CN108476458A - It was found that the inside and outside PBCH to the UE operated in unlicensed band of reference signal transmission window is transmitted - Google Patents

Abstract

A kind of base station can find reference signal (DRS) transmission window (DTxW) outside, interior opportunistic ground transmitting physical broadcast channel (PBCH).In some embodiments, UE can use redundancy versions (RV) scrambler for the Master Information Block (MIB) for including in PBCH, to avoid the ambiguity at UE and determine that PBCH is in DTxW or outside DTxW.

Description

It was found that reference signal transmission window is inside and outside to the UE operated in unlicensed band PBCH transmission

Related application

This application claims in the equity of 2 months the 62/297th, No. 411 U.S. Provisional Patent Applications submitted for 19th in 2016, Its content is incorporated herein by reference, as fully expounded herein.

Background technology

Radio telecommunication network generally includes Radio Access Network (RAN), makes user equipment (UE) (such as intelligence electricity Words, tablet computer, laptop computer etc.) it is connectable to core network.The example of radio telecommunication network may include being based on The evolved packet system (EPS) of third generation partner program (3GPP) communication standard operation.In cellular networks, UE usually makes With channel corresponding with wireless frequency spectrum (for example, specifying the wireless frequency spectrum for cellular network communication) is authorized and base station communication.

Such as authorize auxiliary access (LAA), carrier wave polymerization (CA),Deng technology be used for exempting from Authorize frequency spectrum that the connection of UE is expanded to core network, and its example includes what Federal Communications Commission (FCC) proposed 5 gigahertzs (GHz) for Wi-Fi exempt from that frequency spectrum and other is authorized to exempt to authorize purposes.One in these technologies (such as LAA and CA) A little UE that may require are kept from the carrier wave (also referred to as " anchor point (anchor) ") for authorizing frequency spectrum, to make in exempting from mandate frequency spectrum Use carrier wave.In contrast, referred to herein as the other technologies of " independent technique " are (such as) UE can be enable Network connection is obtained in the case of not from the anchor point for authorizing frequency spectrum.

For independent technique, because authorizing does not have anchor point in frequency spectrum, the Transmission system in exempting to authorize frequency spectrum is needed to believe It ceases (including Master Information Block (MIB)).

Description of the drawings

By the detailed description below in conjunction with attached drawing, the embodiment in the present embodiment will readily appreciate that.For ease of description, Identical reference numeral can indicate identical structural detail.It is shown in the accompanying drawings by exemplary rather than restrictive mode Embodiment.

Fig. 1 can be achieved on the diagram of the exemplary environments of system and or method described herein；

Fig. 2 be show include find reference signal (DRS) transmission window (DTxW) subframe exemplary diagram；

Fig. 3 and Fig. 4 is the flow chart for showing to transmit related exemplary process with the MIB that DTxW is inside and outside；

Fig. 5 is the illustrative embodiments conceptually illustrated for the sending side component in the inside and outside transmission MIB of DTxW Block diagram；

Fig. 6 is the illustrative embodiments conceptually illustrated for the receiving side component in the inside and outside transmission MIB of DTxW Block diagram；And

Fig. 7 shows the example components of electronic equipment about one embodiment.

Specific implementation mode

Refer to the attached drawing described in detail below.Same reference numerals in different attached drawings can identify same or analogous member Part.It should be appreciated that without departing from the scope of the disclosure, can using other embodiment and can carry out structure or Change in logic.Therefore, detailed description below is not considered as restrictive, and the range of embodiment is by appended power Profit requires and its equivalent limits.

Be described herein exempt from authorize frequency spectrum in operate system (for example,System) in physics outside DTxW The technology of broadcast channel (PBCH) transmission.Particularly, transmission node (for example, base station) with opportunistic can transmit outside DTxW PBCH.In some embodiments, UE can use redundancy versions (RV) scrambler for the MIB for including in PBCH, at UE Ambiguity and determine PBCH be in DTxW or outside DTxW.It can be advantageous to improveIn system The reliability of PBCH transmission.In addition, technique described herein can help to reduce under the conditions of different listem-before-talks (LBT) The UE of PBCH obtains the time.

Fig. 1 can be achieved on the diagram of the exemplary environments 100 of system and or method described herein.Environment 100 can To include multiple UE 110, radio telecommunication network and external network and equipment.

Radio telecommunication network may include evolved packet system (EPS) comprising be based on third generation partner program Long term evolution (LTE) network and/or evolution block core (EPC) network of (3GPP) wireless communication standard operation.LTE network can To be or may include RAN comprising one or more base stations, such as eNB 120 and/or WLAN (WLAN) access point (AP) 130, UE 110 can be via itself and EPC network communications.ENB 120 can be designed as being grasped using mandate frequency spectrum Make, and WLAN AP 130 can be designed as use and exempt from that frequency spectrum is authorized to be operated.

EPC networks may include gateway (SGW) 140, PDN Gateway (PGW) 150 and mobility management entity (MME) 160.As shown, EPC networks can enable UE 110 be communicated (labeled as external network and equipment) with external network, such as Public land mobile network (PLMN), Public Switched Telephone Network (PSTN) and/or Internet protocol (IP) network (for example, because Special net).

UE 110 may include portable computing and communication equipment, such as personal digital assistant (PDA), smart phone, bee Cellular telephone, the laptop computer for being connectable to radio telecommunication network.UE 110 can also include non-portable computing device, Such as other of desktop computer, consumer or business equipment or the ability with the RAN for being connected to radio telecommunication network are set It is standby.UE 110 can also include the calculating that user can dress and communication equipment (also referred to as wearable device), and such as wrist-watch is good for Body band, necklace, glasses, eyeglass, ring, waistband, earphone or other kinds of wearable device.

UE 110 can be designed as via authorized spectrum band (for example, by eNB 120) and/or unlicensed band (for example, Pass through WLAN AP 130) it is connected to radio telecommunication network.In one embodiment, UE 110 can use CA and/or LAA Technology come using authorize and exempt from authorize frequency be connected to radio telecommunication network.Alternatively, and such as specifically described herein, UE 110 can use such asIndependent technique come be used only WLAN AP 130 be connected to radio telecommunication network (that is, It is not communicated by eNB 120).For example, when UE 110 is not in the range for wireless communication of WLAN AP 130 but in eNB When in the range of 120, useIt may be particularly useful.

