terminal for specific services.
  • An embodiment of the present invention provides an information sending method, which is applied to a base station, and includes:
  • the system information supporting the specific service of the terminal is sent to the terminal supporting the specific service.
  • Scheme 1 as shown in Figure 2, includes the following steps:
  • a CRC (Cyclic Redundancy Check) part and a physical downlink shared channel in a physical downlink control channel (PDCCH) are used in a predetermined RNTI (Radio Network Tempory Identity).
  • RNTI Radio Network Tempory Identity
  • PDSCH Physical Downlink Shared Channel
  • Step 102 Send the scrambled physical downlink control channel and the physical downlink shared channel to a terminal supporting the specific service.
  • the RRC (Radio Resource Control) connection message is used to send system information of the specific service to a terminal supporting a specific service, where the system information includes a set of discontinuities for determining the system information update.
  • a related parameter of the subframe includes one or more of the following: a discontinuous reception period, an offset of the starting subframe in the system frame in the discontinuous period, and a physical downlink control channel to be detected starting from the starting subframe The number of subframes.
  • the specific service may include a short TTI communication service, a D2D service, and the like.
  • the CRC part and the physical downlink shared channel in the physical downlink control channel are scrambled by using the predetermined RNTI, and the system is carried by the scrambled physical downlink shared channel.
  • the predetermined RNTI is different when the information is used for different specific services.
  • Transmitting the scrambled physical downlink control channel and the physical downlink shared channel to a group of terminals supporting the specific service includes: when the base station sends the updated system information of the specific service, the scrambled
  • the physical downlink control channel and the physical downlink shared channel are transmitted on one or more of a set of non-contiguous subframes.
  • the set of discontinuous subframes is determined by at least one of the following parameters: a discontinuous reception period, an offset of the starting subframe in the system frame in the discontinuous period, and a physical downlink to be detected starting from the starting subframe.
  • the number of subframes of the control channel is determined by at least one of the following parameters: a discontinuous reception period, an offset of the starting subframe in the system frame in the discontinuous period, and a physical downlink to be detected starting from the starting subframe.
  • the parameters for determining the set of discontinuous subframes are sent by the base station to all terminals through the system broadcast message before being sent to the terminal or the terminal to access the network through the RRC dedicated message.
  • the specific service is a short TTI communication service
  • the system information is public radio resource configuration information
  • the scrambling of the CRC part and the physical downlink shared channel in the physical downlink control channel by using a predetermined RNTI includes: adopting a group RNTI And scrambling the CRC part and the PDSCH in the PDCCH, where the scrambled PDSCH channel carries common radio resource configuration information that supports short TTI communication, where the short TTI length is less than 1 ms, and the group RNTI is one The group supports the short TTI terminal sharing.
  • the public radio resource configuration information supporting the short TTI communication includes one or more of the following: a downlink related channel available bandwidth, an uplink related channel available bandwidth, a PDCCH located in a short TTI, or an EPDCCH located in a short TTI.
  • a downlink related channel available bandwidth an uplink related channel available bandwidth
  • a PDCCH located in a short TTI or an EPDCCH located in a short TTI.
  • PHICH Physical Hybrid-ARQ Indicator Channel
  • Common configuration information common configuration information for SRS (Sounding Reference Signal) of short TTI, and uplink power control common configuration information.
  • the downlink associated channel available bandwidth is one or more sets of PRB pairs
  • the uplink related channel available bandwidth is one or more sets of PRB pairs
  • the set of PRB pairs includes one or more PRB pairs.
  • the public radio resource configuration information that the scrambled PDSCH channel carries short TTI communication includes:
  • the predetermined RRC message sent by the PDSCH carries the public radio resource configuration information supporting the short TTI communication, and the predetermined RRC message is not a system information message for broadcasting.
  • Transmitting the scrambled PDCCH and the PDSCH to the terminal supporting the short TTI includes:
  • the scrambled PDSCH is transmitted by quadrature phase shift keying QPSK modulation.
  • the scrambled PDSCH channel carries common radio resource configuration information that supports short TTI communication, including:
  • the common radio resource configuration information supporting the short TTI communication is transmitted through a system information block different from the system information block SIB2, and the public radio resource configuration information supporting the short TTI communication is transmitted in the broadcast system information message.
  • a number of SIBs can be included in the system information message, of which SIB2 is one of them.
  • the embodiment of the present invention adopts adding a new SIB instead of transmitting these public radio resource configuration information in SIB2.
  • the system information of the specific service is sent to the terminal supporting a specific service by using the radio resource control RRC connection message, including: the base station supports the short transmission time interval.
  • the TTI terminal sends public radio resource configuration information that supports short TTI communication, where the short TTI length is less than 1 ms, and the common radio resource configuration information supporting the short TTI communication includes one or more of the following: a downlink related channel is available.
  • the terminal when the base station can transmit the radio common resource configuration information supporting the short TTI communication for each terminal supporting the short TTI in each subframe, the terminal detects whether there is a corresponding STTI-RNTI scrambled PDCCH channel transmission in each subframe.
  • the terminal since some of the common resource configuration information that needs to be changed rapidly does not need to be changed in each subframe, the terminal may use discontinuous reception to reduce the detection of the PDCCH channel scrambled by the STTI-RNTI, that is, only in a specific one. Whether or not the channel transmission is periodically detected on a plurality of consecutive subframes, thereby reducing power consumption of the terminal.
  • the base station may also repeatedly transmit related radio common resource configuration information supporting short TTI communication in a plurality of consecutive subframes so that the information is correctly received.
  • the terminal in order to be able to identify from which subframe the base station can start transmitting the STTI-RNTI scrambled PDCCH channel, the terminal also needs to know the offset position of the start subframe of the discontinuous reception period in the system frame.
  • the terminal RNTI STTI-RNTI different from the SI-RNTI or the system information block that introduces a new different SIB2 in the system information message may be used to support the short TTI terminal.
  • the broadcast transmits relevant common control information for short TTI communication.
  • the public radio resource configuration information based on the 1ms TTI communication is sent in the SIB2. If the public radio resource configuration information that does not need to be changed frequently for supporting the short TTI communication is also sent in the SIB2, the related information is The original information in SIB2 has the same The transmission period has a lower priority for the public radio resource configuration information supporting short TTI communication, and does not need to have the same repetition period as the message in the existing SIB2, so the related information is separately sent in one SIB, and has more More flexibility.
  • the public radio resource configuration information for supporting short TTI communication since it is not necessary information for the terminal to access the LTE system, it may not be sent in the system information message to avoid repeated transmission of the system broadcast.
  • the relevant configuration information is sent to the terminal in the message.
  • the embodiment of the present invention further provides an information receiving method, which is applied to a terminal that supports a short transmission time interval TTI, and includes:
  • Scheme 1 as shown in Figure 3, includes the following steps:
  • Step 201 Perform a detection on a physical downlink control channel common search space by using a predetermined radio network temporary identifier RNTI, and receive the physical indicated by the physical downlink control channel when detecting the physical downlink control channel scrambled by the predetermined RNTI.
  • a downlink shared channel wherein the physical downlink shared channel is scrambled by the predetermined RNTI;
  • Step 202 Obtain system information of a specific service by using the physical downlink shared channel.
  • Solution 2 Receive system information of a specific service that is sent by the base station by using a radio resource control RRC connection message, where the system information includes related parameters of a set of discontinuous subframes for determining the system information update, where the related parameters include the following one Or multiple: a discontinuous reception period, an offset of the starting subframe within the system frame in the discontinuous period, and a number of subframes of the physical downlink control channel to be detected starting from the starting subframe.
  • the predetermined RNTI is different.
  • the detection of the public search space of the physical downlink control channel by using the predetermined radio network temporary identifier RNTI includes:
  • the system information of the specific service is detected on a set of non-contiguous subframes using a predetermined RNTI.
  • the set of discontinuous subframes is determined by at least one or more of the following parameters: a discontinuous reception period, an offset of the starting subframe within the system frame in the discontinuous period, and a PDCCH to be detected starting from the starting subframe.
  • the number of subframes is determined by at least one or more of the following parameters: a discontinuous reception period, an offset of the starting subframe within the system frame in the discontinuous period, and a PDCCH to be detected starting from the starting subframe.
  • Parameters for determining the set of discrete subframes are received by an RRC dedicated message or by a system broadcast message.
  • the public radio resource configuration information supporting the short transmission time interval TTI communication is obtained by using the PDSCH channel, and the short TTI length is less than 1 ms.
