WO2016155245A1 - Procédé de traitement d'informations, station de base, appareil et système électronique - Google Patents

Procédé de traitement d'informations, station de base, appareil et système électronique Download PDF

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Publication number
WO2016155245A1
WO2016155245A1 PCT/CN2015/089267 CN2015089267W WO2016155245A1 WO 2016155245 A1 WO2016155245 A1 WO 2016155245A1 CN 2015089267 W CN2015089267 W CN 2015089267W WO 2016155245 A1 WO2016155245 A1 WO 2016155245A1
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Prior art keywords
electronic apparatus
information
control channel
control
control information
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PCT/CN2015/089267
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English (en)
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Xuefeng LAI
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Lenovo (Beijing) Co., Ltd.
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Publication of WO2016155245A1 publication Critical patent/WO2016155245A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties

Definitions

  • This disclosure relates to management technology in communication field, and particularly to an information processing method, a base station, an electronic apparatus and a system.
  • the band width supported by some new electronic apparatus is relatively small since the usage of these new electronic apparatus is different from that of conventional electronic apparatus.
  • they may be a machine type communication (MTC) terminal with a band width of 1.4MHz. If an emerging electronic apparatus with relatively small band width acquires control information from a physical downlink control channel by current method, it may encounter the problems of a higher searching complexity in a wide bandwidth and result in higher performance requirement and higher power consumption of these electronic apparatus.
  • MTC machine type communication
  • the embodiments provide an information processing method, a base station, an electronic apparatus and a system.
  • the embodiments provide an information processing method includes: acquiring control information for an electronic apparatus of second kind, and the electronic apparatus of second kind is different from a electronic apparatus of first kind, and the bandwidth supported by the electronic apparatus of first kind is no more than a first bandwidth, and the bandwidth supported by the electronic apparatus of second kind is no more than a second bandwidth which is less than the first bandwidth; mapping the control information for the electronic apparatus of second kind to a second control channel; and the second control channel is different from a first control channel which is used for providing control information for the electronic apparatus of first kind, and transmitting the control information to the electronic apparatus of second kind through the second control channel.
  • the method further includes: acquiring resource management information for the electronic apparatus of second kind, wherein, the resource management information is used for indicating a location of resource of the second control information; mapping the resource management information to a broadcast channel; and transmitting the resource management information to the electronic apparatus of second kind through the broadcast channel.
  • the second control channel includes: control channel resource elements of preset number; correspondingly, mapping the control information for the electronic apparatus of second kind to the second control channel includes: determining a first number of the control channel resource elements required by carrying the control information for the electronic apparatus of second kind; mapping the control information for the electronic apparatus of second kind to the second control channel including the control channel resource elements of the first number.
  • determining the first number of the control channel resource elements required by carrying the control information with respect of the electronic apparatus of second kind includes: acquiring channel quality indication information transmitted from the electronic apparatus of second kind; and determining the first number of the control channel resource elements required by carrying the control information for the electronic apparatus of second kind based on the channel quality indication information.
  • acquiring the control information for the electronic apparatus of second kind includes: treating at least one piece of information of paging information, system information block, random access response information, downlink control information corresponding to the electronic apparatus of second kind as the control information with respect to the electronic apparatus of second kind.
  • the embodiments provide an information processing method applied in an electronic apparatus which is an electronic apparatus of second kind different from an electronic apparatus of first kind, and the bandwidth supported by the electronic apparatus of first kind is no more than a first bandwidth, and the bandwidth supported by the electronic apparatus of second kind is no more than a second bandwidth which is less than the first bandwidth, and the method includes: accessing to a second control channel, wherein, the second control channel is different from a first control channel, and the first control channel is used for providing control information for the electronic apparatus of first kind, and the second control channel is used for providing control information for the electronic apparatus of second kind; and acquiring control information from the second control channel.
  • the method further includes: acquiring resource management information for the electronic apparatus of second kind from a broadcast channel, wherein, the resource management information is used for indicating a location of resource of the second control information; and accessing to corresponding resource according to the resource management information.
  • acquiring control information from the second control channel includes: determining channel quality indication information based on received reference signal; determining a first number of control channel resource elements according to the channel quality indication information; and parsing to obtain the control information from the second control channel based on the first number of the control channel resource elements.
  • the method includes: parsing to obtain at least one piece of the following information from the control information: paging information, system information block, random access response information and downlink control information corresponding to the electronic apparatus of second kind.
  • the embodiments further provide a base station, and the base station includes: an information acquiring unit for acquiring control information for an electronic apparatus of second kind, and the electronic apparatus of second kind is different from a electronic apparatus of first kind, and the bandwidth supported by the electronic apparatus of first kind is no more than a first bandwidth, and the bandwidth supported by the electronic apparatus of second kind is no more than a second bandwidth which is less than the first bandwidth; a processing unit for mapping the control information for the electronic apparatus of second kind to the second control channel, and the second control channel is different from a first control channel which is used for providing control information for the electronic apparatus of first kind; and a communication unit for transmitting the control information to the electronic apparatus of second kind through the second control channel.
