Classifications

• • 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
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W28/00—Network traffic management; Network resource management
  • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
  • H04W28/18—Negotiating wireless communication parameters
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W72/00—Local resource management

Definitions

• the embodiments of the present invention relate to a communication system, and in particular, to a communication method and system, a user equipment, and a network side device.
• LTE Long Time Evolution
• UE User Equipment
• SSS Primary Synchronization Signal
• PBCH Physical Broadcast Channel
• PDCCH Physical Downlink Control Channel
• CRS Cell-specific Reference Signal
• each slot For a normal Cyclic Prefix (CP) or a short CP scenario, each slot includes 7 orthogonal frequencies. Orthogonal Frequency Division Multiplexing (OFDM) symbols, and for extended CP or long CP scenes, each slot includes 6 OFDM symbols.
• the minimum time unit scheduled by the base station is one subframe, and the UE detects the PDCCH in the control region of one subframe, the control region occupies the first n OFDM symbols of one subframe, and n is a natural number of 1 to 4.
• the transmission period of the PBCH is one radio frame, and the time domain location is located in six resource blocks in the carrier center.
• the transmission period of the PSS and the SSS is five subframes, and the frequency position is located in six resource blocks in the carrier center, and the time domain thereof Position
• FDD Frequency Division Duplexing
• the PSS is located in the last OFDM symbol of the first slot of the first and sixth subframes of a radio frame
• the SSS is located in the first and the first of a radio frame.
• the second trever OFDM symbol of the first slot of the six subframes; for the ime Division Duplexing (TDD) system the PSS is located in the first slot of the second and seventh subframes of a radio frame
• TDD ime Division Duplexing
• the SSS is located in the last OFDM symbol of the second slot of the first and sixth subframes of a radio frame.
• a new carrier type will be introduced in version 11 or future versions of the Long Term Evolution Advanced (LTE-A) system, in which the control area will be canceled, therefore, There is no PDCCH on the new carrier type.
• the data scheduling depends on the enhanced PDCCH (ePDCCH).
• the ePDCCH and the downlink data channel can occupy one subframe in time and occupy the resource block in the frequency domain.
• the time domain density or frequency domain density of the CRS may be reduced on the new carrier type, for example, the CRS needs to be transmitted without using every subframe or all frequency bands.
• how the UE in the LTE Release 11 or a future version of the LTE system determines whether the carrier is a new carrier type is an urgent problem to be solved. Summary of the invention
• the embodiment of the present invention provides a communication method and system, a user equipment, and a network side device, which are used by the user equipment to identify the type of the current carrier, that is, the current carrier is identified as the first type of carrier.
• the user equipment UE acquires first information that is sent by the network side device in the current carrier, where the first information is used to indicate the type of the current carrier;
• the network side device determines the first information, where the first information is used to indicate the type of the current carrier, and the network side device sends the first information to the user equipment in the current carrier.
• the user equipment in the design example of the present invention includes:
• An acquiring unit configured to acquire first information that is sent by the network side device in the current carrier, where the first information is used to indicate that the type of the carrier is used;
• a determining unit configured to determine, according to the first information, a type of the current carrier after the acquiring unit acquires the first information.
• a setting unit configured to determine first information, where the first information is used to indicate a type of the current carrier, and the sending unit is configured to send the first information to the user equipment in the current carrier.
• the communication system in the embodiment of the present invention includes: User equipment and network side equipment.
• the embodiments of the present invention have the following advantages:
• the UE acquires the first information sent by the network side device in the current carrier, determines the type of the current carrier according to the first information, and can effectively identify the type of the current carrier.
• FIG. 1 is a schematic diagram of an embodiment of a communication method according to an embodiment of the present invention.
• FIG. 2 is another schematic diagram of an embodiment of a communication method according to an embodiment of the present invention.
• FIG. 3 is another schematic diagram of an embodiment of a communication method according to an embodiment of the present invention.
• FIG. 4 is another schematic diagram of an embodiment of a communication method according to an embodiment of the present invention.
• FIG. 5 is another schematic diagram of an embodiment of a communication method according to an embodiment of the present invention.
• FIG. 6 is another schematic diagram of an embodiment of a communication method according to an embodiment of the present invention.
• FIG. 7 is another schematic diagram of an embodiment of a communication method according to an embodiment of the present invention.
• FIG. 8 is another schematic diagram of an embodiment of a communication method according to an embodiment of the present invention.
• FIG. 9 is a schematic diagram of a structure of a user equipment according to an embodiment of the present invention.
• FIG. 10 is another schematic diagram of a structure of a user equipment according to an embodiment of the present invention.
• FIG. 11 is a schematic diagram showing the structure of a network side device according to an embodiment of the present invention.
• FIG. 12 is another schematic diagram of a structure of a network side device according to an embodiment of the present invention.
• Figure 13 is a schematic diagram showing the structure of a communication system in an embodiment of the present invention.
• the embodiment of the invention provides a communication method and system, a user equipment, and a network side device, which are used for the user equipment to identify the carrier transmitted by the network side device, so that the user equipment can access the network and implement data transmission.
• the network side device can send
• the first type of carrier is different from the carrier in the LTE system in LTE Release 8/9/10.
• the time domain density or frequency domain density of the CRS may be reduced on the first type of carrier, for example, CRS is not required to be transmitted per subframe or all bands.
• FIG. 1 is a An embodiment of a communication method in the embodiment includes:
• the user equipment acquires first information that is sent by the network side device in the current carrier.
• the UE acquires first information that is sent by the network side device in the current carrier, and the first information may be used to indicate the type of the current carrier.
• the user equipment determines, according to the first information, a type of the current carrier.
• the UE determines the type of the current carrier according to the first information, where the current carrier may be the first type of carrier.
• the UE determines the type of the current carrier by acquiring the first information of the current carrier that is sent by the network side device, so that the UE can effectively identify the current carrier, and the UE can access the network side to implement data transmission.
• the first type of carrier refers to a carrier that is different from the carrier type in the LTE version 8/9/10 system.
• the first type of carrier has no control region and PDCCH, and the data scheduling depends on the ePDCCH.
• the time domain density or frequency domain density of the CRS may be reduced on the first type of carrier, for example, CRS is not required to be transmitted per subframe or all bands.
• FIG. 2 is an embodiment of a communication method according to an embodiment of the present invention, including:
• the user equipment acquires any one of radio resource control information, a physical broadcast channel, and a system information block that are sent by the network side device in the current carrier.
• the user equipment acquires first information that is sent by the network side device in the current carrier, where the first information includes Radio Resource Control (RRC) information and Physical Broadcast Channel (Physical Broadcast) in the current carrier.