ENB 120 may include receiving, handle and/or sending the business (example gone to UE 110 and/or received from UE 110 Such as, via air interface) one or more network equipments.ENB 2120 can with WLAN AP 130 coordinate with realize LAA, CA etc., to increase the Internet resources (for example, uplink and/or downlink bandwidth) of radio telecommunication network.

WLAN AP 130 may include receiving, handle and/or sending the industry gone to UE 110 and/or received from UE 110 One or more network equipments of business (for example, via air interface).In some embodiments, WLAN AP 130 can be 5 gigahertzs (GHz) for Wi-Fi that Federal Communications Commission (FCC) proposes exempt from that frequency spectrum and other is authorized to exempt to authorize use Independence (for example, non-anchor) version of 3GPP LTE communication standards is realized on the way.In some embodiments, this may include reality It is existingTechnology or other kinds of independent communication standard.WLAN AP 130 can also coordinate with eNB 120 with reality Existing LAA, CA etc., to increase the Internet resources (for example, uplink and/or downlink bandwidth) of radio telecommunication network.

SGW 140 can polymerize the business received from one or more eNB 120 and/or WLAN AP 130, and can be with The business of polymerization is sent to external network or equipment via PGW 150.Additionally, SGW 140 can polymerize from one or more The business that a PGW 150 is received, and the business of polymerization can be sent to one or more eNB 120 and/or WLAN AP 130.Operation is the anchor point of user plane during SWW140 can switch between eNB, and operates between different telecommunication networks Ambulant anchor point.

MME 160 may include one or more calculating and communication equipment, as eNB 120 and/or be aerogram Network provides the control node of the other equipment (for example, WLAN AP 130) of air interface.For example, MME 160 can execute behaviour Make to register radio telecommunication network to UE 110, to establish Bearer Channel associated with the session of UE 110 (for example, business Stream), to which UE 110 is switched to different eNB, MME or another network and/or executes other operations.MME 160 can be right It goes to UE 110 and/or the business received from UE 110 executes control operation.

PGW 150 may include the one or more networks that can polymerize from the business received of one or more SGW 140 Equipment, and the business of polymerization can be sent to external network.PGW 150 can with or alternatively from external network receive industry Business, and business can be sent to UE 110 (via eNB 120 and/or WLAN 130).

The quantity for providing equipment shown in FIG. 1 and/or network is only used for the purpose explained.In fact, there may be additional Equipment and/or network, less equipment and/or network, different equipment and/or network or be arranged differently with shown in Fig. 1 Equipment and/or network.Alternatively or additionally, one or more equipment of system 100 may be implemented to be described as by system The one or more functions that 100 another or multiple equipment is realized.Although in addition, shown in Fig. 1 it is " direct " connection, this A little connections should be interpreted logical communication path, and can essentially have one or more intermediate equipments (for example, routing Device, gateway, modem, interchanger, hub etc.).

ForDTxW is defined as eNB 120 can transmit the window of DRS wherein.In LTE system In, transmission DRS is so that UE can promote cell on/off to convert.For example, UE can execute cell detection, nothing using DRS Line resource management (RRM) measures and/or determines the appropriate time and frequency compensation parameter of channel.The signal that DRS includes can be with Including such as primary synchronization signal (PSS), secondary synchronization signal (SSS), cell specific reference signal (CRS) and optional channel shape State information reference signal (CSI-RS).ForSystem, the PBCH for carrying MIB can be additionally inserted into DRS.

In order to increase transmission opportunity, the position of the DRS transmission in DTxW can be variable (that is, floating).For example, can To transmit DRS in any subframe of DTxW.In, 3 bit fields transmitted in MIB can be used inclined In-migration specifies the specific position of the DRS in DTxW.3 bit fields can be used to deliver the deviant with specific sub-frame number, such as Relative to subframe 0 or 5.MIB can include additionally system control information, and such as system bandwidth information and UE and network communication are small Other control information that area's communication may need.For example, other than 3 bit offset fields, MIB can also include 3 bit bands Wide information field, 3 bit physical mixing ARQ indicator channels (PHICH) configuration fields and 8 bit system frame numbers (SFN) field.

Other than it can transmit MIB (via PBCH) in DTxW, WLAN AP 120 can also be at the subframe 0 of frame (for example, be subjected to LBT and be based on eNB embodiments) PBCH is transmitted to opportunistic outside DTxW.

Fig. 2 be show include find reference signal (DRS) transmission window (DTxW) subframe exemplary diagram.Fig. 2 can To specifically illustrate channel mapping related with the use of resource element (RE) in orthogonal frequency division multiplexing (OFDM) transmission plan.Scheming In 2, frequency domain is indicated on longitudinal axis, indicates time domain on transverse axis.

Single subframe 210 is shown in FIG. 2.Subframe can be based on specific carriers bandwidth (for example, 5MHz, 10MHz or 20MHz).Total carrier bandwidths can be divided into multiple OFDM subcarriers.For example, each subcarrier can have 15kHz or The bandwidth of 7.5kHz.In subframe 210, each subcarrier can be used for transmitting certain amount of symbol (be illustrated as 14 symbols, It is labeled as symbol 0 to 13 in fig. 2).Symbol can indicate the smallest discrete part of frame/subframe.In various embodiments, it accords with It number can indicate 2,4 or 6 bit informations of each symbol.

As described above, subframe 210 can be designated as include DTxW subframe, and therefore may include DRS information. As shown in Fig. 2, DRS can be transmitted, the various resource elements (for example, OFDM symbol) of wherein subframe 210 be designated as CRS, PSS, SSS, CSI-RS and PBCH resource element.Resource element corresponding with PBCH can be particularly used for transmission MIB.Such as Fig. 2 It is shown, PBCH can be transmitted using symbol 4,7,8,9,10 and 11.These symbols can be used for the inside and outside PBCH of DTxW.

Although MIB can be transmitted with every 10ms, the information content (that is, payload) of MIB can change less frequently Become (for example, per 40ms).In this case, UE 110 can receive four redundancy MIB.Four predefined redundancies can be used One in version (RV) scrambler encodes each in four redundancy MIB.Different RV may cause with different sequences MIB is scrambled.

As previously mentioned, MIB may include 3 bit information fields, it is used to indicate as sub-frame offset value to UE 110 The position of DRS.At UE 110, when transmitting MIB outside DTxW, this may potentially cause problem, because outside DTxW, such as Fruit transmits MIB, then is always transmitted in subframe 0.

