WO2018082032A1 - Procédé d'intervalle de mesure de rstd pour positionnement otdoa à bande étroite - Google Patents

Procédé d'intervalle de mesure de rstd pour positionnement otdoa à bande étroite Download PDF

Info

Publication number
WO2018082032A1
WO2018082032A1 PCT/CN2016/104678 CN2016104678W WO2018082032A1 WO 2018082032 A1 WO2018082032 A1 WO 2018082032A1 CN 2016104678 W CN2016104678 W CN 2016104678W WO 2018082032 A1 WO2018082032 A1 WO 2018082032A1
Authority
WO
WIPO (PCT)
Prior art keywords
nrstd
measurement gap
measurement
cell
prb
Prior art date
Application number
PCT/CN2016/104678
Other languages
English (en)
Inventor
Min Wu
Feifei SUN
Original Assignee
Mediatek Singapore Pte. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mediatek Singapore Pte. Ltd. filed Critical Mediatek Singapore Pte. Ltd.
Priority to PCT/CN2016/104678 priority Critical patent/WO2018082032A1/fr
Publication of WO2018082032A1 publication Critical patent/WO2018082032A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems

Definitions

  • This disclosure relates generally to wireless communications and, more particularly, for RSTD (Reference Signal Time Difference) measurement gap for narrowband OTDOA (Observation Time Difference of Arrival) positioning.
  • RSTD Reference Signal Time Difference
  • OTDOA Observation Time Difference of Arrival
  • UE can support simultaneous RSTD measurement and data reception when performing serving cell RSTD measurement or intra-frequency neighboring cell RSTD measurement.
  • NB narrowband
  • an OTDOA-capable NB-IOT (Narrowband Internet of Things) UE may not be able to support parallel processing of RSTD measurement and data reception considering the low cost/complexity.
  • a measurement gap similar to inter-frequency RSTD measurement gap should is needed for serving cell and intra-frequency neighboring cell RSTD measurement in narrowband OTDOA positioning system.
  • the method comprising: receiving a configuration of NRSTD (Narrowband RSTD) measurement gap for a cell, wherein the cell is serving cell or intra-frequency neighboring cell; performing NRSTD measurement on the cell during the measurement gap and no other signal transmission/reception.
  • NRSTD Nearband RSTD
  • the PRB index used for NRSTD measurement on serving cell is different from the PRB index used for data transmission on serving cell.
  • a NRSTD measurement is performed on multiple PRBs considering NPRS frequency hopping to improve measurement accuracy.
  • the PRB index used for NRSTD measurement on neighboring cell is different from the PRB index used for data transmission on serving cell.
  • a NRSTD measurement gap includes one NPRS occasion, wherein some time is reserved for UE preparation before and after the NPRS occasion. In one example, a NRSTD measurement gap includes multiple repetitions of NPRS occasion within a NPRS period. In one example, NRSTD measurement gap length is a predefined value. In one example, NRSTD measurement gap length is configurable and depends on UE coverage level. In one example, NRSTD measurement gap follows periodic pattern with a short gap length, and the periodicity depends on NPRS periodicity. In one example, NRSTD measurement gap follows one-off pattern with a long gap length, wherein multiple NRSTD measurements on multiple cells are performed.
  • a UE-triggered NRSTD measurement gap is applied since eNB is not aware of NRSTD measurement requested by E-SMLC for a UE.
  • an eNB-triggered NRSTD measurement gap is applied since eNB can be aware of NRSTD measurement requested by E-SMLC for a UE.
  • Figure 1 illustrates a system diagram of a wireless network in accordance with embodiments of the current invention.
  • Figure 2 illustrates an example of configuring a NRSTD measurement gap for a UE in accordance with embodiments of the current invention.
  • Figure 3 illustrates a use case of NRSTD measurement gap on serving cell in accordance with embodiments of the current invention.
  • Figure 4 illustrates a use case of NRSTD measurement gap on serving cell in accordance with embodiments of the current invention.
  • Figure 5 illustrates a use case of NRSTD measurement gap on intra-frequency neighboring cell in accordance with embodiments of the current invention.
  • Figure 6 illustrates an example of a NRSTD measurement gap including one NPRS occasion in accordance with embodiments of the current invention.
  • Figure 7 illustrates an example of a NRSTD measurement gap including multiple repetitions of NPRS occasion in accordance with embodiments of the current invention.
  • Figure 8 illustrates an example of periodic pattern of NRSTD measurement gap in accordance with embodiments of the current invention.
  • Figure 9 illustrates a procedure of performing multiple NRSTD measurements on multiple cells in accordance with embodiments of the current invention.
  • Figure 10 illustrates an example of one-off pattern of NRSTD measurement gap in accordance with embodiments of the current invention.
  • Figure 11 illustrates a procedure of UE-triggered request for a NRSTD measurement gap in accordance with embodiments of the current invention.
  • Machine type communication is a form of data communication that involves one or more entities that do not necessarily need human interaction.
  • a service optimized for machine type communication differs from a service optimized for human-to-human (H2H) communication.
  • H2H human-to-human