• RRC Radio Resource Control
• Physical Broadcast Channel Physical Broadcast
• CHannel, PBCH Any of the information, System Information Blocks.
• the user equipment determines that the current carrier type is the first type carrier according to the first information, that is, determines that the current carrier is the first type carrier according to any one of the RRC information, the PBCH information, and the SIB.
• the UE obtains and parses the RRC information sent by the network side device, and the UE obtains the identifier of the carrier type from the RRC information, where the identifier may determine that the current carrier is the first type carrier or the traditional LTE carrier, and the traditional LTE carrier may be LTE. Carrier in the LTE system of Release 8/9/10.
• the UE may access the LTE system through a traditional carrier, and perform steps including synchronization, reading system messages, random access, establishing an RRC connection, and the like, and then the network side device may send an RRC information to the UE.
• the RRC information adds a carrier to the UE, that is, in addition to the current carrier accessed by the UE, the RRC information is used to reconfigure a carrier for the UE, which may be based on the data volume requirement of the UE, such as the UE.
• the UE can obtain the type of the added carrier by using the RRC information, and the type of the added carrier can be identified by the identifier bit, and the system presets one of the carriers.
• the identifier is identified as the carrier of the first type of carrier, and therefore, the UE can determine the type of the carrier according to the RRC information.
• the UE determines the carrier type of the current carrier according to the PBCH information, and specifically includes:
• the UE can read the PBCH information on the current carrier, for example, the bit in the PBCH indicating that the current carrier is the first type of carrier, or the cyclic redundancy of the PBCH.
• a Cyclical Redundancy Check (CRC) mask, or a PBCH de-rate matching information is detected to determine that the current carrier is a first type of carrier.
• the bit in the PBCH may be an existing bit in the PBCH, and the existing bit is used as the identifier to identify the type of the current carrier, or may be a bit added in the PBCH, and the newly added bit is used as the identifier bit.
• the current carrier is identified as a conventional carrier.
• the UE determines that the current carrier is the first type of carrier. If it is 0, it determines that the current carrier is a legacy carrier. If the rate-matching information is used as an example, for a legacy carrier, the UE demodulates the PBCH through the CRS. For example, the UE always assumes four CRS antenna ports to demodulate the PBCH, that is, the de-rate matching is assumed to deduct 4 ports. The location of the CRS is then determined by the CRC check to determine whether the demodulation is correct. For the first type of carrier, the UE may demodulate the PBCH by using a UE-specific reference signal (UES), which may be distributed in the PBCH region.
• UES UE-specific reference signal
• the UE needs to deduct the location of the UERS when de-rate matching, and then determine whether the demodulation is correct by the CRC check; and because of the CRS and UERS The location of the carrier is different, so the carrier type of the current carrier can be determined by the resource locations of the CRS and UERS subtracted from the above-described de-rate matching.
• the UE determines the carrier type of the current carrier according to the SIB information, and specifically includes:
• the UE After the UE synchronizes with the LTE carrier by detecting the synchronization channel, the UE can read the SIB information, and the UE can obtain the identifier of the carrier type from the SIB information, where the identifier can determine that the current carrier is the first type carrier or the traditional LTE carrier.
• a conventional LTE carrier may be a carrier in an LTE system of LTE Release 8/9/10.
• the UE may determine the type of the current carrier according to the manner in which the SIB message is detected, such as which reference signal, CRS or UERS. Specifically, if the SIB of the PDCCH scheduling is detected by the PDCCH based on the CRS demodulation, it is determined that the current carrier is a legacy carrier; if the SIPDCCH of the ePDCCH scheduling is detected by the EPDCCH based on the UERS demodulation, determining that the current carrier is the first Type carrier.
• the user equipment determines information about the first time-frequency resource that carries the primary synchronization signal and the secondary synchronization signal on the first type of carrier.
• the user equipment may send information about time-frequency resources of the PSS and the SSS through a predefined network-side device or may receive a time-frequency of transmitting the PSS and the SSS by the network-side device notified by the network-side device by the high-layer signaling. Resource information.
• the network side device may be a base station or a radio network controller.
• the user equipment after determining that the current carrier is the first type of carrier, the user equipment further determines information about the first time-frequency resource of the PSS and the SSS on the first type of carrier, where the information of the first time-frequency resource may be It is pre-defined, and may also be configured by the network side device to the UE through signaling.
• the information of the first time-frequency resource includes the third OFDM symbol of the first subframe of the radio frame in which the PSS is located in the third orthogonal frequency division multiplexing OFDM symbol of the first subframe of the radio frame.
• the information of the first time-frequency resource includes the third OFDM symbol of the second subframe of the radio frame of the PSS, and the SSS is located in the second OFDM symbol of the second subframe of the radio frame, where the first time
• the location of PSS and SSS in the frequency resource information can be applied to both FDD and TDD systems, and It can be applied to both LTE and extended LTE LTE systems.
• the location can also effectively avoid the CRS, PBCH, port 5 and ports 7 to 14 UERS and channel state information-reference signal (CSI-RS) on the first type of carrier, so that the above reference signals are It can be sent normally without being destroyed, which improves the performance of the system.
• CSI-RS channel state information-reference signal
• the design cancels the PSS in the TDD system in the special subframes of the TDD system, namely the 2nd and 7th subframes, so that the special sub- The frame can be completely turned off without data transmission, so as to achieve the power saving effect of the network side device.
• FDD and TDD adopt the same PSS and SSS time-frequency resource locations on the first type of carrier.
• the information of the first time-frequency resource may also be:
• the PSS is located in the third OFDM symbol of the first subframe of the radio frame and the SSS is located in the second OFDM of the first subframe of the radio frame.
• the PSS is located in the 3rd OFDM symbol of the 2nd subframe of the radio frame and the SSS is located in the 2nd OFDM symbol of the 2nd subframe of the radio frame, so that the position of the PSS in the TDD system is not modified.
• the differentiation of the FDD and TDD systems can be continued to be utilized to distinguish the FDD and TDD systems by utilizing the differentiated design and the positional relationship of the PBCH.
• the information of the first time-frequency resource may also be that the PSS is located in the fourth OFDM symbol of the first subframe of the radio frame, and the SSS is located in the third OFDM symbol of the first subframe of the radio frame, or the PSS is located.
• the 4th OFDM symbol of the 1st subframe of the radio frame and the SSS is located in the 2nd OFDM symbol of the 1st subframe of the radio frame, or the PSS is located in the 2nd OFDM symbol of the 2nd subframe of the radio frame and the SSS is located in the wireless
• the first OFDM symbol of the second subframe of the frame, or the PSS is located in the third OFDM symbol of the second subframe of the radio frame and the SSS is located in the first OFDM symbol of the second subframe of the radio frame.