Fig. 3 is the flow chart for showing to transmit related exemplary process 300 with the MIB that DTxW is inside and outside.Processing 300 can be with It is executed by such as UE 110.

Processing 300 may include decoding the MIB (frame 310) received in subframe.The decoding of UE 110 usually may include Modulation or demodulation, descrambling reconciliation rate-matched.In one embodiment, decoding can be held by the baseband processor of UE 110 Row.When descrambling MIB, it is using RV0 (redundancy versions 0), RV1 (redundancy versions 1), RV2 that UE 110, which can test MIB with determination, (redundancy versions 2) or encode MIB using RV3 (redundancy versions 3).In one embodiment, UE 110 can be used Each in RV0, RV1, RV2 and RV3 simultaneously descrambles MIB.Therefore, UE 110 can be based on which descrambling MIB is effectively determined using which redundancy versions scrambler (that is, RV0, RV1, RV2 or RV3).In this way, UE 110 can Assume test to identify the RV scramblers for encoding MIB to execute.

Processing 300 can also include determining whether redundancy versions match (frame 320) with predetermined redundancy versions.Implement at one In mode, predetermined redundancy versions can be RV0.

When redundancy versions match predetermined version value (for example, RV0), this can be the signal to UE 110, i.e., in DTxW Interior transmission DRS.In this case, UE 110 can be positioned and DRS using MIB offset fields (that is, 3 bit offset fields) (frame 320- is (and therefore with PBCH) corresponding subframe；Frame 330).

When redundancy versions and predetermined version value mismatch (for example, RV values are not RV0), this can be the letter to UE 110 Number, i.e., DRS is transmitted outside DTxW.In this case, UE can determine that PBCH is located at subframe 0 that (frame 320- is no；Frame 340). UE 110 can effectively marginalize out offset field (frame 340).Therefore, outside DTxW, MIB still can include that sub-frame offset is believed Breath, but UE 110 can ignore sub-frame offset information.

Position based on PBCH/DRS, as UE is based on being still to ignore the field using 3 bit offset fields (frame 330) Determined by (frame 340), UE can continue with PBCH/DRS (frame 350).Specifically, UE 110 can be handled in the normal fashion PBCH/DRS is to obtain control information.

Fig. 4 is the flow chart for showing to transmit related exemplary process 400 with the MIB that DTxW is inside and outside.Processing 400 can be with It is executed by such as WLAN AP 130 (or eNB 120).

Processing 400 may include opportunistic determination PBCH (frame 410) is transmitted outside DTxW.For example, in order to increase MIB's Transmission opportunity, WLAN AP 130 can be determined outside DTxW in transmitting MIB in PBCH.In such a case, it is possible in the son of frame PBCH is transmitted at frame 0.PBCH can with opportunistic be transmitted, this may refer to be transmitted by the LBT PBCH constrained.In LBT, WLAN AP 130 can be using " monitoring " channel before particular channel, and only can determine that channel is not another Equipment (for example, WiFi access points) uses channel when using (for example, the interference of channel is less than threshold value).

Processing 400 can also include being encoded (frame to MIB using the redundancy versions in addition to predetermined redundancy versions 420).As discussed with respect to FIG. 3, in one embodiment, predetermined redundancy value can be 0 (RV0).Therefore, WLAN AP 130 can encode MIB using RV1, RV2 or RV3.Processing 400 can also include transmission PBCH (including MIB) (frame 430).It is logical It crosses using not being that the redundancy versions of predetermined RV versions encode MIB, WLAN AP 130 can be signaled to UE 110 PBCH is being transmitted outside DTxW.In DTxW, predetermined redundancy versions (for example, RV0) can be used always.In this way, MIB can be transmitted per 10ms opportunistics outside DTxW, however, only transmitting predetermined RV versions (for example, RV0) in DTxW.

Fig. 5 is the illustrative embodiments conceptually illustrated for the sending side component in the inside and outside transmission MIB of DTxW Block diagram.For example, the component of Fig. 5 can be realized by the Baseband processing logic in WLAN AP 130 (or eNB 120).Fig. 5's Component can be used to implement the processing of Fig. 4.

As described above, MIB may include the system control information needed for UE, so as to appropriate in radio telecommunication network Ground accesses and operation.MIB can be the block of 40 bits, may include multiple fields.

Tail-biting convolutional code (TBCC) 510 can initially be encoded with 1/3 rate tail-biting convolutional code pair, 40 bit MIB, with Obtain the coding information of 120 bits.120 bits of coding can be repeated 16 times by rate matchers 520, this can generate 2880 A output bit.Scrambler 530 can be operated to be scrambled to 2880 output bits.It can be standardized according to four kinds of 3GPP One of signal scrambling technique (that is, RV0, RV1, RV2 or RV3) executes scrambling.In one embodiment, and as about Fig. 4 institutes It discusses, can scrambling be executed by WLAN AP 130 so that use RV0 when MIB is in DTxW.Outside DTxW, it can substitute Ground uses one in RV1, RV2 and RV3.The output of scrambler 530 may include 2880 scrambler bits.In some embodiments In, 0 filling can be carried out to bit sequence before or after scrambler 530 scrambles.

It is then possible to which scrambled bit is divided into 4 parts (block) by block device 540.Each piece can be 720 bits, And the block of 720 bits can be continuously transmitted with every 10ms.WLAN AP130 can generate new MIB with every 40ms.

Fig. 6 is the illustrative embodiments conceptually illustrated for the receiving side component in the inside and outside transmission MIB of DTxW Block diagram.For example, the component of Fig. 6 can be realized by the Baseband processing logic in UE 110.The component of Fig. 6 can be used to implement The processing of Fig. 3.

UE 110 can be handled via the data with the reception of the Radio Link of WLAN AP 130 for example to be demodulated with execution, OFDM processing and resource element (RE) demapping (frame 610) (are shown as through demodulation, OFDM processing and RE de-map components 610 To execute).For MIB, the sequence (that is, the output handled shown in Fig. 5) of (for example, per 10ms) 720 bits can be received.

Descrambler 620 can be descrambled based on the sequence of correct 720 bit of redundancy versions scrambler pair.Implement at one In mode, descrambler 620 can execute descrambling to carry out vacation to redundancy versions by using all possible redundancy versions scrambler If test, until obtaining effective descrambling bit sequence.In some embodiments, all four redundancies can concurrently be applied Version scrambler, to obtain the bit sequence (for example, 720 bits) correctly descrambled.Descrambler 620 can be exported additionally and be detected Redundancy versions scrambler instruction (RV).