  • the information acquiring unit is further used for acquiring resource management information for the electronic apparatus of second kind, wherein, the resource management information is used for indicating a location of resource of the second control information; the processing unit is further used for mapping the resource management information to a broadcast channel; and the communication unit is further used for transmitting the resource management information to the electronic apparatus of second kind through the broadcast channel.
  • the second control channel includes: control channel resource elements of preset number; correspondingly, the processing unit is specifically used for determining a first number of the control channel resource elements required by carrying the control information for the electronic apparatus of second kind and mapping the control information for the electronic apparatus of second kind to the second control channel including the control channel resource elements of the first number.
  • the processing unit is used specifically for acquiring channel quality indication information transmitted by the electronic apparatus of second kind, and determining the first number of the control channel resource elements required by carrying the control information for the electronic apparatus of second kind based on the channel quality indication information.
  • the information acquiring unit is specifically used for treating at least one piece of information of paging information, system information block, random access response information and downlink control information corresponding to the electronic apparatus of second kind as the control information with respect to the electronic apparatus of second kind.
  • the embodiments further provide an electronic apparatus which is an electronic apparatus of second kind different from an electronic apparatus of first kind, and , and the second control channel is different from a first control channel which is used for providing control information for the electronic apparatus of first kind, and the electronic apparatus includes: a communication unit for accessing to a second control channel, wherein, the second control channel is different from a first control channel, and the first control channel is used for providing control information for the electronic apparatus of first kind, and the second control channel is used for providing control information for the electronic apparatus of second kind; and an information processing unit for acquiring control information from the second control channel.
  • the information processing unit is further used for acquiring resource management information for the electronic apparatus of second kind from a broadcast channel, wherein, the resource management information is used for indicating a location of resource of the second control information and accessing to corresponding resource according to the resource management information.
  • the communication unit is specifically used for determining channel quality indication information based on received reference signal; correspondingly, the information processing unit is specifically used for determining a first number of control channel resource elements according to the channel quality indication information, and parsing to obtain the control information from the second control channel based on the first number of the control channel resource elements.
  • the information processing unit is specifically used for parsing to obtain at least one piece of the following information from the control information: paging information, system information block, random access response information and downlink control information corresponding to the electronic apparatus of second kind.
  • the embodiments further provide an information processing system including: a base station for acquiring control information for the electronic apparatus of second kind, and the electronic apparatus of second kind is different from a electronic apparatus of first kind, and the bandwidth supported by the electronic apparatus of first kind is no more than a first bandwidth, and the bandwidth supported by the electronic apparatus of second kind is no more than a second bandwidth which is less than the first bandwidth; mapping the control information for an electronic apparatus of second kind to a second control channel, and the second control channel is different from a first control channel which is used for providing control information for the electronic apparatus of first kind; and transmitting the control information to the electronic apparatus of second kind through the second control channel; and an electronic apparatus for accessing to the second control channel and acquiring control information from the second control channel.
  • the information processing method, the base station, the electronic apparatus and the system provided by this disclosure can determine the second control channel for the electronic apparatus of second kind specifically, and map the control information for the electronic apparatus of second kind to the second control channel and transmit the control information to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search the control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind, and can be compatible to the original broadcast channel.
  • Fig. 1 is schematic diagram of a flow of an information processing method at a base station side of the embodiments
  • Fig. 2 is a schematic diagram of a flow of indicating resource position through broadcast channels of the embodiments
  • Fig. 3 is a schematic diagram of an allocation of resource of the embodiments.
  • Fig. 4 is a schematic diagram of division of the broadcast channels of the embodiments.
  • Fig. 5 is a schematic diagram of a flow of an information processing method at an electronic apparatus side of the embodiments
  • Fig. 6 is a schematic diagram of a flow of acquiring the allocation of resource at the electronic apparatus side of the embodiments
  • Fig. 7 is a schematic diagram of a flow of parsing control information of the embodiments.
  • Fig. 8 is a schematic diagram of searching CCE directions at the time of parsing the control information of the embodiments
  • Fig. 9 is a detailed flow of parsing the control information of the embodiments.
  • Fig. 10 is a schematic diagram of a constituent structure of a base station of the embodiments.
  • Fig. 11 is a schematic diagram of a constituent structure of an electronic apparatus of the embodiments.
  • Fig. 12 is a schematic diagram of a constitution of an information processing system of the embodiments.
  • the embodiment provides an information processing method applied in a base station, and as shown in Fig. 1, the method includes:
  • Step 101 determining a second control channel different from a first control channel, wherein, the first control channel is used for providing control information for an electronic apparatus of first kind, and the second control channel is used for providing control information for an electronic apparatus of second kind, and the bandwidth supported by the electronic apparatus of first kind is no more than a first bandwidth, and the bandwidth supported by the electronic apparatus of second kind is no more than a second bandwidth which is less than the first bandwidth;
  • Step 102 generating control information for the electronic apparatus of the second kind
  • Step 103 mapping the control information for the electronic apparatus of second kind to the second control channel
  • Step 104 transmitting the corresponding control information to the electronic apparatus of second kind through the second control channel.
  • the first control channel may be a physical downlink control channel (PDCCH) for mainly carrying information for scheduling and other control purpose, which may specifically include information of transmission format, allocation of resource, uplink scheduling permission, power control and uplink retransmission information or the like.