• the user equipment performs subframe synchronization on the first type of carrier according to the obtained information of the first time-frequency resource.
• the user equipment may determine that the current carrier is the first type carrier according to any one of the RRC information, the PBCH information, and the SIB in the current carrier, and obtain the first time frequency of the first type carrier.
• the information of the resource is used to perform subframe synchronization on the first type of carrier according to the information of the first time-frequency resource, so that the user equipment can identify the type of the current carrier and implement data transmission.
• the change of the information of the time-frequency resources of the PSS and the SSS of the first type of carrier relative to the information of the time-frequency resources of the conventional carrier can solve the conflict between the PSS, the SSS and the UERS, so that the PSS and the SSS are transmitted without the need to drop the UERS, and the optimization The transmission efficiency of the system.
• the information of the first time-frequency resource of the PSS and the SSS on the first type of carrier mentioned in the embodiment of the present invention only describes the position of the first half of the radio frame, and the PSS and the SSS are in the first
• the transmission period on a type of carrier is 5 milliseconds, that is, 5 subframes, so the information of the time-frequency resources of the PSS and the SSS in the second half of the radio frame is not described, but actually the time of the PSS and the SSS in the second half of the subframe
• the information of the frequency resource i.e., the location of the PSS and the SSS
• the frequency resource i.e., the location of the PSS and the SSS
• the UE may also determine the CP type of the current carrier, that is, the normal CP or the extended CP, by detecting the relative positional relationship between the PSS and the SSS, and determining whether the current carrier includes 7 subframes in one subframe. 6 OFDM symbols.
• the relative positions mentioned in the present invention differ by a few symbols, which are all for the scenario of a normal CP, and the method for extending the CP is similar. The following embodiments are also the same, and the present invention will not be described again.
• the first information carried in the current carrier for indicating the type of the current carrier may further include the detected relative positional relationship between the PSS and the SSS of the current carrier, which will be described in detail below.
• the manner in which the user equipment identifies the current carrier is an embodiment of a communication method according to an embodiment of the present invention, including:
• the user equipment acquires a relative position relationship between a primary synchronization signal and a secondary synchronization signal sent by the network side device in the current carrier.
• the user equipment acquires a relative positional relationship between the PSS and the SSS sent by the network side device in the current carrier.
• the relative positional relationship between the PSS and the SSS may be preset, and the network side device sets the relative positional relationship between the corresponding PSS and the SSS according to the type of the carrier to be transmitted.
• the relative positional relationship between the preset PSS and the SSS is defined by at least one relative positional relationship between the PSS and the SSS as the first type of carrier, in addition to the two relative positional relationships between the FDD and the TDD system in the current conventional carrier.
• the relative positional relationship between PSS and SSS for example, for the first type of carrier, the relative positional relationship in the FDD system is the OFDM symbol and SSS of the PSS.
• the OFDM symbols differ by 1 OFDM symbol
• the relative positional relationship in the TDD system is that the OFDM symbol of the PSS and the OFDM symbol of the SSS differ by 3 OFDM symbols, and both are OFDM symbols of the OFDM symbol of the PSS in the SSS. after that.
• the relative positional relationship between the PSS and the SSS in the first type of carrier may be different from the two existing location relationships, for example, the symbol interval between the OFDM symbol of the PSS and the OFDM symbol of the SSS may be changed. Or changing the OFDM symbol of the PSS and the symbol order of the OFDM symbols of the SSS, and the like.
• the user equipment determines that the current carrier is the first type of carrier according to the relative positional relationship between the PSS and the SSS, where the relative positional relationship between the PSS and the SSS on the first type of carrier is in addition to the first relative positional relationship.
• External positional relationship, and the first relative positional relationship is that the OFDM symbol of the PSS is adjacent to the OFDM symbol of the SSS and the OFDM symbol of the SSS is in front of the OFDM symbol of the PSS in the time domain, or the OFDM symbol of the PSS and the OFDM symbol of the SSS Two OFDM symbols are separated and the OFDM symbol of the SSS is in front of the OFDM symbol of the PSS in the time domain.
• the first relative positional relationship in the embodiment of the present invention includes two types of FDD and TDD systems in the conventional carrier.
• the relative positional relationship between the PSS and the SSS In the FDD system, the PSS in the legacy carrier is located in the 7th OFDM symbol of the first slot of the 1st subframe of the radio frame and the SSS is located in the 1st subframe of the radio frame.
• the sixth OFDM symbol of one slot, in the TDD system, the PSS in the legacy carrier is located in the third OFDM symbol of the first slot of the second subframe of the radio frame and SS S is located in the seventh OFDM symbol of the second slot of the first subframe of the radio frame.
• the relative positional relationship between the PSS and the SSS on the predefined first type of carrier is 1 symbol between the OFDM symbol of the PSS and the OFDM symbol of the SSS, but the OFDM symbol of the PSS in the time domain is in the OFDM of the SSS. Before the symbol.
• the UE detects three predefined PSS and SSS relationships (the relative positional relationship between PSS and SSS in the FDD and TDD systems in the legacy carrier, and the relative positional relationship between the PSS and the SSS in the first type of carrier), if detected at the current
• the OFDM symbol of the PSS in the carrier is adjacent to the OFDM symbol of the SSS and the OFDM symbol of the PSS is behind the OFDM symbol of the SSS, then the UE determines that the current carrier is a conventional FDD carrier; if the OFDM symbol of the PSS is detected and the OFDM symbol of the SSS is detected After 2 OFDM symbols are separated and the OFDM symbol of the PSS is behind the OFDM symbol of the SSS, the UE determines that the current carrier is a legacy TDD carrier; if detected The OFDM symbol of the PSS is separated from the OFDM symbol of the SSS by 1 OFDM symbol and the OFDM symbol of the PSS is in front of the OFDM symbol of the SSS, and the UE determines that the current carrier
• the user equipment determines information about a second time-frequency resource that carries a primary synchronization signal and a secondary synchronization signal on the first type of carrier.
• the user equipment determines information about the second time-frequency resource that carries the PSS and the SSS on the first type of carrier, where the information of the second time-frequency resource includes the PSS located in the first subframe of the radio frame.
• the information of the second time-frequency resource includes the PSS located in the first subframe of the radio frame. 4 OFDM symbols and the SSS is located in the 2nd OFDM symbol of the 1st subframe of the radio frame, or the PSS is located in the 3rd OFDM symbol of the 2nd subframe of the radio frame and the SSS is located in the 1st subframe of the 2nd subframe of the radio frame OFDM symbols.
• the user equipment performs subframe synchronization on the first type of carrier according to the acquired information of the second time-frequency resource.
