User equipment and network node and methods implemented thereby

Abstract

The invention relates to a user equipment and a network node and methods implemented thereby. The user equipment includes: a transceiver receiving a control signal including a first control signal and a second control signal; and circuitry: monitoring the first control signal in a first set of resources; controlling the transceiver to receive the second control signal on a second set of resources when the monitored first control signal includes an identification of the user equipment and an indicator having a first value; and controlling the transceiver to receive a physical downlink control channel (PDCCH) and / or a physical downlink shared channel (PDSCH) on the indicated bandwidth portion when the received second control signal includes bandwidth portion information for receiving the PDCCH and / or the PDSCH.

Description

[0001] This application is a divisional application of the Chinese invention patent application with application date of September 26, 2018, application number 201880094491.7, and invention name “Power-saving signal and process design”. Technical Field

[0002] The present invention relates to the transmission and reception of signals in a communication system. In particular, the present invention relates to a method and apparatus for such transmission and reception. Background Art

[0003] Currently, the 3rd Generation Partnership Project (3GPP) is working on the next version (Release 15) of the technical specifications for the next generation of cellular technology, also known as the fifth generation (5G), which also includes the "New Radio" (NR) radio access technology (RAT), which operates in the frequency range up to 100GHz. NR is a follower of the current technologies represented by Long Term Evolution (LTE) and Advanced LTE (LTE-A). The NR plan promotes a single technical framework that addresses all defined use cases, requirements and deployment scenarios, including, for example, enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), massive machine type communications (mMTC), etc. For example, eMBB deployment scenarios may include indoor hotspots, dense urban, rural, urban macro cells and high-speed; URLLC deployment scenarios may include industrial control systems, mobile health (remote monitoring, diagnosis and treatment), vehicle real-time control, smart grid wide-area monitoring systems; mMTC may include scenarios with a large number of devices with non-time-critical data transmission (such as smart wearable devices and sensor networks). The similarity between eMBB and URLLC is that they both require very wide bandwidth, but the difference is 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 can support multi-antenna operation.

[0004] For systems like LTE and NR, further improvements and options may facilitate efficient operation of the communication system and specific equipment associated with the system. Summary of the invention

[0005] One non-limiting and exemplary embodiment helps provide efficient scheduling, particularly in terms of power consumption and service latency at the terminal.

[0006] In a general aspect, the technical features disclosed herein are: a user equipment, comprising: a transceiver, receiving a control signal including a first control signal and a second control signal; and a circuit: monitoring the first control signal in a first resource set; when the monitored first control signal includes an identification of the user equipment and an indicator having a first value, controlling the transceiver to receive the second control signal on a second resource set; and when the received second control signal includes bandwidth portion information for receiving a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, controlling the transceiver to receive the PDCCH and / or PDSCH on the indicated bandwidth portion.

[0007] In a general aspect, the technical features disclosed herein are: a network node, comprising: a transceiver, sending a control signal including a first control signal and a second control signal; and a circuit: sending a first control signal addressed to a user equipment in a first resource set; when the sent first control signal includes an identification of the user equipment and an indicator having a first value, controlling the transceiver to send a second control signal on a second resource set; and when the sent second control signal includes bandwidth portion information for transmission of a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, controlling the transceiver to send PDCCH and / or PDSCH on the indicated bandwidth portion.

[0008] In a general aspect, the technical features disclosed herein are: a method implemented by a user equipment, the method comprising: monitoring a first control signal in a first resource set; when the monitored first control signal includes an identification of the user equipment and an indicator having a first value, receiving a second control signal on a second resource set; and when the received second control signal includes bandwidth portion information for receiving a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, receiving the PDCCH and / or PDSCH on the indicated bandwidth portion.

[0009] In one general aspect, the technical features disclosed herein are: a method implemented by a network node, the method comprising: sending a first control signal addressed to a user equipment in a first resource set; when the sent first control signal includes an identification of the user equipment and an indicator having a first value, sending a second control signal on a second resource set; and when the sent second control signal includes bandwidth portion information for transmission of a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, sending the PDCCH and / or PDSCH on the indicated bandwidth portion.

[0010] In one general aspect, the technical features disclosed herein are: a user equipment, comprising: a transceiver, receiving and / or transmitting a signal; and a circuit, (i) monitoring a signal in a first resource set, and (ii) when the monitored signal includes an identification of the user equipment and an indicator having a first value, controlling the transceiver: receiving or transmitting a signal on a second resource set, and after a time period indicated in the monitored control signal, not receiving or transmitting a signal on the second resource set, and monitoring the control signal in the first resource set.

[0011] It should be noted that the general or specific embodiments may be implemented as a system, a method, an integrated circuit, a computer program, a storage medium, or any selective combination thereof.

[0012] Additional benefits and advantages of the disclosed embodiments can be seen from the description and drawings. These benefits and / or advantages can be obtained individually through various embodiments and features of the description and drawings, and all of these embodiments and / or advantages do not need to be provided in order to obtain one or more such benefits and / or advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the following exemplary embodiments, it is described in more detail with reference to the accompanying drawings and diagrams.

[0014] Figure 1 An exemplary architecture of a 3GPP NR system is shown, including exemplary user and control plane architectures for LTE eNB, gNB, and UE.

[0015] Figure 2 is a block diagram showing an exemplary structure of a terminal and a base station.

[0016] Figure 3 is a block diagram showing the structure of a circuit for sending and receiving a power saving signal and behaviors associated therewith.

[0017] Figure 4 is a schematic diagram showing an example of a power saving signal and its effect on scheduling a physical control channel.

[0018] Figure 5 is a schematic diagram showing another example of a power saving signal and its impact on scheduling a physical control channel.

[0019] Figure 6 is a schematic diagram showing an example of a power save signal and its effect on scheduling physical data channels.

[0020] Figure 7 is a schematic diagram showing another example of a power saving signal and its effect on scheduling physical data channels.

[0021] Figure 8is a flow chart illustrating an exemplary method for sending and receiving power save signals and actions that may be associated therewith. DETAILED DESCRIPTION

[0022] Figure 1 An exemplary example of a communication system including a base station, a terminal and a core network is shown. Such a communication system may be a 3GPP system, such as NR and / or LTE and / or UMTS. For example, Figure 1 As shown, the base station (BS) can be a gNB (e.g., NRgNB) or an eNB (e.g., LTE). However, the present invention is not limited to these 3GPP systems or any other system. Even if some terms of the 3GPP system are used to describe the embodiments and exemplary embodiments, the present disclosure is also applicable to any other communication system, especially in any cellular, wireless and / or mobile system.