The output of descrambler 620 can be input to reduction of speed (derate) adaptation 630, it can be with 1/6 rate pair Sequence carries out reduction of speed matching.The output of reduction of speed adaptation 630 may include the sequence of 120 bits, can be input to decoder 640.Decoder 640 can using 1/3 rate tail-biting convolutional code come execute TBCC decode, with obtain MIB 40 bits it is effective Load data.

Although MIB of the above description General Discussion with 40 bit lengths in various embodiments can To use the MIB length in addition to 40 bits.It is, for example, possible to use different rate matching value and coding redundancy value are changed MIB length.In some embodiments, instead of 40 bits, MIB length can particularly be set as 30 or 32 bits.More specifically Ground, in one embodiment, the length (for example, X is equal to 30,32 or 40 bits) that MIB payload can be with X bits. TBCC codings can be carried out to MIB payload with 1/3 rate, and the sequence of obtained 3X bits can be with through-rate Orchestration repeats 4n times, exports as 12*n*X bits, wherein n is integer (for example, 6 or 7).It then can be to the bit of rate-matched It is scrambled.Scrambled bit can be divided into 4 pieces, and QPSK modulation can be carried out to each piece with obtain (3nX-Y)/ It 2 OFDM symbols and is mapped to (3nX-Y)/2 RE and is transmitted that (wherein, Y depends on X, n and available for every 10ms RE)。

As used herein, term " circuit " or " processing circuit " may refer to, for part of it or including：It executes The application-specific integrated circuit (ASIC) of one or more softwares or firmware program, electronic circuit, processor (shared, special or group) And/or memory (shared, special or group), combinational logic circuit and/or other suitable hardware that described function is provided Component.In some embodiments, circuit can be embodied in one or more softwares or firmware module, or associated with circuit Function can be realized by one or more softwares or firmware module.In some embodiments, circuit may include at least portion Divide ground with the logic of hardware operation.

Embodiment described herein can use in hardware and/or the software realization to system of suitable configurations.Fig. 7 about One embodiment shows the example components of electronic equipment 700.In embodiment, electronic equipment 700 can be UE, eNB, WLAN AP or some other electronic equipments appropriate.In some embodiments, electronic equipment 700 may include application circuit 702, base band Circuit 704, radio frequency (RF) circuit 706, front-end module (FEM) circuit 708 and one or more antennas 760, at least as shown It is coupled like that.In other embodiments, any circuit may include in different equipment.

Application circuit 702 may include one or more application processor.For example, application circuit 702 may include such as But it is not limited to the circuit of one or more single core processors or multi-core processor.Processor may include general processor and special Any combinations of processor (for example, graphics processor, application processor etc.).Processor can be coupled in and/or may include Memory/storage, and be configurable to：Execute the instruction that is stored in memory/storage so that various applications and/or Operating system can operate in system.In some embodiments, storage medium 703 may include non-transitory computer can Read medium.Memory/storage may include such as computer-readable medium 703, can be non-transitory computer readable medium Matter.In some embodiments, application circuit 702 can be connected to or including one or more sensors, such as environmental sensor, Camera etc..

Baseband circuit 704 may include the electricity of such as, but not limited to one or more single core processors or multi-core processor Road.Baseband circuit 704 may include one or more baseband processor and/or control logic, to handle connecing from RF circuits 706 It receives the baseband signal that signal path receives and generates the baseband signal of the transmission signal path for RF circuits 706.Base band Circuit 704 can be connect with application circuit 702, for generating and handling baseband signal and control the operations of RF circuits 706. For example, in some embodiments, baseband circuit 704 may include the second generation (2G) baseband processor 704a, the third generation (3G) base Provided with processor 704b, forth generation (4G) baseband processor 704c and/or in other existing generation, exploitations or will be in future Other baseband processor 704d in the generation (for example, the 5th generation (5G), 6G etc.) of exploitation.Baseband circuit 704 is (for example, Base-Band Processing One or more of device 704a-d) it can handle and allow for via RF circuits 706 and one or more radio nets The various radio control functions of the communication of network.Radio control functions can include but is not limited to signal modulation/demodulation, volume Code/decoding, radio frequency displacement etc..In some embodiments, baseband circuit 704 can be deposited with storage medium 703 or with another Storage media is associated.

In some embodiments, the modulation/demodulation circuit of baseband circuit 704 may include Fast Fourier Transform (FFT), Precoding and/or constellation mapping/demapping function.In some embodiments, the coding/decoding circuit of baseband circuit 704 can be with Including convolution, tail biting convolution, turbo, Viterbi and/or low-density checksum (LDPC) coder/decoder functionalities.It adjusts The embodiment of system/demodulation coder/decoder functionalities is not limited to these examples, and may include it in other embodiments His suitable function.In some embodiments, baseband circuit 704 may include the element of protocol stack, such as evolved universal The element of grounding wireless access network (EUTRAN) agreement, including such as physics (PHY) element, MAC elements, wireless spread-spectrum technology (RLC) element, PDCP elements and/or wireless heterogeneous networks (RRC) element.The central processing unit (CPU) of baseband circuit 704 704e can be configured as：The element for running protocol stack, for the signaling of PHY, MAC, RLC, PDCP and/or rrc layer.One In a little embodiments, baseband circuit may include one or more audio digital signal processors (DSP) 704f.Audio DSP 704f It may include the element for compression/de-compression and echo cancellor, and may include that other are suitable in other embodiments Processing element.

Baseband circuit 704 can also include memory/storage 704g.Memory/storage 704g can be used for loading and deposit Data and/or instruction are stored up, the operation for being executed by the processor of baseband circuit 704.About one embodiment memory/deposit Storage may include suitable volatile memory and/or any combinations of nonvolatile memory.Memory/storage 704g can be with Any combinations of memory/storage including various levels including but not limited to there is embedded software to instruct (for example, firmware) Read-only memory (ROM), random access memory (for example, dynamic random access memory (DRAM)), cache, buffering Device etc..Memory/storage 704g can share in various processors, or can be exclusively used in par-ticular processor.

In some embodiments, the component of baseband circuit can be combined as suitable in one single chip, one single chip group, Or it is arranged on identical circuit board.In some embodiments, baseband circuit 704 and application circuit 702 some or it is complete Portion, which constitutes component, to implement together, such as implement in system on chip (SOC).

