communication systems

Abstract

To provide efficient scheduling.SOLUTION: A mobile device of a communication system receives and / or transmits a signal, monitors a control signal in a set of first resources, receives or transmits a signal in a set of second resources in a case where the monitored control signal includes identification information of the mobile device and an indicator having a first value, and monitors the control signal in the set of the first resources without receiving or transmitting any signal in the set of the second resources after a period which is indicated in the monitored control signal. A network node of the communication system receives and / or transmits the signal, transmits the control signal to the mobile device in the set of the first resources, and receives or transmits the signal in the set of the second resources.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] TECHNICAL FIELD This disclosure relates to the transmission and reception of signals in communication systems, and in particular to communication systems and methods for such transmission and reception. [Background technology]

[0002] The 3rd Generation Partnership Project (3GPP) is currently working on the next release (Release 15) of technical specifications for next-generation cellular technology, also known as 5G, which includes "New Radio" (NR) radio access technology (RAT) operating in the frequency range up to 100 GHz. NR is the successor to current technologies, represented by Long Term Evolution (LTE) and LTE Advanced (LTE-A). NR is designed to promote a single technical framework that addresses all defined usage scenarios, requirements, and deployment scenarios, including enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC). For example, deployment scenarios for eMBB could include indoor hotspots, dense urban areas, suburban areas, urban areas, and high-speed areas. URLLC deployment scenarios may include industrial control systems, mobile healthcare (remote monitoring, diagnosis, and treatment), real-time control of vehicles, and wide-area monitoring and control systems for smart grids. mMTC may include scenarios using a large number of devices with low-latency data transmission, such as smart wearables and sensor networks. eMBB and URLLC services are similar in that both require very high bandwidth, but differ in that URLLC services require ultra-low latency. The physical layer is based on time-frequency resources (such as orthogonal frequency division multiplexing (OFDM) in LTE) and may support multi-antenna operation.

[0003] In systems such as LTE and NR, further improvements and options may facilitate efficient operation of the communication system and certain devices associated with the system. Summary of the Invention

[0004] One non-limiting exemplary embodiment facilitates providing efficient scheduling, particularly in terms of power consumption and service delay at the terminal.

[0005] In one general aspect, the technology disclosed herein features a mobile device including: a transceiver that, during operation, receives and / or transmits signals; and circuitry that controls the transceiver, during operation, to: (i) monitor signals on a first set of resources; and (ii) if the monitored signals include an identification of the mobile device and an indicator having a first value, receive or transmit signals on a second set of resources, and, after a time period indicated in the monitored control signals, not receive or transmit signals on the second set of resources and monitor control signals on the first set of resources.

[0006] It should be noted that the general or specific embodiments may be realized as a system, a method, an integrated circuit, a computer program, a storage medium, or any combination thereof.

[0007] Further benefits and advantages of the disclosed embodiments will become apparent from the specification and drawings. These benefits and / or advantages may be obtained individually by various embodiments and features of the specification and drawings. However, not all of these features need to be present to obtain one or more of such benefits and / or advantages. [Brief explanation of the drawings]

[0008] In the following, exemplary embodiments are explained in more detail with reference to the accompanying drawings. [Figure 1] FIG. 1 illustrates an example architecture for a 3GPP NR system, including example user and control plane architectures for LTE eNBs, gNBs, and UEs. [Figure 2] FIG. 1 is a block diagram showing an exemplary configuration of a terminal and a base station. [Figure 3] FIG. 2 is a block diagram illustrating the configuration of a circuit for transmitting and receiving power save signals and related behavior. [Figure 4] 1 is a schematic diagram illustrating an example of a power save signal and its impact on scheduling physical control channels. [Figure 5] 10 is a schematic diagram illustrating another example of a power save signal and its impact on scheduling physical control channels. [Figure 6] 1 is a schematic diagram illustrating an example of a power save signal and its effect on scheduling physical data channels. [Figure 7] 10 is a schematic diagram illustrating another example of a power save signal and its effect on scheduling physical data channels. [Figure 8] 1 is a flow diagram illustrating an example method for transmitting and receiving power save signals and possible associated behaviors. DETAILED DESCRIPTION OF THE INVENTION

[0009] FIG. 1 illustrates an exemplary example of a communication system including a base station, a terminal, and a core network. Such a communication system may be a 3GPP system, such as NR and / or LTE and / or UMTS. For example, as illustrated in FIG. 1, a base station (BS) may be a gNB (e.g., an NR gNB) or an eNB (e.g., an LTE). However, the present disclosure is not limited to these 3GPP systems or any other systems. Although embodiments and exemplary implementations are described using some terminology of a 3GPP system, the present disclosure is also applicable to any other communication system, in particular any cellular, wireless, and / or mobile system.

[0010] In LTE and NR, a terminal is referred to as user equipment (UE). This may be a mobile device, such as a wireless telephone, a smartphone, or a USB stick, that has user equipment functionality. However, the term mobile device is not limited thereto, and in general, a repeater may have the functionality of such a mobile device and may operate as a repeater.

[0011] A base station is a network node forming part of a network for providing services to terminals, for example, a base station is a network node that provides wireless access to terminals.

[0012] In LTE and NR, the Radio Resource Control (RRC) protocol is used between the base station (eNB, gNB) and the terminal (UE) for configuration. RRC is a control protocol that exists above the physical and MAC layers. RRC defines various states for the UE depending on its transmission / reception behavior. For example, the RRC_CONNECTED state means, among other things, that the UE has an established radio access bearer and can transmit and / or receive data. On the other hand, the RRC_IDLE mode means, among other things, that the UE does not have a configured radio access bearer but may have an established signaling radio bearer.

[0013] The present disclosure provides techniques that can facilitate efficient power saving for mobile terminals, particularly power saving associated with communications between mobile terminals and base stations.

[0014] In LTE, power efficiency is increased by applying discontinuous reception (DRX). DRX is a technique to shorten the active period in RRC_CONNECTED mode without a scheduling grant. In particular, a timer that can be configured by the eNB allows the UE to operate in an active mode where it monitors the PDCCH and in a DRX mode where reception is switched off.

[0015] However, the DRX mechanism provides an on-period (in which the PDCCH is monitored) and an off-mode (in which the PDCCH is not monitored). The start time and duration of the on-period (and therefore the start time and duration of the off-period) are configured by the RRC, which means that they are not dynamic but at most semi-static. Dynamic change refers to change by scheduling frequency, e.g., scheduling grant. Semi-static can also refer to change during a communication connection, e.g., by the RRC, but the RRC configuration is less frequent than the scheduling grant. In DRX, the PDCCH cannot be monitored during the off-period, which may increase service delay, which may not be very effective for some specific delay-sensitive services. In other words, in off-mode, the UE does not monitor the PDCCH, so if traffic arrives, the UE cannot be scheduled until the next on-period. As a result, low latency requirements may not be guaranteed for some services. If the DRX on-period period is configured with a short value, power consumption increases due to increased PDCCH monitoring. Even if there is no traffic, the UE still needs to be turned on to monitor the PDCCH, which results in power waste. In short, DRX does not provide a good trade-off between power saving and service delay. Conversely, DRX may result in long latency when traffic arrives and unnecessary power waste when no traffic arrives.

[0016] Some example embodiments of the present disclosure can facilitate providing more dynamic, efficient, and / or UE-specific power adaptation that can be aligned with traffic characteristics such as traffic arrival timing and patterns.

[0017] For example, the UE may monitor limited resources (indicated by higher layer signaling) for control information (e.g., PoSS) related to power saving in the first mode, and the UE transitions to the second mode when it detects the control information in the first mode, and the UE remains in the first mode when it does not detect the control information in the first mode. The control information includes information about the length of the second mode, and the UE returns from the second mode to the first mode based on the length of the second mode.