[0023] The terminal is called user equipment (UE) in LTE and NR. This can be a mobile device such as a wireless phone, a smartphone, or a USB memory stick with user equipment functionality. However, the term mobile device is not limited to this, and in general, a relay can also have the functionality of such a mobile device, and a mobile device can also work as a relay.

[0024] A base station is a network node, for example, forming a part of a network, for providing services to terminals. A base station is a network node, which provides wireless access to terminals.

[0025] In LTE and NR, the radio resource control (RRC) protocol is used for configuration between base stations (eNB, gNB) and terminals (UE). RRC is a control protocol that resides on the physical layer and the MAC layer. RRC defines various states for the UE depending on the transmission / reception behavior. For example, the RRC_CONNECTED state means, among other things, that the UE has an established radio access bearer and can send and / or receive data. On the other hand, the RRC_IDLE mode means, among other things, that the UE has no configured radio access bearers, but can have established signaling radio bearers.

[0026] The present invention provides methods that can facilitate efficient power conservation in mobile terminals, particularly power conservation associated with communications between the mobile terminal and a base station.

[0027] In LTE, power utilization efficiency is improved by applying discontinuous reception (DRX). DRX is a method of shortening the active period in RRC_CONNECTED mode without scheduling authorization. Specifically, through a timer that can be configured by the eNB, the UE can operate in an active mode in which it monitors the PDCCH and in a DRX mode in which reception is turned off.

[0028] However, the DRX mechanism provides an ON duration (where PDCCH is monitored) and an OFF mode (where PDCCH is not monitored). The start time and duration of the ON time (similarly the OFF time) are configured by RRC, which means that it is not dynamic, but at most semi-static. Dynamic change refers to changes with the scheduling frequency, such as changes with scheduling authorization. Semi-static may still mean changes during the communication connection, such as by RRC, but the frequency configured by RRC is lower than the scheduling authorization. Since the PDCCH cannot be monitored during the OFF duration in DRX, the service delay may increase, which may be less efficient for certain specific services that are sensitive to delay. In other words, since the UE does not monitor the PDCCH in the OFF mode, if traffic arrives, the UE cannot be scheduled until the next ON duration. Therefore, for some services, low latency requirements may not be guaranteed. If the DRX ON duration period is configured to a short value, power consumption will increase due to increased monitoring of the PDCCH. Even in the absence of traffic at all, the UE still needs to be turned on to monitor the PDCCH, which will cause power waste. In summary, DRX does not provide a good trade-off between power saving and service delay. Instead, DRX may cause excessive waiting time when traffic arrives, and cause unnecessary power waste when no traffic arrives.

[0029] Some exemplary embodiments of the present invention may help provide more dynamic, efficient and / or UE-specific power adaptation, possibly in accordance with traffic characteristics such as traffic arrival timing and patterns.

[0030] For example, the UE may monitor control information related to power saving (e.g., PoSS) in limited resources (indicated by high-layer signaling) in the first mode; and when the UE detects the control information in the first mode, the UE changes to the second mode; when the UE does not detect the control information in the first mode, the UE remains in the first mode. The control information includes information related to the length of the second mode, and the UE returns to the first mode from the second mode based on the length of the second mode.

[0031] An example of such a mobile device 210 is Figure 2 shown. Figure 2A general, simplified and exemplary block diagram of a user equipment 210 (also referred to as a communication device) and a scheduling device 250 (here exemplarily assumed to be located in a base station (e.g., an eLTE eNB (or ng-eNB) or a gNB in ​​5G NR)) is shown. However, in general, in the case of a sidelink connection between two terminals, the scheduling device may also be a terminal. The UE and the eNB / gNB communicate with each other via a (wireless) physical channel 290 using their transceivers 220 (UE side) and 260 (base station side), respectively. The base station 250 and the terminal 210 together form a communication system 200.

[0032] The communication device 210 may include a transceiver 220 and a (processing) circuit 230. The transceiver 210 may include and / or be used as a receiver and / or a transmitter in turn. The circuit may be one or more hardware, such as one or more processors or any LSI. There are input / output points 225, 265 (or nodes) between the transceiver and the processing circuit, through which the processing circuit can control the transceiver, that is, control the receiver and / or transmitter and exchange receive / transmit data. The transceiver as a transmitter and receiver may include an RF (radio frequency) front end, including one or more antennas, amplifiers, RF modulators / demodulators, etc. The processing circuit may implement control tasks, such as controlling the transceiver to send user data and control data provided by the processing circuit, and / or receiving user data and control data further processed by the processing circuit. The processing circuit may also be responsible for performing other processing such as determining, deciding, calculating, measuring, etc. The transmitter may be responsible for performing the transmission processing and other processing related thereto. The receiver may be responsible for performing the reception processing and other processing related thereto.

[0033] According to one embodiment, the terminal corresponds to the communication device 210 and includes: a transceiver 220 that receives and / or transmits a signal; and a circuit. The circuit 230 monitors a signal in a first resource set; and when the monitored signal includes an identification of a mobile device and an indicator having a first value, controls the transceiver to: receive or transmit a signal on a second resource set, and after a time period indicated in the monitored control signal, not receive or transmit a signal on the second resource set, and monitor the control signal in the first resource set.

[0034] According to one embodiment, the network node corresponds to the communication device 250 and includes: a transceiver 260 that receives and / or sends a signal; and a circuit 270 that sends a signal in a first resource set and controls the transceiver when the monitored signal includes an identification of a mobile device and an indicator having a first value: receives or sends a signal on a second resource set, and after a time period indicated in the sent control signal, does not receive or send a signal on the second resource set and sends a control signal in the first resource set.

[0035] also, Figure 3 A more detailed structure of a mobile device and a network node such as a base station according to an exemplary embodiment is shown. Circuit 301 may be used in a terminal. It comprises a circuit 310 for PoSS detection, a circuit 320 for controlling the reception or transmission of a data channel, and a circuit 330 for switching between a first mode and a second mode (i.e., between PoSS detection performed by circuit 310 and data channel reception or transmission performed by circuit 320). Circuit 305 may be used in a base station. It comprises a circuit 350 for transmitting a PoSS to a terminal, a circuit 360 for controlling the reception or transmission of a data channel of the terminal, and a circuit 370 for switching between a first mode and a second mode of the terminal (i.e., between PoSS transmission performed by circuit 350 and data channel reception or transmission performed by circuit 360).