  • PDCCH Physical downlink control channel
  • symbols constitute resource element group (RE Group, REG) and control channel element (CCE) .
  • REG resource element group
  • CCE control channel element
  • one CCE contains nine REGs.
  • the electronic apparatus of first kind may be a common mobile terminal, and the first bandwidth may be 20M, and generally, the electronic apparatus of first kind may support a communication bandwidth of 1.4M, 5M, 10M, 15M and 20M or the like.
  • the electronic apparatus of second kind may be a machine type communication (MTC) terminal, and correspondingly, the second bandwidth may be 1.4M.
  • MTC machine type communication
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less bandwidth can search control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind.
  • the location of the resources occupied by the second control channel can be indicated by the broadcast channel, as shown in Fig. 2 specifically, it includes:
  • Step 201 generating resource management information for the electronic apparatus of second kind, wherein, the resource management information is used for indicating the location of resource of the second control information, wherein the second control information means the control information for the electronic apparatus of the second kind;
  • Step 202 mapping the resource management information to the broadcast channel
  • Step 203 transmitting the resource management information to the electronic apparatus of second kind through the broadcast channel.
  • the location of resource position of the second control information may be: locations of symbols with same frequency domain and different time domain with respect to each location of resource for the electronic apparatus of second kind.
  • the location of resource of the second control information may be set at the fourth, the fifth and the sixth symbol, which is in same frequency domain and in previous one time slot in time domain with respect to a resource 31 for the electronic apparatus of second kind. It assumes that the resource 31 for the electronic apparatus of second kind is located at the second time slot in a subframe 0, then the second control information is located at the fourth, the fifth and the sixth symbol in the first time slot of the subframe 0.
  • the broadcast channels can be divided into a broadcast channel of first kind and a broadcast channel of second kind, wherein, the broadcast channel of first kind is used for providing system information for at least N electronic apparatus of first kind, and the broadcast channel of second kind is used for providing the resource management information for M electronic apparatus of second kind.
  • the broadcast channel of first kind may be a physical broadcast channel (PBCH) for mainly carrying system information, that is, master information block (MIB) , which is updated every 40ms and retransmitted every 10ms.
  • PBCH physical broadcast channel
  • MIB master information block
  • the PBCH is transmitted in time slot 1 of subframe 0, and in the frequency domain, the PBCH occupies a frequency bandwidth of 1.25M.
  • the broadcast channel of second kind may occupy same band width as the PBCH in the frequency domain, and is transmitted at a location occupying different symbols from PBCH in time slot 1 of subframe 0 in the time domain.
  • Fig. 4 presents a divisional relationship in the time domain and the frequency domain of the broadcast channel of first kind and the broadcast channel of second kind, the broadcast channel of second kind may occupy last three symbols in time slot 1 in the time domain and occupy the center of the band in the frequency domain.
  • Fig. 4 presents 12 RBs of a central frequency band in two time slots of one subframe. The first four symbols in the time domain in 6 RBs in the second time slot are used for carrying the broadcast channel of first kind, The last three symbols in the time domain in the 6 RBs in the second time slot are used for carrying broadcast channel of second kind, wherein, resources elements occupied by the broadcast channel of second kind are 214 REs.
  • the control information for the second kind of electronic apparatus can be mapped to the second control channel and the control information can be transmitted to the second kind of electronic apparatus.
  • the second kind of electronic apparatus supporting less bandwidth can search control information from the second control channel, so as to reduce the searching complexity of the second kind of electronic apparatus, and in turn reduce a power consumption and latency of the second kind of electronic apparatus, and can be compatible to the original broadcast channel.
  • the second control channel in the present embodiment may include: preset number of resources elements for the control channel.
  • mapping the control information for the second kind of electronic apparatus to the second control channel may include: determining a first number of the control channel resources elements required by carrying the control information for the electronic apparatus of second kind; and mapping the control information for the electronic apparatus of second kind to the second control channel including the control channel resources elements of the first number.
  • manners of determining the first number of the control channel resources elements required by carrying the control information for the electronic apparatus of second kind may have the following two kinds.
  • initial values of the first number of the control channel resources elements may be set as 1, and the first number may be adjusted to 2 after receiving information of erroneous receipt feedback by the electronic apparatus of second kind.
  • Second manner acquiring channel quality indication information transmitted by the electronic apparatus of second kind, and determining the first number of the control channel resources elements required by carrying the control information for the electronic apparatus of second kind based on the channel quality indication information.
  • the first number of the control channel resource may refer to a polymerization degree of the CCE.
  • the quality indication information may be information feedback by the electronic apparatus of second kind according to status of receiving the reference signal. If the electronic apparatus of second kind starts to decode that of higher CQI level (better corresponding downlink channel) by adopting lower polymerization degree of CCE according to current calculated CQI information, times of blind decode can be reduced.
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind.
  • generating the control information for the electronic apparatus of second kind includes: treating at least one piece of information of paging information, system information block, random access response information, downlink control information corresponding to the electronic apparatus of second kind as the control information for the electronic apparatus of second kind.