[0018] An example of such a mobile device 210 is shown in Fig. 2. Fig. 2 shows a general and simplified exemplary block diagram of a user equipment 210 (also referred to as a communication device) and a scheduling device 250, which is exemplarily assumed here to be located in a base station (e.g., an eLTE eNB (alternatively referred to as an ng-eNB) or a gNB in 5G NR). In general, however, the scheduling device may also be a terminal in the case of a sidelink connection between two terminals. The UE and eNB / gNB communicate with each other over a (radio) physical channel 290 using respective transceivers 220 (UE side) and 260 (base station side). The base station 250 and terminal 210 together form a communication system 200.

[0019] The communication device 210 may include a transceiver 220 and a (processing) circuit 230. The transceiver 220 may include and / or function as a receiver and / or transmitter. The circuit may be one or more hardware components, such as one or more processors or any LSI. Between the transceiver and the processing circuit, there are input / output points (or input / output nodes) 225, 265, through which the processing circuit can control the transceiver, i.e., control the receiver and / or transmitter and exchange receive / transmit data. The transceiver may include an RF (radio frequency) front end, including one or more antennas, amplifiers, RF modulators / demodulators, etc., as a transmitter and receiver. The processing circuit may perform control tasks, such as controlling the transceiver to transmit user data and control data provided by the processing circuit and / or to receive user data and control data that is further processed by the processing circuit. The processing circuitry may also be responsible for performing other processes such as judging, determining, calculating, measuring, etc. The transmitter may be responsible for performing the transmitting process and other processes related to the transmitting process. The receiver may be responsible for performing the receiving process and other processes related to the receiving process.

[0020] According to one embodiment, the terminal corresponds to the communications device 210 and comprises a transceiver 220 for receiving and / or transmitting signals during operation and a circuit 230. The circuit 230 controls the transceiver to, during operation, monitor a signal on a first set of resources, and if the monitored signal includes an identification of the mobile device and an indicator having a first value, receive or transmit a signal on a second set of resources, and after a period of time indicated in the monitored control signal, not receive or transmit a signal on the second set of resources and monitor a control signal on the first set of resources.

[0021] According to one embodiment, the network node corresponds to a communications device 250 and comprises a transceiver 260 that, during operation, receives and / or transmits signals; and circuitry 270 that controls the transceiver to, during operation, transmit a signal on a first set of resources, and if the transmitted signal includes an identification of the mobile device and an indicator having a first value, receive or transmit a signal on a second set of resources, and, after a period of time indicated in the transmitted control signal, not receive or transmit a signal on the second set of resources and transmit the control signal on the first set of resources.

[0022] 3 further illustrates a more detailed configuration of a mobile device and a network node, such as a base station, according to an exemplary embodiment. Circuit 301 may be used in a terminal. Circuit 301 includes circuit 310 for PoSS detection, circuit 320 for controlling reception or transmission of a data channel, and circuit 330 for switching between a first mode and a second mode, i.e., switching between PoSS detection performed by circuit 310 and reception or transmission of a data channel performed by circuit 320. Circuit 305 may be used in a base station. Circuit 305 includes circuit 350 for PoSS transmission to a terminal, circuit 360 for controlling reception or transmission of a data channel intended for the terminal, and circuit 370 for switching between a first mode and a second mode, i.e., switching between PoSS transmission performed by circuit 350 and reception or transmission of a data channel performed by circuit 360.

[0023] For ease of explanation, the above-mentioned period during which the terminal monitors the first set of resources may be referred to as a power saving period, and the state of the terminal during such period may be referred to as a power saving mode. Furthermore, the above-mentioned period indicated in the monitored control signal may be referred to as an active period, and the state of the terminal during such period may be referred to as an active mode.

[0024] In other words, according to some embodiments, a terminal can operate in two mutually exclusive modes: a power saving mode and an active mode. In the power saving mode, the terminal monitors a power saving signal (PoSS) but does not monitor a standard PDCCH. In the active mode, the terminal monitors a standard PDCCH. The term "standard" in this context refers to a PDCCH such as the PDCCH in LTE and Release 15 NR.

[0025] Because monitoring the PDCCH consumes some power, providing a mode in which the PoSS is monitored rather than the PDCCH can facilitate some power savings, especially when monitoring the second set of resources consumes more power than monitoring the first set of resources. For example, the power consumption for monitoring the PoSS may be less than the power consumption for monitoring the PDCCH. This is the case, for example, when a PoSS is provided with fewer monitored decoding candidates and / or when the PoSS uses a narrower bandwidth than the PDCCH. In other words, power savings can be achieved when there are fewer blind decodings.

[0026] The PoSS is located within a first resource set to be monitored. The first resource set may be defined by one or more symbols and / or one or more slots in the time domain, and by one or more subcarriers and / or one or more physical resource blocks in the frequency domain. However, the present disclosure is not limited thereto, and the first resource set may be further defined by a code (e.g., a scrambling sequence or a spreading sequence), an antenna port, and / or one or more indexes of a sequence ID or a device ID, in addition to or instead of the above examples. The first resource set may be defined as a periodic pattern (e.g., a period in the time domain and / or the frequency domain) in the system resources. The length and period of the signal may be specified (e.g., in the time domain and / or the frequency domain). The first resource set may be predefined by a standard, for example, as fixed, or depending on certain transmission and / or traffic parameters. Alternatively or additionally, the first resource set may be configurable, for example, via signaling, such as an RRC protocol.

[0027] In one example, the limited resource configuration in the power saving mode may be defined with some relative offset to some synchronization signals or reference signals. Specifically, the first resource set may be arranged at a fixed interval or an interval set by a radio resource control protocol from the resources allocated for the synchronization signals or reference signals. For example, in terms of LTE or NR terminology, the first resource set may be configured relative to the positions of one or more synchronization signal blocks (SSBs) and / or one or more tracking reference signals (TRSs) and / or one or more channel state information reference signals (CSI-RSs). The SSBs may be used for synchronization with a specific base station, the TRSs may be used for tracking synchronization including phase, and the CSI-RSs may be used by the terminal to measure channel quality and provide the measured quality to the base station as feedback regarding the channel quality.

[0028] The intervals to the synchronization signal and / or reference signal may be variable depending on transmission and / or traffic parameters, or may be configurable by signaling, such as RRC signaling. Here, traffic parameters may include traffic type and traffic parameters, such as delay sensitivity, traffic volume, target quality in terms of error rate, etc. Transmission parameters may include parameters such as channel quality, applied modulation and coding, power, numerology, etc. The above-mentioned relative positions do not necessarily mean that the PoSSs are included at an offset relative to each SSB. The frequency of the PoSSs may be the same as, less than, or more than the frequency of the SSBs (and / or TRS and / or CSI-RS, or any kind of reference signal). The ratio between the frequency of the PoSSs and the frequency of the synchronization signal and / or reference signal may be derivable or fixed based on parameters, such as traffic parameters or transmission parameters, and / or may be configurable by some signaling, such as RRC signaling. Note that the above examples are not exhaustive and more settings and parameters are possible.

[0029] The PoSS may be considered as a signal that, when received by a terminal, causes the terminal to switch from a power saving mode to an active mode. This may be done in any way, such as:

[0030] In a first example, the presence of a PoSS signal in the first resource set causes the terminal to switch from power save mode to active mode. The absence of a PoSS signal in the first resource set causes it to remain in power save mode. This example provides a very simple yet efficient switching mechanism. When a PoSS signal is present, the first resource set can further include resources for indicating the active period length and further parameters if necessary.

[0031] In a second example, the PoSS signal is always transmitted in PoSS, but can take different values: a first value can indicate that the terminal should switch from the power save mode to the active mode, and a second value different from the first value can cause the terminal to remain in the power save mode.

[0032] As described above, outside the active period, during a power saving period, if the monitored control signal includes an indicator having a second value, the processing circuitry can cause the receiver to continue monitoring the control signal on the first set of resources and not receive or transmit signals on the second set of resources.

[0033] The second resource set may include, for example, PDCCH resources, but is not necessarily limited to PDCCH resources, and may include some reference signal resources different from the PDCCH resources and / or additional signaling resources, such as paging resources.

[0034] In an exemplary embodiment, in power saving mode, the terminal monitors only PoSS (apart from synchronization signals) but does not monitor signaling or data. Some reference signals may be monitored, but do not necessarily have to be. Thus, the paging channel is also not monitored. This exemplary embodiment can facilitate very efficient power saving.