In some embodiments, baseband circuit 704 can provide the communication compatible with one or more wireless technologys.Example Such as, in some embodiments, baseband circuit 704 can be supported and E-UTRAN and/or other wireless MAN (WMAN), WLAN Or the communication of wireless personal area network (WPAN).Baseband circuit 704 is configured to support the radio communication of more than one wireless protocols Embodiment be properly termed as multimode baseband circuit.

RF circuits 706 can enable to use the electromagnetic radiation progress and wireless network modulated by non-solid medium Communication.In various embodiments, RF circuits 706 may include switch, filter, amplifier etc., to contribute to and wireless network Communication.RF circuits 706 may include receiving signal path, may include being received from FEM circuits 708 for down coversion RF signals and the circuit that baseband signal is supplied to baseband circuit 704.RF circuits 706 can further include sending signal path, It may include the baseband signal provided for up-conversion baseband circuit 704 and RF output signals be supplied to FEM circuits 708 for transmission circuit.

In some embodiments, RF circuits 706 may include receiving signal path and transmission signal path.RF circuits 706 Reception signal path may include mixer 706a, amplifier circuit 706b and filter circuit 706c.RF circuits 706 transmission signal path may include filter circuit 706c and mixer 706a.RF circuits 706 can further include comprehensive Clutch circuit 706d, the frequency used with the mixer 706a for sending signal path for synthesized received signal path. In some embodiments, the mixer 706a for receiving signal path can be configured as：Based on synthesizer circuit 706d institutes The frequency synthesis of offer carrys out the RF signals that down coversion is received from FEM circuits 708.Amplifier circuit 706b can be configured as： Amplify the signal after down coversion, and filter circuit 706c can be low-pass filter (LPF) or bandpass filter (BPF), They are configured as：Undesired signal is removed from the signal after down coversion, to generate output baseband signal.

Output baseband signal can be supplied to baseband circuit 704, for being further processed.In some embodiments, defeated It can be zero frequency baseband signal to go out baseband signal, but this is not required that.In some embodiments, the mixing of signal path is received Device circuit 706a may include passive frequency mixer, but the range of embodiment is without being limited thereto.

In some embodiments, the mixer 706a for sending signal path can be configured as：Based on synthesizer electricity The frequency synthesis that road 706d is provided carrys out up-conversion input baseband signal, to generate the RF output signals for FEM circuits 708. Baseband signal can be provided by baseband circuit 704, and can be filtered by filter circuit 706c.Filter circuit 706c can be with Including low-pass filter (LPF), but the range of embodiment is without being limited thereto.

In some embodiments, it receives the mixer 706a of signal path and sends the mixer of signal path 706a may include two or more frequency mixers, and can be arranged to quadrature frequency conversion and/or up-conversion respectively. In some embodiments, the mixer 706a for receiving signal path and the mixer 706a for sending signal path can be wrapped Two or more frequency mixers are included, and mirror image can be arranged to and inhibited (for example, Hartley mirror images inhibit).At some In embodiment, receive signal path mixer 706a and send signal path mixer 706a can respectively by Arrangement is used for Direct-conversion and/or Direct conversion.In some embodiments, the mixer 706a of signal path is received Superheterodyne operation is may be configured to the mixer 706a for sending signal path.

In some embodiments, output baseband signal and input baseband signal can be analog baseband signals, but implement The range of example is without being limited thereto.In some alternative embodiments, output baseband signal and input baseband signal can be digital basebands Signal.In these alternate embodiments, RF circuits 706 may include analog-digital converter (ADC) and digital analog converter (DAC) electricity Road, and baseband circuit 704 may include digital baseband interface, to be communicated with RF circuits 706.

In some bimodulus embodiments, individual radio IC circuits can be provided, for believing each frequency spectrum processing Number, but the range of embodiment is without being limited thereto.

In some embodiments, synthesizer circuit 706d can be decimal N synthesizers or decimal N/N+6 synthesizers, still The range of embodiment is without being limited thereto, because other kinds of frequency synthesizer can be suitable.For example, synthesizer circuit 706d Can be delta-sigma synthesizer, frequency multiplier or the synthesizer including having the phaselocked loop of frequency divider.

Synthesizer circuit 706d can be configured as：RF circuits are synthesized based on frequency input and divider control input The output frequency that 706 mixer 706a is used.In some embodiments, synthesizer circuit 706d can be decimal N/N+ 6 synthesizers.

In some embodiments, frequency input can be provided by voltage controlled oscillator (VCO), but this is not required that.It depends on Desired output frequency, divider control input can be provided by baseband circuit 704 or application processor 702.In some implementations In example, divider control input (for example, N) can be determined from look-up table based on the channel indicated by application processor 702.

The synthesizer circuit 706d of RF circuits 706 may include divider, delay phase-locked loop (DLL), multiplexer and phase Accumulator.In some embodiments, divider can be bimodulus divider (DMD), and phase accumulator can be digital phase Bit accumulator (DPA).In some embodiments, DMD is configurable to：(for example, be based on carry) is by input signal divided by N or N+ 6, to provide division of decimal ratio.In some example embodiments, DLL may include one group of cascade tunable delay member Part, phase detectors, charge pump and D flip-flop.In these embodiments, delay element was configurable to the VCO periods point Solution is Nd equal phase groupings, wherein Nd is the quantity of the delay element in delay line.By this method, DLL provides negative anti- Feedback, to assist in ensuring that the total delay by delay line is a VCO period.

In some embodiments, synthesizer circuit 706d can be configured as：Carrier frequency is generated as output frequency, and In other embodiments, output frequency can be carrier frequency multiple (for example, twice of carrier frequency, carrier frequency four Times), and be used in combination with quadrature generator and divider circuit, to generate at the carrier frequencies relative to each other with multiple Multiple signals of out of phase.In some embodiments, output frequency can be LO frequencies (fLO).In some embodiments, RF Circuit 706 may include IQ/ polar converters.

FEM circuits 708 may include receiving signal path, may be configured to from one or more antennas 760 The RF signals received are operated, and amplify the signal received and the amplified version for receiving signal is supplied to RF circuits 706 circuit for being further processed.FEM circuits 708 can further include sending signal path, may be configured to put The signal for transmission that big RF circuits 706 are provided is for by the progress of one or more of one or more antennas 760 The circuit of transmission.