  • the system information for a specific service that is sent by the receiving base station by using the radio resource control RRC connection message includes: the terminal supporting the short transmission time interval TTI receives the common radio resource configuration information for supporting the short TTI communication,
  • the short TTI length is less than 1 ms.
  • the common radio resource configuration information supporting the short TTI communication in the first scheme and the second scheme includes one or more of the following: a downlink related channel available bandwidth, an uplink related channel available bandwidth, and a downlink related channel available bandwidth.
  • the downlink associated channel available bandwidth is one or more sets of PRB pairs
  • the uplink related channel available bandwidth is one or more sets of PRB pairs
  • the set of PRB pairs includes one or more PRB pairs.
  • the method described in the first scheme further includes:
  • an embodiment of the present invention further provides an information sending apparatus, including:
  • the scrambling module 31 is configured to scramble the cyclic redundancy code CRC part and the physical downlink shared channel in the physical downlink control channel by using a predetermined radio network temporary identifier RNTI, where the scrambled physical downlink shared channel carries System information for a specific business;
  • the first communication module 32 is configured to send the scrambled physical downlink control channel and the physical downlink shared channel to a terminal supporting the specific service.
  • the specific service includes at least one of a short TTI communication service and a D2D service.
  • the predetermined RNTI is different when the system information carried by the scrambled physical downlink shared channel is used for different specific services.
  • the first communication module 32 is configured to: when transmitting the updated system information of the specific service, one or more of the scrambled physical downlink control channel and the physical downlink shared channel in a set of discontinuous subframes Transmitted on subframes, the set of non-contiguous subframes is determined by at least one or more of the following parameters: a discontinuous reception period, an offset of the starting subframe within the system frame in the discontinuous period, and a starting subframe Start the number of subframes of the physical downlink control channel to be detected.
  • the first communication module 32 is further configured to: after the parameter for determining the set of discontinuous subframes is sent to the terminal or the terminal accessing the network by using an RRC dedicated message, the system broadcast message is used to determine the one.
  • the parameters of the group of discontinuous subframes are sent to all terminals.
  • the scrambling module 31 is configured to: scramble the CRC part in the PDCCH and the PDSCH by using a group RNTI, where the scrambled PDSCH channel carries public radio resource configuration information that supports short TTI communication, where The short TTI length is less than 1 ms, and the group RNTI is shared by a group of the terminals supporting the short TTI.
  • the first communication module 32 is configured to:
  • the scrambled PDSCH is transmitted by quadrature phase shift keying QPSK modulation.
  • the first communication module 32 is configured to: send the common radio resource configuration information supporting the short TTI communication by using a system information block different from the system information block SIB2, where the public radio resource configuration information supporting the short TTI communication is broadcasted Sent in the system information message.
  • the embodiment of the present invention further provides an information sending apparatus, which is disposed at a base station, and includes:
  • a second communication module configured to send system information of the specific service to a terminal supporting a specific service by using a radio resource control RRC connection message, where the system information includes a set of discontinuous subframes for determining update of the system information
  • the related parameters include one or more of the following: a discontinuous reception period, an offset of the starting subframe in the system frame in the discontinuous period, and a child to be detected from the starting subframe to detect the physical downlink control channel The number of frames.
  • an embodiment of the present invention further provides an information receiving apparatus, which is configured to support a terminal of a specific service, including:
  • the detecting module 41 is configured to perform detection on a physical downlink control channel common search space by using a predetermined radio network temporary identifier RNTI;
  • the first receiving module 42 is configured to receive, when detecting the physical downlink control channel that is scrambled by using the predetermined RNTI, a physical downlink shared channel indicated by the physical downlink control channel, where the physical downlink shared channel is Describe the predetermined RNTI scrambling;
  • the configuration module 43 is configured to obtain system information of a specific service by using the physical downlink shared channel.
  • the predetermined RNTI is different when the system information carried by the scrambled physical downlink shared channel is used for different specific services.
  • the detecting module 41 is configured to:
  • the system information of the specific service is detected on a set of non-contiguous subframes using a predetermined RNTI.
  • the first receiving module 42 is further configured to receive a parameter for determining the set of discontinuous subframes by using an RRC dedicated message or by a system broadcast message.
  • the configuration module 43 is configured to: obtain common radio resource configuration information that supports short transmission time interval TTI communication by using the PDSCH channel, where the short TTI length is less than 1 ms, and the public radio resource configuration information supporting the short TTI communication includes the following: One or more of the following: downlink related channel available bandwidth, uplink related channel available bandwidth, PDCCH in short TTI or EPDCCH common configuration information in short TTI, PHICH related common configuration information in short TTI PUCCH common configuration information in a short TTI, located in a short TTI.
  • the device may further include:
  • the data channel processing module is configured to demodulate the PDSCH data channel located in the short TTI or transmit the PUSCH data channel located in the short TTI according to the common radio resource configuration information and the dedicated control information carried on the PDCCH located in the short TTI.
  • An embodiment of the present invention further provides an information receiving apparatus, which is configured to support a terminal of a specific service, and includes:
  • a second receiving module configured to receive system information of a specific service sent by the base station by using a radio resource control RRC connection message, where the system information includes related parameters of a set of discontinuous subframes for determining the system information update, where the correlation
  • the parameter includes one or more of the following: a discontinuous reception period, an offset of the starting subframe within the system frame in the discontinuous period, and a number of subframes of the physical downlink control channel to be detected starting from the starting subframe.
  • the channel allocation for the downlink sPDSCH channel and the uplink sPUSCH is performed by using four sets of PRB pairs.
  • the PDCCH channel is not suitable for the related common resource configuration. Therefore, a new RRC message is introduced for transmitting these public radio resource configuration information.
  • the new RRC message is sent on the PDSCH channel and scrambled with a scrambling code different from the SI-RNTI.
  • the STTI-RNTI is a group RNTI, and the set supports short TTI. Terminal sharing.
  • the base station determines whether to send the updated system information for D2D communication to the D2D-RNTI scrambled physical downlink shared channel to a group of D2D-capable terminals according to requirements.
  • the base station does not need to send system information for D2D communication for the D2D terminal.
  • the terminal supporting the D2D communication in the cell releases the wireless link, the base station does not need to send the system information for the D2D communication to the D2D terminal in the cell.
  • the D2D-RNTI which is a group RNTI, is shared by a group of terminals supporting D2D communication.
  • FIG. 6 is a schematic diagram showing a PDCCH and PDSCH channel transmission in which a terminal supporting short TTI detects whether there is STTI-RNTI scrambling in a specific subframe.
  • the discontinuous reception period of the terminal in FIG. 6 is 10 subframes, and 3 subframes need to detect whether there is a PDCCH control channel with STTI-RNTI scrambling, and the offset of the initial subframe in one system frame is 0.
  • the terminal needs to detect whether the base station scrambles the PDCCH and the PDSCH by using the STTI-RNTI on the subframes, and transmits the common radio resource configuration information.
  • each of the discontinuous reception periods in FIG. 6 has 3 subframes, and the base station can decide whether to repeatedly transmit the RRC message carrying the common resource configuration by using STTI-RNTI scrambling as needed.
  • FIG. 7 is a schematic diagram showing another PDCCH and PDSCH channel transmission in which a terminal supporting short TTI detects STTI-RNTI scrambling in a specific subframe.
  • the discontinuous reception period of the terminal in FIG. 7 is 20 subframes, and 4 subframes need to detect whether there is a STTI-RNTI scrambled PDCCH control channel, and the offset of the initial subframe in one system frame is 2.
  • the terminal needs to detect whether the base station scrambles the PDCCH and the PDSCH by using the STTI-RNTI on the subframes, and transmits the common radio resource configuration information.
  • the terminal needs to perform related detection on the subframes k+20, k+21, k+22 and k+23. For other positions given in the figure, the terminal does not need to detect whether there is STTI-RNTI scrambling.
  • the PDCCH control channel is used to reduce power consumption.
  • the base station may decide whether to repeatedly transmit the RRC message carrying the common resource configuration by STTI-RNTI scrambling on the 4 subframes in S1.
  • the PDCCH channel uses DCI format 1C or 1A for transmitting control information of the corresponding PDSCH channel, and the PDSCH channel is modulated by QPSK mode for data. send.
  • the DCI format 1C does not directly carry the RV (Redundancy Version) information for repeated transmission.
  • the RV information is implicitly determined by the subframe number, and the DCI format 1A carries the RV information for repeated transmission.