[0035] According to an exemplary embodiment, in the active mode, the terminal does not monitor the first set of resources. Since the first resources also define the length of the active period after obtaining the PoSS with a value that indicates switching to the active mode, monitoring the PoSS in the active mode is unnecessary. After the active period, the terminal returns to the power-saving mode. This approach can facilitate saving some power and resources even in the active mode.

[0036] However, the present disclosure is not limited to this embodiment. The PoSS signal may be monitored on a first set of resources when the terminal is in active mode. Alternatively, the PoSS signal may be monitored on a third set of resources that is the same as or different from the second set of resources, but different from the first set of resources. In either case, the present disclosure also provides an embodiment in which the first set of resources may include the PoSS signal but does not include an indication of the active period. In such a case, the PoSS signal in active mode is used to switch the terminal from active mode to power saving mode. Note that a first value of the PoSS signal can be used to switch from power saving mode to active mode, while a second value of the PoSS signal can be used to switch back from active mode to power saving mode. The first and second values of the PoSS signal are different.

[0037] In other words, in an exemplary embodiment, during operation, the circuitry monitors control signals on the first set of resources when the mobile device is in the second mode (active mode), and sets the mobile device to the first mode after the active period if the monitored control signals include an indicator (PoSS) having a second value.

[0038] Some of the advantages of providing PoSS signals in power saving mode are facilitated in that it can provide both shorter latency and power savings. When traffic arrives, terminals can be scheduled in a timely manner. Monitoring PoSS can consume less power, resulting in lower power consumption. When there is no traffic for an extended period, monitoring only PoSS can consume less power than PDCCH blind decoding in DRX-on periods.

[0039] In the context of DRX applied in RRC_CONNECTED mode, the above embodiment still monitors the PoSS in power saving mode, whereas the signaling channel is not monitored during the DRX off period. In the above embodiment, the UE can dynamically return from power saving mode to active mode, or the UE can remain in power saving mode based on a short PoSS period. In contrast, in DRX, the UE cannot dynamically transition from an off period to an on period, but can only switch at a configured timing. As a result, the traffic adaptation capability and DRX method of the above embodiment are different. In particular, in the above embodiment, if no traffic is scheduled, the UE does not need to enter active mode, which can facilitate power saving. In contrast, in the DRX method, even if there is no traffic, the UE needs to enter an on period to monitor one or more PDCCHs for a configured period, which may lead to power waste.

[0040] It should be noted that both the first mode and the second mode may be defined in the RRC_CONNECTED state of the terminal. However, this is not a limitation of the present disclosure, and embodiments in which the second mode corresponds to the RRC_CONNECTED mode are also envisioned, as shown below. The present disclosure is also applicable to embodiments in which both the first mode and the second mode (power saving mode and active mode) are in the RRC_IDLE mode.

[0041] Two embodiments are described below. In one of these embodiments, the control information obtained from the first resource set upon detecting a PoSS relates to resource candidates for the control information to monitor (such as a PDCCH). In the other embodiment, the control information includes second resource information related to one or more resources or resource candidates for a data channel (such as a PDSCH or a PUSCH). A third embodiment, further described below, assumes that the control information also provides one or more bits indicating whether the control information includes first resource information related to a control channel or second control information related to a data channel. The one or more bits can be generated by using the UE ID or the RNTI.

[0042] (PoSS with PDCCH occasion) In an exemplary and non-limiting embodiment, upon receiving the PoSS, the terminal transitions to an active mode, and upon transitioning to the active mode, begins monitoring the PDCCH to receive scheduling grants.

[0043] In other words, during operation, when the circuit configures the mobile device from the first mode to the second mode, the circuit determines, based on an indication included in the monitored control signal and / or the mobile device's identification information, resource candidates (e.g., search spaces) to monitor in a physical downlink control channel (e.g., PDCCH) to receive scheduling information (e.g., included in DCI). The circuit then controls the transceiver to receive (e.g., blindly decode) signals in the resource candidates and determine data resources for downlink or uplink data transmission based on the received signals (e.g., DCI including a downlink or uplink grant) in the resource candidates. Finally, the circuit controls the transceiver to receive (downlink direction) or transmit (uplink direction) data in the determined (e.g., granted) data resources.

[0044] Therefore, in this embodiment, after transitioning to the active mode, the first resource on which data will be received or transmitted by the terminal is determined in the terminal based on PDCCH reception, similar to any other resource in the active mode. Specifically, after transitioning from the power saving mode to the active mode, future resource candidates for data scheduling in the PDCCH are determined based on an indication in information accompanying the PoSS in the first resource set, such as CORESET information or blind decoding candidates. For example, in the PoSS, a limited set of CORESET and / or blind decoding candidates may be indicated to assist terminal reception in the second resource set. This can reduce the power consumption of the terminal when performing PDCCH blind detection. Generally, the term CORESET refers to a control resource set, which is a set of resources used for control signaling in NR.

[0045] Alternatively or additionally, such candidates may be determined depending on the identity of the terminal. The determination of blind decoding candidates and / or CORESET and / or search space in the second resource set may be related to / calculated by the ID detected in the PoSS. In other words, the location of the resource may be determined by calculating the location depending on the ID.

[0046] The signaling information for configuring the PDCCH may include an indication of minimum and maximum aggregation levels, whether the candidates are localized or distributed, transmission parameters for the candidates, and so on.

[0047] Figure 4 shows a schematic diagram of the timing of the power saving mode and the active mode, as well as the PoSS and PDCCH resources. In particular, Figure 4 shows an "off period" corresponding to a power saving period in which the first set of resources is monitored, rather than the second set of resources. In a PoSS occasion (first set of resources), a PoSS is actually detected, and upon detecting the PoSS, the terminal transitions to an "on period" corresponding to the active mode described above. The on period and the off period are divided into time slots, some of which include PDCCH resources monitored by the terminal in the active period (on period). In the off period, the terminal does not monitor the PDCCH.

[0048] In Figure 4, the arrow from the PoSS to the PDCCH blind decoding (candidate) resource indicates that the PoSS can also provide an indication of the PDCCH resource. In this example, the PDCCH is monitored in five consecutive time slots starting after an offset from the PoSS signal, where the offset is zero. That is, the first PDCCH monitored is located in the slot immediately following the slot in which the PoSS was located. However, the present disclosure is not limited to this approach, and the offset in terms of time slots and / or symbols may not be zero.

[0049] 5 shows another exemplary embodiment in which the PDCCH is not monitored in each slot after switching from the power saving mode to the active mode. Instead, the PDCCH is monitored at a frequency that may be fixed (e.g., defined in a standard) or variable. The variability may be achieved depending on other parameters, such as numerology, that are configurable by signaling from the base station to the terminal (e.g., by RRC signaling).

[0050] The disclosed approach is more flexible than DRX because the power saving mode can be dynamically terminated by the reception of a PoSS, in which the UE automatically transitions to active mode when the off period ends, regardless of whether there is actual traffic to the UE or not.

[0051] In LTE and NR, Hybrid Automatic Repeat Request (HARQ) is employed to correct transmission errors. To save resources, multi-process stop-and-wait HARQ is used, which implicitly determines the location of resources for transmitting an acknowledgment (positive acknowledgment (ACK) or negative acknowledgment (NACK)) based on the location of resources allocated (scheduled) for the transmission of the data being acknowledged.

[0052] According to an exemplary implementation, in any of the above-described embodiments and examples, when the UE detects a PoSS, the UE transitions to an active mode and determines resource candidates (PDCCH) for data scheduling as well as resources for HARQ acknowledgment based on an indication or UE ID accompanying the PoSS. Specifically, the HARQ feedback resource is determined based on the scheduled PDSCH and PUSCH resources (e.g., based on an indication in the PDCCH and / or based on the UE ID). In other words, the indication in the PoSS (and / or the detected ID) may include parameters used to calculate the HARQ-ACK resource.