• the current carrier is determined to be the first type carrier according to the relative positional relationship between the PSS and the SSS of the current carrier, and the subframe synchronization is performed by using the information of the PSS of the first type carrier and the second time-frequency resource of the SSS.
• the user equipment can effectively identify the type of the current carrier and implement data transmission.
• the information of the time-frequency resources of the PSS and SSS of the first type carrier can be resolved with respect to the position of the traditional carrier, and the PSS, SSS and UERS can be solved.
• the conflict causes the network side device to carry the PSS and the SSS in the current carrier without dropping the UERS, thereby optimizing the transmission efficiency of the system.
• the user equipment may further determine the type of the current carrier according to the first information, as shown in FIG. 4
• An embodiment of a communication method in the embodiment of the present invention includes:
• the user equipment acquires a relative position relationship between the primary synchronization signal and the secondary synchronization signal sent by the network side device in the current carrier, and physical broadcast channel information.
• the user equipment acquires a relative positional relationship and PBCH information of the PSS and the SSS sent by the network side device in the current carrier, where the PBCH information includes the time frequency of the PBCH.
• the location information, any one of the PBCH indicating the current carrier is the first type of carrier, the CRC mask, the cell-specific reference signal of the PBCH, and the de-rate matching information of the UE-specific reference signal.
• the relative positional relationship between the PSS and the SSS in the carrier may be predefined.
• the relative positional relationship between the PSS and the SSS of the first type carrier in the embodiment of the present invention is different from the PSS in the traditional carrier.
• the relative positional relationship with SSS can also be the same.
• the time-frequency position information of the PBCH information is predefined, and preferably, the time-frequency position information of the PBCH information of the first type carrier and the time of the PBCH information in the legacy carrier in the embodiment of the present invention
• the frequency location information may be the same, that is, the first four OFDM symbols of the second slot of the first subframe of the radio frame, where the bits in the PBCH are OFDM symbols in which the UE detects PBCH information and parsing the PBCH information.
• the obtained CRC mask of the PBCH information is predefined. Specifically, the CRC of the PBCH information can be descrambled by using a plurality of predefined masks.
• the PBCH can be correctly demodulated. Then, it is determined that the CRC mask currently used by the UE is correct, and the de-rate matching information of the CRS or UERS of the PBCH is predefined. For the legacy carrier, the UE demodulates the PBCH by using the CRS, and the UE can assume four CRS antenna ports.
• the UE may demodulate the PBCH by using the UERS, and the UERS may be distributed in the PBCH area, that is, in the first four OFDM symbols of the second time slot of the first subframe. At this time, the UE needs to deduct the position of the UERS when the rate is matched, and judge whether the demodulation is correct by the CRC check.
• the user equipment determines that the current carrier is the first type carrier according to the relative positional relationship between the PSS and the SSS and the PBCH information.
• the relative positional relationship between the PSS and the SSS of the first type carrier is the same as the relative positional relationship between the PSS and the SSS of the legacy carrier, and the time-frequency resource information of the PSS and the SSS of the first type carrier
• the time-frequency resource information of the legacy carrier is different.
• the PSS and the SSS in the first type of carrier are respectively located in the third OFDM symbol of the first subframe of the radio frame.
• the method for determining the type of the current carrier according to the relative positional relationship between the PSS and the SSS and the time-frequency position information of the PBCH in the PBCH information is used as an example: when the UE detects the relative positional relationship between the PSS and the SSS of the current carrier and the conventional carrier in the FDD When the relative positional relationship between the PSS and the SSS in the system is the same, if the OFDM symbol of the PSS is detected to be adjacent to the OFDM symbol of the PBCH, and the OFDM symbol of the PSS is in front of the OFDM symbol of the PBCH, the UE determines that the current carrier is the traditional FDD.
• the UE determines that the current carrier is a conventional TDD carrier; when the UE detects the relative positional relationship between the PSS and the SSS of the current carrier and the legacy carrier in the FDD system
• the UE determines the current carrier as the carrier of the first type.
• the user equipment determines information about a third time-frequency resource that carries the PSS and the SSS on the first type of carrier.
• the user equipment determines information of the third time-frequency resource that carries the PSS and the SSS on the first type of carrier, where the third time-frequency resource information Included that the PSS is located in the third OFDM symbol of the first subframe of the radio frame and the SSS is located in the second OFDM symbol of the first subframe of the radio frame, or the PSS is located in the third OFDM symbol of the second subframe of the radio frame and The SSS is located in the second OFDM symbol of the second subframe of the radio frame, and the information of the third time-frequency resource of the current carrier can be simultaneously applied to the setting of the time-frequency resource information of the PSS and the SSS in the FDD and TDD systems.
• the PSS in the TDD system enables the special subframe to be completely turned off without data transmission, that is, the downlink of the network side device is turned off, so as to achieve the power saving effect of the network side device.
• FDD and TDD adopt the same PSS and SSS time-frequency resource locations on the first type of carrier.
• the UE accesses the LTE system, the UE reduces the position hypothesis of detecting PSS and SSS, and improves the synchronization performance.
• the information of the third time-frequency resource in the embodiment of the present invention may also be:
• the PSS is located in the third OFDM symbol of the first subframe of the radio frame and the SSS is located in the first subframe of the radio frame.
• the PSS is located in the 3rd OFDM symbol of the 2nd subframe of the radio frame and the SSS is located in the 2nd OFDM symbol of the 2nd subframe, so that the position of the PSS in the TDD system is not modified
• the differentiation between the FDD and the TDD system can be further maintained to utilize the differentiation and the positional relationship of the PBCH to jointly distinguish the FDD and the TDD system.
• the information about the third time-frequency resource in the embodiment of the present invention may also be that the PSS is located in the fourth OFDM symbol of the first subframe of the radio frame and the SSS is located in the third OFDM of the first subframe of the radio frame.
• the symbol, or the PSS is located in the 3rd OFDM symbol of the 2nd subframe of the radio frame and the SSS is located in the 2nd OFDM symbol of the 2nd subframe, or the PSS is located in the 2nd OFDM symbol of the 2nd subframe of the radio frame and the SSS The first OFDM symbol located in the second subframe of the radio frame.
• the user equipment performs subframe synchronization on the first type of carrier according to the information of the third time-frequency resource.
• the current carrier is determined to be the first type carrier according to the relative position relationship between the PSS and the SSS and the PBCH information, and if the current carrier is the first type carrier, the third time-frequency resource of the PSS and the SSS is utilized.
• the information is synchronized with the subframe, so that the user equipment can effectively identify the type of the current carrier and implement data transmission.