  • the related public radio resource configuration information supported by the terminal according to the STTI-RNTI scrambled PDSCH channel and supporting the short TTI communication and the sPDCCH transmitted in the short TTI The dedicated control information carried on is used to demodulate the short sPDSCH data channel or to transmit and transmit the sPUCCH data channel.
  • Whether or not the four consecutive subframes on S1 or S2 in FIG. 7 transmit the relevant common radio resource configuration information for supporting the short TTI communication to the terminal of the short TTI is also determined by the base station.
  • the base station does need to re-adjust the relevant public radio resource configuration information for the short TTI communication according to the terminal access situation and the radio resource utilization situation in the system. If the adjustment is required, the related configuration information is sent in S1 or S2, if not required. Adjustment, the base station may not send relevant configuration information.
  • the terminal supporting the short TTI detects the PDCCH with the STTI-RNTI scrambling on the subframes in S1 and S2. If not detected, the terminal will still use the original radio common resource configuration information. If the terminal detects the corresponding PDCCH, The terminal will store the new common radio resource configuration information and use it for sPDSCH data channel demodulation.
  • the base station in FIG. 8 sends an RRC connection reconfiguration to a terminal supporting a short TTI, where the reconfiguration message includes related public radio resource configuration information supporting short TTI communication, where multiple sets of PRB pairs available for the sPDSCH channel, and sPUSCH channels are available.
  • a set of control parameters for the terminal to discontinuously receive related public radio resource configuration information supporting short TTI communication further includes a discontinuous reception period, and the offset of the starting subframe in a system frame in the discontinuous period, The starting subframe needs to detect the number of subframes of the relevant PDCCH.
  • the relevant public radio resource configuration information supporting short TTI communication is similar to the public radio resource configuration information for the 1 ms TTI communication in the current SIB2, but some changes are made for the physical channel situation of the short TTI communication, and the control for discontinuous reception is performed.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed by the processor.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented by the processor to implement the above information receiving method.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function.
  • Embodiments of the invention are not limited to any specific form of combination of hardware and software.
  • the base station can send corresponding system information update to a group of terminals supporting a specific service as needed, thereby avoiding terminal power consumption caused by system information update in the LTE network, after the terminal accesses the network.
  • Sending system information of a specific service also avoids continuously transmitting system information of various specific services in the LTE network, reducing the waste of radio resources and energy consumption of the base station, and improving the transmission efficiency of system information.
  • the embodiment of the present invention can better support the different bandwidth requirements of the short TTI terminal, and avoid sending different slow DCIs for multiple sets of PRB pairs simultaneously in one subframe, and can also avoid
  • the downlink DCI is sent to the downlink and the uplink respectively.
  • the common resource allocation information is sent on the PDSCH.
  • the existing DCI format in the standard can be used to avoid introducing a new DCI format in the PDCCH.

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Abstract

本文公布一种信息发送方法、接收方法和装置，所述信息发送方法包括：采用预定的无线网络临时标识RNTI对物理下行控制信道中的循环冗余码CRC部分和物理下行共享信道进行加扰；其中，所述加扰后的物理下行共享信道携带特定业务的系统信息；将加扰后的所述物理下行控制信道和所述物理下行共享信道发送给支持所述特定业务的终端。

Description

一种信息发送方法、接收方法和装置 技术领域
本申请涉及但不限于LTE(Long Term Evolution，长期演进)以及NR(New Radio，新空口)移动通信网络领域，尤指一种信息发送方法、接收方法和装置。
背景技术