[0053] In other words, in one exemplary embodiment, during operation, the circuitry determines resources for receiving or transmitting transmission acknowledgments corresponding to the determined data resources based on instructions contained in the monitored control signals and / or identification information of the mobile device.

[0054] In summary, when the UE detects PoSS in power saving mode, the UE may determine one or more of the following: future PDCCH resources (based on the PoSS or additional instructions accompanying the PoSS in the first resource and / or UE identity information); - a resource for HARQ feedback (based on the PoSS or additional instructions accompanying the PoSS in the first resource and / or UE identification information) - Timing information for returning from active mode to power saving mode

[0055] (PoSS with data channel scheduling) In an exemplary and non-limiting embodiment, upon receiving the PoSS, the terminal transitions to an active mode and determines future resources for data in the PUSCH and / or PDSCH based on the indication in the PoSS (or more generally based on the indication in the first set of resources) and / or based on the terminal identity.

[0056] In other words, during operation, when the circuitry configures the mobile device from the first mode to the second mode, it determines a data resource for downlink or uplink data transmission based on an indication included in the monitored control signal and / or identification information of the mobile device, and controls the transceiver to receive or transmit data on the determined data resource.

[0057] Figure 6 shows an example of such a procedure. In a power saving mode (off period), a PoSS signal is received on a first set of resources that also includes an indication of the PDSCH resources on which the terminal is to receive data. This causes the terminal to transition to an on period and receive data on the indicated PDSCH resources, as indicated by the arrows starting with the PoSS signal and ending with the respective PDSCH resources in the time slot after the time slot containing the PoSS signal. The first resources also indicate the timing of the transition from the active mode (on period) back to the power saving mode (off period). Thus, as shown in Figure 6, after the on period, at a specified timing or period, the terminal transitions back to the power saving mode.

[0058] It should be noted that the first resource carrying the PoSS may indicate, with each PoSS, the period during which the terminal will return to the power saving mode. However, in some embodiments, such an indication is not necessarily provided with each PoSS. In other words, such an indication may convey timing applicable to multiple subsequent transitions. For example, the timing may be signaled only if it changes.

[0059] As already mentioned above, in some embodiments, the period or timing of switching to the power saving mode when in the active mode does not need to be signaled in the first resource set or in the PoSS. Such period or timing may be fixed, as long as it is predefined by the standard, or may be variable. Alternatively, such timing may be set by the base station or another network node via control signaling, such as RRC, etc.

[0060] Also, in some embodiments, the period or timing for switching to the power saving mode when in the active mode is signaled by the PoSS in the first set of resources. Such period or scheduling pattern or timing information may have multiple options configured by RRC signaling. Among those options, the PoSS indicates one of those options to the UE.

[0061] In FIG. 6, the PDSCH resources are arranged in consecutive time slots. However, this does not limit the present disclosure. As shown in FIG. 7, the PDSCH resources may be arranged periodically in specific time slots. Generally, the PDSCH resources may be defined by a starting position and length in the time domain and / or frequency domain, or by a starting position, length, and frequency in the time domain and / or frequency domain. The starting position may be predefined, for example, to be set to the next slot after the PoSS slot (the slot in which the PoSS signal was arranged) or the nth slot after the PoSS slot. Alternatively or additionally, the time domain resources may be defined based on symbols rather than (only) based on time slots. Similarly, the resources may be defined in the frequency domain.

[0062] In the above examples of Figures 6 and 7, data transmission is via PUSCH. However, the present disclosure is not limited thereto. The resource allocation is not necessarily for transmission in the downlink. The resource allocation may be an allocation of resources for the uplink (e.g., for PUSCH) or may be an allocation of resources for both PDSCH and PUSCH.

[0063] Furthermore, in an exemplary embodiment, during operation, the circuitry determines resources for receiving or transmitting a transmission acknowledgement corresponding to the determined data resource based on an indication included in the monitored control signal and / or the mobile device's identification information. In other words, resources for HARQ feedback may be configured according to PDSCH and / or PUSCH resources given by the PoSS resources. Furthermore, these HARQ resources may be configured according to the PoSS either implicitly (since the PDSCH and PUSCH are determined based on the PoSS) or explicitly by signaling the location and / or timing of the resources among the communication system's resources. Furthermore, the resource location may depend on the terminal identification information.

[0064] The HARQ feedback resources for uplink data transmission in the PUSCH are downlink resources, whereas the HARQ feedback resources for downlink data transmission in the PDSCH are uplink resources.

[0065] In summary, according to the above-described exemplary embodiment, after detecting the PoSS, the UE transitions to the active mode and determines future resources for the data PDSCH / PUSCH based on an indication in the PoSS (or, more generally, an indication in the first resource set) and / or based on the terminal identity (any ID, such as a sequence or RNTI associated with the UE). Furthermore, one or more resources for feedback may be determined corresponding to the PDSCH and / or PUSCH based on the indication in the PoSS and / or based on the terminal identity. Furthermore, timing information for transitioning from the active mode back to the power saving mode (off period) may be defined in the first resource set, specifically by the PoSS signal.

[0066] It should be noted that while HARQ acknowledgements or feedback are mentioned above, these are only non-limiting examples. The resources that may be determined based on PoSS and / or UE ID may be resources for any type of feedback, including non-hybrid ARQ, or even resources for various types of feedback, such as channel quality feedback based on channel condition and / or traffic measurements.

[0067] Some example implementations of this embodiment may provide additional advantages, for example, in DRX, when an off period ends, the UE automatically transitions to active mode, regardless of whether there is traffic scheduled to be transmitted or received by the terminal.

[0068] Selection between PoSS with PDCCH indication and PoSS with data channel scheduling Following the above-mentioned PoSS with PDCCH occasions and PoSS with data channel scheduling, it should be noted that these may be, but are not necessarily, exclusive options. In this exemplary embodiment, the choice between these two approaches may be performed such that the terminal can do both, controlled by the base station (or by a network node in general).

[0069] In other words, in this embodiment, the circuitry, in operation, configures the mobile device from the first mode to the second mode based on the aforementioned instruction and / or the identification information of the mobile device, and / or based on traffic: - resource candidates monitored in the physical downlink control channel to receive scheduling information for scheduling data resources for downlink or uplink data transmission are determined in response to an indication included in the monitored control signal and / or an identification of the mobile device, or directly, the data resources for downlink or uplink data transmission are determined in response to an indication contained in the monitored control signal and / or an identification of the mobile device; Select .

[0070] Specifically, in one example, when the UE detects the PoSS, the UE transitions from the power saving mode to the active mode. The PoSS (or the first resource set, which also includes the PoSS) is a set of resources that the UE detects when: i) proceed to monitor future PDCCHs (solution described above under "PoSS with PDCCH Occasions"), or ii) directly receive PDSCH or transmit PUSCH (solution described above under "PoSS with Data Channel Scheduling"), or It also indicates whether it is one of the following:

[0071] The indicated behavior i) or ii) may be valid within a certain timing window. The timing window may be dynamic, e.g., the timing window may also be indicated in the first set of resources including the PoSS. Alternatively or additionally, the selection of the above behavior i) or ii) may be based on the detected UE ID, sequence ID, and / or RNTI.

[0072] Alternatively or additionally, there are other options for selecting the desired behavior i) or ii). The UE behavior option may be selected based on different traffic arrival patterns. For example, the RRC may configure such options, and the PoSS may select between such options. As an illustrative and non-limiting example, RRC signaling may provide several possible configurations for different parameters and may provide the above-mentioned possible UE behaviors with their respective indices. The PoSS can indicate which of these behaviors the terminal should follow by signaling the corresponding index.

[0073] One possible benefit of providing such an option is to facilitate traffic adaptation to different traffic characteristics. This can accommodate cases where data arrival and scheduling are predictable or unpredictable from the gNB side. If data arrival / scheduling is predictable, the PoSS can select one of the configurations in the RRC to match the upcoming data arrival / scheduling pattern / profile, for example, by selecting the possibility of scheduling the data channel (PDSCH, PUSCH) directly at the PoSS. In some embodiments, the PoSS can indicate one of the RRC configurations with parameters aligned with the traffic arrival and characteristic profile. If data arrival / scheduling is not predictable, the PoSS can choose to simply indicate to the UE to monitor the upcoming PDCCH. Predictability can be determined based on the service type. For example, two-way voice conversations are likely to have similar characteristics over time. Other types of traffic may be more difficult to predict.