  • MTC services are different from the current mobile network communication services because MTC services involve different market scenarios, pure data communication, lower cost and effort, and a potentially very large number of communicating terminals with little traffic per terminal. Therefore, it is important to distinguish low cost (LC) MTC from regular UEs.
  • UE with bandwidth reduction (BR-UE) can be implemented with lower cost by reducing the buffer size, clock rate for signal processing, and so on.
  • MMC carrier is one description for simplification, and for the person skilled in the art, the MMC carrier could be named as MTC carrier, MMC cell, MTC cell, etc. and the operating mode is one example, and could be called as the transmission mode, operation mode, which is not limitation to the embodiments of this invention.
  • LTE R 13 the BW for IoT terminal is mim 180kHz. One benefits is the cost is low. And another benefits is the above BW and system bandwidth is good for the spectrum for MTC.
  • the 180kHz BW is compatible of the current GSM system, so the 180kHz BW of MTC carrier could be deployed in the current GSM band more easily.
  • MTC carrier is a stand-alone MTC carrier, the mode transmitting or receiving data on the stand alone carrier is called as stand-alone operating mode.
  • the actual transmission BW of 180kHz BW is the same as the actual transmission unit, resource block (RB) . If the above MTC carrier is deployed inside the LTE system, and coexists with the original common channel, signals of LTE system. A first system deployed in a second system, and the system BW of the first system smaller then the second system is called as in band operating mode.
  • the 180kHz BW of MTC carrier could be deployed on the guard band of the LTE system, for example, maintaining the LTE modulation scheme and numerology, the one or more resources block on the guard band of LTE system could be the 180khz band.
  • the 180kHz could adopt a new MCS, or new numerology different from LTE, the numerology is for example, the carrier spacing, by filtering, making the spectrum mask meets the requirement of protocol.
  • Virtual Resource Block (VRB) is one wireless resource definition in LTE system, wherein comprises: localized and distributed way. For one VRB pair, the two time slots in one subframe is allocated one VRB number. On DL allocation or UL grant comprises multiple basic blocks, for example, a set of PRB.
  • the MTC carriers could be with the same or different transmission format with LTE system, for example, the UL or DL, there could be different carrier spacings, for example, the MTC carrier spacing is 3.75kHz.
  • eMTC One project of in band eMTC, one signal receiving antenna the min terminal RF BW is supported as 1.4MHz, and the max 15dbm coverage enhancement, 1Mpbs data rate are supported too.
  • UE has a RF BW of 1.4MHz, so the UE may detect the synchronization signal and MIB carried in the PBCH. In one way, the UE obtains the cell ID etc information to obtain the time-frequency resource, TBS, to decoding the SIB1. And the information to decoding other SIBs could be obtained from SIB1.
  • the future 5G system could adopt multiple different transmission formats, and the different transmission formats could be designed for different requirements.
  • one transmission format could support ultra reliable requirement, and another transmission format supports high rate requirement, for example, wide band LTE system, mmWave (MMW) system. Yet another transmission format could support ultra low latency.
  • the embodiments of this invention could be used in 5G communication system, or used to solve the problems of coexistence of 4G and 5G systems.
  • FIG. 1 illustrates a system diagram of a wireless network with NB IoT in accordance with embodiments of the current invention.
  • Wireless communication system 100 includes one or more fixed base infrastructure units, such as base stations 101 and 102, forming a network distributed over a geographical region.
  • the base unit may also be referred to as an access point, an access terminal, a base station, a Node-B, an eNode-B, or by other terminology used in the art.
  • the one or more base stations 101 and 102 serve a number of UEs 103 and 104 within a serving area, for example, a cell, or within a cell sector.
  • Base stations 101 and 102 can support different RATs.
  • the two base stations simultaneously serve the UE 103 within their common coverage.
  • Base stations 101 and 102 transmit downlink communication signals 112, 114 and 117 to UEs in the time and/or frequency domain.
  • UE 103 and 104 communicate with one or more base stations 101 and 102 via uplink communication signals 111, 113 and 116.
  • the UEs are NB-IoT devices. They communicate with the base stations in NB by receiving DL transmission format information through signaling channels. The UEs further decode and connect with the base stations based on the received system information.
  • FIG. 1 further shows simplified block diagrams of base station 101 and UE 103 in accordance with the current invention.
  • Base station 101 has an antenna 156, which transmits and receives radio signals.
  • a RF transceiver module 153 coupled with the antenna, receives RF signals from antenna 156, converts them to baseband signals and sends them to processor 152.
  • RF transceiver 153 also converts received baseband signals from processor 152, converts them to RF signals, and sends out to antenna 156.