In some embodiments, FEM circuits 708 may include TX/RX switch, to be grasped in sending mode and reception pattern It is switched between work.FEM circuits may include receiving signal path and transmission signal path.The reception signal road of FEM circuits Diameter may include low-noise amplifier (LNA), and to amplify the RF signals received, and (for example, to RF circuits 706) offer is put The big RF signals received are as output.The transmission signal path of FEM circuits 708 may include：Power amplifier (PA) is used In amplification (for example, what RF circuits 706 were provided) input rf signal；And one or more filters, for generating RF signals, It is then sent for (for example, being carried out by one or more of one or more antennas 760).

In some embodiments, electronic equipment 700 may include add ons, such as memory/storage, display, phase Machine, sensor and/or input/output (I/O) interface.In some embodiments, the electronic equipment of Fig. 7 is configurable to execute all One or more methods, process and/or the technology of those as described herein.

Many examples related with the embodiment of above-mentioned technology are presented below.

In the first example, a kind of base band device of user equipment (UE) for cellular network may include one or more A processor, is used for：For what is received in discovery reference signal (DRS) transmission window (DTxW) and via unlicensed band Wireless sub-frame, processing include the Physical Broadcast Channel (PBCH) of the control information for being connect with cellular network, which exists At the specific sub-frame of multiple subframes in DTxW in DTxW, wherein at least use the orthogonal frequency division multiplexing of specific sub-frame (OFDM) symbol 4,7,8,9,10 and 11 receives the PBCH in DTxW；And it handles from not in DTxW and in wireless son The PBCH of the wireless sub-frame received via unlicensed band at frame 0, wherein processing includes knowing in wireless sub-frame inside and outside DTxW Master Information Block (MIB) structure not from the PBCH in DTxW and not in DTxW.

In example 2, any exemplary theme of example 1 or this paper, wherein specific sub-frame is indicated as MIB or earlier The MIB deviants deviated relative to subframe 0 or 5 that include.

In example 3, any exemplary theme of example 1 or this paper, wherein one or more processors are additionally operable to：Make MIB is descrambled with multiple redundancy versions (RV) scrambler；Determine which of multiple RV scramblers obtain effective solution of MIB It disturbs；And when determining RV scramblers and predetermined RV scramblers mismatch, ignore deviant.

In example 4, any exemplary theme of example 3 or this paper, wherein the length of RV scramblers is 720 bits.

In example 5, any exemplary theme of example 1 or 2 or this paper, wherein use 0 pair of redundancy versions (RV) MIB in DTxW is scrambled.

In example 6, any exemplary theme of example 1 or 2 or this paper, wherein one or more processors are also used In：MIB is descrambled using multiple redundancy versions scramblers；Come to carry out reduction of speed to the descrambling version of MIB with 1/6th rates Matching；And output matched to reduction of speed executes tail biting convolution decoder (TBCC).

In example 7, any exemplary theme of example 1 or this paper, wherein identified with 10 milliseconds of gap periods Mib structure.

In the 8th example, a kind of UE includes logic, is used for：For in discovery reference signal (DRS) transmission window (DTxW) in and via the subframe that unlicensed band receives, processing includes the object of the control information for being connect with cellular network Broadcast channel (PBCH) is managed, which is located in DTxW at the specific sub-frame of multiple subframes in DTxW, which includes making PBCH is descrambled with 0 scrambler of redundancy versions (RV)；Processing from not in DTxW and at subframe 0 via exempt from authorize frequency The PBCH for the subframe that section receives, processing subframe 0 include being descrambled to PBCH using the RV scramblers in addition to RV0；Wherein, it handles The subframe of DTxW includes identifying Master Information Block (MIB) structure from the PBCH in DTxW and not in DTxW.

In example 9, any exemplary theme of example 8 or this paper, wherein at least use the orthogonal frequency of specific sub-frame (OFDM) symbol 4,7,8,9,10 and 11 is multiplexed to receive the PBCH in DTxW.

In example 10, any exemplary theme of example 8 or 9 or this paper, wherein specific sub-frame be indicated as MIB or The deviant deviated relative to subframe 0 or 5 that MIB earlier includes.

In example 11, any exemplary theme of example 10 or this paper further include logic, are used for：Use multiple redundancies Version (RV) scrambler descrambles MIB；It determines which of multiple RV scramblers obtain and realizes that effectively descrambling for MIB is correct Code；And when determining RV scramblers are mismatched with the predetermined RV scramblers for the MIB transmission definition in DTxW, ignore offset Value.

In example 12, any exemplary theme of example 11 or this paper, wherein the length of RV scramblers is 720 bits.

In example 13, any exemplary theme of example 8 or 9 or this paper, wherein use 0 pair of redundancy versions (RV) MIB in DTxW is scrambled.

In example 14, any exemplary theme of example 8 or 9 or this paper further include logic, are used for：Using multiple superfluous Remaining version scrambler descrambles MIB；Come to carry out reduction of speed matching to the descrambling version of MIB with 1/6th rates；And to drop The matched output of speed executes tail biting convolution decoder (TBCC).

In example 15, any exemplary theme of example 8 or this paper, wherein known with 10 milliseconds of gap periods Other mib structure.

In the 16th example, a kind of base station may include circuit, be used for：Via unlicensed band and it is directed to and discovery The subframe of the corresponding frame of reference signal (DRS) transmission window (DTxW) subframe, transmission is comprising for making user equipment (UE) can The Physical Broadcast Channel (PBCH) for the control information being connect with cellular network, the PBCH include at specific sub-frame in DTxW, Wherein, at least come in encoding D TxW using orthogonal frequency division multiplexing (OFDM) symbol 4,7,8,9,10 and 11 of specific sub-frame in DTxW PBCH；And in the case where being constrained by listem-before-talk (LBT), using unlicensed band and at the subframe of frame 0, DTxW outer opportunistics ground transmitting physical broadcast channel (PBCH).

In example 17, any exemplary theme of example 16 or this paper, wherein PBCH inside and outside DTxW includes main letter Cease block (MIB) structure.

In example 18, any exemplary theme of example 17 or this paper, wherein optional subframe is indicated as being included in Deviant in MIB or earlier MIB.

In example 19, any exemplary theme of example 17 or this paper, wherein circuit is additionally operable to：When being passed in DTxW When defeated MIB, MIB is scrambled using 0 scrambler of redundancy versions (RV)；And when transmitting MIB outside DTxW, using non-zero RV scrambles MIB.