[0074] In any of the above embodiments and examples, the mobile device identification information is at least one of a pseudo-random sequence from a set of orthogonal or quasi-orthogonal sequences and a Radio Network Temporary Identifier (RNTI). Generally, when UE or terminal identification information is mentioned above, any number or label or any kind of identifier associated with the UE / terminal is intended. For example, such an identifier may be a sequence by which the PoSS signal is scrambled or spread. Such a sequence may be any scrambling or spreading sequence from a set of mutually orthogonal or quasi-orthogonal sequences. Alternatively or additionally, the identification information may be the RNTI assigned to the terminal.

[0075] As mentioned above, the present disclosure also provides corresponding methods that can be executed by a terminal or a base station, specifically by a processor incorporated in either of them. Furthermore, a non-transitory computer-readable medium can be provided that stores code instructions that, when executed on a computer or processor, perform the respective method steps. Such a medium can be any storage device, such as a hard drive, non-volatile memory, SSD, optical storage, or magnetic storage, etc.

[0076] These methods are shown in Figure 8. A method that may be performed by a terminal may include monitoring a signal on a first set of resources (steps 810, 820), and if the monitored signal includes a mobile device identity and an indicator having a first value (yes in step 820), receiving or transmitting a signal on a second set of resources (step 850), and controlling the transceiver to not receive or transmit a signal on the second set of resources and monitor a control signal on the first set of resources after a period of time indicated in the monitored control signal (arrow back to step 810). As described above, PoSS detection (step 820) may be followed by monitoring a scheduling channel for receipt of a grant (steps 830, 840).

[0077] Another method may be performed in a base station. Such a method may include transmitting a signal addressed to a terminal (mobile device) on a first set of resources (step 860), and, if the monitored signal includes the mobile device's identity and an indicator having a first value (yes in step 870), receiving or transmitting a signal on a second set of resources (step 890), and controlling a transceiver to not receive or transmit a signal on the second set of resources and to transmit a control signal on the first set of resources after a period indicated in the transmitted control signal. The method may further include transmitting a scheduling channel (e.g., a PDCCH) including a grant to the terminal to transmit or receive data in step 890 (step 880).

[0078] In the following, exemplary interactions between a network and a terminal according to one embodiment are described. The network may be represented by a network node such as a base station (eNB or gNB). However, other network entities may be used. The following examples are described in an NR context and applying NR terminology. However, this is for illustrative purposes only, and the present disclosure is not limited to a particular communication system.

[0079] The gNB configures parameters related to power saving and scheduling operations for a UE or a group of UEs. This configuration may be performed, for example, according to an operator configuration and / or according to UE capabilities in the cell and / or other parts of the network, traffic in the cell and / or other parts of the network, load in the cell and / or other parts of the network, channel quality, service requirements, cell deployment scenarios, etc. The UE receives the PoSS configuration from the gNB. This configuration is performed by RRC signaling or broadcast signaling, such as UE-specific RRC signaling, or default parameters (e.g., specified in a standard), including one or a combination of the following information elements: - One or more UE IDs or UE ID derived parameters (e.g., RNTI). Note that in general, multiple IDs can be used to allow the UE to make a behavior selection based on which ID is detected. The IDs and corresponding UE behavior and parameter settings can be configured in RRC, for example, by UE-specific signaling. - The sequence ID used for the first part of the PoSS, which can be derived from the UE ID or related parameters (e.g., RNTI). This sequence can serve as a reference signal for the PoSS. In other words, the PoSS can include two parts: a reference signal part and a control channel part. For example, the PoSS can be formed as a DMRS (Demodulation Reference Signal) and control information, or as a synchronization signal and control information. The control information can be mapped to different time / frequency resources than the reference signal, or to the same time / frequency resources (if the control information can be indicated by the selection of this sequence from several possible sequences). However, these are only examples, and other embodiments are possible. The PoSS can simply be formed by a sequence different from this sequence or DMRS or SSB, or by any other sequence used for other purposes in combination with the control information. - time and frequency domain resources used by the first and / or second part of the PoSS, where the first part of the PoSS represents the receipt of an indication that a transition from a power saving mode to an active mode is to be made, in other words, the first part represents the part that contains the PoSS, and the second part is control information specifying the duration of the active mode or further parameters such as the parameters below and above. - The time domain, frequency domain, and / or code domain resources used by the first part. This may be specified by the starting slot / symbol and when the terminal needs to check whether the PoSS was actually transmitted or what value the PoSS has. The UE may be required to monitor the first part of the PoSS on specific time domain, frequency domain, and / or code domain resources. In this example, after the UE is able to detect the first part of the PoSS, the UE can proceed to detect the second part of the PoSS, which contains control information or further control information (if the first part of the PoSS also carries any information). Time and / or frequency domain resources to be used for the second part of the PoSS, e.g., PDCCH. For example, the RRC configuration may specify a search space configuration for the PDCCH to be monitored after reception of the first part.

[0080] It should be noted that the frequency domain resource configuration (PoSS or PDCCH or PDSCH or PUSCH, for whatever purpose, transmitted in RRC signaling and / or within the first set of resources) may include an indication of the bandwidth portion. The calculation of the actual resource location may be associated with the UE ID or related parameters (e.g., RNTI) as described above. The time domain resource configuration may include periodicity and offset parameters as described above. Furthermore, the time domain resource configuration may include a time / beam index or a PoSS index (for beam-sweeping use cases). In other words, the PoSS may be transmitted with a sequence of different beam-pointing directions and beams. The association of the beam-pointing direction between the PoSS index (or time index) and the further PDCCH / PDSCH / PUSCH is determined by RRC signaling.

[0081] In summary, the UE receives a configuration from the base station, eg, via RRC signaling, and uses this configuration to monitor the PoSS and / or PDCCH.

[0082] By detecting the PoSS described above, the UE decides on one or a combination of the following behaviors: In other words, the PoSS may contain or be accompanied by an indication of further parameters that control the UE behavior: - Transition from power saving mode (also called sleep or off mode) to active (also called awake or on) mode. In particular, the first set of resources can carry an indication of when the terminal will switch from power saving mode to active mode. In one example, the switch is dynamically indicated by PoSS from the base station to the terminal. - Transition from active (on) mode to power saving mode (or sleep or off mode) within a specific time. In particular, the first set of resources can carry an indication of when the terminal will switch from active mode to power saving mode. In one example, the switch is dynamically indicated by PoSS from the base station to the terminal on either the first set of resources or the second set of resources. Triggering a transition from RRC_INACTIVE / IDLE mode to RRC_CONNECTED mode: Based on successful detection of PoSS, a transition from RRC_INACTIVE / IDLE mode to RRC_CONNECTED mode may be triggered as described above for triggering between power saving mode and active mode. Triggering a transition from RRC_CONNECTED mode to RRC_INACTIVE / IDLE mode. After the above trigger from the power saving mode (first mode) to the active mode (second mode), a corresponding switch from the RRC_CONNECTED mode back to the RRC_INACTIVE / IDLE mode may be performed as described in the above embodiment for switching from the active mode back to the power saving mode. Specifically, this may be performed after a predetermined timing, such as a timing given by PoSS signaling, a timing set by RRC, or a timing defined by a standard. Alternatively, the switch may be performed by detecting a PoSS signal having a value indicating such a switch. - Determining bandwidth portion or numerology (subcarrier spacing) information, which may be indicated in the PoSS (generally the first set of resources) for reception of PDCCH and / or PDSCH or PUSCH. Determining time domain and frequency domain resources to be used by future Physical Downlink Control Channel (PDCCH) detection according to the indication in the PoSS, which may be: PDCCH time and / or frequency domain resource indication, which may be a new CORESET specifically defined for PoSS. -Time and / or frequency domain candidate resources for PDCCH blind detection, which may be associated with the UE ID or the configured RNTI, in other words, a search space configuration or at least one parameter for the search space configuration. - determining scheduled or configured PDSCH resources for one or more slots, decoding a transport block (TB) on the PDSCH resources, transmitting a HARQ-ACK, and then transitioning to a power saving mode (a transport block is defined in LTE and NR as a data unit provided from the Medium Access Control (MAC) layer to the physical layer for transmission within one transmission time interval, e.g., one transmission via a PDSCH or a PUSCH). In other words, upon termination of the scheduled PDSCH transmission upon reception of a PoSS and a corresponding PDSCH resource indication in the PDCCH or directly in the first set of resources, the terminal can automatically transition back to the power saving mode. - determining PUSCH resources (with or without grants) for one or more slots, and transitioning to a power saving mode after transmitting data on the PUSCH resources and not receiving a retransmission scheduling within a certain period of time. In other words, when a PUSCH transmission scheduled by receiving a PoSS and a corresponding PUSCH resource indication in the PDCCH or directly in the first set of resources ends, the terminal can automatically transition back to the power saving mode.