  • the downlink control information corresponding to the electronic apparatus of second kind can be used to provide specific control information for each different electronic apparatus of second kind to obtain position information of other channels corresponding thereto.
  • the system information block can be used to search system information block (SIB) 1 and control information corresponding to SIB2.
  • SIB system information block
  • Random access response information can be used to indicate an allocation of resource in an uplink of the electronic apparatus of second kind accessed randomly.
  • Paging information can be used to indicate an identification list of the electronic apparatus of second kind paged by the base station; since the length of the paging information is relatively small, the paging information no longer needs to be mapped to a physical downlink shared channel (PDSCH) in the present embodiment, so as to be able to avoid the electronic apparatus of second kind searching the paging information in the PDSCH once more, thus, the power consumption of the electronic apparatus of second kind can be further reduced.
  • PDSCH physical downlink shared channel
  • the information of the first number of the control channel resources elements is downlink control information corresponding to each of the electronic apparatus of second kind according to the channel quality indication information of the electronic apparatus of second kind, and other several kinds of information is generally transmitted by using fixed number of the control channel resources elements.
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind, and can be compatible to the original broadcast channel.
  • the embodiment provides an information processing method applied in an electronic apparatus which is an electronic apparatus of second kind different from an electronic apparatus of first kind, and the bandwidth supported by the electronic apparatus of first kind is no more than a first bandwidth, and the bandwidth supported by the electronic apparatus of second kind is no more than a second bandwidth which is less than the first bandwidth, and as shown in Fig. 5, the method includes:
  • Step 501 accessing to a second control channel, wherein, the second control channel is different from a first control channel, and the first control channel is used for providing control information for the electronic apparatus of first kind, and the second control channel is used for providing control information for the electronic apparatus of second kind;
  • Step 502 acquiring corresponding control information from the second control channel.
  • the electronic apparatus of first kind may be a common mobile terminal, and the first band width may be 20M, and generally, the electronic apparatus of first kind may support a communication band width of 1.4M, 5M, 10M, 15M and 20M or the like.
  • the electronic apparatus of second kind may be a machine type communication (MTC) terminal, and correspondingly, the second band width only can be 1.4M.
  • MTC machine type communication
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption of the electronic apparatus of second kind.
  • location of resource at which the second control channel is acquired from the broadcast channel further includes:
  • Step 601 acquiring resource management information for the electronic apparatus of second kind from a broadcast channel, wherein, the resource management information is used for indicating a location of resource of the second control information;
  • Step 602 accessing to corresponding resource according to the resource management information.
  • locations of resource of the second control information may be: locations of symbols with same frequency domain and different time domain with respect to each resource position for the second kind of electronic apparatus.
  • the resource position of the second control information may be set at the fourth, the fifth and the sixth symbol, which is in same frequency domain and in previous one time slot in time domain with respect to a resource 31 for the electronic apparatus of second kind. It assumes that the resource 31 for the electronic apparatus of second kind is located at the second time slot in subframe 0, then the second control information is located at the fourth, the fifth and the sixth symbol in first time slot of subframe 0.
  • the broadcast channels can be divided into a broadcast channel of first kind and a broadcast channel of second kind, wherein, the broadcast channel of first kind is used for providing system information for at least N electronic apparatus of first kind, and the broadcast channel of second kind is used for providing the resource management information for M electronic apparatus of second kind.
  • the broadcast channel of first kind may be a physical broadcast channel (PBCH) for mainly carrying system information, that is, master information block (MIB) , which is updated every 40ms and retransmitted every 10ms.
  • PBCH physical broadcast channel
  • MIB master information block
  • the PBCH is transmitted in time slot 1 of subframe 0, and in the frequency domain, the PBCH occupies a frequency bandwidth of 1.25M.
  • the broadcast channel of second kind may occupy same band width as the PBCH in the frequency domain, and is transmitted at a location occupying different symbols from the PBCH in time slot 1 of subframe 0 in the time domain.
  • Fig. 4 presents a divisional relationship in the time domain and the frequency domain of the broadcast channel of first kind and the broadcast channel of second kind, the broadcast channel of second kind may occupy last three symbols in time slot 1 in the time domain and occupy the center of the band in the frequency domain.
  • Fig. 4 presents 12 RBs in a central frequency band in two time slots of one subframe. The first four symbols in the time domain in 6 RBs in the second time slot are used for carrying the broadcast channel of first kind. The last three symbols in the time domain in the 6 RBs in the second time slot are used for carrying broadcast channel of second kind, wherein, resources elements occupied by the broadcast channel of second kind are 214 REs.
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind, and can be compatible to the original broadcast channel.
  • acquiring corresponding control information from the second control channel can include:
  • Step 701 determining channel quality indication information based on received reference signal
  • Step 702 determining a first number of the control channel resources elements according to the channel quality indication information
  • Step 703 parsing to obtain the control information from the second control channel based on the first number of the control channel resources elements.
  • Determining channel quality indication information based on received reference signal may be: after receiving reference signal (RS) by the electronic apparatus of second kind, determining received power of reference signal according to the RS, and in turn determining channel quality indication information according to the received power of reference signal.
  • RS reference signal
  • the electronic apparatus of the second kind can determine the first number of the control channel resources elements according to currently calculated channel quality indication information, and in turn parse the control information according to the determined first number.