  • Processor 152 processes the received baseband signals and invokes different functional modules to perform features in eNB 101.
  • Memory 151 stores program instructions and data 154 to control the operations of eNB 101.
  • Base station 101 also includes a set of control modules circuit 155 that carry out functional tasks.
  • UE 103 has an antenna 136, which transmits and receives radio signals.
  • a RF transceiver module 133 coupled with the antenna, receives RF signals from antenna 136, converts them to baseband signals and sends them to processor 132.
  • RF transceiver 133 also converts received baseband signals from processor 132, converts them to RF signals, and sends out to antenna 136.
  • Processor 132 processes the received baseband signals and invokes different functional modules to perform features in UE 103.
  • Memory 131 stores program instructions and data 138 to control the operations of UE 103.
  • UE 103 also includes a set of control modules circuit 135 that carry out functional tasks.
  • the eNB can serve different kind of UEs.
  • UE 103 and 104 may belong to different categories, such as having different RF bandwidth or different subcarrier spacing.
  • UE belonging to different categories is be designed for different use cases or scenarios.
  • some use case such as Machine Type Communication (MTC) may require very low throughput, delay torrent, the traffic packet size may be very small (e.g., 1000 bit per message) , extension coverage.
  • MTC Machine Type Communication
  • Some other use case, e.g. intelligent transportation system may be very strict with latency, e.g. orders of 1ms of end to end latency.
  • Different UE categories can be introduced for these diverse requirements. Different frame structures or system parameters may also be used in order to achieve some special requirement.
  • different UEs may have different RF bandwidths, subcarrier spacing values, omitting some system functionalities (e.g., random access, CSI feedback) , or use physical channels /signals for the same functionality (e.g., different reference signals) .
  • system functionalities e.g., random access, CSI feedback
  • physical channels /signals e.g., different reference signals
  • the wireless communication system 100 utilizes an OFDMA or a multi-carrier based architecture including Adaptive Modulation and Coding (AMC) on the downlink and next generation single-carrier (SC) based FDMA architecture for uplink transmissions.
  • SC based FDMA architectures include Interleaved FDMA (IFDMA) , Localized FDMA (LFDMA) , and DFT-spread OFDM (DFT-SOFDM) with IFDMA or LFDMA.
  • IFDMA Interleaved FDMA
  • LFDMA Localized FDMA
  • DFT-SOFDM DFT-spread OFDM
  • UEs are served by assigning downlink or uplink radio resources that typically comprises a set of sub-carriers over one or more OFDM symbols.
  • Exemplary OFDMA-based protocols include the developing Long Term Evolution (LTE) of the 3GPP UMTS standard and the IEEE 802.16 standard.
  • the architecture may also include the use of spreading techniques such as multi-carrier CDMA (MC-CDMA) , multi-carrier direct sequence CDMA (MC-DS-CDMA) , Orthogonal Frequency and Code Division Multiplexing (OFCDM) with one or two-dimensional spreading.
  • MC-CDMA multi-carrier CDMA
  • MC-DS-CDMA multi-carrier direct sequence CDMA
  • OFDM Orthogonal Frequency and Code Division Multiplexing
  • the wireless communication system 100 may utilize other cellular communication system protocols including, but not limited to, TDMA or direct sequence CDMA.
  • NPRS subframe should avoid NPSS/NSSS, NPBCH, NPDCCH, NPDSCH subframe. And, considering backward-compatibility of Rel-13 NB-IOT UE, the NPRS subframe can only be allocated within invalid NB-IOT DL subframes. These constraints cause a small number of potential subframes to be configurable as NPRS subframe. Thus, consecutive NPRS subframe configuration within a NPRS occasion is very difficult, and there may be valid NB-IOT DL subframe (s) within a NPRS occasion.
  • one problem is whether to need to monitor/receive NPDCCH/NPDSCH transmitted in the valid NB-IOT DL subframe (s) within a NPRS occasion when RSTD measurement is being performed.
  • an OTDOA-capable NB-IOT UE may not be able to support simultaneous RSTD measurement and data reception.
  • the first method is up to UE implementation to drop either NPRS subframe or valid NB-IOT DL subframe. For example, if a NPDSCH transmission has been scheduled and overlaps a NPRS occasion, UE can drop NPRS subframe and wait for next NPRS occasion to perform RSTD measurement, as long as UE can ensure to finish RSTD measurement and report a RSTD value within a requested response time.
  • One advantage is that there is no any specification impact and UE behavior has a complete flexibility.
  • the disadvantage is that resource utilization may not be efficient considering the case that NPDCCH/NPDSCH within a NPRS occasion needs to be dropped when RSTD measurement is being performed.
  • the second method is to specify a priority to guide UE behavior. For example, RSTD measurement has a higher priority.
  • UE When performing RSTD measurement, UE needn’ t to monitor NPDCCH and receive NPDSCH. Network should avoid schedule an OTDOA-capable Rel-14 NB-IOT UE during a NPRS occasion.
  • On advantage is that there is no ambiguity on UE behavior and no any signaling overhead.