[0036] For ease of description, the (one or more) time periods during which the terminal monitors the first resource set may be referred to as (one or more) power saving periods, and the state of the terminal during the (one or more) time periods may be referred to as power saving mode. In addition, the (one or more) time periods indicated in the monitored control signal may be referred to as (one or more) active time periods, and the state of the terminal during the (one or more) time periods may be referred to as active mode.

[0037] In other words, according to some embodiments, the terminal can operate in two mutually exclusive modes, namely power saving mode and active mode. In power saving mode, the terminal monitors power saving signal (PoSS) but does not monitor the conventional PDCCH. In active mode, the terminal monitors the conventional PDCCH. The term "conventional" herein refers to PDCCH, such as PDCCH in LTE and Release 15 NR.

[0038] Since monitoring of the PDCCH consumes some power, by providing a mode that monitors the PoSS without monitoring the PDCCH, some power savings may be facilitated, particularly in cases where monitoring of the second resource set consumes more power than monitoring of the first resource set. 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 the PoSS is provided with fewer decoding candidates to monitor and / or if the PoSS uses a narrower bandwidth than the PDCCH. In other words, power savings may be achieved if there are fewer blind decodes.

[0039] The PoSS is located in the monitored first resource set. The first resource set may be given by one or more time slots and / or one or more symbols in the time domain and one or more physical resource blocks and / or one or more subcarriers in the frequency domain. However, the present invention is not limited thereto, and in addition to or in lieu of the above examples, the first resource set may be further defined by one or more indexes of a code (e.g., a scrambling or spreading sequence) and / or an antenna port and / or a sequence ID or a device ID. The first resource set may be defined as a periodic pattern in system resources (e.g., periodicity in the time domain and / or frequency domain). The time period and length of a signal may be specified (e.g., in the time domain and / or frequency domain). The first resource set may be predetermined, for example, fixed by a standard or depending on some transmission and / or traffic parameters. Alternatively or in addition, the first resource set may be configurable, for example, configured via signaling such as an RRC protocol.

[0040] In one example, some relative offsets from some synchronization or reference signals can be used to define the configuration of limited resources in power saving mode. Specifically, the first resource set is located at a fixed distance from the resources allocated for the synchronization signal or reference signal or a distance configured by the radio resource control protocol. For example, when looking at LTE or NR terminology, the first resource set can be configured relative to the position of (one or more) synchronization signal blocks SSB and / or (one or more) tracking reference signals TRS and / or (one or more) channel state information reference signals CSI-RS. SSB can be used to synchronize with a specific base station, TRS is used to track and also includes phase synchronization, and CSI-RS is used to measure channel quality through the terminal and provide the measured quality as feedback of the channel quality to the base station.

[0041] The distance to the synchronization signal and / or the reference signal may vary depending on the transmission and / or traffic parameters, or may be configured by signaling such as RRC signaling. Here, the traffic parameters may include traffic type and traffic parameters, such as delay sensitivity, the size of the traffic, target quality expressed in error rate, etc. Transmission parameters may include parameters such as channel quality, applied modulation and coding, power, parameter sets, etc. The above relative position does not necessarily mean that the PoSS is to be included with the offset to each SSB. The frequency of the PoSS may be equal to or less than or greater than the frequency of the SSB (and / or TRS and / or CSI-RS or any type of reference signal). The ratio between the PoSS and the frequency of the synchronization signal and / or the reference signal may be fixed or based on parameters such as traffic or transmission parameters or may be derived, and / or configured by some signaling such as RRC signaling. It is worth noting that the above examples are not exhaustive, and further configurations and parameters are also possible.

[0042] PoSS can be viewed as a signal that, when received by a terminal, causes the terminal to switch from power saving mode to active mode. This can be done in any of the following ways:

[0043] In the first example, the presence of a PoSS signal in the first resource set causes the terminal to switch from a power saving mode to an active mode. The absence of a PoSS signal in the first resource set causes the terminal to remain in the power saving mode. This example provides a very simple but efficient switching mechanism. In the presence of a PoSS signal, the first resource set may also include resources for indicating the length of the active period and possible other parameters.

[0044] In a second example, the PoSS signal is always sent in PoSS, but may take different values. A first value may indicate switching the terminal from power saving mode to active mode. A second value different from the first value may cause the terminal to remain in power saving mode.

[0045] As described above, outside the active period, in the power saving period, if the monitored control signal includes an indicator having a second value, the processing circuit may cause the receiver to continue monitoring the control signal in the first resource set without receiving or transmitting a signal on the second resource set.

[0046] The second resource set includes, for example, PDCCH resources. However, the second resource set is not necessarily limited to PDCCH resources, and it may also include some reference signal resources and / or other signaling resources different from PDCCH resources, such as paging resources.

[0047] In an exemplary embodiment, in power saving mode, the terminal monitors only the PoSS (except for the synchronization signal), but not the signaling or data. Some reference signals may not need to be monitored. Accordingly, the paging channel is not monitored either. In this exemplary embodiment, very efficient power saving can be promoted.

[0048] According to an exemplary embodiment, in active mode, the terminal does not monitor the first set of resources. Since the first resource may also define the duration of the active period after obtaining a PoSS with a value indicating a switch to active mode, there is no need to monitor the PoSS in active mode: the terminal returns to power saving mode after the active period. This approach also helps to save some power and resources in active mode.

[0049] However, the present invention is not limited to this embodiment. When the terminal is in active mode, PoSS can also be monitored in the first resource set. Alternatively, the PoSS signal can be monitored in a third resource set that is the same as or different from the second resource set but different from the first resource set. In any case, the present disclosure also provides an embodiment in which the first resource set may include PoSS but does not include an indication of the active time period. In this case, the PoSS signal in the active mode is used to switch the terminal from the active mode to the power saving mode. Note that the first value of PoSS can be used to switch from the power saving mode to the active mode, and the second value of PoSS can be used to switch from the active mode to the power saving mode again. The first value and the second value of the PoSS signal are different.

[0050] In other words, in one exemplary embodiment, when the mobile device is in the second (active) mode, the circuit monitors the control signal in the first set of resources and sets the mobile device to the first mode when the monitored control signal includes an indicator (PoSS) having a second value.

[0051] Some advantages of providing PoSS signals in power saving mode are that it can provide both shorter latency and power saving. When traffic arrives, the terminal can be scheduled in time. Since the monitoring of PoSS may consume less power, the power consumption may be lower. If there is no traffic for a long period of time, monitoring only PoSS may consume less power than performing PDCCH blind decoding during the DRX ON duration.