  • the first number of the control channel resources elements may be a polymerization degree of CCE.
  • the method includes: parsing to obtain at least one information of the following from the control information: paging information, system information block, random access response information and downlink control information corresponding to the electronic apparatus of the second kind.
  • Fig. 8 search directions in time domain and frequency domain of the control information can be shown in Fig. 8, that is, a direction in the time domain from early to late in time, and a direction in the frequency domain from high to low in frequency.
  • information of the first number of the control channel resources elements generally is determined to be downlink control information corresponding to each of the electronic apparatus of second kind according to the channel quality indication information of the electronic apparatus of second kind, and other several kinds of information is transmitted by using fixed number of the control channel resources elements generally.
  • Number of the control channel resources elements for each kind of information can be shown as following table:
  • Step 901 acquiring CQI by the electronic apparatus of second kind firstly.
  • Step 902 deciding whether the CQI is larger than a threshold, wherein, the threshold can be set as a matter of experience, for example, can be set as 8, i.e., CQI>8, which illustrates that a quality of the downlink channel of a UE is good, a polymerization degree is 1, and the efficiency is high; otherwise, it illustrates that the quality of the downlink channel of the UE is not so good, the polymerization degree is 2, and it can be transmitted by using an encoding mode of lower code rate, which ensures that the UE can receive information of the PDCCH correctly.
  • step 903 is executed; otherwise, step 906 is executed.
  • Step 903 setting an extracting pointer to extract a single CCE to decode according to search directions.
  • Step 904 checking the extracted CCE by using a scrambling code itself to decide whether the checking is successful, if it is successful, it determines that the control information (DCI) is acquired successfully, and a processing flow ends; otherwise, step 905 is executed.
  • DCI control information
  • Step 905 deciding whether the current extracting pointer has already pointed to end of the second control channel, and if the current extracting pointer has already pointed to the end of the second control channel, it determines that acquisition of the DCI fails, and the processing flow ends; otherwise, it returns to step 903.
  • Step 906 setting the extracting pointer to extract two CCEs to decode according to search directions.
  • Step 907 checking the extracted two CCEs by using a scrambling code itself to decide whether the checking is successful, if it is successful, it determines that the control information (DCI) is acquired successfully, and the processing flow ends; otherwise, step 908 is executed.
  • DCI control information
  • Step 908 deciding whether the current extracting pointer has already pointed to the end of the second control channel, and if the current extracting pointer has already pointed to the end of the second control channel, it determines that the acquisition of the DCI fails, and the processing flow ends; otherwise, it returns to step 906.
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind, and can be compatible to the original broadcast channel.
  • the embodiment provides a base station, and as shown in Fig. 10, the base station includes: a setting unit 1001 for determining a second control channel different from a first control channel, wherein, the first control channel is used for providing control information for an electronic apparatus of first kind, and the second control channel is used for providing control information for an electronic apparatus of second kind, and the bandwidth supported by the electronic apparatus of first kind is no more than a first bandwidth, and the bandwidth supported by the electronic apparatus of second kind is no more than a second bandwidth which is less than the first bandwidth; an information generating unit 1002 for generating control information for the electronic apparatus of second kind; a processing unit 1003 for mapping the control information for the electronic apparatus of second kind to the second control channel; a communication unit 1004 for transmitting the corresponding control information to the electronic apparatus of second kind through the second control channel.
  • a setting unit 1001 for determining a second control channel different from a first control channel, wherein, the first control channel is used for providing control information for an electronic apparatus of first kind, and the second control channel is used for
  • the first control channel may be a physical downlink control channel (PDCCH) for mainly carrying information for scheduling and other control purpose, which may specifically include information of transmission format, allocation of resource, uplink scheduling permission, power control and uplink retransmission or the like.
  • PDCCH Physical downlink control channel
  • symbols constitute resource element group (RE Group, REG) and control channel element (CCE) .
  • REG resource element group
  • CCE control channel element
  • one CCE contains nine REGs.
  • the electronic apparatus of first kind may be a common mobile terminal, and the first band width may be 20M, and generally, the electronic apparatus of first kind may support a communication band width of 1.4M, 5M, 10M, 15M and 20M or the like.
  • the electronic apparatus of second kind may be a machine type communication (MTC) terminal, and correspondingly, the second band width may be 1.4M.
  • MTC machine type communication
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind.
  • the information generating unit is further used for generating resource management information for the electronic apparatus of second kind, wherein, the resource management information is used for indicating the location of resource of the second control information, wherein the second control information means the control information for the electronic apparatus of the second kind.
  • the processing unit is further used for mapping the resource management information to a broadcast channel.
  • the communication unit is further used for transmitting the resource management information to the electronic apparatus of second kind through the broadcast channel.
  • the locations of resource of the second control information may be: locations of symbols with same frequency domain and different time domain with respect to each location of resource for the second kind of electronic apparatus; for example, as shown in Fig. 3, the location of resource of the second control information may be set at the fourth, the fifth and the sixth symbol, which is in same frequency domain and in previous one time slot in time domain with respect to a resource 31 for the electronic apparatus of second kind. It assumes that the resource 31 for the electronic apparatus of second kind is located at the second time slot in subframe 0, then the second control information is located at the fourth, the fifth and the sixth symbol in the first time slot of subframe 0.