LTE移动通信网络从3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)立项研究至今，都是采用1ms的子帧进行数据传输。随着新的对时延有更高要求应用的出现，如虚拟现实、实时云计算等，对LTE网络也提出了新的要求，如减少空口传输时延。因此，需要针对空口传输研究立项。在3GPP RAN#67会议中，通过了关于减少空口传输时延的研究项。在该研究项中指出，需要评估不同传输时间间隔(TTI，Transmission Time Interval)长度带来的性能增益，包括TTI长度为1个OFDM(Orthogonal Frequency Division Multiplexing，正交频分复用)符号，2个OFDM符号，3个OFDM符号，4个OFDM符号以及7个OFDM符号。随着TTI长度的变短，如果还是按照之前的方式设计DCI(downlink control information，下行控制信息)，将带来控制信道开销比较大的问题。
在下行和上行引入两级DCI，即slow DCI和fast DCI，用于减少短TTI内控制信道的开销。对于支持短TTI的终端，在子帧内采用一组或多组PRB(Physical Resource Block，物理资源块)对的方式进行公共资源分配，每组PRB对包括一个或多个PRB对，如图1所示，给出了2组PRB对的示意图，其中一组PRB对中只有1个PRB对，另外一组PRB对中有3个PRB对。对于一组PRB对，在一个短TTI内只能一个终端使用，一个子帧内的不同的短TTI之间，不同的终端可以使用相同的一组PRB对。通过这种方式，使用同一组PRB对的终端，其在一个子帧内资源分配的信息是相同的，可以放在slow DCI中传输，而在fast DCI中只需要传输相关资源分配索引。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
在LTE系统中，只是少数的系统信息是终端接入必须的，而其他大量的系统信息都与特定的业务相关。由于这些针对特定业务的系统信息也是由SI-RNTI(用于标识SIB(系统信息块)消息的无线网络临时标识)加扰的PDSCH(物理下行共享信道)信道在不停的周期性发送，当小区中没有相关业务的终端时，这将造成系统资源浪费和较低的能耗，比如SIB18/19是针对D2D(Device-to-Device，设备到设备)业务的系统信息，当小区中没有相关终端时，发送相关的SIB是没有必要的，将带来能量的消耗，又例如，当针对短TTI终端引入新的SIB信元时，当小区中没有短TTI终端，也将带来系统资源和能量的消耗。此外，当小区中终端已经读取了自己需要的特定业务系统信息之后，如果仍然周期性发送，也是给系统资源和能耗造成不必要的浪费。
本发明实施例提供一种信息发送方法、接收方法和装置，可以提高LTE网络系统信息发送效率。
本发明实施例采取的技术方案如下：
本发明实施例提供一种信息发送方法，包括：
采用预定的无线网络临时标识RNTI对物理下行控制信道中的循环冗余码CRC部分和物理下行共享信道进行加扰；其中，所述加扰后的物理下行共享信道携带特定业务的系统信息；
将加扰后的所述物理下行控制信道和所述物理下行共享信道发送给支持所述特定业务的终端。
在一实施方式中，所述特定业务包括短传输时间间隔TTI通信业务、设备到设备D2D业务中的至少一种；
所述采用预定的RNTI对物理下行控制信道中的CRC部分和物理下行共享信道进行加扰包括：
所述系统信息用于不同的特定业务时，所述预定的RNTI不同。
在一实施方式中，所述将加扰后的所述物理下行控制信道和所述物理下行共享信道发送给支持所述特定业务的终端包括：
当基站发送更新的所述特定业务的系统信息时，将加扰后的物理下行控制信道和物理下行共享信道在一组不连续的子帧中的一个或多个子帧上发送。
在一实施方式中，所述一组不连续的子帧至少由以下一个或多个参数确定：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
在一实施方式中，还包括：基站通过无线资源控制RRC专用消息将用于确定所述一组不连续的子帧的参数发送给终端或终端接入网络之前由基站通过系统广播消息将用于确定所述一组不连续的子帧的参数发送给所有终端。
在一实施方式中，所述特定业务为短传输时间间隔TTI通信业务，所述系统信息为公共无线资源配置信息，所述采用预定的RNTI对物理下行控制信道中的CRC部分和物理下行共享信道进行加扰包括：
采用一个组RNTI对所述物理下行控制信道中的CRC部分和所述物理下行共享信道进行加扰，所述加扰后的物理下行共享信道携带支持短TTI通信的公共无线资源配置信息，所述组RNTI由一组所述支持短TTI的终端共用。
在一实施方式中，所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的物理下行控制信道或位于短TTI中的增强物理下行控制信道公共配置信息，位于短TTI中的物理混合自动重传指示信道相关公共配置信息，位于短TTI中的物理上行控制信道公共配置信息，位于短TTI中的物理下行共享信道公共配置信息，位于短TTI中的物理上行共享信道公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
在一实施方式中，所述下行链路相关信道可用带宽是一组或多组物理资源块PRB对，所述上行链路相关信道可用带宽是一组或多组PRB对，所述一组PRB对包括一个或多个PRB对。
本发明实施例还提供一种信息发送方法，包括：
通过无线资源控制RRC连接消息向支持一种特定业务的终端发送所述特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
在一实施方式中，所述特定业务为短传输时间间隔TTI通信业务，所述系统信息为公共无线资源配置信息，所述通过无线资源控制RRC连接消息向支持一种特定业务的终端发送所述特定业务的系统信息包括：
基站向支持短传输时间间隔TTI的终端发送支持短TTI通信的公共无线资源配置信息，所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的物理下行控制信道或位于短TTI中的增强物理下行控制信道公共配置信息，位于短TTI中的物理混合自动重传指示信道公共配置信息，位于短TTI中的物理上行控制信道公共配置信息，位于短TTI中的物理下行共享信道公共配置信息，位于短TTI中的物理上行共享信道公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
在一实施方式中，所述下行链路相关信道可用带宽是一组或多组物理资源块PRB对，所述上行链路相关信道可用带宽是一组或多组PRB对，所述一组PRB对包括一个或多个PRB对。
本发明实施例还提供一种信息接收方法，包括：
采用预定的无线网络临时标识RNTI在物理下行控制信道公共搜索空间进行检测，当检测到采用所述预定的RNTI加扰的物理下行控制信道时，接收所述物理下行控制信道指示的物理下行共享信道；其中，所述物理下行共 享信道被所述预定的RNTI加扰；
利用所述物理下行共享信道获得特定业务的系统信息。
在一实施方式中，所述加扰后的物理下行共享信道携带的系统信息用于不同的特定业务时，所述预定的RNTI不同。
在一实施方式中，采用预定的RNTI在物理下行控制信道公共搜索空间进行检测包括：
采用预定的RNTI在一组不连续的子帧上对所述特定业务的系统信息进行检测。
在一实施方式中，所述一组不连续的子帧至少由以下一个或多个参数确定：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测PDCCH的子帧数。
在一实施方式中，通过RRC专用消息或通过系统广播消息接收用于确定所述一组不连续子帧的参数。
在一实施方式中，所述特定业务为短传输时间间隔TTI通信业务，所述系统信息为公共无线资源配置信息，所述利用所述物理下行共享信道获得特定业务的系统信息包括：利用所述物理下行共享信道获得支持短传输时间间隔TTI通信的公共无线资源配置信息，所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的物理下行控制信道或位于短TTI中的增强物理下行控制信道公共配置信息，位于短TTI中的物理混合自动重传指示信道相关公共配置信息，位于短TTI中的物理上行控制信道公共配置信息，位于短TTI中的物理下行共享信道公共配置信息，位于短TTI中的物理上行共享信道公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
在一实施方式中，所述下行链路相关信道可用带宽是一组或多组PRB对，所述上行链路相关信道可用带宽是一组或多组PRB对，所述一组PRB对包括一个或多个PRB对。
在一实施方式中，根据所述公共无线资源配置信息和位于短TTI中的物 理下行控制信道上承载的专用控制信息，解调位于短TTI中的物理下行共享信道或发送位于短TTI中的物理上行共享信道。
本发明实施例还提供一种信息接收方法，包括：
接收基站通过无线资源控制RRC连接消息发送的特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
在一实施方式中，接收基站通过无线资源控制RRC连接消息发送的特定业务的系统信息包括：支持短传输时间间隔TTI的终端接收用于支持短TTI通信的公共无线资源配置信息，所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的物理下行控制信道或位于短TTI中的增强物理下行控制信道公共配置信息，位于短TTI中的物理混合自动重传指示信道相关公共配置信息，位于短TTI中的物理上行控制信道公共配置信息，位于短TTI中的物理下行共享信道公共配置信息，位于短TTI中的物理上行共享信道公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
在一实施方式中，所述下行链路相关信道可用带宽是一组或多组物理资源块PRB对，所述上行链路相关信道可用带宽是一组或多组PRB对，所述一组PRB对包括一个或多个PRB对。
本发明实施例还提供一种信息发送装置，包括：
加扰模块，设置为采用预定的无线网络临时标识RNTI对物理下行控制信道中的循环冗余码CRC部分和物理下行共享信道进行加扰；其中，所述加扰后的物理下行共享信道携带特定业务的系统信息；