  • the disadvantage is that the peak data rate of OTDOA-capable NB-IOT UE may be impacted. Since OTDOA positioning protocol exchanged between UE and location server is transparent to eNB, eNB cannot exactly know when UE will perform RSTD measurement. Therefore, all valid NB-IOT DL subframes within each NPRS occasion cannot be scheduled for an OTDOA-capable NB-IOT UE even though RSTD measurement is not being performed.
  • the third method is to introduce a measurement gap similar to the current existing inter-frequency RSTD measurement gap.
  • inter-frequency RSTD measurement means the center carrier frequency of measuring cell is different from serving cell, and carrier frequency needs to be switched for RSTD measurement.
  • legacy mechanism/procedure of inter-frequency RSTD measurement gap can be directly reused, e.g. the UE requests a measurement gap when serving cell RSTD measurement will be performed.
  • the requested measurement gap length is related to the UE coverage level.
  • UE sends a message to eNB to start/stop the measurement gap.
  • One advantage is no ambiguity on UE behavior and the good resource utilization comparing with the previous two methods.
  • whether to require a measurement gap for serving cell RSTD measurement depends on the capability of simultaneous RSTD measurement and data reception. If an OTDOA-capable NB-IOT UE doesn’t support simultaneous RSTD measurement and data reception, a measurement gap is required for serving cell RSTD measurement. If an OTDOA-capable NB-IOT UE supports simultaneous RSTD measurement and data reception, a measurement gap is not required for serving cell RSTD measurement.
  • the capability on simultaneous RSTD measurement and data reception is optional and depends on the UE chipset design. And, the UE capability on simultaneous RSTD measurement and data reception can be reported to network via RRC signaling.
  • neighboring cell RSTD measurement is necessary since arrival time measurement needs to be performed on at least three different cells to derive the UE location.
  • the carrier frequency of neighboring cell is same as serving cell at eNB side. However, the carrier frequency of neighboring cell may be different from serving cell at UE side. If PRB index used for neighboring cell RSTD measurement is different from the PRB index for serving cell, carrier switching is also required and data reception of serving cell cannot be continued. The case is similar to existing inter-frequency RSTD measurement. Similarly, a measurement gap similar to inter-frequency measurement gap is introduced for the case of intra-frequency neighboring cell RSTD measurement.
  • PRB index used for neighboring cell RSTD measurement is same as the PRB index for serving cell, carrier switching is not required. However, there still is an issue on simultaneous RSTD measurement and data reception, which is discussed above for serving cell RSTD measurement. Similarly, for a UE without capability of simultaneous RSTD measurement and data reception, a measurement gap is introduced for the case of intra-frequency neighboring cell RSTD measurement.
  • a measurement gap similar to legacy inter-frequency RSTD measurement gap is required for both serving cell and intra-frequency neighboring cell RSTD measurement in narrowband OTDOA positioning system.
  • the measurement gap is named as NRSTD (Narrowband Reference Signal Time Difference) measurement gap.
  • Figure 2 illustrates an example of configuring a NRSTD measurement gap for an OTDOA-capable NB-IOT UE, wherein comprising: receiving a configuration of NRSTD measurement gap for a cell by a UE, wherein the cell is serving cell or intra-frequency neighboring cell in step 210; and performing NRSTD measurement on the cell by the UE during the measurement gap and no any signal transmission/reception in step 220.
  • one PRB within LTE system bandwidth is allocated for data service of NB-IOT UE.
  • the PRB can be anchor PRB with the functionality of supporting initial access of NB-IOT UE, e.g. with NPSS/NSSS, NPBCH, NSIB subframe.
  • the PRB can be non-anchor PRB without the functionality of supporting initial access of NB-IOT UE and just support data transmission.
  • NPRS subframe (s) can be configured on anchor PRB or non-anchor PRB.
  • Figure 3 illustrates a use case of NRSTD measurement gap on serving cell in accordance with embodiments of the current invention.
  • the PRB index used for NRSTD measurement on serving cell is different from the PRB index for data transmission, i.e. NPDCCH/NPDSCH transmission.
  • NPRS subframe is configured on PRB 301 for a UE.
  • NPDCCH/NPDSCH is scheduled on PRB 302 for the UE.
  • a measurement gap is required for the UE to perform NRSTD measurement on PRB 301.
  • PRB 301 is anchor PRB and PRB 302 is non-anchor PRB.
  • both PRB 301 and 302 are non-anchor PRB.
  • PRB 301 is non-anchor PRB
  • PRB 302 is anchor PRB.
  • Figure 4 illustrates a use case of NRSTD measurement gap on serving cell in accordance with embodiments of the current invention.
  • NPRS subframe is configured on multiple PRBs for frequency hopping to improve NRSTD measurement accuracy.
  • NPRS subframe is configured on PRB 401 and 402 for a UE.
  • NPDCCH/NPDSCH is scheduled on PRB 402 for the UE.
  • a measurement gap is required for the UE to perform NRSTD measurement on PRB 401 and 402.
  • PRB 401 is anchor PRB and PRB 402 is non-anchor PRB.
  • both PRB 401 and 402 is non-anchor PRB.
  • PRB 401 is non-anchor PRB
  • PRB 402 is anchor PRB.