  • the broadcast channels can be divided into a broadcast channel of first kind and a broadcast channel of second kind, wherein, the broadcast channel of first kind is used for providing system information for at least N electronic apparatus of first kind, and the broadcast channel of second kind is used for providing the resource management information for M electronic apparatus of second kind.
  • the broadcast channel of first kind may be a physical broadcast channel (PBCH) for mainly carrying system information, that is, master information block (MIB) , which is updated every 40ms and retransmitted every 10ms.
  • PBCH physical broadcast channel
  • MIB master information block
  • the PBCH is transmitted in time slot 1 of subframe 0, and in the frequency domain, the PBCH occupies a frequency bandwidth of 1.25M.
  • the broadcast channel of second kind may occupy same band width as the PBCH in frequency domain, and is transmitted at a location occupying different symbols from the PBCH in time slot 1 of subframe 0 in the time domain.
  • Fig. 4 presents a divisional relationship in the time domain and the frequency domain of the broadcast channel of first kind and the broadcast channel of second kind, the broadcast channel of second kind may occupy last three symbols in time slot 1 in the time domain and occupy the center of the band in the frequency domain.
  • Fig. 4 presents 12 RBs in a central frequency band in two time slots of one subframe. The first four symbols in the time domain in 6 RBs in the second time slot are used for carrying the broadcast channel of first kind. The last three symbols in the time domain in the 6 RBs in the second time slot are used for carrying broadcast channel of second kind, wherein, resources elements occupied by the broadcast channel of second kind are 214 REs.
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind, and can be compatible to the original broadcast channel.
  • the second control channel may include: control channel resources elements of preset number.
  • the processing unit is specifically used for determining a first number of the control channel resources units required by carrying the control information for the electronic apparatus of second kind and mapping the control information for the electronic apparatus of second kind to the second control channel including the control channel resources units of the first number.
  • manners of determining the first number of the control channel resources elements required by carrying the control information for the electronic apparatus of second kind may have the following two kinds.
  • initial values of the first number of the control channel resources elements may be set to 1, and the first number may be adjusted to 2 after receiving information of erroneous receipt feedback by the electronic apparatus of second kind.
  • the processing unit is specifically used for acquiring channel quality indication information transmitted by the electronic apparatus of second kind, and determining the first number of the control channel resources units required by carrying the control information for the electronic apparatus of second kind based on the channel quality indication information.
  • the first number of the control channel resource may refer to a polymerization degree of the CCE.
  • the quality indication information may be information feedback by the electronic apparatus of second kind according to status of receiving the reference signal. If the electronic apparatus of second kind starts to decode that of higher CQI level (better corresponding downlink channel) by adopting lower polymerization degree of CCE according to current calculated CQI information, times of blind decode can be reduced.
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind, and can be compatible to the original broadcast channel.
  • the information generating unit is specifically used for treating at least one piece of information of paging information, system information block, random access response information and downlink control information corresponding to the electronic apparatus of second kind as the control information for the electronic apparatus of second kind.
  • the downlink control information corresponding to the electronic apparatus of second kind can be used to provide specific control information for each of different electronic apparatus of second kind to obtain position information of other channels corresponding thereto.
  • the system information block can be used to search system information block (SIB) 1 and control information corresponding to SIB2.
  • SIB system information block
  • Random access response information can be used to indicate the allocation of resource in an uplink of the electronic apparatus of second kind accessed randomly.
  • the paging information can be used to indicate an identification list of the electronic apparatus of second kind paged by the base station; since a length of the paging information is relatively small, the paging information no longer needs to be mapped to a physical downlink shared channel, so as to be able to avoid the electronic apparatus of second kind searching the paging information in the PDSCH once more, thus, the power consumption of the electronic apparatus of second kind can be further reduced.
  • control channel resources elements it is necessary to determine information of the first number of the control channel resources elements to be downlink control information corresponding to each of the electronic apparatus of second kind according to the channel quality indication information of the electronic apparatus of second kind, and other several kinds of information is transmitted by using fixed number of the control channel resources elements generally.
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search the control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind, and can be compatible to the original broadcast channel.
  • the embodiment further provides an electronic apparatus which is an electronic apparatus of second kind different from an electronic apparatus of first kind, and the bandwidth supported by the electronic apparatus of first kind is no more than a first bandwidth, and the bandwidth supported by the electronic apparatus of second kind is no more than a second bandwidth which is less than the first bandwidth, and as show in Fig. 11, the electronic apparatus includes: a communication unit 1101 for accessing to a second control channel, wherein, the second control channel is different from a first control channel, and the first control channel is used for providing control information for the electronic apparatus of first kind, and the second control channel is used for providing control information for the electronic apparatus of second kind; an information processing unit 1102 for acquiring corresponding control information from the second control channel.
  • the electronic apparatus of first kind may be a common mobile terminal, and the first band width may be 20M, and generally, the electronic apparatus of first kind may support a communication band width of 1.4M, 5M, 10M, 15M and 20M or the like.