第一通信模块，设置为将加扰后的所述物理下行控制信道和所述物理下行共享信道发送给支持所述特定业务的终端。
在一实施方式中，所述特定业务包括短传输时间间隔TTI通信业务、设 备到设备D2D业务中的至少一种；
所述系统信息用于不同的特定业务时，所述预定的无线网络临时标识RNTI不同。
在一实施方式中，所述第一通信模块设置为：当发送更新的所述特定业务的系统信息时，将加扰后的物理下行控制信道和物理下行共享信道在一组不连续的子帧中的一个或多个子帧上发送，所述一组不连续的子帧至少由以下一个或多个参数确定：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
在一实施方式中，所述第一通信模块还设置为：通过RRC专用消息将用于确定所述一组不连续的子帧的参数发送给终端或终端接入网络之前通过系统广播消息将用于确定所述一组不连续的子帧的参数发送给所有终端。
在一实施方式中，所述特定业务为短传输时间间隔TTI通信业务，所述系统信息为公共无线资源配置信息，所述加扰模块设置为：采用一个组RNTI对所述物理下行控制信道中的CRC部分和所述物理下行共享信道进行加扰，所述加扰后的物理下行共享信道携带支持短传输时间间隔TTI通信的公共无线资源配置信息，所述组RNTI由一组所述支持短TTI的终端共用。
在一实施方式中，所述第一通信模块设置为：
采用下行控制信息模式DCI format 1C或者DCI format 1A发送加扰后的所述物理下行控制信道；
采用正交相移键控QPSK调制方式发送加扰后的所物理下行共享信道。
本发明实施例还提供一种信息发送装置，包括：
第二通信模块，设置为通过无线资源控制RRC连接消息向支持一种特定业务的终端发送所述特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
本发明实施例还提供一种信息接收装置，包括：
检测模块，设置为采用预定的无线网络临时标识RNTI在物理下行控制 信道公共搜索空间进行检测；
第一接收模块，设置为当检测到采用所述预定的RNTI加扰的物理下行控制信道时，接收所述物理下行控制信道指示的物理下行共享信道；其中，所述物理下行共享信道被所述预定的RNTI加扰；
配置模块，设置为利用所述物理下行共享信道获得特定业务的系统信息。
在一实施方式中，所述加扰后的物理下行共享信道携带的系统信息用于不同的特定业务时，所预定的RNTI不同。
在一实施方式中，所述检测模块设置为：
采用预定的RNTI在一组不连续的子帧上对所述特定业务的系统信息进行检测。
在一实施方式中，所述第一接收模块，还设置为通过RRC专用消息或通过系统广播消息接收用于确定所述一组不连续子帧的参数。
在一实施方式中，所述特定业务为短传输时间间隔TTI通信业务，所述系统信息为公共无线资源配置信息，所述配置模块设置为：利用所述物理下行共享信道获得支持短传输时间间隔TTI通信的公共无线资源配置信息，所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的物理下行控制信道或位于短TTI中的增强物理下行控制信道公共配置信息，位于短TTI中的物理混合自动重传指示信道相关公共配置信息，位于短TTI中的物理上行控制信道公共配置信息，位于短TTI中的物理下行共享信道公共配置信息，位于短TTI中的物理上行共享信道公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
在一实施方式中，还包括：
数据信道处理模块，设置为根据所述公共无线资源配置信息和位于短TTI中的物理下行控制信道上承载的专用控制信息，解调位于短TTI中的物理下行共享信道或发送位于短TTI中的物理上行共享信道。
本发明实施例还提供一种信息接收装置，包括：
第二接收模块，设置为接收基站通过无线资源控制RRC连接消息发送的特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述信息发送方法。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述信息接收方法。
本发明实施例中，基站可以根据需要向支持特定业务的终端发送相应的系统信息更新，避免了LTE网络中系统信息更新时带来的终端功率消耗问题，通过在终端接入网络之后才发送特定业务的系统信息，也避免了LTE网络中不停地周期性发送各种特定业务的系统信息，减少了基站无线资源和能耗浪费，提高了系统信息的发送效率。
此外，针对支持短TTI通信的业务，本发明实施例也可以更好的支持短TTI终端对带宽的不同需求，避免在一个子帧内同时发送针对多组PRB对的不同slow DCI，也可以避免分别对下行和上行发送slow DCI，此外，将公共资源分配信息放在PDSCH上发送，可以利用标准中已有的DCI格式，避免在PDCCH中引入新的DCI格式。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为一组或多组PRB对的示意图；
图2为本发明实施例的一种信息发送方法的流程图；
图3为本发明实施例的一种信息接收方法的流程图；
图4为本发明实施例的一种信息发送装置的结构示意图；
图5为本发明实施例的一种信息接收装置的结构示意图；
图6为本发明实施例的支持短TTI的终端在一组不连续子帧上检测STTI-RNTI加扰的PDCCH信道的示意图；
图7为本发明实施例的支持短TTI的终端在一组不连续子帧上检测STTI-RNTI加扰的PDCCH信道的示意图。
图8为本发明实施例的基站给支持短TTI终端发送RRC连接重配的示意图。
详述
下面结合附图对本发明的实施例进行说明，需要说明的是，在不冲突的情况下，本申请中的实施例和实施例中的特征可以相互任意组合。
在5G NR新空口移动通信系统中，可以引入新的系统信息发送方法以提高系统信息的发送效率。比较合理的解决方案是将系统信息分成两类，一类是终端在初始接入前，需要获取到的系统信息，一类是终端在接入后，基站可以通过RRC专用消息或者按需组播的方式发送给终端的针对特定业务的系统信息。
本发明实施例提供一种信息发送方法，应用于基站，包括：
将终端支持一种特定业务的系统信息发送给支持所述特定业务的终端。
本发明实施例的发送包括两种方式：
方案一、如图2所示，包括如下步骤：
步骤101，采用预定的RNTI(Radio Network Tempory Identity，无线网络临时标识)对物理下行控制信道(Physical Downlink Control Channel，PDCCH)中的CRC(Cyclic Redundancy Check，循环冗余码)部分和物理下行共享信道(Physical Downlink Shared Channel，PDSCH)进行加扰；其中，所述加扰后的物理下行共享信道携带特定业务的系统信息；
步骤102，将加扰后的所述物理下行控制信道和所述物理下行共享信道发送给支持所述特定业务的终端。
方案二、通过RRC(Radio Resource Control，无线资源控制)连接消息向支持一种特定业务的终端发送所述特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
其中，所述特定业务可包括短TTI通信业务、D2D业务等。
对于方案一，发送所述公共无线资源配置信息时，采用预定的RNTI对物理下行控制信道中的CRC部分和物理下行共享信道进行加扰包括：所述加扰后的物理下行共享信道携带的系统信息用于不同的特定业务时，所述预定的RNTI不同。
将加扰后的所述物理下行控制信道和所述物理下行共享信道发送给一组支持所述特定业务的终端包括：当基站发送更新的所述特定业务的系统信息时，将加扰后的物理下行控制信道和物理下行共享信道在一组不连续的子帧中的一个或多个子帧上发送。所述一组不连续的子帧至少由以下一个或多个参数确定：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
用于确定所述一组不连续的子帧的参数由基站通过RRC专用消息发送给终端或终端接入网络之前由基站通过系统广播消息发送给所有终端。
所述特定业务为短TTI通信业务，所述系统信息为公共无线资源配置信息，所述采用预定的RNTI对物理下行控制信道中的CRC部分和物理下行共享信道进行加扰包括：采用一个组RNTI对所述PDCCH中的CRC部分和所述PDSCH进行加扰，所述加扰后的PDSCH信道携带支持短TTI通信的公共无线资源配置信息，所述短TTI长度小于1ms，所述组RNTI由一组所述支持短TTI的终端共用。
所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的PDCCH或位于短TTI中的EPDCCH(Enhanced Physical Downlink Control Channel，增强物理下行控制信道)公共配置信息，位于短TTI中的PHICH(Physical Hybrid-ARQ Indicator Channel，物理混合自动重传指示信道)相 关公共配置信息，位于短TTI中的PUCCH(Physical Uplink Control Channel，物理上行控制信道)公共配置信息，位于短TTI中的PDSCH公共配置信息，位于短TTI中的PUSCH(Physical Uplink Shared Channel,物理上行共享信道)公共配置信息，针对短TTI的SRS(Sounding Reference Signal，信道探测参考信号)公共配置信息，上行功率控制公共配置信息。
所述下行链路相关信道可用带宽是一组或多组PRB对，所述上行链路相关信道可用带宽是一组或多组PRB对，所述一组PRB对包括一个或多个PRB对。
当所述组RNTI为非用于系统广播信息发送的SI-RNTI时，所述加扰后的PDSCH信道携带支持短TTI通信的公共无线资源配置信息包括：
通过所述PDSCH发送的预定RRC消息携带所述支持短TTI通信的公共无线资源配置信息，所述预定RRC消息不是进行广播的系统信息消息(System Information Message)。
将加扰后的所述PDCCH和所述PDSCH发送给所述支持短TTI的终端包括：
采用下行控制信息模式DCI format 1C或者DCI format 1A发送加扰后的所述PDCCH；
采用正交相移键控QPSK调制方式发送加扰后的所PDSCH。
