WO2017030481A1 - Premier dispositif de communication, second dispositif de communication et procédés associés, pour adapter une procédure radio - Google Patents

Premier dispositif de communication, second dispositif de communication et procédés associés, pour adapter une procédure radio Download PDF

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Publication number
WO2017030481A1
WO2017030481A1 PCT/SE2016/050711 SE2016050711W WO2017030481A1 WO 2017030481 A1 WO2017030481 A1 WO 2017030481A1 SE 2016050711 W SE2016050711 W SE 2016050711W WO 2017030481 A1 WO2017030481 A1 WO 2017030481A1
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WIPO (PCT)
Prior art keywords
cell
communication device
wireless device
carrier frequency
interruption
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PCT/SE2016/050711
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English (en)
Inventor
Muhammad Kazmi
Joakim Axmon
Mattias BERGSTRÖM
Imadur RAHMAN
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Telefonaktiebolaget Lm Ericsson (Publ)
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Publication of WO2017030481A1 publication Critical patent/WO2017030481A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0006—Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks

Definitions

  • the present disclosure relates generally to a first communication device and methods performed thereby for adapting a radio procedure in a wireless device.
  • the present disclosure also relates generally to the second communication device and methods performed thereby sending one or more parameters to the first communication device.
  • the present disclosure further relates generally to a computer program product, comprising instructions to carry out the actions described herein, as performed by the first communication device, or by the second communication device.
  • the computer program product may be stored on a computer-readable storage medium.
  • Communication devices such as terminals are also known as e.g. User Equipments (UE), mobile terminals, wireless terminals, wireless devices and/or mobile stations.
  • UE User Equipments
  • Terminals are enabled to communicate wirelessly in a cellular communications network or wireless communication system, sometimes also referred to as a cellular radio system or cellular network.
  • the communication may be performed e.g., between two terminals, between a terminal and a regular telephone and/or between a terminal and a server via a Radio Access Network (RAN) and possibly one or more core networks, comprised within the cellular communications network.
  • RAN Radio Access Network
  • Terminals may further be referred to as mobile telephones, cellular telephones, laptops, or tablets with wireless capability, just to mention some further examples.
  • the terminals in the present context may be, for example, portable, pocket-storable, hand- held, computer-comprised, or vehicle-mounted mobile devices, enabled to communicate voice and/or data, via the RAN, with another entity, such as another terminal or a server.
  • the cellular or wireless communications network covers a geographical area which may be divided into cell areas, wherein each cell area may be served by an access node such as a Base Station (BS), e.g. a Radio Base Station (RBS), which sometimes may be referred to as e.g. evolved NodeB "eNB”, “eNodeB”, “NodeB”, “B node”, or BTS (Base Transceiver Station), depending on the technology and terminology used.
  • the base stations may be of different classes such as e.g. macro eNodeB, home eNodeB or pico base station, based on transmission power and thereby also cell size.
  • a cell is the geographical area where radio coverage is provided by the base station at a base station site.
  • One base station, situated on the base station site, may serve one or several cells. Further, each base station may support one or several communication technologies. The base stations communicate over the air interface operating on radio frequencies with the terminals within range of the base stations.
  • the expression Downlink (DL) is used for the transmission path from the base station to the mobile station.
  • the expression Uplink (UL) is used for the transmission path in the opposite direction i.e., from the mobile station to the base station.
  • base stations which may be referred to as eNodeBs or even eNBs, may be directly connected to one or more core networks.
  • 3GPP LTE radio access standard has been written in order to support high bitrates and low latency both for uplink and downlink traffic. All data transmission is in LTE controlled by the radio base station.
  • CA Carrier Aggregation
  • the UE may be able to receive and/or transmit data to and from more than one serving cell.
  • a CA capable UE may be configured to operate with more than one serving cell.
  • the carrier of each serving cell is generally called a Component Carrier (CC).
  • the CC may be understood as an individual carrier in a multi-carrier system.
  • carrier aggregation (CA) is also called, e.g., may be interchangeably referred to as, "multi-carrier system", “multi-cell operation”, “multi-carrier operation”, “multi-carrier” transmission and/or reception. This means CA is used for transmission of signaling and data in the uplink and downlink directions.
  • the serving cell may be interchangeably called as Primary Cell (PCell) or primary serving cell (PSC).
  • the secondary serving cell may be interchangeably called Secondary Cell (SCell) or Secondary Serving Cell (SSC).
  • the primary or anchor CC may carry the essential UE specific signaling and is the carrier where the UE may perform radio link monitoring.
  • the primary CC which is also known as PCC or PCell, may exist in both uplink and downlink directions in CA. In case there is a single UL CC, the PCell may be on that CC.
  • the network may assign different primary carriers to different UEs operating in an area within radio coverage of the same sector or cell.
  • Figure 1 is a schematic diagram illustrating an example of 5 aggregated carriers, each of 20 MegaHertz (MHz), totaling 100 MHz.
  • UE may perform one or more radio measurements, which are simply referred to herein as measurements. This may be for different reasons, such as to allow a serving network node to evaluate the radio coverage or position of a UE it may be serving, or in order for the UE to detect neighboring cells during e.g., mobility procedures.
  • the measurements may be done by the UE on the serving one or more cells, multiple serving cells may be with CA, as well as on neighbor cells over some known reference symbols or pilot sequences.
  • the measurements may be done on cells on an intra-frequency carrier, inter-frequency carrier(s), as well as on inter-RAT carrier(s), depending upon the UE capability, that is, on whether it supports that RAT.
  • the UE may perform the measurements on the cells on the primary component carrier (PCC), as well as on the cells on one or more Secondary Component Carriers (SCCs).
  • PCC primary component carrier
  • SCCs Secondary Component Carriers
  • a CA capable UE may also perform inter- frequency measurements without measurement gaps, since a UE has a broadband receiver and/or multiple receivers.
  • a measurement gap may be understood as a pause or interruption in the communication of signals between a UE and the serving cell to allow the UE to perform one or more measurements on cells of one or more non-serving carriers e.g., inter-frequency carriers, or inter-RAT carriers.
  • RSRP Reference Symbol Received Power
  • RSRQ Reference Symbol Received Quality
  • Examples of intra-frequency and inter-frequency measurements in High-Speed Packet Access (HSPA) are Common Pilot Channel Received Signal Code Power (CPICH RSCP) and CPICH Ec/No.
  • CPICH Ec/No may be understood as the received energy per chip divided by the power density in the band.
  • a mobility measurement may also comprise identifying or detecting a cell, which may belong to LTE, HSPA, Code Division Multiple Access 2000 (CDMA2000), Global System for Mobile communications (GSM), etc...
  • the cell detection may comprise identifying at least the Physical Cell Identity (PCI), Primary Scrambling Code (PSC) or Base Station Identity Code (BSIC) of the detected cell, and subsequently performing the signal measurement, e.g., RSRP, RSCP, or Received Signal Strength Indicator (RSSI) of the identified cell.
  • the UE may also have to acquire the Cell Global IDentity (CGI) of a cell.
  • CGI Cell Global IDentity
  • the serving cell may request the UE to acquire the System Information (SI) of the target cell.
  • the SI may be read by the UE to acquire the CGI, which uniquely identifies a cell, of the target cell.
  • the UE may also be requested to acquire other information such as the Closed Subscriber Group (CSG) indicator, CSG proximity detection etc . , from the target cell.
  • CSG Closed Subscriber Group
  • RSTD Observed Time Difference Of Arrival
  • RX-TX UE Reception-Transmission
  • E- CID E- CID positioning method
  • the UE RX-TX time difference measurement may require the UE to perform a measurement on downlink reference signals, as well as on uplink transmitted signals.
  • Another example of positioning measurements is an UL Relative Time Of Arrival (RTOA), which may be performed in UL on radio signals, namely Sounding Reference Signals (SRS), transmitted by the UE.
  • RTOA UL Relative Time Of Arrival
  • SRS Sounding Reference Signals
  • a multi-carrier SCell setup herein refers to a procedure which may enable the network node to at least temporarily setup or release the use of a SCell, in DL and/or UL by a CA capable UE.
  • the SCell setup or release procedure or command may perform any one or more of: a) configuration of SCell(s) also known as SCell addition, b) de-configuration of SCell(s) also known as SCell release, c) activation of SCell(s), and d) deactivation of SCell(s).
  • the configuration procedure i.e., addition/release of a SCell
  • the serving radio network node e.g., an eNode B in LTE or a Node B in HSPA
  • the de-configuration procedure may be used by the eNode B to de-configure or remove one or more already configured SCells, such as a DL SCell, a UL SCell or both.
  • the configuration or de-configuration procedure may also be used to change the current multi-carrier configuration e.g., for increasing or decreasing the number of SCells, or for swapping the existing SCells with new ones.
  • the configuration and de-configuration may be done by the eNode B and by a Radio Network Controller Radio Network
  • RNC Radio Resource Control
  • the serving radio network node may activate one or more deactivated SCells or deactivate one or more SCells on the corresponding configured secondary carriers.
  • the PCell is always activated.
  • the configured SCells may be initially deactivated upon addition, and after a cell change, e.g., handover.
  • the activation and deactivation command may be sent by the Node B via the High Speed-Shared Control Channel (HS-SCCH).
  • the activation and deactivation command may be sent by the eNode B via Medium Access Control (MAC) control element (MAC-CE).
  • MAC Medium Access Control
  • the deactivation of a SCell saves UE battery power.
  • a SCell setup or release i.e., when a SCell is configured, de-configured, activated or deactivated, may cause a glitch or interruption of operation on the PCell or any other activated SCell.
  • the operation herein means reception and/or transmission on signals.
  • the glitch in UL and/or DL may typically occur when a UE has a single radio chain to receive and/or transmit more than one CC. However, the glitch may even occur when the UE has independent radio chains on the same chip.