  • the PRB index used for NRSTD measurement on serving cell is exactly same as the PRB index used for data transmission, and the PRB may be anchor PRB or non-anchor PRB.
  • carrier frequency switching is not required at UE side when performing serving cell NRSTD measurement.
  • a measurement gap is also required for the UE to perform NRSTD measurement.
  • Figure 5 illustrates a use case of NRSTD measurement gap on intra-frequency neighboring cell in accordance with embodiments of the current invention.
  • the PRB index used for RSTD measurement on intra-frequency neighboring cell is different from the PRB index for data transmission on serving cell.
  • NPRS subframe is configured on PRB 501 of neighboring cell for a UE.
  • NPDCCH/NPDSCH is scheduled on PRB 502 of serving cell for the UE.
  • the center carrier frequency of neighboring cell is the same as that of serving cell at eNB side.
  • a measurement gap is required for the UE to perform NRSTD measurement on PRB 501 of neighboring cell.
  • PRB 501 is anchor PRB and PRB 502 is non-anchor PRB. In another example, both PRB 501 and 502 is non-anchor PRB. In yet another example, PRB 501 is non-anchor PRB, and PRB 502 is anchor PRB.
  • the PRB index used for NRSTD measurement on intra-frequency neighboring cell is same as the PRB index for data transmission on serving cell.
  • carrier frequency switching is not required at UE side when performing neighboring cell NRSTD measurement.
  • a measurement gap is also required for the UE to perform intra-frequency NRSTD measurement on neighboring cell.
  • introducing NRSTD measurement gap is used for two cases.
  • the first case is that carrier frequency switching is required when performing NRSTD measurement.
  • switching time should be included in NRSTD measurement gap, e.g. 1ms switching time is required for NB-IOT UE.
  • the second case is that UE cannot support simultaneous NRSTD measurement and data reception due to some limitation on buffer size and/or computation ability for low cost/complexity.
  • processing time of data reception and/or processing time of NRSTD measurement should be included in NRSTD measurement gap. For example, when receiver processing is switched to NRSTD measurement from data reception, processing time of data reception should be reserved in the front of NRSTD measurement gap.
  • processing time of NRSTD measurement should be reserved in the end of NRSTD measurement gap.
  • possible timing offset of NPRS subframe on different cells is included in NRSTD measurement gap when performing neighboring cell NRSTD measurement. And, 1ms is sufficient for the purpose of timing offset.
  • Figure 6 illustrates an example of NRSTD measurement gap including one NPRS occasion.
  • the length of NRSTD measurement gap 601 is larger than the length of NPRS occasion 602, and there are at least one reserved time for UE preparation at the two side of NRSTD measurement gap, e.g. time gap 603 and 604 before the starting subframe of NPRS occasion and after the ending subframe of NPRS occasion.
  • the reserved time should include one or multiple of following factors: carrier frequency switching time, possible timing offset, processing time of NRSTD measurement, and processing time of data reception.
  • the reserved time is at least 2ms. In another example, the reserved time is at least 10ms.
  • NRSTD measurement gap length is a predefined value, e.g. 10ms, 20ms, or 40ms. In another embodiment, NRSTD measurement gap length is configurable and selected from a predefined set.
  • Figure 7 illustrates an example of a NRSTD measurement gap including multiple repetitions of NPRS occasion in accordance with embodiments of the current invention.
  • NPRS occasion is repeated within a NPRS period to support some UE in worse coverage level.
  • the repetition number of NPRS occasion within a NPRS period should be configurable and depends on the maximum coverage level supported by the cell.
  • a configured NRSTD measurement gap should include multiple repetitions of NPRS occasion within a NPRS period, as illustrated in Figure 7.
  • the first level of NRSTD measurement gap length is for normal coverage (NC) , wherein the NRSTD measurement gap includes one NPRS occasion.
  • the second level of NRSTD measurement gap is for extended coverage (CE) , wherein the NRSTD measurement includes a middle level of repetitions of NPRS occasion.
  • the third level of NRSTD measurement gap is for extreme coverage, wherein the NRSTD measurement includes a large level of repetitions of NPRS occasion.
  • a short NRSTD measurement gap length can be configured.
  • a long measurement gap length can be configured.
  • the length of NRSTD measurement gap is determined by UE according to its coverage level. In another example, the length of NRSTD measurement gap is determined by eNB according to UE coverage level assuming the UE coverage level is known by eNB.
  • Figure 8 illustrates an example of a periodic pattern of NRSTD measurement gap.
  • NRSTD measurement gap occurs per period.
  • the period of NRSTD measurement gap is predefined.
  • the period of NRSTD measurement gap is configurable and selected from a predefined set.
  • the period of NRSTD measurement gap is related to NPRS period configured for NRSTD measurement, e.g. 160ms, 320ms, 640ms, or 1280ms.
  • Figure 9 illustrates a procedure of performing multiple NRSTD measurements on multiple cells in accordance with embodiments of the current invention.