  • the electronic apparatus of second kind may be a machine type communication (MTC) terminal, and correspondingly, the second band width only can be 1.4M.
  • MTC machine type communication
  • the electronic apparatus of second kind can determine the second control channel for the electronic apparatus of second kind specifically, and map the control information for the electronic apparatus of second kind to the second control channel and transmit the control information to the electronic apparatus of second kind.
  • the electronic apparatus of second kind with less band width is only required to search the control information from the second control channel, so as to reduce a searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption of the electronic apparatus of second kind.
  • the information processing unit is further used for acquiring resource management information for the electronic apparatus of second kind from a broadcast channel, wherein, the resource management information is used for indicating location of resource of the second control information and accessing to corresponding resource according to the resource management information.
  • locations of resource of the second control information may be: locations of symbols with same frequency domain and different time domain with respect to each location of resource for the electronic apparatus of second kind; for example, as shown in Fig. 3, the location of resource of the second control information may be set at the fourth, the fifth and the sixth symbol, which is in same frequency domain and in previous one time slot in time domain with respect to a resource 31 for the electronic apparatus of second kind. It assumes that the resource 31 for the electronic apparatus of second kind is located at the second time slot in subframe 0, then the second control information is located at the fourth, the fifth and the sixth symbol in the first time slot of subframe 0.
  • the broadcast channels can be divided into broadcast channels of first kind and broadcast channels of second kind, wherein, the broadcast channels of first kind are used for providing system information for at least N electronic apparatus of first kind, and the broadcast channels of second kind are used for providing the resource management information for M electronic apparatus of second kind.
  • the broadcast channel of first kind may be a physical broadcast channel (PBCH) for mainly carrying system information, that is, a master information block (MIB) , which is updated every 40ms and retransmitted every 10ms.
  • PBCH physical broadcast channel
  • MIB master information block
  • the PBCH is transmitted in time slot 1 of subframe 0, and in the frequency domain, the PBCH occupies a frequency bandwidth of 1.25M.
  • the broadcast channels of second kind may occupy same band width as the PBCH in the frequency domain, and is transmitted at a location occupying different symbols from the PBCH in time slot 1 of subframe 0 in the time domain.
  • Fig. 4 presents a divisional relationship in the time domain and the frequency domain of the broadcast channels of first kind and the broadcast channels of second kind, the broadcast channels of second kind may occupy last three symbols in time slot 1 in the time domain and occupy a location in the center of the band in the frequency domain.
  • Fig. 4 presents 12 RBs in a central frequency band in two time slots of one subframe. The first four symbols in the time domain in 6 RBs in the second time slot are used for carrying the broadcast channels of first kind. The last three symbols in the time domain in the 6 RBs in the second time slot are used for carrying broadcast channels of second kind, wherein, resources elements occupied by the broadcast channels of second kind are 214 REs.
  • the communication unit is specifically used for determining channel quality indication information based on received reference signal.
  • the information processing unit is specifically used for determining a first number of the control channel resources units according to the channel quality indication information, and parsing to obtain the control information from the second control channel based on the first number of the control channel resources units.
  • Determining channel quality indication information based on the received reference signal may be: after receiving the reference signal (RS) by the electronic apparatus of second kind, determining a received power of reference signal according to the RS, and in turn determining the channel quality indication information according to the received power of reference signal.
  • RS reference signal
  • the electronic apparatus of second kind can determine the first number of the control channel resources elements according to the currently calculated channel quality indication information, and in turn parse the control information according to the determined first number.
  • the first number of the control channel resources elements may be a polymerization degree of CCE.
  • the information processing unit is specifically used for parsing to obtain at least one piece of information of the following from the control information: paging information, system information block, random access response information and downlink control information corresponding to the electronic apparatus of second kind.
  • Fig. 8 search directions in the time domain and the frequency domain of the control information can be shown in Fig. 8, that is, a direction in the time domain from early to late in time, and a direction in the frequency domain from high to low in frequency.
  • control channel resources elements it is necessary to determine the information of the first number of the control channel resources elements to be downlink control information corresponding to each of the electronic apparatus of second kind according to the channel quality indication information of the electronic apparatus of second kind, and other several kinds of information is transmitted by using fixed number of control channel resources elements generally.
  • a number of the control channel resources elements with respect to each kind of information can be shown as following table:
  • Step 901 acquiring CQI by the electronic apparatus of second kind firstly.
  • Step 902 deciding whether the CQI is larger than a threshold, wherein, the threshold can be set as a matter of experience, for example, can be set as 8, i.e., CQI>8, which illustrates that a quality of the downlink channel of a UE is good, a polymerization degree is 1, and efficiency is high; otherwise, it illustrates that the quality of the downlink channel of the UE is not so good, the polymerization degree is 2, and it can be transmitted by using an encoding mode of lower code rate, which ensures that the UE can receive information of the PDCCH correctly.
  • step 903 is executed; otherwise, step 906 is executed.
  • Step 903 providing an extracting pointer to extract a single CCE to decode according to search directions.
  • Step 904 checking the extracted CCE by using a scrambling code itself to decide whether the checking is successful, and if it is successful, it determines that the control information (DCI) is acquired successfully, and a processing flow ends; otherwise, step 905 is executed.