当所述组RNTI为用于系统广播信息发送的SI-RNTI时，所述加扰后的PDSCH信道携带支持短TTI通信的公共无线资源配置信息包括：
通过不同于系统信息块SIB2的系统信息块发送所述支持短TTI通信的公共无线资源配置信息，所述支持短TTI通信的公共无线资源配置信息在进行广播的系统信息消息中发送。
系统信息消息中可以包括很多SIB，其中SIB2是其中的一个。本发明实施例采用增加一个新的SIB，而不是在SIB2中发送这些公共无线资源配置信息。
当采用方式二时，通过无线资源控制RRC连接消息向支持一种特定业务的终端发送所述特定业务的系统信息包括：基站向支持短传输时间间隔 TTI的终端发送支持短TTI通信的公共无线资源配置信息，所述短TTI长度小于1ms，所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的PDCCH或位于短TTI中的EPDCCH公共配置信息，位于短TTI中的PHICH公共配置信息，位于短TTI中的PUCCH公共配置信息，位于短TTI中的PDSCH公共配置信息，位于短TTI中的PUSCH公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
对于方案一，当基站可以在每个子帧针对支持短TTI的终端发送支持短TTI通信的无线公共资源配置信息时，终端在每个子帧检测是否有相应的STTI-RNTI加扰的PDCCH信道发送。然而，由于部分需要快速变化的公共资源配置信息，也并不需要在每个子帧发生改变，因此终端可以采用不连续接收减少对STTI-RNTI加扰的PDCCH信道的检测，即只在特定的一个或多个连续子帧上周期性地检测是否有该信道发送，从而减少终端的电量消耗。基站也可以通过在多个连续子帧重复发送支持短TTI通信的相关无线公共资源配置信息，以便信息被正确的接收。此外，终端为了能够识别基站是从哪一个子帧可以开始发送STTI-RNTI加扰的PDCCH信道，还需要知道不连续接收周期的起始子帧在系统帧内的偏移位置。
对于部分公共资源配置信息，可能需要相对比较快速的更新，比如针对sPDSCH的下行链路可用带宽，针对sPUSCH以及sPUCCH的上行链路可用带宽，sPHICH部分相关公共配置信息等，而另外一些信息可能并不需要快速的动态改变，如针对短TTI通信的SRS相关公共配置信息，上行功率控制相关公共配置信息等。针对公共资源配置信息对更新速度的不同需求，可以采用不同于SI-RNTI的组RNTI STTI-RNTI或者基于在系统信息消息中引入新的不同SIB2的系统信息块的方式，向支持短TTI的终端广播发送用于短TTI通信的相关公共控制信息。
已有标准中，基于1ms TTI通信的公共无线资源配置信息在SIB2中发送，如果把针对支持短TTI通信的部分不需要经常改变的公共无线资源配置信息也放在SIB2中发送，则相关信息与原有的在SIB2中的信息有相同的 发送周期，而针对支持短TTI通信的公共无线资源配置信息有更低的优先级，不需要有与已有SIB2中消息一样的重复周期，因此将相关信息单独放在一个SIB中发送，具有更多的灵活性。
如果将需要相对比较快速更新的部分公共配置信息放在系统信息消息中发送，将带来小区内所有终端较为频繁的接收系统消息变更，给终端带来更大的电量消耗。因此，引入新的组RNTI，用于向支持短TTI终端发送这部分消息。
作为针对支持短TTI通信的公共无线资源配置信息，由于不是终端接入LTE系统必须的信息，因此，也可以不放在系统信息消息中发送，避免系统广播不停的重复发送。在对支持短TTI终端进行RRC连接重配时，在该消息中将相关配置信息发送给终端。
本发明实施例还提供一种信息接收方法，应用于支持短传输时间间隔TTI的终端，包括：
接收基站发送的特定业务的系统信息。
本发明实施例的接收包括两种方式：
方案一、如图3所示，包括如下步骤：
步骤201，采用预定的无线网络临时标识RNTI在物理下行控制信道公共搜索空间进行检测，当检测到采用所述预定的RNTI加扰的物理下行控制信道时，接收所述物理下行控制信道指示的物理下行共享信道；其中，所述物理下行共享信道被所述预定的RNTI加扰；
步骤202，利用所述物理下行共享信道获得特定业务的系统信息。
方案二、接收基站通过无线资源控制RRC连接消息发送的特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
对于方案一，所述加扰后的物理下行共享信道携带的系统信息用于不同的特定业务时，所述预定的RNTI不同。
采用预定的无线网络临时标识RNTI在物理下行控制信道公共搜索空间进行检测包括：
采用预定的RNTI在一组不连续的子帧上对所述特定业务的系统信息进行检测。
所述一组不连续的子帧至少由以下一个或多个参数确定：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测PDCCH的子帧数。
通过RRC专用消息或通过系统广播消息接收用于确定所述一组不连续子帧的参数。
对于方案一，利用所述PDSCH信道获得支持短传输时间间隔TTI通信的公共无线资源配置信息，所述短TTI长度小于1ms。
对于方案二，接收基站通过无线资源控制RRC连接消息发送的用于一种特定业务的系统信息包括：支持短传输时间间隔TTI的终端接收用于支持短TTI通信的公共无线资源配置信息，所述短TTI长度小于1ms。
方案一和方案二中所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的PDCCH或位于短TTI中的EPDCCH公共配置信息，位于短TTI中的PHICH相关公共配置信息，位于短TTI中的PUCCH公共配置信息，位于短TTI中的PDSCH公共配置信息，位于短TTI中的PUSCH公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
所述下行链路相关信道可用带宽是一组或多组PRB对，所述上行链路相关信道可用带宽是一组或多组PRB对，所述一组PRB对包括一个或多个PRB对。
方案一中所述方法还包括：
根据所述公共无线资源配置信息和位于短TTI中的PDCCH上承载的专用控制信息，解调位于短TTI中的PDSCH或发送位于短TTI中的PUSCH。
如图4所示，本发明实施例还提供一种信息发送装置，包括：
加扰模块31，设置为采用预定的无线网络临时标识RNTI对物理下行控制信道中的循环冗余码CRC部分和物理下行共享信道进行加扰；其中，所述加扰后的物理下行共享信道携带特定业务的系统信息；
第一通信模块32，设置为将加扰后的所述物理下行控制信道和所述物理下行共享信道发送给支持所述特定业务的终端。
所述特定业务包括短TTI通信业务、D2D业务中的至少一种。
所述加扰后的物理下行共享信道携带的系统信息用于不同的特定业务时，所述预定的RNTI不同。
所述第一通信模块32设置为：当发送更新的所述特定业务的系统信息时，将加扰后的物理下行控制信道和物理下行共享信道在一组不连续的子帧中的一个或多个子帧上发送，所述一组不连续的子帧至少由以下一个或多个参数确定：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
所述第一通信模块32还设置为：通过RRC专用消息将用于确定所述一组不连续的子帧的参数发送给终端或终端接入网络之前通过系统广播消息将用于确定所述一组不连续的子帧的参数发送给所有终端。
所述加扰模块31设置为：采用一个组RNTI对所述PDCCH中的CRC部分和所述PDSCH进行加扰，所述加扰后的PDSCH信道携带支持短TTI通信的公共无线资源配置信息，所述短TTI长度小于1ms，所述组RNTI由一组所述支持短TTI的终端共用。
所述第一通信模块32设置为：
采用下行控制信息模式DCI format 1C或者DCI format 1A发送加扰后的所述PDCCH；
采用正交相移键控QPSK调制方式发送加扰后的所述PDSCH。
所述第一通信模块32设置为：通过不同于系统信息块SIB2的系统信息块发送所述支持短TTI通信的公共无线资源配置信息，所述支持短TTI通信的公共无线资源配置信息在进行广播的系统信息消息中发送。
本发明实施例还提供一种信息发送装置，设置于基站，包括：
第二通信模块，设置为通过无线资源控制RRC连接消息向支持一种特定业务的终端发送所述特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
如图5所示，本发明实施例还提供一种信息接收装置，设置于支持一种特定业务的终端，包括：
检测模块41，设置为采用预定的无线网络临时标识RNTI在物理下行控制信道公共搜索空间进行检测；
第一接收模块42，设置为当检测到采用所述预定的RNTI加扰的物理下行控制信道时，接收所述物理下行控制信道指示的物理下行共享信道；其中，所述物理下行共享信道被所述预定的RNTI加扰；
配置模块43，设置为利用所述物理下行共享信道获得特定业务的系统信息。
所述加扰后的物理下行共享信道携带的系统信息用于不同的特定业务时，所述预定的RNTI不同。
所述检测模块41设置为：
采用预定的RNTI在一组不连续的子帧上对所述特定业务的系统信息进行检测。
所述第一接收模块42，还设置为通过RRC专用消息或通过系统广播消息接收用于确定所述一组不连续子帧的参数。
所述配置模块43设置为：利用所述PDSCH信道获得支持短传输时间间隔TTI通信的公共无线资源配置信息，所述短TTI长度小于1ms，所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的PDCCH或位于短TTI中的EPDCCH公共配置信息，位于短TTI中的PHICH相关公共配置信息，位于短TTI中的PUCCH公共配置信息，位于短TTI中的 PDSCH公共配置信息，位于短TTI中的PUSCH公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
所述的装置还可包括：
数据信道处理模块，设置为根据所述公共无线资源配置信息和位于短TTI中的PDCCH上承载的专用控制信息，解调位于短TTI中的PDSCH数据信道或发送位于短TTI中的PUSCH数据信道。
本发明实施例还提供一种信息接收装置，设置于支持一种特定业务的终端，包括：
第二接收模块，设置为接收基站通过无线资源控制RRC连接消息发送的特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