In example 20, any exemplary theme of example 17 or this paper, wherein the length of RV scramblers is 720 bits.

In example 21, any exemplary theme of example 17 or this paper, wherein the length of mib structure is 30,32 or 40 Bit.

In the 22nd example, a kind of base station may include logic, be used for：It is passed for reference signal (DRS) is found The subframe of the corresponding frame of defeated window (DTxW) subframe, generates comprising for making user equipment (UE) that can be connect with cellular network The first Physical Broadcast Channel (PBCH) data of information are controlled, the first PBCH data are located at multiple sons in DTxW in DTxW At the specific sub-frame of frame, wherein the generation of the first PBCH data includes using the first PBCH data of redundancy versions (RV) 0 scrambler pair It is scrambled；The 2nd PBCH data are generated at subframe outside DTxW, the generations of the 2nd PBCH data includes use in addition to RV0 The 2nd PBCH of RV scramblers pair scramble；And transmit the first and second PBCH using unlicensed band.

In example 23, any exemplary theme of example 22 or this paper, wherein constrained by listem-before-talk (LBT) In the case of, include the 2nd PBCH data opportunistics in the subframe 0 of frame.

In example 24, any exemplary theme of example 22 or this paper, wherein at least use orthogonal frequency division multiplexing (OFDM) symbol 4,7,8,9,10 and 11 transmits the first and second PBCH data.

In example 25, any exemplary theme of example 22 or this paper, wherein optional subframe is indicated as being included in master Deviant in block of information (MIB).

In the 26th example, a kind of method by user equipment (UE) implementation includes：For with via exempt from authorize frequency Section receive the corresponding frame of discovery reference signal (DRS) transmission window (DTxW) subframe wireless sub-frame, processing comprising for The Physical Broadcast Channel (PBCH) of the control information of cellular network connection, the PBCH are located at multiple subframes in DTxW in DTxW Specific sub-frame at, wherein at least connect using the orthogonal frequency division multiplexing of specific sub-frame (OFDM) symbol 4,7,8,9,10 and 11 Receive the PBCH in DTxW；And it handles from the nothing received via unlicensed band not in DTxW and at wireless sub-frame 0 The PBCH of line subframe, wherein processing includes identifying from DTxW and not in DTxW in the inside and outside wireless sub-frames of DTxW Master Information Block (MIB) structure of PBCH.

In example 27, any exemplary theme of example 26 or this paper, wherein specific sub-frame is indicated as being included in Deviant in MIB or earlier MIB.

In example 28, any exemplary theme of example 27 or this paper further include：It is disturbed using multiple redundancy versions (RV) Code descrambles MIB；Determine which of multiple RV scramblers obtain effective descrambling of MIB；And when determining correct generation When code is mismatched with predetermined RV scramblers, ignore deviant.

In example 29, any exemplary theme of example 28 or this paper, wherein the length of RV scramblers is 720 bits.

In the 30th example, a kind of UE may include：For being referred to for the discovery received via unlicensed band The wireless sub-frame of the corresponding frame of signal (DRS) transmission window (DTxW) subframe, processing include the control for being connect with cellular network The module of the Physical Broadcast Channel (PBCH) of information processed, the PBCH are located at the specific sub-frame of multiple subframes in DTxW in DTxW Place, wherein at least received in DTxW using the orthogonal frequency division multiplexing of specific sub-frame (OFDM) symbol 4,7,8,9,10 and 11 PBCH；With for handling from the wireless sub-frame received via unlicensed band not in DTxW and at wireless sub-frame 0 The module of PBCH, wherein processing includes identifying from DTxW and not in DTxW in the inside and outside wireless sub-frames of DTxW Master Information Block (MIB) structure of PBCH.

In example 31, any exemplary theme of example 30 or this paper, wherein specific sub-frame is indicated as MIB or more The deviant deviated relative to subframe 0 or 5 that early MIB includes.

In example 32, any exemplary theme of example 32 or this paper further include：For using multiple redundancy versions (RV) module that scrambler descrambles MIB；For determining which of multiple RV scramblers obtain the mould of MIB effectively descrambled Block；And for when determining correct code is mismatched with predetermined RV scramblers, ignoring the module of deviant.

In example 33, any exemplary theme of example 32 or this paper, wherein the length of RV scramblers is 720 bits.

In the foregoing description, describing various embodiments by reference to attached drawing.It will be apparent, however, that can be to it It carry out various modifications and changes, and additional embodiment can be implemented, without departing from as illustrated in appended claims Broader range.Therefore, the description and the appended drawings are considered illustrative rather than restrictive.

Although for example, a series of signal and/or operation are described about one or more attached drawings, in other realities The sequence of signal can be changed by applying in example.In addition, unrelated signal/operation can execute parallel.

It is readily apparent that illustrative aspect as described above can be with software, firmware in the embodiment shown in the figure Implement with many different forms of hardware.Actual software code or special control hardware in terms of for implementing these should not be by It is construed to limit.Therefore, the operation and behavior in terms of these are described without reference to specific software code, should be managed Solution, software and control hardware can be designed as implementing these aspects based on description herein.

In addition, specific part may be implemented as realizing " logic " of one or more functions.The logic may include all Such as the combination of application-specific integrated circuit (" ASIC ") or the hardware or hardware and software of field programmable gate array (" FPGA ").

Although enumerating and/or disclosing in the description the specific combination of feature in the claims, these combinations It is not intended to be limited to.In fact, many features in these features can be not record specifically and/or not say in the claims Mode is combined disclosed in bright book.

Unless explicitly recited, otherwise any element used herein, behavior or instruction are all not interpreted as closing It is key or necessary.As it is used herein, word " and " not necessarily exclude to mean in this case using example it is short The explanation of language "and/or".Equally, as it is used herein, word "or" is not necessarily excluded in this case using example Mean the explanation of phrase "and/or".Moreover, as it is used herein, article " one/a kind of " be intended to include it is one or more, And it can be used interchangeably with phrase " one/a kind of or multiple/a variety of ".In the case where only meaning one, word " one is used It is a ", " single ", " only " or similar language.