[0083] When the UE detects various parameters in the PoSS resource, it determines one or a combination of the above-mentioned behaviors based on the detected RNTI type used for CRC scrambling in the detected PoSS. For example, one RNTI (first RNTI) may be reserved to indicate that the UE listens to the PDCCH after receiving the PoSS, while another RNTI (second RNTI) may be reserved to indicate that the UE directly receives the PDSCH or PUSCH. The first RNTI or the second RNTI may be used to scramble or spread the PoSS signal so that both RNTIs are tried in blind decoding of the PoSS.

[0084] Alternatively or additionally to detection by using the RNTI, the UE may determine one or a combination of behaviors based on a sequence ID or index detected in the PoSS that is different from the RNTI. Note that the term "behavior" here refers to any of the parameters and settings mentioned above, and does not include only the decision regarding whether the PDCCH or the data channel is received directly after transitioning to the active mode. Rather, the behavior can also include channel settings (search space for the PDCCH, receive or transmit resources, HARQ resources, the time at which the terminal switches back to the power saving mode when switched to the active mode, etc.).

[0085] Additionally or alternatively, the terminal may decide on one or a combination of behaviors based on the time / frequency / code resources used by the detected PoSS and / or based on explicit instructions in the detected PoSS.

[0086] According to an exemplary embodiment, the terminal determines a quasi-colocation (QCL) relationship or beam index association between the PoSS and the upcoming received PDCCH based on the time / frequency / code domain resources of the detected PoSS or based on the time index (beam index) explicitly indicated in the detected PoSS. This QCL determination may be particularly relevant to embodiments in which PoSS detection is followed by monitoring the PDCCH for data channel allocation. The QCL concept is utilized in NR and can be explained in a simplified form as follows: if two signals are QCL, this means that the UE can assume the same reception / transmission parameters in large-scale channel parameters, such as Doppler shift, Doppler spread, mean delay, delay spread, spatial reception parameters, and beam pointing direction. This helps improve UE channel estimation performance.

[0087] Alternatively or additionally, the terminal determines the QCL relationship or beam index association between the detected PoSS and the upcoming PDCCH / PDSCH / PUSCH based on the time / frequency / code domain resources of the detected PoSS or the time index (beam index) explicitly indicated in the detected PoSS. This QCL determination may be particularly relevant to embodiments in which PoSS detection is followed by direct transmission or reception of data on the PDSCH or PUSCH. In other words, the UE can assume a QCL between the detected PoSS and the upcoming PDCCH / PDSCH / PUSCH.

[0088] With respect to the PUSCH, the terminal can determine the DL-UL beam correspondence between the PoSS (in the downlink (DL)) and the PUSCH (in the uplink (UL)) to be transmitted in the future based on the time / frequency / code domain resources of the detected PoSS or the time index (beam index) explicitly indicated in the detected PoSS.

[0089] Alternatively or additionally, the terminal determines the DL-UL beam correspondence between the PoSS and the PUCCH to be transmitted based on the time / frequency / code domain resources of the detected PoSS or the time index (beam index) explicitly indicated in the detected PoSS. The PUCCH is a physical uplink control channel that can be used, for example, to transmit feedback regarding data transmission in the downlink. The PUCCH can carry, for example, acknowledgements (positive acknowledgements and / or negative acknowledgements) and / or channel quality measurement results.

[0090] The PoSS signal may be a signal of known shape and / or power (at the receiver and transmitter, i.e., at the terminal and base station) so that it can be used as a reference signal. For example, according to one embodiment, a terminal performs radio resource management (RRM) measurements by receiving the PoSS configured as described above. RRM functions include, for example, handover control, congestion control, and call admission control. Here, the PoSS may be used, for example, to determine suitable cells for receiving and / or transmitting signals. In other words, RRM measurements and reports may be based on the reception of the PoSS in addition to the currently measured objects, i.e., SSB and / or CSI-RS.

[0091] As already mentioned above, in power saving mode, the terminal can start detecting the second part of the PoSS (e.g. PDCCH, PUCCH, PDSCH, PUSCH) only after detecting a sequence in the PoSS. The sequence can be any sequence associated with the UE, i.e. a sequence scrambled with a UE ID, such as RNTI, etc.

[0092] After receiving the PoSS, the detection of future PDCCH by the UE may be performed as paging (e.g., when running in RRC_IDLE mode, the UE may start monitoring for paging after the PoSS is detected, or the PoSS may replace the paging), and in this case, it should be noted that the CRC (of the PDCCH scheduling or paging message) is scrambled with a special paging RNTI (P-RNTI), which may be a UE-specific or group-specific RNTI. In other words, the PDCCH for paging does not need to be monitored before receiving the PoSS via RRC configuration. Rather, the paging procedure may follow the PoSS reception.

[0093] The RNTI used in determining the terminal behavior after receiving the PoSS may be the C-RNTI, CS-RNTI, MCS-RNTI, SFI-RNTI, or a newly defined energy-saving RNTI, which may be configured as described above, for example, by RRC signaling. As a non-limiting illustrative example, if the UE's active behavior is controlled at a general, UE-specific level, the C-RNTI may be used. If the UE's active behavior reuses the current semi-permanent scheduling (SPS) configuration, the CS-RNTI may be used. An SPS configuration ID may be indicated in the PoSS, which may be UE-specific or UE group-specific. If the UE's active behavior is for a URLLC use case, the UE-specific MCS-RNTI may be used. If the UE's active behavior control reuses the current slot format indication (SFI) signaling configuration, the UE group-level SFI-RNTI may be used.

[0094] In an exemplary embodiment, when the UE detects a PoSS in which the CRC of the second part is scrambled with the C-RNTI, the UE determines the PDSCH / PUSCH resource allocation based on the indication in the PoSS.

[0095] When the UE detects a PoSS in which the CRC of the second part is scrambled with a specific new UE group RNTI or a UE-specific RNTI, the UE can determine future control channel resource locations based on the indication in the PoSS (e.g., in the second part of the PoSS).

[0096] When the UE detects a PoSS in which the CRC of the second part is scrambled with the SFI-RNTI, the UE can determine the future slot format (or future resource direction) based on the indication in the PoSS.

[0097] Therefore, during PoSS monitoring, the terminal needs to blindly decode only the resources configured for reception of the PoSS (first set of resources). The configuration possibilities are described in some examples above and may include dependencies on RRC, standard definitions, and / or some further parameters.

[0098] The time / frequency / code domain resources of the detected PoSS or the time index (beam index) explicitly indicated in the detected PoSS may be used for other purposes. For example, depending on one or more of them, the UE can determine UL power control spatial-related parameters. For example, in current standards, power control parameters include spatial or beam pointing direction information, which is like an index to enable different power control parameter settings for different beam pointing directions. UE transmit power control can use this information obtained from the PoSS. However, power control may alternatively or additionally include other parameters and may be determined by using the PoSS.