  • the glitch mainly may occur when the Carrier Aggregation (CA) capable UE changes its reception and/or transmission bandwidth (BW) from single-carrier to multiple-carrier operation or vice versa.
  • CA Carrier Aggregation
  • BW transmission bandwidth
  • the UE may have to reconfigure its Radio Frequency (RF) components in the RF chain e.g., RF filter, power amplifier (PA), etc...
  • RF Radio Frequency
  • PA power amplifier
  • the interruption may vary between 2-5 milliseconds (ms).
  • the interruption may be caused due to several factors including RF tuning to reconfigure the BW, i.e., to shorten or extend it, setting or adjusting of radio parameter(s) such as an Automatic Gain Control (AGC) setting etc.
  • AGC Automatic Gain Control
  • an interruption on a PCell or activated SCell of up to 5 subframes is allowed for intra-band CA when any of the SCell setup or release procedure may be executed by the UE.
  • an interruption on PCell or activated SCell of up to 1 subframe is allowed for inter-band CA when any of the SCell setup or release procedure may be executed by the UE.
  • the UE may not receive from and/or transmit any signal or information to the network.
  • the UE may neither perform measurements due to its inability to receive and/or transmit signals. This may lead to the loss or dropping of packets transmitted between the UE and its serving cell(s). It should be noted that the interruption may impact several or all active carriers, and it may affect both the uplink and the downlink.
  • the UE may perform measurements even on a deactivated SCell or other cells on the SCC with a deactivated SCell. In this case, the measurements may be performed in measurement cycles configured by higher layers.
  • the Positioning Reference Signal (PRS) configuration for RSTD and SCell measurement cycle that may be used for mobility measurements, e.g., RSRP and RSRQ, are examples of a measurement cycle.
  • the SCell measurement cycles may have a periodicity of 160 ms, 320 ms, 640 ms or 1024 ms.
  • the maximum time of a measurement within each measurement cycle is currently not restricted by the standard, but in practice it is likely to be up to 6 subframes in each cycle.
  • the UE may typically retune its receiver.
  • the cells herein may be SCell and/or one or more neighbor cells of that SCC. Therefore, the interruption in DL and/or UL of the serving cell may occur before and after each measurement sample, i.e., when the bandwidth may be extended, e.g., from 20 MHz to 40 MHz, and also when it may be reverted back to the BW of the serving carriers, e.g., from 40 MHz to 20 MHz.
  • the interruption on the PCell or an activated SCell may also occur when a serving carrier and a SCC are on the same chip.
  • the interruption in each direction in this case may be between 2-5 ms, since the UE may have to retune the center frequency and the bandwidth of the downlink.
  • the UE may do measurements on cells of the SCC with deactivated SCell(s) on a regular basis according to the SCell measurement cycle configured by the eNB.
  • Figure 2 is a schematic diagram illustrating an interruption on a PCC due to measurements on one or more cells of a SCC with a deactivated SCell.
  • the Figure illustrates how the interruption (striped block) in DL and/or UL of the PCC occurs before and after each measurement sample (solid blocks).
  • LAA License-assisted access
  • the unlicensed spectrum e.g., in the 5-6 GigaHertz (GHz) range, such as between: 5150 MHz-5925 MHz, may be simultaneously used by multiple different technologies, e.g., between LTE and the Institute of Electrical and Electronics Engineers (IEEE) Wi-Fi.
  • the "Licensed-Assisted Access” (LAA) intends to allow LTE equipment to also operate in an unlicensed radio spectrum. Note that, the same LAA concept may be used in other spectrum, i.e., 3.5GHz in North America, too.
  • LAA mode devices may connect in the licensed spectrum, primary cell or PCell, and use carrier aggregation to benefit from additional transmission capacity in the unlicensed spectrum, secondary cell or SCell. Therefore, a UE may be configured with one or more SCells in the unlicensed spectrum.
  • LBT Listen-Before-Talk
  • Figure 3 is a schematic diagram illustrating LAA to unlicensed spectrum using LTE carrier aggregation.
  • the transmitter in unlicensed spectrum may need to listen on the carrier before it may start to transmit. If the medium is free, the transmitter may transmit, while if the medium is busy, e.g., some other node is transmitting, the transmitter may not transmit, and the transmitter may try again at a later time. This is referred to as Listen Before Talk (LBT). Therefore, the LBT procedure may enable a Clear Channel
  • CCA CCA Assessment
  • LBT may be performed periodically with a period equal to certain units of time; as an example one unit of time duration, i.e., 1 Transmission-Time Interval (TTI), 1 time slot, 1 subframe etc...
  • TTI Transmission-Time Interval
  • the duration of listening in LBT is typically in the order of a few to tens of [ sec.
  • each LTE subframe may be divided in two parts: in the first part, the listening may take place, and in the second part, the subframe may carry data if the channel is seen to be free.
  • the listening may occur at the beginning of the current subframe and may determine whether or not data transmission will continue in this subframe and a few following subframes. Hence, the data transmission in a subframe P until subframe P+n may be determined by the outcome of listening during the beginning of subframe P.
  • the number n may depend on system design and/or regulatory requirements.
  • the Discovery Reference Signal is any type of reference or pilot signal which may be pre-defined or pre-configured at the UE.
  • reference signals (DRS) in the downlink may be used for enabling the UE to perform functions such as channel estimation, synchronization to a cell, automatic frequency control, automatic gain control, and radio measurements.
  • radio measurements are cell search, RSRP/RSRQ measurements, positioning measurements, Channel State Information (CSI) measurements.
  • CSI measurements are a Channel Quality Indicator (CQI), a Rank Indicator (Rl), a Pre-coding Matrix Indicator (PMI) etc...
  • the transmissions of the DRS may occur in DRS occasions.
  • the signals comprising the DRS may include the Primary Synchronization Signal (PSS), the Secondary
  • the UE may be configured with a Discovery Protocol (SSS), the Cell-specific Reference Signals (CRS), the CSI- Reference Signal (CSI-RS) etc...
  • SSS Synchronization Signal
  • CRS Cell-specific Reference Signals
  • CSI-RS CSI- Reference Signal
  • Measurement Timing Configuration which may be understood as a time window within which the UE may receive the DRS.
  • the DMTC provides a window with a duration, also known as DRS occasion duration e.g., between 1 -6 ms, occurring with a certain periodicity and timing within which the UE may expect to receive discovery signals.
  • Examples of DRS periodicity may be 40, 80 or 160 ms.
  • DRS design for LAA e.g., in the context of 3GPP TR 36.889: 1) Subject to LBT, DRS may be transmitted in a fixed time position within the configured DMTC, and 2) Subject to LBT, DRS may be allowed to be transmitted in at least one of different time positions within the configured DMTC.
  • the two alternatives above are shown in Figure 4.
  • Figure 4 is a schematic diagram illustrating design options for DRS in LAA, according to 3GPP TR 36.889.
  • the first option above indicated in the Figure as Alt. 1 , shows that a DRS, represented in the Figure as a black rectangle, is transmitted in a fixed position within the configured DMTC, if the channel is found to be free after conducting LBT. This is the case of the DMTC furthest to the left and furthest to the right in Alt. 1.
  • the arrow in the horizontal axis represents time in the Figure. In the middle DMTC, the channel is found busy, as indicated, and the DRS is not transmitted.
  • the second option above indicated in the Figure as Alt.
  • a DRS represented in the Figure as a black rectangle
  • the transmission of the DRS may occur in different time positions within the DRS.
  • the DMTC furthest to the left transmission of the DRS occurs after conducting LBT and finding the channel to be free.
  • the channel is found to be busy for two different lengths of time. This is indicated in the Figure by the crossed rectangles having different widths in the time axis.
  • the DRS is then transmitted after the channel is found to be free.
  • LAA Long Term Evolution
  • standalone LTE may be understood as that, there may not be any licensed carrier to be aggregated with unlicensed carrier in standalone usage, while an unlicensed LTE is always aggregated with a licensed carrier in LAA operations.
  • Standalone operation means that, UL communications may also be allowed in LTE usage of unlicensed spectrum. Since there may not be any support from a licensed carrier, the standalone LTE system may be responsible for all functionalities in the unlicensed spectrum.
  • a UE may be capable of only using a single carrier, or be capable of aggregating more than one unlicensed carrier at the same time. In that case, both the PCell and the SCell(s) will be in unlicensed spectrum.
  • the unlicensed carrier may also be aggregated with a licensed carrier in dual connectivity manner.
  • Dual Connectivity may be understood as a special type of CA.
  • PCell Master eNB
  • SeNB Secondary eNB
  • the PCell and the PSCell may be functionally similar nodes. However activation/deactivation/configuration/deconfiguration of the PSCell is controlled by the PCell.
  • the connected nodes in DC operation are independent to each other, thus, all control signaling may be done in separate way.
  • Whichever the mode of operation may be, communications in aggregated carriers are degraded by interruptions of transmissions in one or more cells due to the operations in other cells used by a same wireless device.
  • the object is achieved by a method performed by a first communication device.
  • the method is for adapting a radio procedure in a wireless device.
  • the first communication device and the wireless device operate in a wireless communications network.
  • the first communication device adapts the radio procedure in the wireless device operating on a first cell on a first carrier frequency in the wireless communications network.
  • the radio procedure is for the wireless device to perform at least one radio operation on at least one cell operating on the first carrier frequency.
  • the adapting is based on one or more conditions related to an interruption of transmission of packets between the wireless device and a second cell.
  • the second cell is a serving cell of the wireless device operating on a second carrier frequency in the wireless communications network , wherein one of: a) the first carrier frequency belongs to a licensed band, and the second carrier frequency belongs to an unlicensed frequency band, and b) the first carrier frequency belongs to an unlicensed band, and the second carrier frequency belongs to a licensed frequency band.
  • the interruption of the transmission of packets is caused by the performing of the at least one radio operation.
  • the object is achieved by a method performed by the second communication device.
  • the method is for sending one or more parameters to the first communication device.