实施例1
如表1所示，根据当前支持短TTI终端接入情况，当多组PRB对需要被使用时，在PDCCH中发送多组PRB对的位置，并且当上行和下行都需要进行配置多组PRB对时，比如对下行sPDSCH信道和上行sPUSCH的信道分配都是采用4组PRB对，这时采用PDCCH信道进行相关公共资源配置不合适。因此，引入一条新的RRC消息，用于发送这些公共无线资源配置信息。这条新的RRC消息在PDSCH信道上发送，采用不同于SI-RNTI的扰码进行加扰，如表1中所示的STTI-RNTI，STTI-RNTI是一个组RNTI，对一组支持短TTI的终端共用。
表1
Figure PCTCN2017078289-appb-000001
实施例2
当支持D2D的终端接入到基站后，基站根据需要确定是否向一组支持D2D的终端采用D2D-RNTI加扰的物理下行共享信道发送更新后的用于D2D通信的系统信息。当某个支持D2D的基站下面的小区内没有D2D终端接入时，基站不需要发送针对D2D终端进行D2D通信的系统信息。或者当小区中支持D2D通信的终端都释放了无线链路时，基站在该小区也不需要针对D2D终端发送用于D2D通信的系统信息。如表2中所示的D2D-RNTI，D2D-RNTI是一个组RNTI，对一组支持D2D通信的终端共用。
表2
Figure PCTCN2017078289-appb-000002
实施例3
图6中给出了一个支持短TTI的终端在特定的子帧检测是否有STTI-RNTI加扰的PDCCH和PDSCH信道发送的示意图。图6中终端的不连续接收周期为10个子帧，其中有3个子帧需要进行检测是否有STTI-RNTI加扰的PDCCH控制信道，起始子帧在一个系统帧内的偏置为0。在子帧k，k+1以及k+2终端需要检测基站是否在这些子帧上利用STTI-RNTI对PDCCH和PDSCH进行加扰，发送了公共无线资源配置信息。类似的，在子帧k+10，k+11，k+12，k+20，k+21，k+22以及k+30，k+31，k+32终端也需要做相关的检测，图中给出的其他位置，终端不需要检测是否有STTI-RNTI加扰的PDCCH控制信道，用于减少电量消耗。图6中的每个不连续接收周期有3个子帧，基站可以根据需要决定是否对承载公共资源配置的RRC消息利用STTI-RNTI加扰进行重复发送。
图7中给出了另外一个支持短TTI的终端在特定的子帧检测是否有STTI-RNTI加扰的PDCCH和PDSCH信道发送的示意图。图7中终端的不连续接收周期为20个子帧，其中有4个子帧需要进行检测是否有STTI-RNTI加扰的PDCCH控制信道，起始子帧在一个系统帧内的偏置为2。在子帧k，k+1，k+2以及k+3上终端需要检测基站是否在这些子帧上利用STTI-RNTI对PDCCH和PDSCH进行加扰，发送了公共无线资源配置信息。类似的，在子帧k+20，k+21，k+22以及k+23上终端也需要做相关的检测，图中给出的其他位置，终端不需要检测是否有STTI-RNTI加扰的PDCCH控制信道，用于减少电量消耗。图7中的每个不连续接收周期T＝20个子帧内，基站可以在S1中的4个子帧上根据需要决定是否对承载公共资源配置的RRC消息利用STTI-RNTI加扰进行重复发送。
在图6和图7的实施例中，对于采用STTI-RNTI加扰的PDCCH和PDSCH信道，PDCCH信道采用DCI format 1C或者1A用于发送相应PDSCH信道的控制信息，PDSCH信道采用QPSK方式调制进行数据发送。其中，DCI format 1C不直接携带用于重复发送的RV(Redundancy Version,冗余版本)信息，RV信息通过子帧号隐式的确定，DCI format 1A携带用于重复发送的RV信息。终端根据STTI-RNTI加扰的PDSCH信道上接收到的支持短TTI通信的相关公共无线资源配置信息和在短TTI内发送的sPDCCH 上承载的专用控制信息用于解调短sPDSCH数据信道或者发送发送sPUCCH数据信道。
在图7中的S1或者S2上的4个连续子帧是否发送向短TTI的终端发送支持短TTI通信的相关公共无线资源配置信息也是由基站来确定的。基站根据系统中终端接入情况和无线资源利用情况，确实是否需要重新调整用于短TTI通信的相关公共无线资源配置信息，如果需要调整，则在S1或者S2内发送相关配置信息，如果不需要调整，基站可以不发送相关配置信息。支持短TTI的终端在S1以及S2内的子帧上检测是有STTI-RNTI加扰的PDCCH，如果没有检测到，终端将仍然使用原来的无线公共资源配置信息，如果终端检测到相应的PDCCH，终端将存储新的公共无线资源配置信息并用于sPDSCH数据信道解调。
实施例4
图8中基站给支持短TTI的终端发送RRC连接重配，在该重配消息中，包括支持短TTI通信的相关公共无线资源配置信息，其中有sPDSCH信道可用的多组PRB对，sPUSCH信道可用的多组PRB对，sPUCCH信道可用的多组PRB对，sPDCCH或sEPDCCH相关公共配置信息，sPHICH相关公共配置信息，sPUCCH相关公共配置信息，sPDSCH相关公共配置信息，sPUSCH相关公共配置信息，针对短TTI的SRS相关公共配置信息，上行功率控制相关公共配置信息，一组用于终端对支持短TTI通信的相关公共无线资源配置信息进行不连续接收的控制参数。一组用于终端对支持短TTI通信的相关公共无线资源配置信息进行不连续接收的控制参数又进一步包括不连续接收周期，不连续周期内起始子帧在一个系统帧内的偏置，从起始子帧开始需要检测相关PDCCH的子帧数。特别地，支持短TTI通信的相关公共无线资源配置信息与目前SIB2中针对1ms TTI通信的公共无线资源配置信息类似，不过要针对短TTI通信的物理信道情况作一些变动，对于不连续接收的控制参数，如图7所示，不连续接收周期为20个子帧，不连续周期内起始子帧在一个系统帧内的偏置为2，从起始子帧开始需要检测相关PDCCH的子帧数为4。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述信息发送方法。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述信息接收方法。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件(例如处理器)完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，例如通过集成电路来实现其相应功能，也可以采用软件功能模块的形式实现，例如通过处理器执行存储于存储器中的程序/指令来实现其相应功能。本发明实施例不限制于任何特定形式的硬件和软件的结合。
虽然本申请所揭示的实施方式如上，但其内容只是为了便于理解本申请的技术方案而采用的实施方式，并非用于限定本申请。任何本申请所属技术领域内的技术人员，在不脱离本申请所揭示的核心技术方案的前提下，可以在实施的形式和细节上做任何修改与变化，但本申请所限定的保护范围，仍须以所附的权利要求书限定的范围为准。
工业实用性
本发明实施例中，基站可以根据需要向一组支持特定业务的终端发送相应的系统信息更新，避免了LTE网络中系统信息更新时带来的终端功率消耗问题，通过在终端接入网络之后才发送特定业务的系统信息，也避免了LTE网络中不停地周期性发送各种特定业务的系统信息，减少了基站无线资源和能耗浪费，提高了系统信息的发送效率。此外，针对支持短TTI通信的业务，本发明实施例也可以更好的支持短TTI终端对带宽的不同需求，避免在一个子帧内同时发送针对多组PRB对的不同slow DCI，也可以避免分别对下行和上行发送slow DCI，此外，将公共资源分配信息放在PDSCH上发送，可以利用标准中已有的DCI格式，避免在PDCCH中引入新的DCI格式。

Claims (36)

  1. 一种信息发送方法，包括：
    采用预定的无线网络临时标识RNTI对物理下行控制信道中的循环冗余码CRC部分和物理下行共享信道进行加扰；其中，所述加扰后的物理下行共享信道携带特定业务的系统信息；
    将加扰后的所述物理下行控制信道和所述物理下行共享信道发送给支持所述特定业务的终端。
  2. 如权利要求1所述的方法，其中：
    所述特定业务包括短传输时间间隔TTI通信业务、设备到设备D2D业务中的至少一种；
    所述采用预定的RNTI对物理下行控制信道中的CRC部分和物理下行共享信道进行加扰包括：
    所述系统信息用于不同的特定业务时，所述预定的RNTI不同。
  3. 如权利要求1所述的方法，其中：所述将加扰后的所述物理下行控制信道和所述物理下行共享信道发送给支持所述特定业务的终端包括：
    当基站发送更新的所述特定业务的系统信息时，将加扰后的物理下行控制信道和物理下行共享信道在一组不连续的子帧中的一个或多个子帧上发送。
  4. 如权利要求3所述的方法，其中：
    所述一组不连续的子帧至少由以下一个或多个参数确定：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
  5. 如权利要求4所述的方法，还包括：基站通过无线资源控制RRC专用消息将用于确定所述一组不连续的子帧的参数发送给终端或终端接入网络之前由基站通过系统广播消息将用于确定所述一组不连续的子帧的参数发送给所有终端。
  6. 如权利要求1所述的方法，其中：所述特定业务为短传输时间间隔 TTI通信业务，所述系统信息为公共无线资源配置信息，所述采用预定的RNTI对物理下行控制信道中的CRC部分和物理下行共享信道进行加扰包括：
    采用一个组RNTI对所述物理下行控制信道中的CRC部分和所述物理下行共享信道进行加扰，所述加扰后的物理下行共享信道携带支持短TTI通信的公共无线资源配置信息，所述组RNTI由一组所述支持短TTI的终端共用。
  7. 如权利要求6所述的方法，其中：所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的物理下行控制信道或位于短TTI中的增强物理下行控制信道公共配置信息，位于短TTI中的物理混合自动重传指示信道相关公共配置信息，位于短TTI中的物理上行控制信道公共配置信息，位于短TTI中的物理下行共享信道公共配置信息，位于短TTI中的物理上行共享信道公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