[0099] According to certain exemplary embodiments, when a UE detects a PoSS, the UE may follow one of the following behaviors depending on the detected sequence ID, index, or UE ID. - Determining PDSCH / PUSCH resource allocation based on the indication in the PoSS. - Determining future control channel resource locations (PDCCH and / or PUCCH) based on the indication in the PoSS. - Determining the future slot format (or future resource direction) based on the indication in the PoSS.

[0100] According to another exemplary and non-limiting embodiment, when a UE detects a PoSS, depending on the time / frequency / code resource location / index of the PoSS, the UE follows one of the following behaviors: - Determining PDSCH / PUSCH resource allocation based on the time / frequency / code resources of the detected PoSS or the included indication. - Determining future control channel resource locations (PDCCH and / or PUCCH) based on the time / frequency / code resources of the detected PoSS or the included indication. - Determining the future slot format (or future resource direction) based on the detected PoSS time / frequency / code resources or included instructions.

[0101] In other words, the time / frequency / code resource location / index of the PoSS determines which of the above three possible behaviors will be applied after the PoSS is detected.

[0102] In summary, PDCCH / PDSCH / PUSCH resource indication by PoSS may use any combination of input parameters, which may be the detected PoSS resource index, UE ID, RNTI, and explicit fields in the PoSS PDCCH.

[0103] The beam / QCL related or beam corresponding indication between the PoSS and the indicated future PDCCH / PDSCH / PUSCH / PUCCH may be assumed, e.g., may be fixed, or may be set by signaling such as RRC.

[0104] Power control related parameters (especially spatial information for PUSCH / PUCCH / SRS) may be derived from the detected PoSS. In other words, a sounding reference signal (SRS) configuration may be selected based on one or more PoSS parameters. Multiple SRS configurations may be possible, provided in the standard, or defined by RRC signaling, and the PoSS parameters may select an applicable SRS configuration from among them.

[0105] As described above, a mode switch from a power save mode to an active mode is triggered by the detection of a PoSS. However, the PoSS may be equally applicable for switching from an active mode to a power save mode. Specifically, the detection of a PoSS (rather than not detecting a PoSS in a first set of expected resources) may trigger a mode switch from a first mode to a second mode and a mode switch from the second mode to the first mode. Alternatively, there may be different values that the PoSS can take, where one value may indicate a switch from the first mode to the second mode and another value may indicate a switch from the second mode to the first mode.

[0106] The PoSS detection procedure can include two steps. In the first step, sequence detection is performed to determine whether a PoSS exists or what value the PoSS has. In the second step, the PDCCH configuration or the PDSCH / PUSCH configuration is detected. Although the above illustrates that both the first and second control information portions are determined in this order, this may be the case when they are both in the first resource. However, the present disclosure is not limited by such a configuration, and the first resource set may be distributed such that the first and second portions of the PoSS and the resources are separated in the time domain, frequency domain, and / or code domain.

[0107] The PoSS may be used for RRM measurements.

[0108] The present disclosure can be realized by software, hardware, or software cooperating with hardware. Each functional block, such as a circuit, used in the description of each embodiment above can be realized in part or in whole by an LSI, such as an integrated circuit. Each process described in each embodiment can be controlled in part or in whole by the same LSI or a combination of LSIs. An LSI can be formed as an individual chip, or a single chip can be formed to include some or all of the functional blocks. An LSI can include a data input / output unit coupled to it. Herein, an LSI may be referred to as an IC (integrated circuit), a system LSI, a super LSI, or an ultra LSI depending on the level of integration. However, the technology for realizing an integrated circuit is not limited to LSI, and can be realized using dedicated circuits, general-purpose processors, or dedicated processors. Furthermore, an FPGA (field programmable gate array), which can be programmed after LSI fabrication, or a reconfigurable processor, which can reconfigure the connections and settings of circuit cells arranged within an LSI, can also be used. The present disclosure can be realized using digital or analog processing. When LSI is replaced by future integrated circuit technology as a result of advances in semiconductor technology or other derivative technologies, the future integrated circuit technology can be used to integrate functional blocks. Biotechnology can also be applied.

[0109] Furthermore, the various embodiments may be implemented by means of software modules executed by a processor or directly in hardware. Software modules and hardware implementations may also be combined. The software modules may be stored on any kind of computer-readable storage medium, for example RAM, EPROM, EEPROM, flash memory, registers, hard disks, CD-ROM, DVD, etc. It should be noted that individual features of the different embodiments may also be the subject of other embodiments, either individually or in any combination.

[0110] Those skilled in the art will appreciate that numerous variations and / or modifications can be made to the present disclosure as set forth in the specific embodiments, and the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive.

[0111] In summary, there is provided a mobile device comprising: a transceiver that, during operation, receives and / or transmits a signal; and circuitry that controls the transceiver to, during operation, monitor a signal on a first set of resources, and if the monitored signal includes an identification of the mobile device and an indicator having a first value, receive or transmit a signal on a second set of resources, and after a time period indicated in the monitored control signal, not receive or transmit a signal on the second set of resources and monitor a control signal on the first set of resources.

[0112] For example, outside the period, if the monitored control signal includes an indicator having a second value, continue to monitor the control signal on the first set of resources and do not receive or transmit signals on the second set of resources.

[0113] The first set of resources may be spaced at a fixed interval or an interval set by a radio resource control protocol from the resources allocated for the synchronization signal or the reference signal.

[0114] Additionally, in one embodiment, the circuit does not monitor control signals on the first set of resources during the period of time during operation.

[0115] In one example, the mobile device is referred to as being in a first mode outside the period and in a second mode within the period, and the circuitry, during operation, monitors control signals on the first set of resources when the mobile device is in the second mode and sets the mobile device to the first mode after the power saving period if the monitored control signals include an indicator having a second value.

[0116] In particular, the mobile device is referred to as being in a first mode outside the period and in a second mode within the period, and in operation, the circuitry, upon configuring the mobile device from the first mode to the second mode, determines resource candidates to be monitored in a physical downlink control channel to receive scheduling information based on an indication included in the monitored control signal and / or identification information of the mobile device, controls the transceiver to receive signals on the resource candidates, determines data resources for downlink or uplink data transmission based on the received signals on the resource candidates, and controls the transceiver to receive or transmit data on the determined data resources when the circuitry configures the mobile device from the first mode to the second mode.

[0117] According to one embodiment, the mobile device is said to be in a first mode outside the period and in a second mode within the period, and the circuitry, upon configuring the mobile device from the first mode to the second mode during operation, determines data resources for downlink or uplink data transmission based on instructions included in the monitored control signals and / or identification information of the mobile device, and controls the transceiver to receive or transmit data on the determined data resources.

[0118] Further, in some examples, during operation, the circuitry determines resources for receiving or transmitting transmission acknowledgments corresponding to the determined data resources based on instructions included in the monitored control signals and / or identification information of the mobile device.

[0119] In particular, the mobile device is referred to as being in a first mode outside the period and in a second mode within the period, and when configuring the mobile device from the first mode to the second mode, the circuitry selects, based on an identification of the mobile device and / or based on traffic, whether resource candidates to be monitored in the physical downlink control channel to receive scheduling information for scheduling data resources for downlink or uplink data transmission are determined in response to an indication included in the monitored control signal and / or the identification of the mobile device, or whether data resources for downlink or uplink data transmission are determined directly in response to an indication included in the monitored control signal and / or the identification of the mobile device.

[0120] Furthermore, in some exemplary embodiments, the mobile device identification information is at least one of a pseudo-random sequence from a set of orthogonal or quasi-orthogonal sequences and a radio network temporary identifier (RNTI).

[0121] In some embodiments, during operation, the circuit determines a QCL relationship or beam index association between the monitored control signal and a data channel in the second set of resources based on the time resource, frequency resource, or code resource of the detected control signal.

[0122] For example, monitoring a first set of resources involves fewer blind decodes than monitoring a second set of resources. In this manner, monitoring PoSS may be more power efficient.