  • the first communication device and the second communication device operate in the wireless communications network.
  • the second communication device obtains the one or more parameters.
  • the one or more parameters are for the first communication device to adapt the radio procedure for the wireless device to perform the at least one radio operation on at least one cell operating on a first carrier frequency.
  • the wireless device has the first cell operating on the first carrier frequency. To adapt is based on the one or more conditions related to the interruption of transmission of packets between the wireless device and the second cell.
  • the second cell is a serving cell of the wireless device
  • the second cell operates on a second carrier frequency in the wireless communications network, wherein one of: a) the first carrier frequency belongs to a licensed band, and the second carrier frequency belongs to an unlicensed frequency band, and b) the first carrier frequency belongs to an unlicensed band, and the second carrier frequency belongs to a licensed frequency band.
  • the interruption of the transmission of packets is caused by the performing of the at least one radio operation.
  • the second communication device sends the obtained one or more parameters to the first communication device.
  • the object is achieved by the first communication device configured to adapt the radio procedure in the wireless device.
  • the first communication device and the wireless device are configured to operate in the wireless communications network.
  • the first communication device is configured to adapt the radio procedure in the wireless device arranged to operate on the first cell on the first carrier frequency in the wireless communications network.
  • the radio procedure is configured to be for the wireless device to perform the at least one radio operation on the at least one cell configured to operate on the first carrier frequency.
  • To adapt is configured to be based on the one or more conditions related to the interruption of transmission of packets between the wireless device and the second cell.
  • the second cell is configured to be a serving cell of the wireless device configured to operate on the second carrier frequency in the wireless communications network, wherein one of: a) the first carrier frequency is configured to belong to a licensed band, and the second carrier frequency is configured to belong to an unlicensed frequency band, and b) the first carrier frequency is configured to belong to an unlicensed band, and the second carrier frequency is configured to belong to a licensed frequency band.
  • the interruption of the transmission of packets is configured to be caused by the performing of the at least one radio operation.
  • the object is achieved by the second communication device configured to send the one or more parameters to the first communication device.
  • the first communication device and the second communication device are configured to operate in the wireless communications network.
  • the second communication device is further configured to obtain the one or more parameters.
  • the one or more parameters are for the first communication device to adapt the radio procedure.
  • the radio procedure is configured to be for the wireless device to perform the at least one radio operation on the at least one cell configured to operate on the first carrier frequency.
  • the wireless device has the first cell arranged to operate on the first carrier frequency. To adapt is based on the one or more conditions related to the interruption of transmission of packets between the wireless device and the second cell.
  • the second cell is configured to be a serving cell of the wireless device.
  • the second cell is further configured to operate on the second carrier frequency in the wireless communications network, wherein one of: a) the first carrier frequency is configured to belong to a licensed band, and the second carrier frequency is configured to belong to an unlicensed frequency band, and b) the first carrier frequency is configured to belong to an unlicensed band, and the second carrier frequency is configured to belong to a licensed frequency band.
  • the interruption of the transmission of packets is configured to be caused by the performing of the at least one radio operation.
  • the second communication device is also configured to send the obtained one or more parameters to the first communication device.
  • the object is achieved by a computer program.
  • the computer program comprises instructions which, when executed on at least one processor, cause the at least one processor to carry out the method performed by the first communication device.
  • the object is achieved by computer-readable storage medium.
  • the computer-readable storage medium has stored thereon a computer program comprising instructions which, when executed on at least one processor, cause the at least one processor to carry out the method performed by the first communication device.
  • the object is achieved by a computer program.
  • the computer program comprises instructions which, when executed on at least one processor, cause the at least one processor to carry out the method performed by the second communication device.
  • the object is achieved by computer-readable storage medium.
  • the computer-readable storage medium has stored thereon a computer program comprising instructions which, when executed on at least one processor, cause the at least one processor to carry out the method performed by the second communication device.
  • the first communication device adapting the radio procedure based on the one or more conditions, e.g., to ensure that, during the performing of the at least one radio operation, the one or more conditions are met, e.g., in the second, serving, cell, the first communication device may be enabled to gain control over the quality of the
  • the first communication device may limit or avoid interruption or loss of packets transmitted between the wireless device and the serving or cells.
  • the second communication device by obtaining the one or more parameters to adapt the radio procedure, and sending them to the first communication device, it may be enabled to gain control over the quality of the communication between the wireless device and its serving cell or cells in licensed and unlicensed spectrum, to improve the quality.
  • Figure 1 is a schematic diagram illustrating CA.
  • Figure 2 is a schematic diagram illustrating interruption on a PCC due to measurements on one or more cells of a SCC with a deactivated SCell.
  • Figure 3 is a schematic diagram illustrating LAA to unlicensed spectrum using LTE carrier aggregation.
  • Figure 4 is a schematic diagram illustrating design options for DRS in LAA.
  • Figure 5 is a schematic diagram illustrating embodiments of a wireless communications network, according to embodiments herein.
  • Figure 6 is a flowchart depicting embodiments of a method in a first communication
  • Figure 7 is a schematic diagram illustrating an example of embodiments of a method in a second communication device, according to embodiments herein.
  • Figure 8 is a schematic block diagram illustrating embodiments of a first communication device, according to embodiments herein.
  • Figure 9 is a schematic block diagram illustrating embodiments of a second
  • non-limiting term UE is used.
  • the UE herein may be any type of wireless device capable of communicating with a network node or another UE over radio signals.
  • the UE may also be radio communication device, target device, device to device UE, machine type UE or UE capable of machine to machine communication, a sensor equipped with UE, Tablet, mobile terminals, smart phone, laptop embedded equipped (LEE), laptop mounted equipment (LME), USB dongles, Customer Premises Equipment (CPE) etc.
  • LEE laptop embedded equipped
  • LME laptop mounted equipment
  • CPE Customer Premises Equipment
  • radio network node or simply “network node (NW node)
  • NW node may be any kind of network node which may comprise of base station, radio base station, base transceiver station, Base Station Controller (BSC), network controller, evolved Node B (eNB), Node B, RNC, relay node, positioning node, E-SMLC, location server, repeater, access point, radio access point, Remote Radio Unit (RRU), Remote Radio Head (RRH), Multi-Standard Radio (MSR), radio node such as MSR BS nodes in Distributed Antenna System (DAS), Self Organizing Network (SON) node, Operational and Maintenance (O&M), Operational Support Systems (OSS), Minimization of Drive Test (MDT) node, Core network node, Mobility Management Entity (MME), etc.
  • DAS Distributed Antenna System
  • SON Self Organizing Network
  • O&M Operational and Maintenance
  • OSS Operational Support Systems
  • MDT Minimization of Drive Test
  • one or more CCs may belong to an unlicensed frequency band, e.g. 5 GHz range, which may be shared between multiple wireless devices of different operators.
  • a UE may also be configured with one or more CCs belonging to a licensed frequency band e.g., PCell on licensed band.
  • serving cell performance in terms of packet loss rate of packets transmitted between the UE and the serving cell, e.g. , PCell, activated SCell etc, are specified only for the licensed CCs.
  • the UE behavior in terms of serving cell performance when the UE is configured with the CCs belonging to both licensed and unlicensed bands is unspecified. The lack of such behavior will adversely affect the scheduling of packets and may lead to unpredictable UE transmission and reception performance, e.g., due to the interruption of transmission of packets caused by the performing of certain radio operations.
  • Embodiments herein may relate to serving cell interruption procedure in LAA.
  • eNodeB and UE should be considering non- limiting and does in particular not imply a certain hierarchical relation between the two; in general "eNodeB” could be considered as device 1 and “UE” device 2, and these two devices communicate with each other over some radio channel.
  • eNodeB could be considered as device 1 and "UE” device 2
  • these two devices communicate with each other over some radio channel.
  • FIG. 5 depicts an example of a wireless communications network 100, sometimes also referred to as a cellular radio system, cellular network or wireless communications system, in which embodiments herein may be implemented.
  • the wireless communications network 100 may for example be a network such as a Long- Term Evolution (LTE), e.g. LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), LTE Half-Duplex Frequency Division Duplex (HD-FDD), LTE operating in an unlicensed band, WCDMA, Universal Terrestrial Radio Access (UTRA) TDD, GSM network, GERAN network, Ultra-Mobile Broadband (UMB), EDGE network, network comprising of any combination of Radio Access Technologies (RATs) such as e.g.
  • RATs Radio Access Technologies
  • the wireless communications network 100 comprises a plurality of communication devices, such as the first communication device 101 , and the second communication device 102. Any of the first communication device 101 and the second communication device 102 may be a network node such as network node 1 10 described below, or a wireless device such as wireless device 120 described below.
  • the first communication device 101 is different than the second communication device 102.
  • the first communication device 101 will be the wireless device 120 and the second communication device 102 will be the network node 1 10. This corresponds to the non- limiting particular example illustrated in Figure 5.
  • the first communication device 101 may be the wireless device 120 and the second communication device 102 may be the network node 1 10.
  • D2D Device to Device
  • the wireless communications network 100 comprises a plurality of network nodes whereof the network node 110 is depicted in Figure 5.
  • the network node 1 10 may be a transmission point such as a radio base station, for example an eNB, an eNodeB, or an Home Node B, an Home eNode B or any other network node capable to serve a wireless device, such as a user equipment or a machine type communication device in the wireless communications network 100.
  • the wireless communications network 100 covers a geographical area which, which in some embodiments may be divided into cell areas, wherein each cell area is served by a network node, although, one network node may serve one or several cells.
  • the network node 1 10 serves, operates or manages a first cell 131 , which in some embodiments may be a first serving cell 131 , and which may be a secondary cell, also referred to herein as SCelM .
  • the network node 1 10 also serves, operates or manages a second cell 132 or second serving cell 132, which may be another secondary cell 132, also referred to herein as SCell2 or second SCell 132.
  • the network node 1 10 also serves a third cell or third serving cell 133, which may be a primary cell 132, also referred to herein as PCell.