  • DCI control information
  • Step 905 deciding whether the extracting pointer extracted currently has already pointed to an end of the second control channel, and if the current extracting pointer has already pointed to the end of the second control channel, it determines that acquisition of DCI fails, and the processing flow ends; otherwise, it returns to step 903.
  • Step 906 setting an extracting pointer to extract two CCEs to decode according to the searching directions.
  • Step 907 checking the extracted two CCEs by using the scrambling code itself to decide whether the checking is successful, if it is successful, it determines that the control information (DCI) is acquired successfully, and the processing flow ends; otherwise, step 908 is executed.
  • DCI control information
  • Step 908 deciding whether the current extracting pointer has already pointed to the end of the second control channel, and if the current extracting pointer has already pointed to the end of the second control channel, it determines that the acquisition of the DCI fails, and the processing flow ends; otherwise, it returns to step 906.
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search the control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind , and can be compatible to the original broadcast channel.
  • the embodiment further provides an information processing system, as shown in Fig. 12, the information processing system includes: a base station 1201 for determining a second control channel different from a first control channel, wherein, the first control channel is used for providing control information for an electronic apparatus of first kind, and the second control channel is used for providing control information for an electronic apparatus of second kind, and the bandwidth supported by the electronic apparatus of first kind is no more than a first bandwidth, and the bandwidth supported by the electronic apparatus of second kind is no more than a second bandwidth which is less than the first bandwidth; generating control information for the electronic apparatus of second kind; mapping the control information for the electronic apparatus of second kind to the second control channel; and transmitting the corresponding control information to the electronic apparatus of second kind through the second control channel; an electronic apparatus 1202 for accessing to a second control channel and acquiring corresponding control information from the second control channel.
  • the first control channel may be a physical downlink control channel (PDCCH) for mainly carrying dispatch and other control information, which may specifically include information of transmission format, allocation of resource, uplink dispatch permission, power control and uplink retransmission or the like.
  • PDCCH is defined with: resource element group (RE Group, REG) and control channel element (CCE) . Wherein, one CCE is constituted of nine REGs.
  • the electronic apparatus of first kind may be a common mobile terminal, and the first band width may be 20M, and generally, the electronic apparatus of first kind may support a communication band width of 1.4M, 5M, 10M, 15M and 20M or the like.
  • the electronic apparatus of second kind may be a machine type communication (MTC) terminal, and correspondingly, the second band width only can be 1.4M.
  • MTC machine type communication
  • the control information for the electronic apparatus of second kind can be mapped to the second control channel and the control information can be transmitted to the electronic apparatus of second kind.
  • the electronic apparatus of second kind supporting less band width can search the control information from the second control channel, so as to reduce the searching complexity of the electronic apparatus of second kind, and in turn reduce a power consumption and latency of the electronic apparatus of second kind.
  • the disclosed apparatus and method can be implemented by other means.
  • the above-described embodiment of the apparatus is only schematic, for example, the division of the units is only a logical functional division, and there can be other manners of division in the actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be neglected or are not implemented.
  • coupling or direct coupling or communication connection between the respective constituent parts shown or discussed may be indirect coupling or communication connection through some interfaces, apparatus or units, and may be electrical, mechanical or other forms.
  • components shown as units may be or may not be physical units, that is, they may be positioned at one place, or may be distributed onto a plurality of network units, or a part or all of the unit therein can be selected according to actual requirement to implement purposes of the solutions of the embodiments.
  • all of the respective functional units in the embodiments can be integrated into one processing module; or the respective units exists as one unit respectively; or two or more units are integrated into one unit; the above -described integrated units can be implemented in form of hardware or in form of hardware plus software functional unit.
  • a part or all of steps for implementing the above-described embodiment of method can be implemented by hardware related to programmed instruction, and aforementioned program may be stored in a computer readable storage medium, and executes steps including the above-described embodiment of method at the time of being executed; and aforementioned storage medium includes: media which is able to store program code such as a portable storage apparatus, a read-only memory (ROM) , a random access memory (RAM) , a magnetic disk or an optical disk or the like.
  • ROM read-only memory
  • RAM random access memory

Abstract

La présente invention concerne un procédé de traitement d'informations, une station de base, un appareil et un système électronique, le procédé comprend : l'acquisition des informations de commande destinées à un appareil électronique du second type et l'appareil électronique du second type est différent d'un appareil électronique du premier type et la bande passante prise en charge par l'appareil électronique du premier type n'est pas supérieure à une première bande passante et la bande passante prise en charge par l'appareil électronique du second type n'est pas supérieure à une seconde bande passante qui est inférieure à la première bande passante; la mise en correspondance des informations de commande destinées à l'appareil électronique du second type avec un second canal de commande et le second canal de commande est différent d'un premier canal de commande qui est destiné à la fourniture des informations de commande destinées à l'appareil électronique du premier type; et la transmission des informations de commande à l'appareil électronique du second type à travers le second canal de commande.
PCT/CN2015/089267 2015-03-30 2015-09-09 Procédé de traitement d'informations, station de base, appareil et système électronique WO2016155245A1 (fr)

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