[0052] In an environment where DRX is applied in RRC_CONNECTED mode, the above embodiment still monitors PoSS in power saving mode, and in the DRX OFF period, the signaling channel is not monitored. In the above embodiment, the terminal can dynamically return from the power saving mode to the active mode, or the terminal can remain in the power saving mode in a short period based on PoSS. On the contrary, in DRX, the terminal cannot dynamically change from the OFF period to the ON period, but can only change from the OFF period to the ON period at a configured timing. Therefore, the communication volume adaptation capabilities of the above embodiment and the DRX method are different. Specifically, in the above embodiment, if there is no scheduled communication volume, the terminal does not have to enter the active mode, which can promote power saving. On the contrary, in the DRX method, even if there is no communication volume, the UE needs to enter the ON duration to monitor (one or more) PDCCHs in the configured period, which may result in power waste.

[0053] Note that both the first mode and the second mode can be defined in the RRC_CONNECTED state of the terminal. However, this does not limit the present disclosure, and - as shown below, embodiments in which the second mode corresponds to the RRC_CONNECTED mode are also envisioned. The present disclosure is even applicable to embodiments in which both the first and second modes (power saving and active modes) are in the RRC_IDLE mode.

[0054] Two embodiments are described below: In one embodiment, the control information obtained from the first resource set when detecting PoSS is associated with a resource candidate (such as PDCCH) for the control information to be monitored. In another embodiment, the control information includes second resource information associated with (one or more) resources or resource candidates of a data channel (such as PDSCH or PUSCH). A third embodiment also described below envisions that one or more bits are also provided in the control information, which one or more bits indicate which of the first resource information associated with the control channel or the second control information associated with the data channel is included in the control information. The one or more bits can be generated using the UE ID or RNTI.

[0055] PoSS with PDCCH opportunity

[0056] In an exemplary and non-limiting embodiment, upon receiving the PoSS, the terminal switches to active mode and upon switching begins monitoring the PDCCH to receive scheduling grants.

[0057] In other words, when setting the mobile device from the first mode to the second mode, the circuit determines a resource candidate to be monitored on a physical downlink control channel (e.g., PDCCH) to receive scheduling information (e.g., scheduling information included in the DCI) based on an indication included in the monitored control signal and / or an identification of the mobile device. Then, the circuit controls the transceiver to receive (e.g., blindly decode) a signal in the resource candidate, and based on the signal received in the resource candidate (e.g., a DCI including a downlink or uplink grant), determines a data resource for downlink or uplink data transmission. Finally, the circuit controls the transceiver to receive (downlink direction) or send (uplink direction) data on the determined (e.g., authorized) data resource.

[0058] Therefore, in this embodiment, after switching to active mode, the first resource on which the terminal will receive or send data is determined at the terminal based on PDCCH reception, like any other resource in active mode. Specifically, after switching from power saving mode to active mode, the upcoming resource candidates for data scheduling on PDCCH are determined based on the indication within PoSS follow-up information (such as CORESET information or blind decoding candidates) in the first resource set. For example, in PoSS, a limited set of CORESET and / or blind decoding candidates can be indicated to assist the terminal in receiving in the second resource set. This can save terminal power consumption when performing PDCCH blind detection. In general, the term CORESET means a control resource set, which is a resource set used for control signaling in NR.

[0059] Alternatively or additionally, the candidate may be determined based on the identity of the terminal. The determination of the blind decoding candidate 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.

[0060] The signaling information configuring the PDCCH may include an indication of the minimum and maximum aggregation levels, whether the candidate is localized or distributed, transmission parameters of the candidate, and the like.

[0061] Figure 4 The timing of power saving mode and active mode, as well as PoSS and PDCCH resources are schematically shown. Specifically, Figure 4 An "OFF period" corresponding to a power saving period is shown, in which the first resource set is monitored instead of the second resource set. At the PoSS opportunity (first resource set), PoSS is actually detected, and upon detection, the terminal transitions to an "ON period" corresponding to the above-mentioned active mode. The ON and OFF periods are divided into time slots, some of which are in an active (ON) period including PDCCH resources to be monitored by the terminal. In the OFF period, the terminal does not monitor the PDCCH.

[0062] exist Figure 4 , the arrow from the PoSS to the PDCCH blind decoding (candidate) resource shows 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 the PoSS signal offset. Here, the offset is zero, that is, the first PDCCH to be monitored is located in the time slot immediately after the time slot in which the PoSS is located. However, the present invention is not limited to such an approach, and the offset in terms of time slots and / or symbols can be non-zero.

[0063] Figure 5Another exemplary embodiment is shown, in which the PDCCH is not monitored in every time slot after switching from power saving mode to active mode. Instead, the monitoring frequency of the PDCCH can be fixed (e.g. defined in the standard), or variable. The variability can be achieved by depending on other parameters such as parameter sets that are configurable through signaling from the base station to the terminal (e.g. through RRC signaling).

[0064] Since the power saving mode can be terminated dynamically by receiving PoSS, the method of the present disclosure is more flexible than DRX. In DRX, when the OFF period ends, the UE automatically switches to the active mode, regardless of whether the UE has actual communication traffic.

[0065] In LTE and NR, Hybrid Automatic Repeat Request (HARQ) is used to correct some transmission errors. Using multi-process stop-and-wait HARQ, in order to save resources, the location of the resources used to transmit the acknowledgment (positive or negative, ACK or NACK) is implicitly determined based on the location of the resources allocated (scheduled) for the transmission of the data being acknowledged.

[0066] According to an exemplary implementation, in any of the above embodiments and examples, once the UE detects the PoSS, the UE switches to active mode and determines not only resource candidates (PDCCH) for data scheduling based on the indication accompanying the PoSS or UE ID, but also resources for HARQ confirmation. Specifically, based on the scheduled PDSCH and PUSCH resources, the HARQ feedback resources are determined, for example, based on the indication within 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 for calculating the HARQ-ACK resources.

[0067] In other words, in one exemplary embodiment, the circuit determines resources for receiving or sending transmission acknowledgments corresponding to the determined data resources based on indications included in the monitored control signals and / or identification of the mobile device.

[0068] In summary, when a UE detects PoSS in power saving mode, the UE may determine one or more of the following:

[0069] - the upcoming PDCCH resource (based on the PoSS in the first resource or an additional indication accompanying the PoSS, and / or the UE identity),

[0070] - resources used for HARQ feedback (based on the PoSS in the first resource or an additional indication accompanying the PoSS, and / or the UE identity),

[0071] - Timing information for returning from active mode to power save mode.