  • UE sends a message to eNb to request a first NRSTD measurement gap for the first cell in step 910.
  • UE performs the first NRSTD measurement on the first cell.
  • UE sends a message to eNB to step the first NRSTD measurement gap when the measurement task is finished.
  • UE sends a message to eNb to request a second NRSTD measurement gap for a second cell.
  • step 950 UE performs the second NRSTD measurement on the second cell.
  • step 960 UE sends a message to eNB to stop the second NRSTD measurement gap when the measurement task of the second cell is finished.
  • a message to stop NRSTD measurement gap should be sent by UE to eNB if NRSTD measurement task is finished, i.e. the step 930 and step 960.
  • a NRSTD measurement gap corresponds to one special offset of NPRS subframe, i.e., the occurrence time of NRSTD measurement gap should be matched to time resources location of the NPRS subframe used for NRSTD measurement.
  • multiple NRSTD measurements on different cells are necessary. If NPRS subframe on the multiple cells are not aligned, i.e., the location of NPRS subframe is different, the multiple NRSTD measurements require multiple NRSTD measurement gap. If NPRS subframe on the multiple cells are aligned, i.e. the location of NPRS subframe is the same, the multiple NRSTD measurements can share one NRSTD measurement gap. Thus, only one NRSTD measurement gap is requested when performing the multiple NRSTD measurements.
  • the location of NPRS subframe is not aligned for the two cells.
  • the center carrier frequency of the two cells is the same, i.e. intra-frequency.
  • the PRB index for NRSTD measurement is different for the two cells.
  • the center carrier frequency of the two cells is different, i.e. inter-frequency.
  • Figure 10 illustrates an example of a one-off pattern of NRSTD measurement gap with an ultra-long gap length.
  • multiple NRSTD measurements on multiple cells are performed during the long NRSTD measurement gap 1001.
  • UE needn’ t send a message to eNB to stop measurement gap, i.e. in step 930 and 960 of figure 9.
  • the multiple NRSTD measurement tasks should be ensured to be finished during the ultra-long measurement gap.
  • Figure 11 illustrates a procedure of configuring a NRSTD measurement gap for a UE, comprising: sending a message to eNB by the UE to start a NRSTD measurement gap for a cell in step 1110, wherein the cell is serving cell or intra-frequency neighboring cell; receiving RRCConnectionReconfiguration on the requested NRSTD measurement gap by the UE in step 1120; performing NRSTD measurement on the cell during the measurement gap and no any signal transmission/reception in step 1130; sending a message to eNB to stop the NRSTD measurement gap if the measurement task is finished in step 1140.
  • eNB is not aware of an OTDOA measurement request, since the measurement request via LPP (LTE Positioning Protocol) is transparent to eNB.
  • LPP LTE Positioning Protocol
  • eNB In order to configure a NRSTD measurement gap for a given UE when performing NRSTD measurement, eNB has to be aware of whether an OTDOA positioning measurement is requested by E-SMLC (Evolved Serving Mobile Location Center) for this UE.
  • E-SMLC Evolved Serving Mobile Location Center
  • a UE-triggered measurement gap request message is sent by UE to eNB. If LPP layer indicates to start performing NRSTD measurement, and the UE requires a measurement gap for the NRSTD measurement while measurement gap is either not configured or not sufficient, a message to request NRSTD measurement gap should be sent by the UE to eNB. If the measurement task is finished, a message to stop NRSTD measurement gap should be send by the UE to eNB.
  • eNB is aware of an OTDOA measurement request, e.g. some signaling is exchanged between eNB and E-SMLC.
  • E-SMLC needs to send a message to eNB to make eNB be aware of an OTDOA measurement requested by E-SMLC for this UE.
  • An eNB-triggered measurement gap configuring message is sent by eNB to the UE.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne des procédés d'intervalle de mesure de RSTD de positionnement OTDOA à bande étroite. Certains modes de réalisation de l'invention concernent un procédé permettant à un équipement utilisateur (UE) de prendre en charge un positionnement OTDOA à bande étroite, consistant en outre à : recevoir une configuration d'intervalle de mesure de NRSTD pour une cellule, la cellule étant une cellule de desserte ou une cellule voisine intra-fréquence ; réaliser une mesure de RSTD sur la cellule pendant l'intervalle de mesure et aucune autre émission/réception de signal. Dans un exemple, la longueur de l'intervalle de mesure est prédéfinie. Dans un autre exemple, la longueur de l'intervalle de mesure est configurable. Dans un exemple, l'intervalle de mesure est périodique. Dans un autre exemple, l'intervalle de mesure est unique. Dans un exemple, l'intervalle de mesure est déclenché par l'UE. Dans un autre exemple, l'intervalle de mesure est déclenché par l'eNB.
PCT/CN2016/104678 2016-11-04 2016-11-04 Procédé d'intervalle de mesure de rstd pour positionnement otdoa à bande étroite WO2018082032A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/104678 WO2018082032A1 (fr) 2016-11-04 2016-11-04 Procédé d'intervalle de mesure de rstd pour positionnement otdoa à bande étroite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/104678 WO2018082032A1 (fr) 2016-11-04 2016-11-04 Procédé d'intervalle de mesure de rstd pour positionnement otdoa à bande étroite