  • the first cell 131 operates on a first carrier frequency 141 , also referred to herein as SCC1.
  • the first carrier frequency 141 may belong to a licensed frequency band or to an unlicensed frequency band.
  • the second serving cell 132 operates on a second carrier frequency 142, also referred to herein as SCC2.
  • the second carrier frequency 142 may belong to unlicensed spectrum or to licensed spectrum.
  • the third serving cell 133 operates on a third carrier frequency 143.
  • the third carrier frequency 143 may belong to licensed spectrum and may be referred to herein as PCC.
  • At least one cell 134 belongs to the first carrier frequency 141.
  • the at least one cell 134 may be any cell including the first serving cell 131 , or the first cell 131 , and any neighbour/non-serving cell on the first carrier frequency 141. To simplify the figure, the at least one cell 134 is the same as the first serving cell 131 in the non-limiting example of Figure 5. Other alternatives to those of the non-limiting example of Figure 5 are discussed further down.
  • the network node 100 may be of different classes, such as, e.g., macro eNodeB, home eNodeB or pico base station, based on transmission power and thereby also cell size.
  • the wireless communications network 100 may comprise more cells similar to the first cell 131 , the second cell 132 and the third cell, served by their respective network node.
  • any of the network node 1 10 may serve receiving nodes with serving beams.
  • the network node 1 10 may support one or several communication technologies, and its name may depend on the technology and terminology used.
  • the network node 1 10, which may be referred to as eNodeBs or even eNBs, may be directly connected to one or more core networks.
  • a wireless device 120 also referred to herein as a user equipment or UE is located in the wireless communication network 100.
  • the wireless device 120 may e.g. is a wireless communication device such as a UE which is also known as e.g. mobile terminal, wireless terminal and/or mobile station, a mobile telephone, cellular telephone, or laptop with wireless capability, just to mention some further examples.
  • the wireless device 120 may be, for example, portable, pocket-storable, hand-held, computer-comprised, or a vehicle-mounted mobile device, enabled to communicate voice and/or data, via the RAN, with another entity, such as a server, a laptop, a Personal Digital Assistant (PDA), or a tablet computer, sometimes referred to as a surf plate with wireless capability, Machine- to-Machine (M2M) device, device equipped with a wireless interface, such as a printer or a file storage device, modem, or any other radio network unit capable of communicating over a wired or radio link in a communications system.
  • M2M Machine- to-Machine
  • the wireless device 120 is enabled to communicate wirelessly in the wireless communications network 100.
  • the first communication device 101 is configured to communicate within the wireless communications network 100 with the second communication device 102 over a first radio link in the first cell 131 , and over a second radio link in the second cell 132, and over a third radio link in the third cell 133, each represented in Figure 5 by each of the aforementioned first carrier frequency 141 , second carrier frequency 142 and third carrier frequency 143.
  • first”, “second”, and/or “third”, may be understood to be an arbitrary way to denote different entities, and may be understood to not confer a cumulative or chronological character to the nouns they modify.
  • the method may comprise one or more of the following actions. In some embodiments all the actions may be performed. In some embodiments, one or more actions may be performed. One or more embodiments may be combined, where applicable. All possible combinations are not described to simplify the description. In Figure 6, optional actions are indicated with dashed lines. Action 601
  • the wireless device 120 may perform at least one radio operation on the at least one cell 134 operating on the first carrier frequency 141 , wherein performance of the at least radio operation causes interruption of a transmission of packets between the wireless device 120 and the second cell 132, the second cell 132 being a serving cell of the wireless device 120 operating on the second carrier frequency 142.
  • the at least one radio operation may for example be: a) one or more radio measurements on the at least one cell 134 operating on the first carrier frequency 141 with the first cell 131 , the first cell being deactivated, and b) a setup or release operation of the at least one cell 134 on the first carrier frequency 141 , e.g., any of activation, deactivation, addition, release configuration, de-configuration etc.
  • the at least one cell 134 may be a secondary cell of the wireless device 120 or a non-serving cell of the wireless device 120, which may also be known as a neighbor cell of the wireless device 120.
  • the at least one radio operation may be performed while operating in the first cell 131 , and the at least one radio operation may comprise at least one of: a) performing one or more radio measurements on cells of the first carrier frequency 141 , b) configuration of the first cell 131 , c) deconfiguration of the first cell 131 , d) activation of the first cell 131 , and d) deactivation of the first cell 131.
  • the first communication device 101 may, in this Action, receive a message from the second communication device 102 to perform at least one radio operation on the at least one cell 134 operating on the first carrier frequency 141.
  • the second communication device 102 operates in the wireless communications system 100.
  • the second communication device 102 may be e.g., the network node 1 10, and the message may be, e.g., an RRC message.
  • the first cell 131 may be a first serving cell of the wireless device 120. In such embodiments, the message from the second communication device
  • the 102 may be to perform the at least one operation on the at least one cell 134 operating on the first carrier frequency 141 with the first serving cell 131.
  • the first cell 131 may or may not be in deactivated state.
  • the performance of the at least one radio operation may cause an interruption of transmission of packets between the wireless device 120, and another cell which may serve the wireless device 120. Therefore, in some embodiments, the first communication device 101 may, in this Action, determine that the wireless device 120 is configured with the second cell 132. The determining may be performed, e.g., by observing whether signals are transmitted between the wireless device 120 and the second cell 132, based 5 on stored information in the wireless device 120 about configured serving cells, based on configuration information about configured cells received from the network node 1 10, etc.
  • the second cell 132 may be a serving cell, e.g., the second serving cell 132, of the wireless device 120 operating on the second carrier frequency 142.
  • the second carrier frequency 142 may belong to an unlicensed frequency band or to a licensed frequency 10 band. The determining in this Action may be done, for example, upon receiving the
  • the first communication device 101 may be the wireless device 120. In other embodiments, the first communication device 101 may be another communication device, e.g., the network node 1 10.
  • the performance of the at least one radio operation may cause an interruption of transmission of packets between the wireless device 120, and another cell may serve the wireless device 120, the first communication device 101 may, in this
  • the 20 Action determine that the wireless device 120 is configured with at least the third cell 133 operating in the wireless communications system 100.
  • the determining in this Action 603 may be performed similarly to how the determining is performed in Action 602.
  • the third cell 133 may be a serving cell of the wireless device 120 operating on the third carrier frequency 143 belonging to a licensed frequency band.
  • the 25 101 may, in some embodiments, be the wireless device 120.
  • the first communication device 101 may be another communication device, e.g., the network node 1 10.
  • the first communication device 101 may need to adapt a radio procedure in the wireless device 120 to perform the at least one radio operation, as will be described in the next Action 605.
  • the radio procedure may be such that its adaptation may affect the performance of the at least one radio operation.
  • Examples of the radio procedure may be a receiver configuration of an SCC1 receiver, a transmitter configuration of an SCC1 transmitter, an RF filter configuration, a DIGital Radio Frequency to baseband InterFace (DIGRFIF) data rate reconfiguration, an Analog-to-Digital Converter (ADC) sampling rate reconfigurations to avoid spurs, that is, harmonics from other CCs polluting SCC1 , and vice versa, etc.
  • DIGRFIF DIGital Radio Frequency to baseband InterFace
  • ADC Analog-to-Digital Converter
  • the first communication device 101 may, in this Action, obtain one or more parameters for adapting the radio procedure.
  • the one or more parameters may be one or more variables affecting the radio procedure. Examples of the one or more parameters will be provided below, when the adaptation of the radio procedure is described in relation to Action 605.
  • the obtaining of the one or more parameters may be from one of: the first communication device 101 and the second communication device 102.
  • the first communication device 101 may obtain the one or more parameters by receiving the one or more parameters from another communication device in the wireless communications network 100, such as from the second communication device 102, e.g., the network node 1 10.
  • the obtaining in this Action 604 may comprise the first communication device 101 determining autonomously the one or more parameters.
  • the interruption of signals between the wireless device 120 and the second cell 120, the serving cell may lead to loss or degradation of performance of the serving cell.
  • the performance of the second cell 132 may be subject to one or more conditions, e.g., certain performance requirements.
  • the first communication device 101 adapts the radio procedure in the wireless device 120 operating on the first cell 131 on the first carrier frequency 141 in the wireless communications system 100.
  • the radio procedure is for the wireless device 120 to perform the at least one radio operation on the at least one cell 134 operating on the first carrier frequency 141.
  • the at least one cell 134 may be the first cell 131 or a neighbor cell within the radio range of the wireless device 120.
  • the interruption of the transmission of packets is caused by the performing of the at least one radio operation.
  • the adapting is based on a type of spectrum of the first carrier frequency 141 and the second carrier frequency 142. This is because, as explained in the background section, the interruption may occur when the wireless device 120 may have to reconfigure its RF components in the RF chain in order to change the BW from a licensed frequency band to an unlicensed frequency band, and viceversa.
  • Adapting may comprise modifying or changing the radio procedure. In some embodiments, this may be based on the one or more parameters that may be obtained in Action 603. Examples of such adaptations may be e.g., adjusting an RF filter to suppress or minimize emissions from the transmitter at the receiver of the second cell 132, SCell2, performing receiver configuration over a shorter time, e.g., within 100 ⁇ , to reduce interruption time at the receiver of the SCell2 etc.
  • the adapting is based on one or more conditions related to an interruption of transmission of packets between the wireless device 120 and the second cell 132.
  • the adapting the radio procedure may in fact be performed to ensure that, during the performing of the at least one radio operation, the one or more conditions are met, e.g., in at least one of: the second serving cell 132 and the third serving cell 133.
  • the one or more conditions may therefore be further related to the interruption of transmission of packets between the wireless device 120 and the third cell 133. This may be for example, in embodiments wherein the second carrier frequency 142 belongs to an unlicensed frequency band, and the third cell 133 operates on the third carrier frequency 143 belonging to a licensed frequency band.