[0072] PoSS with data channel scheduling

[0073] In an exemplary and non-limiting embodiment, upon receiving the PoSS, the terminal switches to active mode and determines upcoming resources for data on the PUSCH and / or PDSCH based on the indication in the PoSS (or more generally, based on the indication within the first set of resources) and / or based on the terminal identity.

[0074] In other words, when setting the mobile device from the first mode to the second mode, the circuit determines data resources for downlink or uplink data transmission based on the indication included in the monitored control signal and / or the identification of the mobile device, and controls the transceiver to receive or send data on the determined data resources.

[0075] Figure 6 An example of such a process is shown. In power saving mode (OFF period), a PoSS signal is received in a first resource set, which also includes an indication of a PDSCH resource where the terminal will receive data. Thereby, the terminal switches to the ON period and receives data in the indicated PDSCH resource, which is indicated by an arrow starting in the PoSS signal and ending in a corresponding PDSCH resource in a plurality of time slots after the time slot with the PoSS signal. The first resource also indicates the timing of switching from active mode (ON period) back to power saving mode (OFF period). Therefore, as Figure 6 As shown, after the ON period, at a specified timing or time period, the terminal switches to the power saving mode again.

[0076] It is worth noting that the PoSS carrying the first resource may indicate in each PoSS the time 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, the indication may carry a timing, which is applicable to the following multiple transitions. For example, the timing is signaled only when the timing changes.

[0077] As described above, in some embodiments, the time 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 a time period or timing may be fixed or variable and predefined by the standard. Alternatively, such timing may be set by the base station or another network node via control signaling such as RRC.

[0078] Likewise, in some embodiments, the time period or timing of switching to the power saving mode when in the active mode is notified by PoSS signaling in the first resource set. Such time period or scheduling mode or timing information may have multiple options configured by RRC signaling. Among these options, PoSS indicates one of them to the UE.

[0079] exist Figure 6 In the example, the PDSCH resources are located in consecutive time slots. However, this does not limit the present disclosure. Figure 7 As shown, PDSCH resources can be periodically located in specific time slots. In general, PDSCH resources can be defined by the start and length in the time domain and / or frequency domain or the start, length and frequency in the time domain and / or frequency domain. The start can be predefined - for example, set to the next time slot after the PoSS time slot (the time slot where the PoSS signal is located) or the nth time slot after the PoSS time slot. Alternatively or additionally, time domain resources can be defined based on symbols rather than (only) based on time slots. Similarly, resources can be defined in the frequency domain.

[0080] exist Figure 6 and Figure 7 In the above example, data transmission is performed on PUSCH. However, the present disclosure is not limited thereto. Resource allocation is not necessarily for transmission on the downlink. It can be an allocation of resources for uplink, such as for PUSCH, or for both PDSCH and PUSCH.

[0081] In addition, in an exemplary embodiment, the circuit determines the resources for receiving or sending a transmission confirmation corresponding to the determined data resources based on the indication included in the monitored control signal and / or the identity of the mobile device. In other words, the resources for HARQ feedback can be set according to the PDSCH and / or PUSCH resources given by the PoSS resources. In addition, these HARQ resources can be set explicitly according to the location and / or timing of the resources in the resources of the PoSS implicitly (because the PDSCH and PUSCH are determined based on the PoSS) or by signaling. In addition, the resource location can depend on the terminal identity.

[0082] The HARQ feedback resources for uplink data transmission on the PUSCH are downlink resources, whereas the HARQ feedback resources for downlink data transmission on the PDSCH are uplink resources.

[0083] In summary, according to the above exemplary embodiments, after detection of the PoSS, the UE switches to active mode and determines the upcoming resources for data PDSCH / PUSCH based on the indication within the PoSS (or more generally the indication within the first resource set) and / or based on the identity of the terminal (such as RNTI or any ID of a sequence associated with the UE). In addition, the (one or more) resources corresponding to the PDSCH and / or PUSCH for feedback can be determined based on the indication within the PoSS and / or based on the identity of the terminal. The timing information for switching from the active mode to the power saving mode (OFF period) again can also be defined in the first resource set, and specifically defined by the PoSS signal.

[0084] It is worth noting that whenever HARQ confirmation or feedback is mentioned above, these are just non-limiting examples. The resources that can be determined based on PoSS and / or UE ID can be resources for any kind of feedback including non-hybrid ARQ, or even resources for different kinds of feedback, such as channel quality feedback based on measurements of channel conditions and / or traffic volume, etc.

[0085] Some exemplary implementations of this embodiment may provide additional advantages. For example, for DRX, when the OFF period ends, the UE automatically switches to active mode regardless of whether there is traffic to be scheduled to be sent or received by the terminal.

[0086] Choice between PoSS with PDCCH indication or data channel scheduling

[0087] After the above PoSS with PDCCH opportunity and PoSS with data channel scheduling, it should be noted that they may be but not necessarily exclusive alternatives. In this exemplary embodiment, the selection between these two methods can be performed, so that the terminal can perform both methods controlled by the base station or generally by the network node.

[0088] In other words, in this embodiment, the circuit selects, when setting the mobile device from the first mode to the second mode, based on the indication and / or the identification of the mobile device and / or based on the traffic:

[0089] - determining, based on an indication included in the monitored control signal and / or an identification of the mobile device, a resource candidate to be monitored on a physical downlink control channel for receiving scheduling information for scheduling data resources for downlink or uplink data transmission; or

[0090] - Determining data resources for downlink or uplink data transmission directly from indications included in the monitored control signals and / or from the identification of the mobile device.

[0091] Specifically, in one example, once the UE detects the PoSS, it switches from the power saving mode to the active mode. The PoSS (or the resources including the PoSS, the first resource set) also instructs the UE:

[0092] i) Continue to monitor future PDCCHs (the solution under "PoSS with PDCCH opportunities" above), or

[0093] ii) Directly receive PDSCH or send PUSCH (the solution under "PoSS with data channel scheduling" above).

[0094] The indicated behavior i) or ii) may be valid within a specific timing window. The timing window may be dynamic, for example, also indicated in the first resource set 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.

[0095] Alternatively or additionally, there are other options for selecting the described behavior i) or ii). The options for UE behavior can be selected based on different traffic arrival patterns. For example, RRC can configure these options and PoSS can select between these options. As an illustrative and non-limiting example, RRC signaling can provide several configuration candidates for different parameters, and also provide the above possible UE behaviors with corresponding indices. PoSS can indicate which behavior the terminal should follow by signaling the corresponding index.