Publications (1)

Publication Number Publication Date
WO2018082032A1 true WO2018082032A1 (fr) 2018-05-11

Family

ID=62076018

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/104678 WO2018082032A1 (fr) 2016-11-04 2016-11-04 Procédé d'intervalle de mesure de rstd pour positionnement otdoa à bande étroite

Country Status (1)

Country Link
WO (1) WO2018082032A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111262671A (zh) * 2019-01-18 2020-06-09 维沃软件技术有限公司 测量间隔的处理方法、网络设备、终端设备和存储介质
WO2020138926A1 (fr) * 2018-12-24 2020-07-02 엘지전자 주식회사 Procédé et appareil d'émission et de réception de signaux par un terminal de liaison latérale dans un système de communication sans fil
GB2583063A (en) * 2019-02-15 2020-10-21 Samsung Electronics Co Ltd Methods and apparatus for enhancing the configurability of 5G new radio positioning reference signals
WO2022090608A1 (fr) * 2020-11-02 2022-05-05 Nokia Technologies Oy Reconfiguration préemptive de motif d'intervalle de mesure permettant une faible latence de positionnement
JP2022530904A (ja) * 2019-04-29 2022-07-04 維沃移動通信有限公司 Ｐｒｓリソース配置方法、測定間隔配置方法及び関連機器
WO2022206858A1 (fr) * 2021-03-31 2022-10-06 Essen Innovation Company Limited Procédé de mesure de cellule et équipement utilisateur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103039108A (zh) * 2010-05-10 2013-04-10 瑞典爱立信有限公司 用于支持频率间测量的方法和设备
CN105850055A (zh) * 2013-12-26 2016-08-10 联发科技（新加坡）私人有限公司 具有多天线系统基于定位的波束成形方法
US20160234707A1 (en) * 2015-02-05 2016-08-11 Telefonaktiebolaget L M Ericsson (Publ) Measurement procedure under adaptive frequency separation
WO2016124547A1 (fr) * 2015-02-02 2016-08-11 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil d'émission et de réception de signaux dans une bande de fréquences