  • the one or more conditions may be related to certain serving cell performance targets associated with the unlicensed band and licensed band of any of the second cell 132 and the third cell 133.
  • the one or more conditions may comprise at least one of: a) an interruption probability of missed Acknowledgement/Negative
  • Acknowledgement (A/N) related to packets transmitted between the wireless device 120 and the second cell 132 does not exceed a first threshold, such as a first interruption threshold, in interruption probability; b) an interruption probability of missed A/N related to packets transmitted between the wireless device 120 and the third cell 133 does not exceed a second threshold, such as a second interruption threshold, in interruption probability; c) a length of interruption in time related to packets transmitted between the wireless device 120 and the second cell 132 does not exceed a first threshold in length interruption; and d) a length of interruption in time related to packets transmitted between the wireless device 120 and the third cell 133 does not exceed a second threshold in length interruption.
  • a first threshold such as a first interruption threshold, in interruption probability
  • an interruption probability of missed A/N related to packets transmitted between the wireless device 120 and the third cell 133 does not exceed a second threshold, such as a second interruption threshold, in interruption probability
  • the obtaining in Action 604 may comprise obtaining the one or more parameters, such as one or more threshold parameters, for the adapting of the radio procedure in this Action 605.
  • the adapting 604 the radio procedure may comprise selecting one or more parameters.
  • the adapting 604 the radio procedure may comprise configuring the wireless device 120 with the selected one or more parameters.
  • the radio procedure may be a Listen-Before- Talk procedure
  • the one or more conditions may comprise minimizing a loss of packets transmitted between the wireless device 120 and the second cell 132 during the at least one radio operation.
  • the first communication device 101 may, perform the at least one radio operation, e.g., based on the adapted radio procedure.
  • some embodiments herein may relate to a method in the first communication device 101 for performing at least one operation, such as the radio operation on at least the one cell 134 belonging to the first carrier frequency 141 with a first serving cell 131 .
  • the communication device 101 may mitigate the effects of the interruption of the transmission of packets between the wireless device 120 and the second cell 132, or the third cell 133, caused by the performance of the at least one radio operation.
  • the first communication device 101 may perform the at least one radio operation while adapting the radio procedure in the wireless device 120 according to Action 605.
  • the method performed by the first communication device 101 is provided below in the section entitled “Method in a UE, such as the wireless device 120, of adapting serving cell interruption based on type of spectrum", and in the section entitled “Method in a network node, such as the network node 1 10, of adapting procedure to avoid interruption based on type of spectrum”.
  • Embodiments of a method performed by the second communication device 102 for sending one or more parameters to the first communication device 101 will now be described with reference to the flowchart depicted depicted in Figure 7. As stated earlier, the first communication device 101 and the second communication device 102 operate in the communications network 100.
  • the method may comprise one or more of the following actions. In some embodiments all the actions may be performed. In some embodiments, one or more actions may be performed. One or more embodiments may be combined, where applicable. All possible combinations are not described to simplify the description. Note that in some embodiments, the order of the Actions may be changed. For example, Action 703, may be performed before Action 701. In Figure 7, optional actions are indicated with dashed lines.
  • the first communication device 101 may receive the one or more parameters described above from the second communication device 102.
  • the second communication device 102 obtains, e.g., determines, calculates or receives, the one or more parameters, such as the one or more threshold parameters described above.
  • the one or more parameters are for the first communication device 101 to adapt the radio procedure for the wireless device 120 to perform the at least one radio operation on the at least one cell 134 operating on the first carrier frequency 141.
  • the wireless device 120 has the first cell 131 operating on the first carrier frequency 141. To adapt is based on the one or more conditions related to the interruption of the transmission of the packets between the wireless device 120 and the second cell 132.
  • the second cell 132 is a serving cell of the wireless device 120.
  • the second cell 132 operates on the second carrier frequency 142 in the wireless
  • obtaining may comprise determining autonomously, e.g., calculating or retrieving from a memory, or receiving the one or more parameters from another network node.
  • the first cell 131 may be a serving cell of the wireless device 120.
  • the second carrier frequency 142 may belong to an unlicensed frequency band.
  • the wireless device 120 may be configured with at least the third cell 133 operating in the wireless communications network 100.
  • the third cell 133 may be a serving cell of the wireless device 120 operating on the third carrier frequency 143 belonging to a licensed frequency band.
  • the one or more parameters may be, for the first communication device 101 to adapt the radio procedure to ensure that, during the performing of the at least one radio operation by the wireless device 120, the one or more conditions are met, e.g., in at least one of: the second serving cell 132 and the third serving cell 133.
  • the one or more conditions may comprise at least one of: a) the interruption probability of missed A/N related to the packets transmitted between the wireless device 120 and the second cell 132 does not exceed the first threshold in interruption probability; b) the interruption probability of missed A/N related to packets transmitted between the wireless device 120 and the third cell 133 does not exceed the second threshold in interruption probability; c) the length of interruption in time related to the packets transmitted between the wireless device 120 and the second cell 132 does not exceed the first threshold in length interruption; and d) the length of interruption in time related to packets transmitted between the wireless device 120 and the third cell 133 does not exceed the second threshold in length interruption.
  • the first communication device 101 may be a network node 1 10
  • the radio procedure may be a Listen Before Talk procedure
  • the one or more conditions may comprise minimizing the loss of packets transmitted between the wireless device 120 and the second cell 132 during the at least one radio operation.
  • the second communication device 102 sends the obtained one or more parameters to the first communication device 101 , e.g., via RRC signalling.
  • the obtained one or more parameters may be send by e.g., sending an indication of the obtained one or more parameters.
  • the first communication device 101 may then obtain the one or more parameters in Action 604.
  • Action 703
  • the second communication device 102 may be the network node 1 10, and the first communication device 101 may be the wireless device 120.
  • the second communication device 102 may, according to Action 601 described earlier, send the message to the first communication device 101 to perform the at least one radio operation on the at least one cell 134 operating on the first carrier frequency 141 with the first serving cell 131.
  • the sending may be performed via an RRC message.
  • the at least one radio operation may be configured, e.g., by the message sent in this Action 703, to be performed while operating in the first cell 131.
  • the at least one radio operation may comprises at least one of: a) performing one or more radio measurements on cells of the first carrier frequency 141 , b) configuration of the first cell 131 , c) deconfiguration of the first cell 131 , d) activation of the first cell 131 , and e) deactivation of the first cell 131.
  • particular embodiments herein may comprise of methods in a UE, such as the wireless device 120, and in a network node, such as the network node 1 10.
  • the basic scenario of embodiments herein may comprise a wireless device such as the wireless device 120, e.g. a UE, being served by a first network node such as the network node 1 10 with a PCell, e.g., the third cell 133, operating on the primary carrier frequency, e.g., the third carrier frequency 143, and the UE may also be capable of being served by at least one secondary serving cell (SCell) also known as a first SCell (SCelM) 131 .
  • SCell secondary serving cell
  • SCelM SCell
  • the UE may further be capable of being served by two SCells: the first cell 131 (SCelM) and the second SCell 132 (SCell2).
  • the SCelM may operate on the first carrier frequency 141 (SCC1) and the second SCell 132 may operate on the second carrier frequency 142 (SCC2).
  • SCC1 may belong to a licensed spectrum and in another example the SCC1 may belong to an unlicensed band.
  • the SCC2 may belong to a licensed spectrum or to an unlicensed band.
  • An alternative scenario comprises a UE that may be capable of being served by at least one carrier in unlicensed band, which may also be known as the first cell 131 in unlicensed carrier.
  • the UE may further be capable of being served by two such cells: the first unlicensed carrier and a second unlicensed carrier.
  • the first carrier may operate on the first carrier frequency 141 (f1) and the second carrier may operate on the second carrier frequency 142 (f2).
  • the carriers f1 and f2 may belong to an unlicensed spectrum or band.
  • An alternative scenario may be when the second serving cell 132 is a PSCell, in a
  • contention based transmission may be allowed, i.e., two or more devices, such as UEs or network nodes, may access even the same part of the spectrum. In this case, no operator owns the spectrum.
  • contention free transmission may be allowed, with the exception of random access, i.e., only devices, UE or network nodes, allowed by the owner of the spectrum license may access the unlicensed spectrum.
  • the UE may also be capable of being served by more than two SCells e.g. SCelM , SCell2, SCell3 and so on.
  • SCells e.g. SCelM , SCell2, SCell3 and so on.
  • the term 'served or being served' herein may be understood to mean that the UE may be configured with the corresponding serving cell and may receive from and/or transmit data to the network node 1 10 on the serving cell e.g., on PCell or any of the SCells.
  • the data may be transmitted or received via physical channels, e.g., the Physical channels
  • the transmission of signals or transmission opportunities and/or measurement opportunities between the UE and any serving cell(s), e.g., the PCell, may be interrupted during the time instances or bursts of periods when the UE may perform one or more of the following radio operations on the at least one cell 134 belonging to the SCC1 , e.g., the first carrier frequency 141 : a) One or more radio measurements on at least one cell on SCCs with deactivated SCell, e.g., one or more radio measurements on the at least one cell 134 operating on the first carrier frequency 141 with the deactivated first cell 131 ; and b) SCell setup or release operation of the e.g., the at least one cell 134 on at least the SCC1 , e.g., any of activation of SCell, deactivation of SCell, SCell addition, SCell release configuration of SCC, de-configuration of SCC etc.
  • the transmission of signals or transmission opportunities and/or measurement opportunities between the UE and the first SCell may be interrupted or lost during the time instances or bursts of periods when the UE may perform one or more of the above radio operations on cells of at least SCC2. For example, if the UE measures on cells of SCC2 with a deactivated SCell, i.e. the second SCell is deactivated, then the transmission of signals between the UE and the first SCell may be lost or interrupted.
  • Embodiments herein are mainly described considering the above scenario with 3 carriers, PCC, e.g, the third carrier frequency 143, SCC1 , e.g., the first carrier frequency 141 and SCC2, e.g, the second carrier frequency 142.