• the information of the PSS and the third time-frequency resource of the SSS in the first type of carrier can effectively solve the conflict between the PSS, the SSS and the UERS, so that the PSS and the SSS are transmitted without the UERS being dropped, and the transmission efficiency of the system is optimized.
• the solution of this embodiment does not need to introduce a new relative positional relationship between the PSS and the SSS, so the synchronization performance is equivalent to that of the legacy carrier, and there is no need to introduce a bit in the PBCH for indicating that the current carrier is the first type of carrier.
• the CRC mask and other information that is, the PBCH is kept consistent with the legacy carrier, and the carrier type is determined by the relative positional relationship between the PSS, the SSS and the PBCH, and the performance of the PBCH information is guaranteed by the CRC check function.
• the user equipment determines that the current carrier is the first type of carrier, and implements subframe synchronization according to the time-frequency resource information of the PSS and the SSS.
• the duplex type of the first type of carrier may be further determined, specifically:
• the user equipment determines the duplex type of the current carrier according to the relative positional relationship between the PSS and the SSS and the PBCH information;
• a new PSS and SSS relative position relationship is not introduced compared to a conventional LTE carrier, but two new PSS and SSS time-frequency resource locations are introduced, and each new time-frequency resource location and PBCH are introduced.
• the combination of time-frequency resource locations determines a duplex type of the first type of carrier. It is assumed here that the two new PSS and SSS time-frequency resource locations are respectively a first location and a second location, the first location being the third OFDM symbol and the radio frame of the first subframe of the radio frame in which the PSS and the SSS are respectively located.
• the second OFDM symbol of the first subframe, where the second position is the third OFDM symbol of the second subframe of the radio frame and the second OFDM symbol of the second subframe of the radio frame, respectively, the PSS and the SSS, and the other The location is similar.
• the UE can determine the type of the current carrier and determine the duplex type of the current carrier by the relative positional relationship of the PSS, the SSS, and the PBCH.
• the UE determines that the current carrier is a conventional FDD or TDD carrier; when the UE detects the PSS and the SSS The relative positional relationship is the relative positional relationship of the traditional LTE/TDD, and when the PSS and the SSS are combined with the location of the PBCH, the UE determines that the current carrier is the first type of TDD carrier; when the UE detects the relative position of the PSS and the SSS The relationship is the relative positional relationship of the legacy LTE FDD, and when the PSS and the SSS are combined with the location of the PBCH, the UE determines that the current carrier is the first type of FDD carrier.
• the user equipment determines the duplex type of the current carrier according to any one of PBCH information, SIB, and RRC information.
• the duplex type includes FDD and TDD
• the PBCH information includes: time-frequency position information of the PBCH, a bit in the PBCH indicating that the current carrier is the first type of carrier, a CRC mask, a cell-specific reference signal of the PBCH, and a UE. Any one of the solution rate matching information of a particular reference signal.
• the PBCH information is a bit letter in the PBCH for indicating a duplex type of the current carrier.
• Information or bit information indicating that the current carrier is the first type of carrier which may be a new bit in the PBCH, that is, a previously reserved or newly added bit, or reuse a meaningful bit on the legacy carrier in the PBCH, such as reuse.
• Physical HARQ Indicator Channel (PHICH) channel configuration information bits are used to distinguish the current carrier type and/or the duplex type by using the bit information in the PBCH. See the description in this embodiment.
• the UE may jointly determine the first type of carrier by using the PSS, the location relationship between the SSS and the PBCH, and then the UE may read the information in the PBCH that is used to indicate that the current carrier is the first type of carrier.
• the duplex type of the first type of carrier can be determined by the information of the bit, for example, the bit is 0 for FDD, the bit is 1 for TDD, or the bit is 0 for TDD, and the bit is 1 for FDD.
• the FDD and the TDD use the same PSS and SSS time-frequency resource locations on the first type of carrier.
• the UE accesses the LTE system, the UE reduces the position hypothesis of detecting the PSS and the SSS, and improves the synchronization performance.
• the UE may determine that the current carrier is the first type of carrier according to the new relative positional relationship, and then the UE may read the PBCH.
• Bit information in which the duplex type of the first type of carrier can be determined. For example, the bit is 0 for FDD, the bit is 1 for TDD, or the bit is 0 for TDD, and the bit is 1 for FDD.
• duplex type of the first type of carrier is determined by the RRC or the SIB as described in the foregoing embodiment, and details are not described herein again.
• the duplex type of the first type carrier is obtained through information such as PSS, SSS, PBCH, etc., and no additional channel is introduced, which is simple to implement.
• PSS and SSS use the same time-frequency resource location, for example, the third OFDM symbol in the first subframe of the radio frame and the second subframe in the first subframe of the radio frame. OFDM symbols, other locations are similar.
• the FDD and TDD in the method use the same PSS and SSS time-frequency resource locations on the first type of carrier, and reduce the UE when the UE accesses the LTE system. Detecting the positional assumptions of PSS and sss improves synchronization performance.
• the time-frequency resource information of the PSS and the SSS in the first type of carrier are information of time-frequency resources on the first time slot of the subframe.
• FIG. 1 to FIG. 4 is a description of the communication method from the user equipment side.
• the following describes the communication method of the network side device from the network side.
• FIG. 5 it is an embodiment of a communication method according to an embodiment of the present invention. Includes:
• the network side device determines the first information, where the first information is used to indicate the type of the current carrier.
• the network side device determines the first information, where the first information is used to indicate the type of the current carrier, where The current carrier may be a first type of carrier, or a legacy carrier.
• the first type of carrier refers to a carrier that is different from the carrier type in the LTE version 8/9/10 system.
• the first type of carrier has no control region and PDCCH, and the data scheduling depends on the ePDCCH.
• the time domain density or frequency domain density of the CRS may be reduced on the first type of carrier, for example, CRS is not required to be transmitted per subframe or all bands.
• the network side device sends the first information to the user equipment in the current carrier.
• the network side sends the current carrier including the first information, so that the user equipment can determine the type of the current carrier according to the first information in the acquired current carrier.
• the network side device can enable the user equipment to determine the current carrier type according to the first information by setting the first information for indicating the type of the current carrier in the current carrier, and sending the current carrier.
• the data transmission between the network side device and the user equipment is implemented.
• FIG. 6 is an embodiment of a communication method according to an embodiment of the present invention, including:
• the network side device determines any one of radio resource control information, physical broadcast channel information, and system information block.
• the first information includes: any one of RRC information, PBCH information, and SIB, and the network side device sets the first information in the current carrier, that is, sets RRC information, PBCH information, and SIB. Any one.
• the first information is used not only to indicate the carrier type of the current carrier, but also to indicate the duplex type of the current carrier, and the duplex type includes TDD and FDD.
• the network side device sets the first type carrier.