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103039108A (zh) * 2010-05-10 2013-04-10 瑞典爱立信有限公司 用于支持频率间测量的方法和设备
CN105850055A (zh) * 2013-12-26 2016-08-10 联发科技（新加坡）私人有限公司 具有多天线系统基于定位的波束成形方法
WO2016124547A1 (fr) * 2015-02-02 2016-08-11 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil d'émission et de réception de signaux dans une bande de fréquences
US20160234707A1 (en) * 2015-02-05 2016-08-11 Telefonaktiebolaget L M Ericsson (Publ) Measurement procedure under adaptive frequency separation

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020138926A1 (fr) * 2018-12-24 2020-07-02 엘지전자 주식회사 Procédé et appareil d'émission et de réception de signaux par un terminal de liaison latérale dans un système de communication sans fil
US11770782B2 (en) 2018-12-24 2023-09-26 Lg Electronics Inc. Method and apparatus for transmitting and receiving signals by side link terminal in wireless communication system
CN111262671A (zh) * 2019-01-18 2020-06-09 维沃软件技术有限公司 测量间隔的处理方法、网络设备、终端设备和存储介质
CN111262671B (zh) * 2019-01-18 2021-11-12 维沃软件技术有限公司 测量间隔的处理方法、网络设备、终端设备和存储介质
GB2583063A (en) * 2019-02-15 2020-10-21 Samsung Electronics Co Ltd Methods and apparatus for enhancing the configurability of 5G new radio positioning reference signals
JP2022530904A (ja) * 2019-04-29 2022-07-04 維沃移動通信有限公司 Ｐｒｓリソース配置方法、測定間隔配置方法及び関連機器
EP3965347A4 (fr) * 2019-04-29 2022-09-28 Vivo Mobile Communication Co., Ltd. Procédé d'attribution de ressource prs, procédé de configuration d'écart de mesure, et dispositif associé
JP7252377B2 (ja) 2019-04-29 2023-04-04 維沃移動通信有限公司 Ｐｒｓリソース配置方法、測定間隔配置方法及び関連機器
WO2022090608A1 (fr) * 2020-11-02 2022-05-05 Nokia Technologies Oy Reconfiguration préemptive de motif d'intervalle de mesure permettant une faible latence de positionnement
WO2022206858A1 (fr) * 2021-03-31 2022-10-06 Essen Innovation Company Limited Procédé de mesure de cellule et équipement utilisateur

Similar Documents

Publication Publication Date Title
EP3635995B1 (fr) Mesure d'emtc-u
US10292132B2 (en) Method and apparatus of enhanced paging
CN110999194B (zh) 通信系统
US11432117B2 (en) Multiplexing of physical sidelink control channel (PSCCH) and physical sidelink shared channel (PSSCH)
RU2734656C2 (ru) Терминальное устройство, устройство базовой станции и способ связи
CN109644450B (zh) 时频资源传输方向的配置方法和装置
WO2018082032A1 (fr) Procédé d'intervalle de mesure de rstd pour positionnement otdoa à bande étroite
CN113207110B (zh) 配置信息的传输方法和终端设备
US20220182200A1 (en) Methods and apparatus for configuring 5g new radio uplink positioning reference signals
WO2018127339A1 (fr) Dispositifs et procédés de communication
TWI640215B (zh) 經由錨定載波的小區存取方法和裝置
CN110740516A (zh) 用于在免授权频带中发送上行链路信道的方法和装置
CN111867074A (zh) 接收数据和发送数据的方法、通信装置
CN114340014B (zh) 随机接入的方法和设备
KR20200120522A (ko) 측위를 위한 참조신호를 송수신하는 방법 및 장치
EP4038997A1 (fr) Détection et gestion de procédé pour bloc de signal de synchronisation et de canal de diffusion physique
US10306646B2 (en) Method for device-to-device communication, base station and user equipment
CN112997556B (zh) 传输信号的方法及设备
WO2018224148A1 (fr) Dispositif de communication et procédé d'indication d'une préférence selon une consommation d'énergie d'un dispositif ou une performance de porteuses
CN117897925A (zh) 用于具有有限能力的用户设备的定位
CN114557109A (zh) 通信方法和用户设备
CN114073146A (zh) 一种发送波束失败恢复请求的方法及装置
US12010728B2 (en) Random access method and device
CN117461277A (zh) 无线通信的方法、终端设备和网络设备
KR20160054396A (ko) 비면허 대역을 통한 데이터 전송 방법 및 장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16920476

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16920476

Country of ref document: EP

Kind code of ref document: A1