  • the embodiments may also be applicable to the scenario where the UE may be configured to measure on any number of SCC carriers e.g. SCC1 , SCC2,...,SCCn, out of which at least one SCC resides in unlicensed spectrum.
  • the embodiments may also be applicable to the scenario where the UE may be configured to measure on a combination of non-serving carriers, e.g., inter-frequency and/or inter-RAT carriers, and SCC carriers.
  • the interruption of signals between the UE and the serving cell may lead to loss or degradation of serving cell performance.
  • the interruptions may affect the PCell and/or one or more active SCells.
  • the loss in serving cell performance may be expressed in terms of one or more metrics, which may be absolute or relative, such as error rate or loss of packets or packet loss rate or number of packets lost or packet drop rate or a reduction in the detection probability or an increase of misdetection probability or even probability of missed or dropped or lost packets.
  • the performance measure used to measure and/or control the impact of interruption may generally be referred to herein as an interruption impact measure, which may be the actual measure or a target measure.
  • the packet herein may refer to any 'block of data', such as transport block sent over a radio interface in UL or DL.
  • the packet loss rate or number of lost packets may be typically estimated over a certain period of time, e.g., a measurement time of a radio measurement, a pre-defined time etc.
  • the number of lost packets may be expressed as a total number of missed
  • ACKnowledgement/Negative ACKnowledgement in response to continuous transmission of data to the UE from its serving cell over a certain time period.
  • the transmission opportunity or scheduling instance is 1 ms, i.e., 1 TTI. Therefore, for example, the number of packets lost in LTE may be 10 if the UE is unable to transmit 10 ACK/NACK in UL in response to continuous DL transmission over a period of 100 ms.
  • the corresponding packet loss rate is 10% or 0.1. This may also be stated as the probability with which the fraction of ACK/NACK transmitted in the uplink in response to continuous DL transmission over a period are missed or dropped or lost.
  • It may also be expressed as ratio of: a number of missed ACK/NACK in response to continuous transmission of data to the UE from its serving cell over certain time period (TO) to the the total number of ACK/NACK in response to continuous transmission of data to the UE from its serving cell if all data blocks are received.
  • TO time period
  • the serving cell performance e.g., PCell or SCell or PScell performance
  • the serving cell performance may also be expressed in terms of the probability of missed ACK/NACK.
  • the serving cell interruptions in terms of the probability of missed ACK/NACK.
  • the term 'serving cell interruption probability of missed ACK/NACK' is used herein.
  • For interruption on the PCell it may be termed as 'PCell interruption probability of missed ACK/NACK'.
  • 'SCell interruption probability of missed ACK/NACK' For interruption on any SCell, it may be termed as 'SCell interruption probability of missed ACK/NACK'.
  • the UE may receive one or more messages for setting up or releasing one or more SCells from the network node 1 10, according to Action 601. Also for example, in such embodiments the UE may receive one or more messages for setting up or releasing one or more SCells from the PCell, for performing measurements on one or more cells on the SCC1 etc.
  • Examples of embodiments herein may apply to LAA SCells operating with only DL transmissions.
  • This means UL may only be in licensed spectrum, i.e., PCell in licensed, and SCells may be with DL only in unlicensed spectrum.
  • the UE capable of CA may be configured by the network node 1 10 to perform the one or more radio operations on one or more cells operating, such as the at least one cell 134, on the first carrier frequency 141 (SCC1), with the first serving cell (SCelM) 131.
  • the SCelM may or may not be in deactivated state.
  • the radio operation considered here may comprise measurements on the SCC1 , activating SCelM , etc.
  • the radio operation may comprise activating the SCelM etc...
  • the SCC1 may belong to the licensed frequency band or to the unlicensed frequency band.
  • radio operations may be measurements, e.g. automatic gain control, automatic frequency control, cell identification, RSRP, RSRQ, etc, activation of the SCelM etc.
  • the UE may be configured by the network node 1 10 using any of layer 3 signaling, e.g., RRC, layer 2 signaling, e.g., MAC message, layer 1 signaling, e.g., DL L1 control channel such as the Physical Downlink Control Channel (PDCCH), ePDCCH etc.
  • layer 3 signaling e.g., RRC
  • layer 2 signaling e.g., MAC message
  • layer 1 signaling e.g., DL L1 control channel such as the Physical Downlink Control Channel (PDCCH), ePDCCH etc.
  • PDCH Physical Downlink Control Channel
  • the UE may determine whether the UE is also configured with two or more serving cells. For example, the UE may determine, according to Action 602, that it is configured with at least the second serving cell 132 operating on the second carrier frequency 142 (SCC2), which may belong to an unlicensed band, and, according to Action 603, may also determine that is configured with at least the third serving cell 133 operating on the third carrier frequency 143 (SCC3), which may belong to a licensed band.
  • the second serving cell 132 may be a primary serving cell (PCell) or a secondary serving cell (SCell2).
  • the third serving cell 133 may also be a PCell or a third serving cell (SCell3).
  • the second serving cell 132 is the SCell2 and the third serving cell 133 is the PCell.
  • the UE may further determine that the SCell2 is activated.
  • the PCell is always activated.
  • the UE may further retrieve the first threshold such as a first interruption probability threshold and the second threshold such as a second interruption probability threshold from its memory, according to Action 604.
  • the UE may then initiate to perform , according to Action 606, the at least one radio operation, e.g., measurement, on the at least one cell 134 of the SCC1 -the first carrier frequency 141 , while adapting one or more radio procedures, according to Action 605, with the aim of achieving certain serving cell performance targets associated with the unlicensed band and licensed band of the second serving cell 132 and the third serving cell 133 respectively.
  • serving cell performance target may be a maximum allowed interruption probability of missed ACK/NACK' related to the packets transmitted between the UE and the serving cell, e.g., SCell2, PCell etc, during a time when the UE performs the at least one radio operation.
  • Another example of the serving cell performance may be the length of each interruption in time e.g., 1 subframe, 5 subframes etc.
  • the performance targets may be realized in the UE by adapting the radio procedure.
  • the aim of such adaptation may be for the UE to achieve the following serving performances on at least the second serving cell 132 and the third serving cell 133 while performing the radio operation(s) on the at least one cell 134 on the first carrier frequency 141 , SCC1 :
  • the interruption probability of missed ACK/NACK related to packets transmitted between the UE and the second serving cell 132, e.g., SCell2 may not exceed the first threshold, such as a first interruption probability threshold (P1); and
  • the interruption probability of missed ACK/NACK related to packets transmitted between the UE and the third serving cell 133, e.g., PCell may not exceed the first threshold, such as a second interruption probability threshold (P2).
  • P2 interruption probability threshold
  • the aim of such adaptation may be for the UE to achieve the following serving performances on at least the second serving cell 132 and the third serving cell 133, while performing the radio operation(s) on the at least one cell 134 on the SCC1 :
  • the length of interruption in time related to packets transmitted between the UE and the second serving cell 132, e.g., SCell2 may not exceed a third threshold, such as a first interruption length threshold (T1); and
  • the interruption probability of missed ACK/NACK related to packets transmitted between the UE and the third serving cell 133, e.g., PCell may not exceed a fourth threshold, such as a second interruption length threshold (T2).
  • a fourth threshold such as a second interruption length threshold (T2).
  • P1 and P2 may 0.1 % and 0.5%, respectively.
  • T1 and T2 may be 1 ms and 5 ms, respectively.
  • P1 and P2 may be 0% and 0.5%, respectively.
  • P1 and P2 may be 0.5% and 0%, respectively.
  • the UE implementation may need to ensure that the impact of interruption on the second serving cell 132, i.e., on unlicensed band, is avoided or minimized. This may require the UE to implement carriers of unlicensed band and carriers of licensed band on separate chips, which are also sufficiently isolated in order to avoid or minimize spurious emissions of radio signals on each. The lower emission level may lead to less interruption on the SCell2 or the PCell.
  • the UE implementation may need to ensure that the impact of interruption on the third serving cell 133, i.e., on unlicensed band, is avoided or minimized. This may require the UE to implement carriers of unlicensed band and carriers of licensed band also on separate chips, which are also sufficiently isolated in order to avoid or minimize spurious emissions of radio signals on each other.
  • the values of threshold parameters P1 , P2, T1 and T2 may depend on the SCelM measurement cycle, that is, the measurement cycle of the first cell 15 131 , which may be configured at the UE for measurements on cells of the first carrier frequency 141 , SCC1 , with deactivated SCelM .
  • SCelM measurement cycle is below a threshold, e.g., 640 ms, then the UE may not be required to cause any interruption on any other serving cell, i.e., P1 , P2, T1 and T2 may be zero.
  • the thresholds parameters P1 , P2, T1 and T2 may be pre-defined.
  • one or more parameters may also be configured at the UE by the network node 1 10, e.g., signaled by the PCell using RRC signaling, as described in Action 604.
  • Method in a network node such as the network node 110, of adapting procedure to avoid interruption based on type of spectrum
  • the network node performing the described method may be understood to equally refer to the network node 1 10, and the UE may be understood to refer to the wireless device 120.
  • the network node serving the UE configured with at least the SCC1 , SCC2 and PCC may, according to the Action 505, adapt the LBT procedure for the SCelM to avoid or minimize
  • the network node 1 10 may apply, whenever necessary, an LBT procedure on the second serving cell 1 10 during the time when the UE
  • the UE may not be scheduled on the second serving cell 132, and therefore, no interruption is caused or the number of interruptions is minimized.
  • the adaptation of the LBT procedure may be performed by the network node 1 10 based on the one or more conditions, that is, one or more criteria e.g., target quality of service, such as a BLock Error Rate (BLER) target, used on the PCell and/or on the activated SCell of the UE, a type of service, e.g., packet date, high quality video streaming etc.