• the network side device sets information about the first time-frequency resource of the PSS and the SSS on the first type of carrier, where the first time
• the information of the frequency resource includes that the PSS and the SSS are respectively located in the third OFDM symbol of the first subframe of the radio frame, and the SSS is located in the second OFDM symbol of the first subframe of the radio frame, or the information of the first time-frequency resource includes The PSS is located in the third OFDM symbol of the second subframe of the radio frame and the SSS is located in the second OFDM symbol of the second subframe of the radio frame.
• the information of the time-frequency resources of the PSS and the SSS may be the same.
• the PSS and the SSS in the FDD and the TDD system are respectively located in the third subframe of the first subframe of the radio frame.
• the OFDM symbol and the second OFDM symbol of the first subframe of the radio frame are similar in other positions.
• FDD and TDD use different time-frequency resource information of PSS and SSS.
• PSS and SSS are respectively located in the 3rd OFDM symbol of the 1st subframe of the radio frame and the 1st subframe of the radio frame.
• the second OFDM symbol; for the TDD system the PSS and the SSS are respectively located in the third OFDM symbol of the second subframe of the radio frame and the second OFDM symbol of the second subframe of the radio frame.
• the network side device sends the first type carrier.
• the network side device sends the first type carrier.
• the first information may further include other parameters for indicating a type of the current carrier, for example, the first information may include a relative positional relationship between the PSS and the SSS of the first type of carrier,
• the first information may include a relative positional relationship between the PSS and the SSS of the first type of carrier
• FIG. 7 an embodiment of a communication method according to an embodiment of the present invention includes: 701. If a current carrier needs to be set to a first type of carrier, the network side device sets a first type of carrier in a first type of carrier. The relative positional relationship between the primary synchronization signal and the secondary synchronization signal;
• the network side device may set the relative positional relationship between the PSS and the SSS of the current carrier in the current carrier, and use the relative positional relationship between the PSS and the SSS as the first information to indicate the carrier type of the current carrier, and if the current carrier
• the network side device sets the relative positional relationship between the PSS and the SSS of the first type of carrier in the first type of carrier, where the relative positional relationship between the PSS and the SSS of the first type of carrier is the first a positional relationship other than the relative positional relationship
• the first relative positional relationship is that the OFDM symbol of the PSS is adjacent to the OFDM symbol of the SSS and the OFDM symbol of the SSS is in front of the OFDM symbol of the PSS in the time domain, or the OFDM symbol and the SSS of the PSS OFDM symbols are separated by two OFDM symbols and the OFDM symbols of the SSS in the time domain The number is in front of the OFDM symbol of the PSS.
• the network side device sets information about a primary synchronization signal on a first type of carrier and a second time-frequency resource on the secondary synchronization signal.
• the network side device may set the information of the PSS and the second time-frequency resource of the SSS on the first type of carrier, so that the user equipment can implement the subframe synchronization according to the time-frequency resource information, where
• the information of the second time frequency resource includes: the PSS is located in the 4th OFDM symbol of the 1st subframe of the radio frame and the SSS is located in the 2nd OFDM symbol of the 1st subframe of the radio frame, or the PSS is located in the 2nd subframe of the radio frame
• the third OFDM symbol and the SSS are located in the first OFDM symbol of the second subframe of the radio frame.
• the network side device sets any one of physical broadcast channel information, system information block, and radio resource control information.
• the network side device further sets any one of PBCH information, SIB, and RRC information, and any one of the PBCH information, the SIB, and the RRC information is used to indicate the duplex type of the first type carrier.
• the duplex type includes TDD and FDD.
• the network side device sends the first type carrier.
• Step 704 is similar to step 602 described in the embodiment shown in FIG. 6, and details are not described herein again.
• the first information may also be the relative positional relationship between the PSS and the SSS of the current carrier and the PBCH information.
• the first information is the relative positional relationship between the PSS and the SSS of the current carrier.
• the communication method of the network side device as shown in FIG. 8, is an embodiment of a communication method according to an embodiment of the present invention, including:
• the network side device sets a relative position relationship between the primary synchronization signal and the secondary synchronization signal of the current carrier and physical broadcast channel information in the current carrier.
• the network side device may set the relative positional relationship between the PSS and the SSS of the current carrier and the PBCH information in the current carrier, and indicate the current carrier type by using the relative positional relationship between the PSS and the SSS and the PBCH information, where the PBCH information
• the time-frequency location information including the PBCH, the bit in the PBCH indicating that the current carrier is the first type of carrier, the CRC mask, the cell-specific reference signal CRS of the PBCH, and the de-rate matching information of the UE-specific reference signal .
• the network side device sets information of the primary synchronization signal on the first type of carrier and the third time-frequency resource of the secondary synchronization signal.
• the network side device sets the information of the PSS and the third time-frequency resource of the SSS on the first type of carrier.
• the information of the third time-frequency resource includes that the PSS is located in the third OFDM symbol of the first subframe of the radio frame and the SSS is located in the second OFDM symbol of the first subframe of the radio frame, or the PSS is located in the second frame of the radio frame.
• the third OFDM symbol of the subframe and the SSS is located in the second OFDM symbol of the second subframe of the radio frame.
• the information of the time-frequency resources of the PSS and the SSS may be the same.
• the PSS and the SSS in the FDD and the TDD system are respectively located in the third subframe of the first subframe of the radio frame.
• the OFDM symbol and the second OFDM symbol of the first subframe of the radio frame are similar in other positions.
• FDD and TDD use different time-frequency resource information of PSS and SSS.
• PSS and SSS are respectively located in the 3rd OFDM symbol of the 1st subframe of the radio frame and the 1st subframe of the radio frame.
• the second OFDM symbol; for the TDD system, the PSS and the SSS are respectively located in the third OFDM symbol of the second subframe of the radio frame and the second OFDM symbol of the second subframe of the radio frame.
• the relative position relationship and PBCH information of the PSS and the SSS set in the first type of carrier may also be used to indicate the duplex type of the first type of carrier.
• the network side device sends the first type carrier.
• Step 803 is similar to step 602 described in the embodiment shown in FIG. 6, and details are not described herein again.
• the network side device may set the first information in the current carrier, indicate the type of the current carrier by using the first information, and set the time-frequency resource information and the duplex type of the current carrier, so that the user side
• the device can identify the type of the current carrier by using relevant parameters, and implement data transmission with the network side device.
• an embodiment of a user equipment in an embodiment of the present invention includes:
• the acquiring unit 901 is configured to acquire first information that is sent by the network side device in the current carrier, where the first information is used to indicate that the type of the carrier is used;
• the determining unit 902 is configured to determine, according to the first information, a type of the current carrier after the acquiring unit 901 acquires the first information.