[0096] One possible advantage of providing such options is to facilitate adaptation to traffic of different traffic characteristics. This may also accommodate situations where the arrival and scheduling of data is or is not predictable from the gNB side. If the data arrival / scheduling is predictable, the PoSS may select one of the configurations in the RRC that matches the future data arrival / scheduling pattern / profile, for example by selecting the possibility to schedule data channels (PDSCH, PUSCH) directly with the PoSS. In some embodiments, the PoSS may indicate one of the RRC configurations using parameters consistent with the traffic arrival and characteristics profile. If the data arrival / scheduling is not predictable, the PoSS may choose to just instruct the UE to monitor future PDCCHs. Predictability may be determined based on the service type: for example, two-way sessions may have similar characteristics in time. Other types of traffic may be more difficult to predict.

[0097] In any of the above embodiments and examples, the identity of the mobile device is at least one of the following: a pseudo-random sequence from an orthogonal or quasi-orthogonal sequence set, or a radio network temporary identifier RNTI. Generally, when the UE or terminal identity is mentioned above, it means any number or label or any identifier associated with the UE / terminal. For example, such an identifier can be a sequence in which the PoSS signal is scrambled or spread. Such a sequence can be a mutually orthogonal sequence or any scrambling or spreading sequence in a quasi-orthogonal sequence set. Alternatively or additionally, the identity can be an RNTI assigned to the terminal.

[0098] As described above, the present invention also provides corresponding methods, which can be performed by a terminal or a base station, specifically, by a processor embedded in the terminal or the base station. In addition, a non-transitory computer-readable medium can be provided, which stores code instructions for performing the steps of the corresponding method when executed on a computer or a processor. Such a medium can be any memory such as a hard drive, a non-volatile memory, an SSD, an optical or magnetic memory, etc.

[0099] These methods are Figure 8 As shown. The method that can be performed by the terminal may include: monitoring 810, 820 signals in a first resource set; when the monitored signal includes an identification of a mobile device and an indicator having a first value ("yes" in step 820), controlling the transceiver: receiving or sending 850 signals on a second resource set, and not receiving or sending signals on the second resource set after a time period indicated in the monitored control signal, and monitoring the control signal in the first resource set (arrow returns to step 810). As described above, after PoSS detection 820, a scheduling channel for receiving a grant may be monitored 830, 840.

[0100] Another method may be performed in a base station. This method may include the following steps: sending 860 a signal in a first resource set, the signal being addressed to a terminal (mobile device); and when the monitored signal includes an identification of the mobile device and an indicator having a first value ("yes" in step 870), controlling the transceiver to: receive or send a signal on a second resource set (890), and after a time period indicated in the sent control signal, not receive or send a signal on the second resource set, and send a control signal in the first resource set. The method may also include step 880: sending a scheduling channel (e.g., PDCCH) with authorization to the terminal to send or receive data in step 890.

[0101] Below, according to one embodiment, an exemplary interaction between a network and a terminal is described. The network can be represented by a network node such as a base station (eNB or gNB). However, other network entities may also be used. The following example is described in the context of NR and the terminology of NR is applied. However, this is for exemplary purposes only, and the present disclosure is not limited to any particular communication system.

[0102] The gNB configures parameters related to power saving and scheduling operations for a UE or a group of UEs. The configuration may be performed, for example, according to the operator's settings, and / or according to UE capabilities, traffic volume, load in the cell and / or other parts of the network, channel quality, service requirements, cell deployment scenarios, etc. The UE receives the configuration of the PoSS from the gNB. The configuration is performed by RRC signaling, such as UE-specific RRC signaling or broadcast signaling or default parameters (e.g., specified in the standard), which includes one or a combination of the following information elements:

[0103] - One or more UE IDs, or UE ID derived parameters, such as RNTI. Note that multiple IDs may generally be used to allow the UE to select behavior based on which ID is detected. The IDs and corresponding UE behavior and parameter settings may be RRC configurable, for example via UE specific signaling.

[0104] - Sequence ID for the first part of PoSS, which can be derived from the UE ID or related parameters (eg RNTI).

[0105] -The sequence may serve as a reference signal for the PoSS. In other words, the PoSS may include two parts - a reference signal part and a control channel part. For example, the PoSS may be formed as a DMRS (demodulation reference signal) and control information or as a synchronization signal and control information. The control information may be mapped onto a different time / frequency resource than the reference signal or into a dame time / frequency resource, in which case the control information may be indicated by selecting a sequence from a plurality of possible sequences. However, these are only examples and other embodiments are possible. The PoSS may be formed of a sequence alone or of a sequence other than a DMRS or SSB or any other sequence combined with the control information for other purposes.

[0106] - Time domain and frequency domain resources used by the first part and / or the second part of the PoSS. Here, the first part of the PoSS represents the reception of an instruction to perform a transition from a power saving mode to an active mode. In other words, the first part represents the part comprising the PoSS. The second part is control information, which specifies further parameters, such as the duration of the active mode, or the parameters mentioned below and above.

[0107] - The time, frequency and / or code domain resources used by the first part. This can be specified by a starting slot / symbol and timing with which the terminal must check if the PoSS is actually sent or which value it has. The UE may need to monitor the first part of the PoSS in a specific time, frequency and / or code domain resource. In this example, after the UE is able to detect the first part of the PoSS, the UE can then detect the second part of the PoSS including the control information or further control information (in the case where the first part of the PoSS also carries some information).

[0108] - Time, frequency domain resources for the second part of the PoSS (eg, PDCCH). For example, the RRC configuration may specify the search space configuration of the PDCCH to be monitored after receiving the first part.

[0109] It should be noted that the frequency domain resource configuration (for any purpose: PoSS or PDCCH or PDSCH or PUSCH sent in RRC signaling and / or within the first resource set) may include a bandwidth portion indication. The calculation of the actual resource location may be associated with the UE ID or related parameters, such as the RNTI as described above. As mentioned above, the time domain resource configuration may include parameters for periodicity and offset. In addition, the time domain resource configuration may also include a time / beam index or a PoSS index (for beam scanning use cases). In other words, the PoSS may be sent with different beam orientations and beam sequences. The beam orientation association between the PoSS index (or time index) and further PDCCH / PDSCH / PUSCH is determined by RRC signaling.

[0110] In summary, the UE receives a configuration from the base station, for example via RRC signaling, and employs the configuration to monitor the PoSS and / or PDCCH.

[0111] By detecting the PoSS, the UE determines one or a combination of the following behaviors. In other words, the PoSS may include or be accompanied by an indication of other parameters that control the UE behavior:

[0112] - Switching from a power saving mode (also called a sleep or OFF mode) to an active (also called a wake-up or ON) mode. Specifically, the first resource set may carry a timing indication of the terminal switching from the power saving mode to the active mode. In one example, the switching is dynamically indicated by a PoSS from the base station to the terminal.