  • target quality of service such as a BLock Error Rate (BLER) target
  • BLER BLock Error Rate
  • the network node 1 10 may avoid interruption at the UE by applying LBT during the time when the UE may also be scheduled data on the PCell and/or the activated SCell.
  • One advantage of embodiments herein is be that the methods described may enable the UE to limit or avoid interruption or loss of packets transmitted between the UE and the serving cells when at least one is on unlicensed spectrum and another one on licensed spectrum.
  • Another advantage of embodiments herein is that the UE behavior related to interruption probabilities and interruption lengths in time for serving cells on both licensed and unlicensed CCs are well specified.
  • a further advantage of embodiments herein is that the methods described herein, may enable the network node 1 10 to be aware of UE performance, e.g., interruption probabilities and interruption lengths, when the UE may perform activation or deactivation of the SCell in unlicensed or licensed bands.
  • the methods described herein may enable the network node 1 10 to be aware of UE performance, e.g., interruption probabilities and interruption lengths, when the UE may perform radio measurements on the cells of the SCC with a deactivated SCell on unlicensed or licensed bands.
  • particular examples herein may be related to a UE adapting a radio procedure while performing a radio operation, e.g. measurements, on cells of a carrier frequency with a deactivated SCell to ensure that the interruption probability of packets transmitted between the UE and the serving cell on a licensed band and the interruption probability of packets transmitted between the UE and the serving cell on an unlicensed band do not exceed their respective threshold.
  • a radio operation e.g. measurements
  • the UE operating in CA may: a) receive the message from a network node to perform at least one operation on at least one cell operating on a first carrier frequency with a first serving cell, b) determine that the UE is configured with at least a second serving cell operating on a second carrier frequency belonging to an unlicensed frequency band, determines that the UE is configured with at least a third serving cell operating on a third carrier frequency belonging to a licensed frequency band, and performs at least one operation on at least one cell belonging to the first carrier frequency by adapting a radio procedure to ensure that during the performing radio operation: i) an interruption probability of missed A/N related to packets transmitted between the UE and the second serving cell does not exceed a first interruption threshold; and ii) an interruption probability of missed A/N related to packets transmitted between the UE and the third serving cell does not exceed a second interruption threshold.
  • a network node serving a UE operating in CA may adapt LBT procedure on a second serving cell operating on a carrier of unlicensed band during the time when the UE performs one or more radio operations on cells of a first carrier.
  • the aim of such adaptation is to avoid or minimize any loss of packets transmitted between the UE and the second serving cell during the radio operation(s).
  • the LBT adaptation may be performed by the network node based on one or more criteria e.g., a target quality of service, such as Block Error Rate (BLER) target, used on the PCell and/or on the activated SCell of the UE, type of service, e.g. packet date, high quality video streaming etc.
  • BLER Block Error Rate
  • the first communication device 101 is configured to adapt the radio procedure in the wireless device 120.
  • the first communication device 101 may comprise the following arrangement depicted in Figure 8. As stated earlier, the first communication device 101 and the wireless device 120 are configured to operate in the wireless communications network 100.
  • the first cell 131 may be configured to be the first serving cell of the wireless device 120.
  • the first communication device 101 is further configured to, e.g., by means of an adapting module 801 configured to, adapt the radio procedure in the wireless device 120 arranged to operate on the first cell 131 on the first carrier frequency 141 in the wireless communications network 100.
  • the radio procedure is configured to be for the wireless device 120 to perform the at least one radio operation on the at least one cell 134 configured to operate on the first carrier frequency 141.
  • To adapt is configured to be based on the one or more conditions related to the interruption of transmission of packets between the wireless device 120 and the second cell 132.
  • the second cell 132 is configured to be a serving cell of the wireless device 120 configured to operate on a second carrier frequency 142 in the wireless communications network 100, wherein one of: a) the first carrier frequency 141 is configured to belong to a licensed band, and the second carrier frequency 142 is configured to belong to an unlicensed frequency band, and b) the first carrier frequency 141 is configured to belong to an unlicensed band, and the second carrier frequency 142 is configured to belong to a licensed frequency band.
  • the interruption of the transmission of packets is configured to be caused by the performing of the at least one radio operation.
  • the adapting module 801 may be a processor 807 of the first communication device 101 , or an application running on such processor.
  • the adapting module 802 may be within the first communication device 101.
  • the first communication device 101 may be further configured to, e.g., by means of a determining module 802 configured to, determine that the wireless device 120 is configured with at least the third cell 133 configured to operate in the wireless communications network 100.
  • the third cell 133 may be configured to be the serving cell of the wireless device 120 operating on the third carrier frequency 143 belonging to a licensed frequency band.
  • the one or more conditions may be further related to the interruption of transmission of packets between the wireless device 120 and the third cell 133.
  • the determining module 801 may be the processor 807 of the first communication device 101 , or an application running on such processor.
  • the determining module 803 may be within the first communication device 5 101.
  • the one or more conditions may comprise at least one of: a) the interruption probability of missed A/N, related to the packets configured to be transmitted between the wireless device 120 and the second cell 132 does not exceed the first threshold in interruption probability; b) the interruption probability of missed A/N0 related to packets configured to be transmitted between the wireless device 120 and the third cell 133 does not exceed the second threshold in interruption probability; c) the length of interruption in time related to packets configured to be transmitted between the wireless device 120 and the second cell 132 does not exceed the first threshold in length interruption; and d) the length of interruption in time related to packets configured to be5 transmitted between the wireless device 120 and the third cell 133 does not exceed the second threshold in length interruption.
  • the first communication device 101 may be further configured to, e.g., by means of the determining module 802 configured to, determine that the wireless device 120 is configured with the second cell 132.
  • the first communication device 101 may be the wireless device 120
  • the first communication device 101 may be further configured to, e.g., by means of a receiving module 803 configured to, receive the message from the second communication device 102 to perform the at least one radio operation on the at5 least one cell 134 configured to operate on the first carrier frequency 141 , the second communication device 102 being configured to operate in the wireless communications network 100.
  • the receiving module 803 may be the processor 807 of the first communication device 101 , or an application running on such processor.
  • the receiving module 803 may be within the first communication device 101.
  • the first communication device 101 may be the wireless device 120
  • the first communication device 101 may be further configured to, e.g., by means of a performing module 804 configured to, perform the at least one radio operation based on the adapted radio procedure.
  • the performing module 804 may be the processor 807 of the first communication device 101 , or an application running on such processor.
  • the performing module 804 may be within the first communication device 101.
  • the first communication device 101 may be further configured to, e.g., by means of an obtaining module 805 configured to, obtain one or more parameters to adapt the radio procedure from one of: the first communication device 101 and the second communication device 102.
  • the obtaining module 805 may be the processor 807 of the first communication device 101 , or an application running on such processor.
  • the obtaining module 805 may be within the first communication device 101.
  • the radio procedure may be an LBT procedure
  • the one or more conditions may comprise minimizing a loss of packets configured to be transmitted between the wireless device 120 and the second cell 132 during the at least one radio operation.
  • the at least one radio operation may be configured to be performed while operating in the first cell 131 , and the at least one radio operation may comprise at least one of: a) performing the one or more radio measurements on cells of the first carrier frequency 141 , b) configuration of the first cell 131 , c) deconfiguration of the first cell 131 , d) activation of the first cell 131 , and d) deactivation of the first cell 131.
  • Other modules 807 may be comprised in the first communication device 101.
  • the embodiments herein may be implemented through one or more processors, such as a processor 807 in the first communication device 101 depicted in Figure 8, together with computer program code for performing the functions and actions of the embodiments herein.
  • the program code mentioned above may also be provided as a computer program product, for instance in the form of a data carrier carrying computer program code for performing the embodiments herein when being loaded into the in the first communication device 101 .
  • One such carrier may be in the form of a CD ROM disc. It is however feasible with other data carriers such as a memory stick.
  • the computer program code may furthermore be provided as pure program code on a server and downloaded to the first communication device 101.
  • the first communication device 101 may further comprise a memory 808
  • the memory 808 is arranged to be used to store obtained information, store data, configurations, schedulings, and applications etc. to perform the methods herein when being executed in the first communication device 101 .
  • the first communication device 101 may comprise an interface unit to facilitate communications between the first communication device 101 and other nodes or devices, e.g. , the second communication device 102.
  • the interface may, for example, include a transceiver configured to transmit and receive radio signals over an air interface in accordance with a suitable standard.
  • the first communication device 101 may receive information from the second communication device 102, through a receiving port 809.
  • the receiving port 809 may be, for example, connected to one or more antennas in first communication device 101 .
  • the first communication device 101 may receive information from the second communication device 102, through a receiving port 809.
  • the receiving port 809 may be, for example, connected to one or more antennas in first communication device 101 .
  • the first communication device 101 may receive information from the second communication device 102, through a receiving port 809.
  • the receiving port 809 may be, for example, connected to one or more antennas in first communication device 101 .
  • the communication device 101 may receive information from another structure in the wireless communications network 100 through the receiving port 809. Since the receiving port 809 may be in communication with the processor 807, the receiving port 809 may then send the received information to the processor 807.
  • the receiving port 809 may also be configured to receive other information.
  • the processor 807 in the first communication device 101 may be further configured to transmit or send information to e.g. , the second communication device 102, through a sending port 810, which may be in communication with the processor 807, and the memory 808.
  • the adapting module 801 , the determining module 802, the receiving module 803, the performing module 804, the obtaining module 805 and the other modules 806 described above may refer to a combination of analog and digital modules, and/or one or more processors configured with software and/or firmware, e.g. , stored in memory, that, when executed by the one or more processors such as the processor 807, perform as described above.
  • processors as well as the other digital hardware, may be included in a single Application-Specific Integrated Circuit (ASIC) , or several processors and various digital hardware may be distributed among several separate components, whether individually packaged or assembled into a System-on-a-Chip (SoC).
  • ASIC Application-Specific Integrated Circuit
  • the different modules 801-806 described above may be implemented as one or more applications running on one or more processors such as 5 the processor 807.