Claims (25)

1. a kind of base band device of user equipment (UE) for cellular network, including one or more processors, are used for：

For finding in reference signal (DRS) transmission window (DTxW) and via the wireless sub-frame that unlicensed band receives, Processing includes the Physical Broadcast Channel (PBCH) of the control information for being connect with the cellular network, and the PBCH is described At the specific sub-frame of multiple subframes in DTxW in the DTxW, wherein at least use the orthogonal frequency of the specific sub-frame Multiplexing (OFDM) symbol 4,7,8,9,10 and 11 is divided to receive the PBCH in the DTxW；And

It handles from the wireless sub-frame received via the unlicensed band not in the DTxW and at wireless sub-frame 0 PBCH,

Wherein, processing includes that identification comes from the DTxW and not described in the wireless sub-frame inside and outside DTxW Master Information Block (MIB) structure of the PBCH in DTxW.

2. base band device according to claim 1, wherein the specific sub-frame is indicated as the MIB in the mib structure In the included deviant deviated relative to subframe 0 or 5.

3. base band device according to claim 2, wherein one or more of processors are additionally operable to：

The MIB is descrambled using multiple redundancy versions (RV) scrambler；

Determine which of the multiple RV scramblers obtain effective descrambling of the MIB；And

When determining RV scramblers and predetermined RV scramblers mismatch, ignore the deviant.

4. base band device according to claim 3, wherein the length of the RV scramblers is 720 bits.

5. base band device according to claim 1 or 2, wherein use the MIB in 0 couple of DTxW of redundancy versions (RV) It is scrambled.

6. base band device according to claim 1 or 2, wherein one or more of processors are additionally operable to：

The MIB is descrambled using multiple redundancy versions scramblers；

Come to carry out reduction of speed matching to the descrambling version of the MIB with 1/6th rates；And

Output matched to reduction of speed executes tail biting convolution decoder (TBCC).

7. base band device according to claim 1, wherein identify the mib structure with 10 milliseconds of gap periods.

8. a kind of user equipment (UE), including logic, are used for：

For in discovery reference signal (DRS) transmission window (DTxW) and via the subframe that unlicensed band receives, processing Include the Physical Broadcast Channel (PBCH) of the control information for being connect with cellular network, the PBCH is located in the DTxW At the specific sub-frame of multiple subframes in the DTxW, the processing includes：

The PBCH is descrambled using 0 scrambler of redundancy versions (RV)；

Handle the PBCH from the subframe received via unlicensed band not in the DTxW and at subframe 0, processing Frame 0 includes：

The PBCH is descrambled using the RV scramblers in addition to the RV0；

Wherein, the subframe for handling the DTxW includes identifying the PBCH from the DTxW and not in the DTxW Master Information Block (MIB) structure.

9. UE according to claim 8, wherein at least use orthogonal frequency division multiplexing (OFDM) symbol of the specific sub-frame 4,7,8,9,10 and 11 the PBCH in the DTxW is received.

10. UE according to claim 8 or claim 9, wherein wrapped in the MIB that the specific sub-frame is indicated as in the MIB The deviant deviated relative to subframe 0 or 5 included.

11. UE according to claim 10 further includes logic, is used for：

The MIB is descrambled using multiple redundancy versions (RV) scrambler；

Determine which of the multiple RV scramblers obtain the correct code effectively descrambled for realizing the MIB；And

When determining RV scramblers are mismatched with the predetermined RV scramblers for the MIB transmission definition in the DTxW, ignore described Deviant.

12. UE according to claim 11, wherein the length of the RV scramblers is 720 bits.

13. UE according to claim 8 or claim 9, wherein added using the MIB in 0 couple of DTxW of redundancy versions (RV) It disturbs.

14. UE according to claim 8 or claim 9 further includes logic, is used for：

The MIB is descrambled using multiple redundancy versions scramblers；

Come to carry out reduction of speed matching to the descrambling version of the MIB with 1/6th rates；And

Output matched to reduction of speed executes tail biting convolution decoder (TBCC).

15. UE according to claim 8, wherein identify the mib structure with 10 milliseconds of gap periods.

16. a kind of base station, including circuit, are used for：

Via unlicensed band and for the son of frame corresponding with reference signal (DRS) transmission window (DTxW) subframe is found Frame transmits the Physical Broadcast Channel for including the control information for making user equipment (UE) that can be connect with cellular network (PBCH), the PBCH includes in the DTxW at specific sub-frame, wherein at least uses specific sub-frame in the DTxW Orthogonal frequency division multiplexing (OFDM) symbol 4,7,8,9,10 and 11 encodes the PBCH in the DTxW；And

In the case where being constrained by listem-before-talk (LBT), using the unlicensed band and at the subframe of frame 0, in institute Transmit the Physical Broadcast Channel (PBCH) with stating the outer opportunistics of DTxW.

17. base station according to claim 16, wherein the PBCH inside and outside DTxW includes Master Information Block (MIB) knot Structure.

18. base station according to claim 17, wherein the specific sub-frame is indicated as being included in the MIB or earlier Deviant in MIB.

19. base station according to claim 17, wherein the circuit is additionally operable to：

When transmitting the MIB in the DTxW, the MIB is scrambled using 0 scrambler of redundancy versions (RV)；And

When transmitting the MIB outside the DTxW, the MIB is scrambled using non-zero RV.

20. base station according to claim 17, wherein the length of the RV scramblers is 720 bits.

21. base station according to claim 17, wherein the length of the mib structure is 30,32 or 40 bits.

22. a kind of base station, including logic, are used for：

For the subframe of frame corresponding with reference signal (DRS) transmission window (DTxW) subframe is found, generate comprising for using The first Physical Broadcast Channel (PBCH) data for the control information that family equipment (UE) can be connect with cellular network, described first PBCH data are located in the DTxW at the specific sub-frame of multiple subframes in the DTxW, wherein the first PBCH numbers According to generation include using 0 scrambler of redundancy versions (RV) the first PBCH data being scrambled；

The 2nd PBCH data are generated at subframe outside the DTxW, the generation of the 2nd PBCH data includes using except RV0 RV scramblers in addition scramble the 2nd PBCH data；And

The first PBCH data and the 2nd PBCH data are transmitted using unlicensed band.

23. base station according to claim 22, wherein in the case where being constrained by listem-before-talk (LBT), described second Include PBCH data opportunistics in the subframe 0 of frame.

24. base station according to claim 22, wherein at least use orthogonal frequency division multiplexing (OFDM) symbol 4,7,8,9,10 The first PBCH data and the 2nd PBCH data are transmitted with 11.

25. base station according to claim 22, wherein the specific sub-frame is indicated as being included in Master Information Block (MIB) In deviant.