[0123] According to another aspect, a network node is provided that includes: a transceiver that, during operation, receives and / or transmits signals; and circuitry that controls the transceiver to, during operation, transmit a signal intended for a mobile device on a first set of resources, and if the transmitted signal includes an identity of the mobile device and an indicator having a first value, receive or transmit a signal intended for the mobile device on a second set of resources, and after a period of time indicated in the transmitted control signal, not receive or transmit a signal on the second set of resources and transmit a control signal intended for the mobile device on the first set of resources.

[0124] For example, outside of the period, if the transmitted control signal includes an indicator having a second value, continue to transmit control signals on the first set of resources and do not receive or transmit signals (intended for the particular mobile device) on the second set of resources.

[0125] The first set of resources may be spaced at a fixed interval or an interval set by a radio resource control protocol from the resources allocated for the synchronization signal or the reference signal.

[0126] Additionally, in one embodiment, the circuitry, during operation, does not transmit control signals intended for the given mobile device on the first set of resources during the time period.

[0127] In one example, the mobile device is referred to as being in a first mode outside the period and in a second mode within the period, and the circuitry of the network node, during operation, transmits control signals on a first set of resources when the mobile device is in the second mode, and considers the mobile device to be in the first mode after the active period if the transmitted control signal includes an indicator having a second value.

[0128] In another example, during operation, when configuring the mobile device from the first mode to the second mode, the circuitry determines resource candidates to be monitored in a physical downlink control channel to receive scheduling information, includes a corresponding indication and / or includes identification information of the mobile device in a transmitted control signal, controls the transceiver to transmit signals on the resource candidates, determines (configures) data resources for downlink or uplink data transmission based on the transmitted signals on the resource candidates, and controls the transceiver to receive or transmit data on the determined data resources.

[0129] According to one embodiment, during operation, when configuring the mobile device from the first mode to the second mode, the circuitry determines (configures) data resources for downlink or uplink data transmission, includes corresponding instructions and / or includes identification information of the mobile device in a transmitted control signal, and controls the transceiver to receive or transmit data on the determined data resources.

[0130] Further, in some examples, during operation, the circuitry determines (sets) resources for receiving or transmitting a transmission acknowledgment corresponding to the determined data resource based on instructions included in the transmitted control signal and / or identification information of the mobile device.

[0131] In particular, in one example, when configuring the mobile device from the first mode to the second mode, the circuitry selects, based on the identification information of the mobile device and / or based on traffic, whether resource candidates to be transmitted to the mobile device in the physical downlink control channel for scheduling information for scheduling data resources for downlink or uplink data transmission are determined in response to an instruction included in the transmitted control signal and / or the identification information of the mobile device, or whether data resources for downlink or uplink data transmission are determined (set) directly in response to an instruction included in the transmitted control signal and / or the identification information of the mobile device.

[0132] Furthermore, in some exemplary embodiments, the mobile device identification information is at least one of a pseudo-random sequence from a set of orthogonal or quasi-orthogonal sequences and a radio network temporary identifier (RNTI).

[0133] In some embodiments, during operation, the circuit determines (sets) a QCL relationship or beam index association between the monitored control signal and a data channel in the second set of resources based on the time resource, frequency resource, or code resource of the detected control signal.

[0134] For example, monitoring a first set of resources involves fewer blind decodes than monitoring a second set of resources. In this manner, monitoring PoSS may be more power efficient.

[0135] Methods corresponding to steps performed by the above-described apparatus are also provided, including, for example, monitoring a signal on a first set of resources, and if the monitored signal includes an identification of the mobile device and an indicator having a first value, receiving or transmitting a signal on a second set of resources, and controlling a transceiver to not receive or transmit a signal on the second set of resources after a period of time indicated in the monitored control signal and to monitor the first set of resources for a control signal.

[0136] Further provided is a method including transmitting a signal on a first set of resources; and if the monitored signal includes an identification of the mobile device and an indicator having a first value, receiving or transmitting a signal on a second set of resources, and controlling a transceiver to not receive or transmit a signal on the second set of resources and to transmit a control signal on the first set of resources after a period of time indicated in the transmitted control signal.

Claims

1. A communication system including a mobile device and a network node, The mobile device a transceiver unit for receiving and / or transmitting signals; monitoring control signals on a first set of resources; If the monitored control signal includes an identification of the mobile device and an indicator having a first value, receiving or transmitting signals on a second set of resources; after a period of time indicated in the monitored control signal, not receiving or transmitting signals on the second set of resources and monitoring the control signal on the first set of resources. a circuit for controlling the transmitting and receiving unit in such a manner; Equipped with The circuit determines a quasi-co-location relationship or a beam index association between the monitored control signal and a data channel in the second set of resources based on a time resource, a frequency resource, or a code resource of the detected control signal; The network node a transceiver for receiving and / or transmitting said signals; transmitting the control signal to the mobile device on the first set of resources; a control circuit for controlling the transceiver to receive or transmit the signals on the second set of resources; Equipped with Communication system.

2. outside the period, the mobile device continues to monitor the control signal on the first set of resources and does not receive or transmit signals on the second set of resources if the monitored control signal includes the indicator having a second value. The communication system of claim 1 .

3. the first set of resources are spaced at fixed intervals or intervals set by a radio resource control protocol from resources allocated for synchronization signals or reference signals. The communication system of claim 1 .

4. the circuitry does not monitor the control signals on the first set of resources during the period; The communication system of claim 1 .

5. the mobile device is said to be in a first mode outside the period and in a second mode within the period; the circuitry monitors the control signals on the first set of resources when the mobile device is in the second mode, and sets the mobile device to the first mode after the period if the monitored control signals include the indicator having a second value. The communication system of claim 1 .

6. the mobile device is said to be in a first mode outside the period and in a second mode within the period; When the circuitry configures the mobile device from the first mode to the second mode, determining resource candidates to be monitored in a physical downlink control channel for receiving scheduling information based on an indication included in the monitored control signal and / or an identification of the mobile device; controlling the transceiver unit to receive signals on the resource candidates; determining a data resource for downlink or uplink data transmission based on the received signal on the candidate resources; controlling the transceiver unit to receive or transmit data in the determined data resource; The communication system of claim 1 .

7. the mobile device is said to be in a first mode outside the period and in a second mode within the period; When the circuitry configures the mobile device from the first mode to the second mode, determining data resources for downlink or uplink data transmission based on an indication included in the monitored control signal and / or an identification of the mobile device; controlling the transceiver unit to receive or transmit data in the determined data resource; The communication system of claim 1 .

8. the circuitry determines resources for receiving or transmitting a transmission acknowledgment corresponding to the determined data resource based on an indication included in the monitored control signal and / or identification information of the mobile device.

7. The communication system according to claim 6.

9. the mobile device is said to be in a first mode outside the period and in a second mode within the period; When the circuitry configures the mobile device from the first mode to the second mode, the circuitry configures the mobile device based on an identity of the mobile device and / or based on traffic. resource candidates monitored in a physical downlink control channel to receive scheduling information for scheduling data resources for downlink or uplink data transmission are determined in response to an indication included in the monitored control signal and / or an identification of the mobile device, or directly, the data resources for downlink or uplink data transmission are determined in response to an indication contained in the monitored control signal and / or an identification of the mobile device; Select The communication system of claim 1 .

10. The identification information of the mobile device is a pseudo-random sequence from a set of orthogonal or quasi-orthogonal sequences; a Radio Network Temporary Identifier (RNTI); and At least one of The communication system of claim 1 .

11. monitoring the first set of resources includes fewer blind decodes than monitoring the second set of resources. The communication system of claim 1 .

12. monitoring, by the mobile device, control signals on a first set of resources; If the monitored control signal includes a mobile device identification and an indicator having a first value, receiving or transmitting signals on a second set of resources; after a period of time indicated in the monitored control signal, not receiving or transmitting signals on the second set of resources and monitoring the control signal on the first set of resources. and controlling the transceiver by a mobile device, determining a quasi-co-location relationship or a beam index association between the control signal and a data channel in the second set of resources based on a time resource, a frequency resource, or a code resource of the control signal; transmitting, by a network node, the control signal on the first set of resources; transmitting or receiving, by the network node, the signal on the second set of resources; A method comprising:

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