[0113] - Switch from active (ON) mode to power saving mode (or sleep or OFF mode) within a specific time. Specifically, the first resource set may carry a timing indication that the terminal will switch from active mode to power saving mode. In one example, the switching is dynamically indicated by a PoSS from the base station to the terminal in the first resource set or in the second resource set.

[0114] - Triggering a transition from RRC_INACTIVE / IDLE mode to RRC_CONNECTED mode. Based on the successful detection of PoSS, a transition from RRC_INACTIVE / IDLE mode to RRC_CONNECTED mode may be triggered as described above to toggle between power saving mode and active mode.

[0115] - Triggering a transition from RRC_CONNECTED mode to RRC_INACTIVE / IDLE mode. After the above triggering from the power saving mode (first mode) to the active mode (second mode), accordingly, switching from the RRC_CONNECTED mode back to the RRC_INACTIVE / IDLE mode can be performed as described in the above embodiments to switch from the active mode back to the power saving mode. Specifically, this can be performed after a predetermined timing such as given by PoSS signaling, configured by RRC or defined by the standard. Alternatively, the switching can be performed by detecting a PoSS signal having a value indicating such switching, and so on.

[0116] - Determine the bandwidth part or parameter set (subcarrier spacing) information. This can be indicated in the PoSS (usually, in the first resource set) for receiving PDCCH and / or PDSCH or PUSCH.

[0117] - The time and frequency domain resources for detecting the future physical downlink control channel (PDCCH) are determined by the indication in the PoSS, which can be:

[0118] -PDCCH time domain and / or frequency domain resource indication. This may be a new CORESET defined specifically for PoSS.

[0119] - Time domain 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, the search space configuration or at least one or more parameters of the search space configuration.

[0120] -Determine the resources of the scheduled or configured PDSCH for one or more time slots and switch to power saving mode after decoding the transport block TB in the PDSCH resources and sending HARQ-ACK. (In LTE and NR, a transport block is defined as a data unit from the medium access control MAC layer to the physical layer for transmission within one transmission time interval (e.g., one transmission on PDSCH or PUSCH)). In other words, when the PDSCH transmission indicated by the reception of the PoSS and the corresponding PDSCH resource in the PDCCH or directly scheduled in the first resource set is terminated, the terminal can automatically switch to power saving mode again.

[0121] -Determine the resources of the PUSCH of one or more time slots (with or without grant), and after sending data in the PUSCH resources and not receiving a retransmission schedule within a certain period of time, switch to the power saving mode. In other words, when the PUSCH transmission indicated by the reception of the PoSS and the corresponding PUSCH resources in the PDCCH or directly scheduled in the first resource set is terminated, the terminal can automatically switch to the power saving mode again.

[0122] When the UE detects various parameters in the PoSS resource, it determines one or a combination of the above behaviors based on the detected RNTI type used for CRC scrambling in the detected PoSS. For example, one RNTI (first RNTI) can be reserved for indicating that after receiving the PoSS, the UE will listen to the PDCCH, while another RNTI (second RNTI) can be reserved for indicating that the UE will directly receive the PDSCH or PUSCH. The first or second RNTI can be used to scramble or spread the PoSS signal so that both RNTIs can be tried in the blind decoding of the PoSS.

[0123] Alternatively, or in addition to using RNTI for detection, 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. It should be noted that the term "behavior" here refers to any of the above parameters and settings, including not only the decision on whether to receive PDCCH or directly receive data channels after switching to active mode. In addition, the behavior may also include the configuration of the channel (search space for PDCCH, resources to be received or sent, HARQ resources, the time after which the terminal switches back to power saving mode when switching to active mode, etc.).

[0124] Additionally or alternatively, the terminal may determine one or a combination of behaviors based on the time / frequency / code resources used by the detected PoSS and / or based on an explicit indication in the detected PoSS.

[0125] According to an exemplary embodiment, the terminal determines the (QCL) quasi-colocation relationship or beam index association between the PoSS and the future received PDCCH based on the detected PoSS time / frequency / code domain resources or based on the time index (beam index) explicitly indicated in the detected PoSS. The QCL determination may be particularly relevant to embodiments of monitoring the PDCCH for allocating data channels after PoSS detection. The QCL concept is utilized in NR and can be simplified as follows: If two signals are QCL, it means that the UE can assume the same receive / transmit parameters among a large number of channel parameters, such as Doppler shift, Doppler spread, average delay, delay spread, spatial reception parameters and beam orientation. This helps to improve UE channel estimation performance.

[0126] Alternatively or additionally, the terminal determines the QCL relationship or beam index association between the PoSS and the future received PDSCH based on the detected PoSS time / frequency / code domain resources or the time index (beam index) explicitly indicated in the detected PoSS. This QCL determination may be particularly relevant to embodiments in which data is directly sent or received on the PDSCH or PUSCH after PoSS detection. In other words, the UE may assume the QCL between the detected PoSS and the future PDCCH / PDSCH / PUSCH.

[0127] For PUSCH, the terminal can determine the DL-UL beam correspondence between PoSS (in the downlink DL) and the future transmitted PUSCH (in the uplink UL) based on the detected PoSS time / frequency / code domain resources or the time index (beam index) explicitly indicated in the detected PoSS.

[0128] Alternatively or additionally, the terminal determines the DL-UL beam correspondence between the PoSS and the future transmitted PUCCH based on the detected PoSS time / frequency / code domain resources or the time index (beam index) explicitly indicated in the detected PoSS. PUCCH is a physical uplink control channel that can be used to send feedback about data transmission in the downlink, for example. PUCCH can carry, for example, confirmation (positive and / or negative) and / or channel quality measurement.

[0129] The PoSS signal can be a signal of known shape and / or power (at the receiver and transmitter, i.e., at the terminal and the base station) so that it can be used as a reference signal. For example, according to an embodiment, the terminal performs radio resource management (RRM) measurements by receiving the PoSS configured as described above. RRM functions include, for example, switching, congestion, and call admission control. Here, the PoSS can be used, for example, to determine a cell suitable for receiving and / or sending a signal. In other words, in addition to the current measured object, i.e., SSB and / or CSI-RS, RRM measurements and reports can also be based on the reception of PoSS.