• the acquiring unit 901 acquires the first information of the current carrier sent by the network side device, and then the determining unit 902 determines the type of the current carrier according to the first information.
• the UE obtains the first information of the current carrier sent by the network side device.
• the type of the current carrier is determined, so that the UE can effectively identify the current carrier, and the UE can access the network side to implement data transmission.
• FIG. 10 is an embodiment of the user equipment in the embodiment of the present invention, including:
• the obtaining unit 901 and the determining unit 902 are the same as those described in the embodiment shown in FIG. 9, and are not described herein again.
• the determining unit 902 is specifically configured to use the RRC information according to the RRC information. Any one of the PBCH information and the system information block SIB determines that the current carrier is the first type carrier;
• the user equipment further includes:
• a first information determining unit 1001 configured to determine, after the determining unit determines that the current carrier is a first type of carrier, determining a first time frequency of a primary synchronization signal PSS and a secondary synchronization signal SSS on the first type of carrier
• the information of the resource, the information of the first time-frequency resource includes the third OFDM of the first OFDM of the first subframe of the radio frame, and the SSS is located in the second subframe of the first subframe of the radio frame.
• the symbol, or the information of the first time-frequency resource includes that the PSS is located in a third OFDM symbol of a second subframe of the radio frame, and the SSS is located in a second subframe of a second subframe of the radio frame OFDM symbol;
• the information of the time-frequency resources of the PSS and the SSS may be the same, for example, the PSS and the SSS in the FDD and TDD systems are respectively located in the first subframe of the radio frame.
• the third OFDM symbol and the second OFDM symbol of the first subframe of the radio frame are similar in other positions. Or, FDD and TDD use different time-frequency resource information of PSS and SSS.
• PSS and SSS are respectively located in the 3rd OFDM symbol of the 1st subframe of the radio frame and the 1st subframe of the radio frame.
• the second OFDM symbol; for the TDD system, the PSS and the SSS are respectively located in the third OFDM symbol of the second subframe of the radio frame and the second OFDM symbol of the second subframe of the radio frame.
• the first subframe synchronization unit 1002 is configured to: after the first information determining unit 1001 acquires the information of the first time-frequency resource, perform, according to the information of the first time-frequency resource, the first type of carrier. Frame synchronization.
• the determining unit 902 is specifically configured to determine, according to the relative positional relationship between the PSS and the SSS, that the current carrier is a first type of carrier, and the relative positional relationship between the PSS and the SSS on the first type of carrier.
• the first relative positional relationship is that the OFDM symbol of the PSS is adjacent to the OFDM symbol of the SSS and the OFDM symbol of the SSS is in front of the OFDM symbol of the PSS in the time domain.
• the OFDM symbol of the PSS and the OFDM symbol of the SSS are separated by two orthogonal frequency division multiplexing OFDM symbols and the OFDM symbol of the SSS in the time domain is in front of the OFDM symbol of the PSS;
• the user equipment further includes:
• the second information determining unit 1003 is configured to: after the determining unit determines that the current carrier is the first type of carrier, determine information about the second time-frequency resource of the PSS and the SSS on the first type of carrier,
• the information of the second time-frequency resource includes that the PSS is located in a fourth OFDM symbol of a first subframe of a radio frame, and the SSS is located in a second OFDM symbol of a first subframe of the radio frame, or
• the PSS is located in the third OFDM symbol of the second subframe of the radio frame, and the SSS is located in the first OFDM symbol of the second subframe of the radio frame;
• the second subframe synchronization unit 1004 is configured to perform subframe synchronization on the first type of carrier according to the information of the second time-frequency resource after the second information determining unit 1003 acquires the information of the second time-frequency resource. .
• the determining unit 902 is specifically configured to use the relative positional relationship and the PBCH information according to the PSS and the SSS. Determining that the current carrier is a first type of carrier, the PBCH information includes time-frequency location information of the PBCH, a bit in the PBCH indicating that the current carrier is a first type of carrier, a CRC mask, a cell-specific reference signal of the PBCH, and a UE Any one of the solution rate matching information of the specific reference signal;
• the user equipment further includes:
• the third information determining unit 1005 is configured to: after the determining unit 902 determines that the current carrier is the first type of carrier, determine information about the third time-frequency resource of the PSS and the SSS on the first type of carrier
• the information of the third time-frequency resource includes that the PSS is located in a third OFDM symbol of a first subframe of the radio frame, and the SSS is located in a second OFDM symbol of a first subframe of the radio frame Or the PSS is located at the 3rd OFDM symbol of the 2nd subframe of the radio frame And the SSS is located in the second OFDM symbol of the second subframe of the radio frame; specifically, on the first type of carrier of the FDD and the TDD system, the information of the time-frequency resources of the PSS and the SSS may be the same, for example
• the PSS and SSS in the FDD and TDD systems are respectively located in the 3rd OFDM symbol of the 1st subframe of the radio frame and the 2nd OFDM symbol of the 1st subframe of
• FDD and TDD use different time-frequency resource positions of PSS and SSS.
• PSS and SSS are respectively located in the third OFDM symbol of the first subframe of the radio frame and the first subframe of the radio frame. 2 OFDM symbols;
• the PSS and the SSS are respectively located in the 3rd OFDM symbol of the 2nd subframe of the radio frame and the 2nd OFDM symbol of the 2nd subframe of the radio frame.
• the third subframe synchronization unit 1006 is configured to perform subframe synchronization on the first type of carriers according to the information 1005 of the third time-frequency resource.
• the user equipment may further include:
• the duplex type determining unit 1007 is configured to determine a duplex type of the current carrier according to any one of PBCH information, a system information block SIB, and radio resource control RRC information, or for a PSS according to the current carrier.
• the relative position relationship with the SSS and the PBCH information determine the duplex type of the current carrier, the duplex type includes FDD and TDD, and the PBCH information includes: time-frequency position information of the PBCH, and the current carrier is used to indicate the current carrier in the PBCH. Any one of a bit of a type of carrier, a CRC mask, a cell-specific reference signal CRS of the PBCH, and a de-rate matching information of the UE-specific reference signal.
• the user equipment determines the carrier type of the current carrier according to the first information, and when the current carrier is the first type carrier, the time-frequency resource information of the PSS and the SSS of the first type carrier is also obtained and determined.
• the duplex type can effectively identify the current carrier and implement data transmission.
• an embodiment of a network side device includes:
• the setting unit 1101 is configured to determine first information, where the first information is used to indicate a type of a current carrier;
• the sending unit 1102 is configured to send the first information to the user equipment in the current carrier.
• the setting unit 1101 sets first information in the current carrier, where the first information is used to indicate the type of the current carrier, and then the transmitting unit 1102 sends the current carrier.