  • the methods according to the embodiments described herein for the first communication device 101 may be respectively implemented by means of a computer program 81 1 product, comprising instructions, i.e., software code portions, which, when
  • the computer program 81 1 product may be stored on a computer-readable storage medium 812.
  • the computer-readable storage medium 812, having stored thereon the computer program 81 1 may comprise instructions which, when executed on at least one processor
  • the computer- readable storage medium 812 may be a non-transitory computer-readable storage medium, such as a CD ROM disc, or a memory stick.
  • the computer program 81 1 product may be stored on a carrier containing the computer
  • the carrier is one of an electronic signal, optical signal, radio signal, or the computer-readable storage medium 812, as described above.
  • the second 25 communication device 102 is configured to send one or more parameters to a first
  • the second communication device 102 may comprise the following arrangement depicted in Figure 9. As stated earlier, the first communication device 101 and the second communication device 102 are configured to operate in the wireless communications network 100.
  • the first cell 131 may be configured to be a serving cell of the wireless device 120.
  • the second communication device 102 is further configured to, e.g., by means of an obtaining module 901 configured to, obtain the one or more parameters, the one or more parameters being for the first communication device 101 to adapt the radio procedure configured to be for the wireless device 120 to perform the at least one radio operation on the at least one cell 134 configured to operate on the first carrier frequency 141.
  • the wireless device 120 has the first cell 131 arranged to operate on the first carrier frequency 141. To adapt is based on the one or more conditions related to the interruption of transmission of packets between the wireless device 120 and the second cell 132.
  • the second cell 132 is configured to be a serving cell of the wireless device 120.
  • the second cell 132 being is configured to operate on the second carrier frequency 142 in the wireless communications network 100, wherein at one of: a) the first carrier frequency 141 is configured to belong to a licensed band, and the second carrier frequency 142 is configured to belong to an unlicensed frequency band, and b) the first carrier frequency 141 is configured to belong to an unlicensed band, and the second carrier frequency 142 is configured to belong to a licensed frequency band.
  • the interruption of the transmission of packets is configured to be caused by the performing of the at least one radio operation.
  • the obtaining module 901 may be a processor 904 of the second
  • the obtaining module 901 may be within the second communication device 102
  • the second communication device 102 is further configured to, e.g., by means of a sending module 902 configured to, send the obtained one or more parameters to the first communication device 101.
  • the sending module 902 may be the processor 904 of the second communication device 102, or an application running on such processor, within the second communication device 102.
  • the second communication device 102 may be the network node 1 10
  • the first communication device 101 may be the wireless device 120
  • the second communication device 102 may be further configured to, e.g., by means of the sending module 902 configured to, send the message to the first communication device 101 to perform the at least one radio operation on the at least one cell 134 configured to operate on the first carrier frequency 141 with the first serving cell 131 .
  • the second carrier frequency 142 may be configured to belong to an unlicensed frequency band.
  • the wireless device 120 may be configured with at least the third cell 133 configured to operate in the wireless communications network 100.
  • the third cell 133 may be configured to be a serving cell of the wireless device 120 operating on the third carrier frequency 143 belonging to a licensed frequency band.
  • the one or more conditions may comprise at least one of: a) the interruption probability of missed A/N related to the packets configured to be transmitted between the wireless device 120 and the second cell 132 does not exceed the first threshold in interruption probability; b) the interruption probability of missed A/N related to packets configured to be transmitted between the wireless device 120 and the third cell 133 does not exceed the second threshold in interruption probability; c) the length of interruption in time related to packets configured to be transmitted between the wireless device 120 and the second cell 132 does not exceed the first threshold in length interruption; and d) the length of interruption in time related to packets configured to be transmitted between the wireless device 120 and the third cell 133 does not exceed the second threshold in length interruption.
  • the first communication device 101 may be the network node 1 10
  • the radio procedure may be a Listen Before Talk procedure
  • the one or more conditions may comprise minimizing a loss of packets configured to be transmitted between the wireless device 120 and the second cell 132 during the at least one radio operation.
  • the at least one radio operation may be configured to be performed while operating in the first cell 131 , and the at least one radio operation may comprise at least one of: a) performing the one or more radio measurements on cells of the first carrier frequency 141 , b) the configuration of the first cell 131 , c) the
  • modules 903 may be comprised in the second communication device 102.
  • the embodiments herein may be implemented through one or more processors, such as a processor 904 in the second communication device 102 depicted in Figure 1 1 , together with computer program code for performing the functions and actions of the embodiments herein.
  • the program code mentioned above may also be provided as a computer program product, for instance in the form of a data carrier carrying computer program code for performing the embodiments herein when being loaded into the in the second communication device 102.
  • One such carrier may be in the form of a CD ROM disc. It is however feasible with other data carriers such as a memory stick.
  • the computer program code may furthermore be provided as pure program code on a server and downloaded to the second communication device 102.
  • the second communication device 102 may further comprise a memory 905 comprising one or more memory units.
  • the memory 905 is arranged to be used to store obtained information, store data, configurations, schedulings, and applications etc. to perform the methods herein when being executed in the second communication device 10 102.
  • the second communication device 102 may comprise an interface unit to facilitate communications between the second communication device 102 and other nodes or devices, e.g. , the first communication device 101 .
  • the interface may, for example, include a transceiver configured to transmit and receive radio signals over an air interface in 15 accordance with a suitable standard.
  • the second communication device 102 may receive information from the first communication device 101 , through a receiving port 906.
  • the receiving port 906 may be, for example, connected to one or
  • the second communication device 102 may receive information from another structure in the wireless communications network 100 through the receiving port 906. Since the receiving port 906 may be in communication with the processor 904, the receiving port 906 may then send the received information to the processor 904.
  • the receiving port 906 may also be
  • the processor 904 in the second communication device 102 may be further configured to transmit or send information to e.g., the second communication device 102, through a sending port 907, which may be in communication with the processor 904, and 30 the memory 905.
  • the second communication device 102 may comprise an interface unit to facilitate communications between the second communication device 102 and other nodes or devices, e.g. , the second communication device 102.
  • the interface may, for example, include a transceiver configured to transmit and receive radio signals over an air interface 35 in accordance with a suitable standard.
  • the obtaining module 901 , the sending module 902 and the other modules 903 described above may refer to a combination of analog and digital modules, and/or one or more processors configured with software and/or firmware, e.g., stored in memory, that, when executed by the one or more processors such as the processor 904, perform as described above.
  • processors may be included in a single Application-Specific Integrated Circuit (ASIC), or several processors and various digital hardware may be distributed among several separate components, whether individually packaged or assembled into a System-on-a-Chip (SoC).
  • ASIC Application-Specific Integrated Circuit
  • SoC System-on-a-Chip
  • the different modules 901-903 described above may be implemented as one or more applications running on one or more processors such as the processor 904.
  • the methods according to the embodiments described herein for the second communication device 102 may be respectively implemented by means of a computer program 908 product, comprising instructions, i.e., software code portions, which, when executed on at least one processor 904, cause the at least one processor 904 to carry out the action described herein, as performed by the second communication device 102.
  • the computer program 908 product may be stored on a computer-readable storage medium 909.
  • the computer-readable storage medium 909 having stored thereon the computer program 908, may comprise instructions which, when executed on at least one processor 904, cause the at least one processor 904 to carry out the action described herein, as performed by the second communication device 102.
  • the computer-readable storage medium 909 may be a non-transitory computer-readable storage medium 909, such as a CD ROM disc, or a memory stick.
  • the computer program 908 product may be stored on a carrier containing the computer program 908 just described, wherein the carrier is one of an electronic signal, optical signal, radio signal, or the computer-readable storage medium 909, as described above.
  • the embodiments herein may be applicable to any RAT or multi-RAT systems, which may involve measurement without gaps and/or multi-carrier operation, e.g., LTE Frequency Division Duplex (FDD)/Time Division Duplex (TDD), Wideband Code Division Multiple Access (WCDMA)/HSPA, Global System for Mobile communications (GSM)/ GSM/Enhanced Data Rate for GSM Evolution (EDGE) Radio Access Network (GERAN), Wi Fi, CDMA2000 etc.
  • the embodiments may also be applicable to procedures or radio operations performed by a UE in any RRC state, e.g., RRC connected state, CELL_DCH state, idle state, idle mode, CELL_PCH, URA_PCH, CELL_FACH etc.
  • Embodiments herein may relate to LTE, LAA, CA, PCell interruption, activated SCell interruption, and LBT.

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Abstract

L'invention concerne un procédé réalisé par un premier dispositif de communication (101) pour adapter une procédure dans un dispositif sans fil (120). Le premier dispositif de communication (101) adapte (605) la procédure dans le dispositif sans fil (120) fonctionnant sur une première cellule (131) sur une première fréquence porteuse (141). La procédure doit réaliser une opération radio sur au moins une cellule (134) fonctionnant sur la première porteuse. L'adaptation (605) est basée sur une ou plusieurs conditions associées à une interruption de la transmission de paquets entre le dispositif sans fil (120) et une seconde cellule (132). La seconde cellule (132) est une cellule de desserte fonctionnant sur une seconde fréquence porteuse (142), a) la première porteuse appartenant à une bande autorisée, et la seconde à une bande non autorisée, ou b) la première porteuse appartenant à une bande non autorisée, et la seconde à une bande autorisée. L'interruption est provoquée par réalisation de l'opération radio.
PCT/SE2016/050711 2015-08-17 2016-07-11 Premier dispositif de communication, second dispositif de communication et procédés associés, pour adapter une procédure radio WO2017030481A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN111052802A (zh) * 2017-09-27 2020-04-21 华为技术有限公司 一种非授权频谱上的载波切换方法、基站及终端设备
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CN111052802B (zh) * 2017-09-27 2021-02-12 华为技术有限公司 一种非授权频谱上的载波切换方法、基站及终端设备

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