  8. 如权利要求7所述的方法，其中：所述下行链路相关信道可用带宽是一组或多组物理资源块PRB对，所述上行链路相关信道可用带宽是一组或多组PRB对，所述一组PRB对包括一个或多个PRB对。
  9. 一种信息发送方法，包括：
    通过无线资源控制RRC连接消息向支持一种特定业务的终端发送所述特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
  10. 如权利要求9所述的方法，其中：所述特定业务为短传输时间间隔TTI通信业务，所述系统信息为公共无线资源配置信息，所述通过无线资源控制RRC连接消息向支持一种特定业务的终端发送所述特定业务的系统信息包括：
    基站向支持短传输时间间隔TTI的终端发送支持短TTI通信的公共无线资源配置信息，所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的物理下行控制信道或位于短TTI中的增强物理下行控制信道公共配置信息，位于短TTI中的物理混合自动重传指示信道公共配置信息，位于短TTI中的物理上行控制信道公共配置信息，位于短TTI中的物理下行共享信道公共配置信息，位于短TTI中的物理上行共享信道公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
  11. 如权利要求10所述的方法，其中：所述下行链路相关信道可用带宽是一组或多组物理资源块PRB对，所述上行链路相关信道可用带宽是一组或多组PRB对，所述一组PRB对包括一个或多个PRB对。
  12. 一种信息接收方法，包括：
    采用预定的无线网络临时标识RNTI在物理下行控制信道公共搜索空间进行检测，当检测到采用所述预定的RNTI加扰的物理下行控制信道时，接收所述物理下行控制信道指示的物理下行共享信道；其中，所述物理下行共享信道被所述预定的RNTI加扰；
    利用所述物理下行共享信道获得特定业务的系统信息。
  13. 如权利要求12所述的方法，其中：所述加扰后的物理下行共享信道携带的系统信息用于不同的特定业务时，所述预定的RNTI不同。
  14. 如权利要求12所述的方法，其中：采用预定的RNTI在物理下行控制信道公共搜索空间进行检测包括：
    采用预定的RNTI在一组不连续的子帧上对所述特定业务的系统信息进行检测。
  15. 如权利要求14所述的方法，其中：所述一组不连续的子帧至少由以下一个或多个参数确定：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测PDCCH的子帧数。
  16. 如权利要求15所述的方法，其中：通过RRC专用消息或通过系统 广播消息接收用于确定所述一组不连续子帧的参数。
  17. 如权利要求12所述的方法，其中：所述特定业务为短传输时间间隔TTI通信业务，所述系统信息为公共无线资源配置信息，所述利用所述物理下行共享信道获得特定业务的系统信息包括：利用所述物理下行共享信道获得支持短传输时间间隔TTI通信的公共无线资源配置信息，所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的物理下行控制信道或位于短TTI中的增强物理下行控制信道公共配置信息，位于短TTI中的物理混合自动重传指示信道相关公共配置信息，位于短TTI中的物理上行控制信道公共配置信息，位于短TTI中的物理下行共享信道公共配置信息，位于短TTI中的物理上行共享信道公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
  18. 如权利要求17所述的方法，其中：所述下行链路相关信道可用带宽是一组或多组PRB对，所述上行链路相关信道可用带宽是一组或多组PRB对，所述一组PRB对包括一个或多个PRB对。
  19. 如权利要求17所述的方法，还包括：
    根据所述公共无线资源配置信息和位于短TTI中的物理下行控制信道上承载的专用控制信息，解调位于短TTI中的物理下行共享信道或发送位于短TTI中的物理上行共享信道。
  20. 一种信息接收方法，包括：
    接收基站通过无线资源控制RRC连接消息发送的特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
  21. 如权利要求20所述的方法，其中：接收基站通过无线资源控制RRC连接消息发送的特定业务的系统信息包括：支持短传输时间间隔TTI的终端接收用于支持短TTI通信的公共无线资源配置信息，所述支持短TTI通信的 公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的物理下行控制信道或位于短TTI中的增强物理下行控制信道公共配置信息，位于短TTI中的物理混合自动重传指示信道相关公共配置信息，位于短TTI中的物理上行控制信道公共配置信息，位于短TTI中的物理下行共享信道公共配置信息，位于短TTI中的物理上行共享信道公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
  22. 如权利要求21所述的方法，其中：所述下行链路相关信道可用带宽是一组或多组物理资源块PRB对，所述上行链路相关信道可用带宽是一组或多组PRB对，所述一组PRB对包括一个或多个PRB对。
  23. 一种信息发送装置，包括：
    加扰模块，设置为采用预定的无线网络临时标识RNTI对物理下行控制信道中的循环冗余码CRC部分和物理下行共享信道进行加扰；其中，所述加扰后的物理下行共享信道携带特定业务的系统信息；
    第一通信模块，设置为将加扰后的所述物理下行控制信道和所述物理下行共享信道发送给支持所述特定业务的终端。
  24. 如权利要求23所述的装置，其中：
    所述特定业务包括短传输时间间隔TTI通信业务、设备到设备D2D业务中的至少一种；
    所述系统信息用于不同的特定业务时，所述预定的无线网络临时标识RNTI不同。
  25. 如权利要求23所述的装置，其中：所述第一通信模块设置为：当发送更新的所述特定业务的系统信息时，将加扰后的物理下行控制信道和物理下行共享信道在一组不连续的子帧中的一个或多个子帧上发送，所述一组不连续的子帧至少由以下一个或多个参数确定：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
  26. 如权利要求25所述的装置，其中：所述第一通信模块还设置为： 通过RRC专用消息将用于确定所述一组不连续的子帧的参数发送给终端或终端接入网络之前通过系统广播消息将用于确定所述一组不连续的子帧的参数发送给所有终端。
  27. 如权利要求23所述的装置，其中：所述特定业务为短传输时间间隔TTI通信业务，所述系统信息为公共无线资源配置信息，所述加扰模块设置为：采用一个组RNTI对所述物理下行控制信道中的CRC部分和所述物理下行共享信道进行加扰，所述加扰后的物理下行共享信道携带支持短传输时间间隔TTI通信的公共无线资源配置信息，所述组RNTI由一组所述支持短TTI的终端共用。
  28. 如权利要求27所述的装置，其中，所述第一通信模块设置为：
    采用下行控制信息模式DCI format1C或者DCI format1A发送加扰后的所述物理下行控制信道；
    采用正交相移键控QPSK调制方式发送加扰后的所述物理下行共享信道。
  29. 一种信息发送装置，包括：
    第二通信模块，设置为通过无线资源控制RRC连接消息向支持一种特定业务的终端发送所述特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理下行控制信道的子帧数。
  30. 一种信息接收装置，包括：
    检测模块，设置为采用预定的无线网络临时标识RNTI在物理下行控制信道公共搜索空间进行检测；
    第一接收模块，设置为当检测到采用所述预定的RNTI加扰的物理下行控制信道时，接收所述物理下行控制信道指示的物理下行共享信道；其中，所述物理下行共享信道被所述预定的RNTI加扰；
    配置模块，设置为利用所述物理下行共享信道获得特定业务的系统信息。
  31. 如权利要求30所述的装置，其中：所述加扰后的物理下行共享信道携带的系统信息用于不同的特定业务时，所预定的RNTI不同。
  32. 如权利要求30所述的装置，其中：所述检测模块设置为：
    采用预定的RNTI在一组不连续的子帧上对所述特定业务的系统信息进行检测。
  33. 如权利要求32所述的装置，其中，所述第一接收模块，还设置为通过RRC专用消息或通过系统广播消息接收用于确定所述一组不连续子帧的参数。
  34. 如权利要求30所述的装置，其中：所述特定业务为短传输时间间隔TTI通信业务，所述系统信息为公共无线资源配置信息，所述配置模块设置为：利用所述物理下行共享信道获得支持短传输时间间隔TTI通信的公共无线资源配置信息，所述支持短TTI通信的公共无线资源配置信息包括以下的一项或多项：下行链路相关信道可用带宽，上行链路相关信道可用带宽，位于短TTI中的物理下行控制信道或位于短TTI中的增强物理下行控制信道公共配置信息，位于短TTI中的物理混合自动重传指示信道相关公共配置信息，位于短TTI中的物理上行控制信道公共配置信息，位于短TTI中的物理下行共享信道公共配置信息，位于短TTI中的物理上行共享信道公共配置信息，针对短TTI的信道探测参考信号SRS公共配置信息，上行功率控制公共配置信息。
  35. 如权利要求34所述的装置，还包括：
    数据信道处理模块，设置为根据所述公共无线资源配置信息和位于短TTI中的物理下行控制信道上承载的专用控制信息，解调位于短TTI中的物理下行共享信道或发送位于短TTI中的物理上行共享信道。
  36. 一种信息接收装置，包括：
    第二接收模块，设置为接收基站通过无线资源控制RRC连接消息发送的特定业务的系统信息，所述系统信息包括用于确定该系统信息更新的一组不连续子帧的相关参数，所述相关参数包括以下一个或多个：不连续接收周期、不连续周期内起始子帧在系统帧内的偏置、从起始子帧开始待检测物理 下行控制信道的子帧数。
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