• the network side device in the embodiment of the present invention may be a station, or a wireless network.
• Network controller etc.
• the network side device can enable the user equipment to determine the current carrier type according to the first information by setting the first information for indicating the type of the current carrier in the current carrier, and sending the current carrier.
• the data transmission between the network side device and the user equipment is implemented.
• an embodiment of a network side device includes:
• the setting unit 1101 and the sending unit 1102 in the embodiment shown in FIG. 11 are similar to those described in the embodiment shown in FIG. 11, and details are not described herein again.
• the first information is further used to indicate duplex of the current carrier.
• the duplex type includes FDD and TDD;
• the setting unit 1101 is specifically configured to: set any one of the radio resource control RRC information, the PBCH information, and the system information block SIB in the current carrier;
• the first information setting unit 1201 is configured to: if the setting unit 1101 sets the current carrier as the first type carrier, set the first time-frequency resource of the primary synchronization signal PSS and the secondary synchronization signal SSS on the first type carrier.
• the information of the first time-frequency resource includes that the PSS and the SSS are respectively located in the third orthogonal frequency division multiplexing OFDM symbol of the first subframe of the radio frame, and the SSS is located in the second subframe of the first subframe of the radio frame.
• the OFDM symbols, or the information of the first time-frequency resource includes that the PSS is located in a third OFDM symbol of a second subframe of the radio frame, and the SSS is located in a second subframe of the radio frame 2 OFDM symbols.
• the information of the time-frequency resources of the PSS and the SSS may be the same.
• the PSS and the SSS in the FDD and the TDD system are respectively located in the third subframe of the first subframe of the radio frame.
• the OFDM symbols and the 2 OFDM symbols of the 1st subframe of the radio frame are similar in other positions.
• FDD and TDD use different time-frequency resource information of PSS and SSS.
• PSS and SSS are respectively located in the 3rd OFDM symbol of the 1st subframe of the radio frame and the 1st subframe of the radio frame.
• the PSS and the SSS are respectively located in the third OFDM symbol of the second subframe of the radio frame and the second OFDM symbol of the second subframe of the radio frame.
• the setting unit 1101 is specifically configured to: if the current carrier needs to be set to be the first a type of carrier, the relative positional relationship between the PSS and the SSS of the first type of carrier is set in the first type of carrier, and the relative positional relationship between the PSS and the SSS is a positional relationship other than the first relative positional relationship.
• the first relative positional relationship is that the OFDM symbol of the PSS is adjacent to the OFDM symbol of the SSS and the OFDM symbol of the SSS is in front of the OFDM symbol of the PSS in the time domain, or the OFDM symbol of the PSS and the OFDM symbol of the SSS are separated Two orthogonal frequency division multiplexed OFDM symbols and the OFDM symbols of the SSS in the time domain are in front of the OFDM symbols of the PSS;
• the network side device further includes:
• a second information setting unit 1202 configured to set information about the second time-frequency resource of the PSS and the SSS on the first type of carrier, where the information of the second time-frequency resource includes the PSS located in a radio frame
• the 4th OFDM symbol of 1 subframe and the SSS is located in the 2nd OFDM symbol of the 1st subframe of the radio frame, or the PSS is located in the 3rd OFDM symbol of the 2nd subframe of the radio frame And the SSS is located in the first OFDM symbol of the second subframe of the radio frame
• the first duplex type setting unit 1203 is configured to: after the second information setting unit 1202 sets the information of the second time-frequency resource And the device sets any one of the PBCH information, the system information block SIB, and the radio resource control RRC information, where any one of the PBCH information, the SIB, and the RRC information is used to indicate a duplex type of the first type of carrier,
• the duplex types include FDD and TDD.
• the setting unit 1101 is specifically configured to set a relative positional relationship between the PSS and the SSS of the current carrier.
• PBCH information the PBCH information includes time-frequency location information of the PBCH, a bit in the PBCH indicating that the current carrier is the first type of carrier, a CRC mask, a cell-specific reference signal CRS of the PBCH, and a solution rate of the UE-specific reference signal Matching any one of the information; and the network side device further includes:
• the third information setting unit 1204 is configured to: if the current carrier needs to be set to the first type of carrier, set information about the third time-frequency resource of the PSS and the SSS on the first type of carrier, where the third time The information of the frequency resource includes that the PSS is located in the third OFDM symbol of the first subframe of the radio frame and the SSS is located in the second OFDM symbol of the first subframe of the radio frame, or the PSS is located in the radio frame.
• the third OFDM symbol of the second subframe and the SSS is located in the second OFDM symbol of the second subframe of the radio frame, and the relative positional relationship and PBCH information of the PSS and the SSS are further used to indicate the Duplex type of the first type of carrier, the duplex type including TDD and FDD.
• the information of the time-frequency resources of the PSS and the SSS on the first type of carrier of the FDD and the TDD system may be the same, for example, the PSS and the SSS in the FDD and the TDD system are respectively located in the wireless
• the third OFDM symbol of the first subframe of the frame and the second OFDM symbol of the first subframe of the radio frame are similar in other positions.
• FDD and TDD use different time-frequency resource information of PSS and SSS.
• PSS and SSS are respectively located in the 3rd OFDM symbol of the 1st subframe of the radio frame and the 1st subframe of the radio frame.
• the PSS and the SSS are respectively located in the third OFDM symbol of the second subframe of the radio frame and the second OFDM symbol of the second subframe of the radio frame.
• the network side device in the embodiment of the present invention may be a station, or a wireless network control device or the like.
• the information of the time-frequency resources of the PSS and the SSS of the first type of carrier refers to the information of the time-frequency resource in the first time slot of the subframe as an example. .
• the network side device may set the first information, where the first information is used to indicate the type of the current carrier, so that the user equipment that receives the current carrier can obtain the first information, and according to the first The information determines the type of the current carrier, and implements data transmission between the network side device and the user equipment.
• an embodiment of a communication system in an embodiment of the present invention includes:
• the user equipment 1301 described in the embodiment shown in FIG. 9 or 10 and the network side device 1302 described in the embodiment shown in FIG. 11 or 12.
• the time domain position of the PSS in one subframe may be interchanged with the time domain location of the SSS, for example, the third OFDM symbol of the first subframe of the radio frame may be located in the SSS and the PSS is located in the radio frame.
• the second OFDM symbol of one subframe is similar to the other time domain positional relationships, and details are not described herein again.

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Citations (4)

• 2012
  • 2012-05-10 CN CN201280000576.7A patent/CN103548365A/zh active Pending
  • 2012-05-10 WO PCT/CN2012/075302 patent/WO2013166688A1/fr not_active Ceased

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