[0130] As described above, in power saving mode, the terminal can start detecting the second part of PoSS (e.g., PDCCH, PUCCH, PDSCH, PUSCH) only after it detects a sequence in PoSS. The sequence can be any sequence associated with the UE, i.e., a sequence scrambled with a UE ID such as RNTI.

[0131] It is important to note that after receiving a PoSS, future UE detection of PDCCH may be performed as paging (e.g. when performed in RRC_IDLE mode: after detecting a PoSS, the UE may start monitoring for paging, or alternatively, PoSS may replace paging), where the CRC (of the PDCCH scheduling or paging message) is scrambled by a special paging RNTI, the P-RNTI (which may be UE-specific or group-specific RNTI). In other words, there is no need to monitor the PDCCH for paging before receiving a PoSS previously configured by the RRC configuration. More precisely, the paging procedure may be performed after PoSS reception.

[0132] The RNTI used to determine the terminal behavior after receiving the PoSS may be a C-RNTI, or a CS-RNTI, or an MCS-RNTI, or an SFI-RNTI, or a newly defined power-saving RNTI, which may be configured, for example, by RRC signaling as described above. As a non-limiting illustrative example: If the UE activity behavior is controlled at a general UE-specific level, the C-RNTI may be used. If the UE activity behavior reuses the current SPS (semi-persistent scheduling) configuration, the CS-RNTI may be used. The SPS configuration ID may be indicated in the PoSS. This may be UE-specific or UE group-specific. If the UE activity behavior is for a URLLC use case, the MCS-RNTI may be used, which is UE-specific. If the UE activity behavior control reuses the signaling structure of the current slot format indication (SFI), the SFI-RNTI, i.e., the UE group level, may be used.

[0133] In an exemplary embodiment, once the UE detects a PoSS whose second portion CRC is scrambled by the C-RNTI, the UE determines the PDSCH / PUSCH resource assignment based on the indication in the PoSS.

[0134] Once the UE detects a PoSS whose second part's CRC is scrambled by some new UE group RNTI or UE-specific RNTI, the UE can determine future control channel resource locations based on the indication in the PoSS (eg, the indication in its second part).

[0135] Once the UE detects a PoSS whose second part CRC is scrambled by the SFI-RNTI, the UE can determine the future timeslot format (or future resource direction) based on the indication in the PoSS.

[0136] During PoSS monitoring, the terminal therefore only needs to blindly decode the resources configured for receiving PoSS (the first resource set).The configuration possibilities are described in several examples above and may include RRC, standard defined and / or dependent on some further parameters.

[0137] The detected PoSS time / frequency / code domain resource index or the time index (beam index) that may be explicitly indicated in the detected PoSS may also be used for other purposes. For example, based on one or more of them, the UE may determine the UL power control spatial related parameters. For example, in current standards, the power control parameters include spatial or beam orientation information, which is more like an index that allows different power control parameters to be set for different beam orientations. The UE transmit power control may use this information obtained from the PoSS. However, the power control may alternatively or additionally include other parameters and may also be determined by using the PoSS.

[0138] According to a specific exemplary embodiment, once the UE detects the PoSS, the UE may follow one of the following actions depending on the detected sequence ID or index or UE ID:

[0139] -Determine PDSCH / PUSCH resource allocation based on the indication in PoSS.

[0140] - Determine future control channel resource locations (PDCCH and / or PUCCH) based on the indication in the PoSS.

[0141] - Determine the future time slot format (or future resource direction) based on the indication in the PoSS.

[0142] According to another exemplary and non-limiting implementation, once the UE detects the PoSS, the UE follows one of the following actions depending on the time / frequency / code resource location / index of the PoSS:

[0143] -Determine PDSCH / PUSCH resource allocation based on the detected time / frequency / code resources of the PoSS or an included indication.

[0144] - Determine future control channel resource locations (PDCCH and / or PUCCH) based on the detected time / frequency / code resources of the PoSS or the included indications.

[0145] - Determine the future time slot format (or future resource direction) based on the detected time / frequency / code resources of the PoSS or the included indications.

[0146] In other words, the time / frequency / code resource location / index of the PoSS determines which of the three possible actions described above is implemented after the PoSS is detected.

[0147] In summary, the PDCCH / PDSCH / PUSCH resource indication for PoSS may use some combination of input parameters, which may be UE ID, RNTI, resource index of detected PoSS, and explicit fields in PoSS PDCCH.

[0148] It may be assumed that the beam / QCL related indication or beam correspondence indication between the PoSS and the indicated upcoming PDCCH / PDSCH / PUSCH / PUCCH is, for example, fixed or configured through signaling such as RRC.

[0149] Power control related parameters, in particular the spatial information of PUSCH / PUCCH / SRS, can be derived from the detected PoSS. In other words, a sounding reference signal (SRS) configuration can be selected based on one or more PoSS parameters. Multiple SRS configurations may be possible, either provided in a standard form or defined by RRC signaling, and the PoSS parameters can select the applicable SRS configuration among them.

[0150] As described above, the mode switch from the power saving mode to the active mode is triggered by the detection of PoSS. However, PoSS may be equally applicable to the switch from the active mode to the power saving mode. Specifically, the detection of PoSS (as opposed to the absence of PoSS detection in the expected resources (the first set of resources)) may trigger the mode switch from the first mode to the second mode, or vice versa. Alternatively, PoSS may assume different values ​​- one for switching from the first mode to the second mode, and another for switching from the second mode to the first mode.

[0151] The PoSS detection process may include two steps: In the first step, sequence detection is performed to determine whether the PoSS exists or has which value. In the second step, the PDCCH configuration or the PDSCH / PUSCH configuration is detected. It has been illustrated above that both the first part and the second part of the control information are determined in this order, which may be the case when both are in the first resource. However, the present invention is not limited to this configuration, and the first resource set may also be distributed, so that the first part and the second part of the resources and the PoSS are separated in time and / or frequency and / or code domain.

[0152] PoSS can also be used for RRM measurements.

[0153] The present invention can be implemented by software, hardware or software and hardware. Each functional block (such as a circuit) used in the description of each of the above embodiments can be partially or entirely implemented by an LSI such as an integrated circuit, and each process described in each embodiment can be partially or entirely controlled by the same LSI or a combination of LSIs. LSI can be formed as a chip alone, or a chip can be formed to include some or all of the functional blocks. LSI may include data input and output coupled thereto. Depending on the degree of integration, the LSI here may be referred to as IC, system LSI, super LSI or super LSI. However, the technology for implementing integrated circuits is not limited to LSI, and can be implemented by using a dedicated circuit, a general-purpose processor or a dedicated processor. In addition, an FPGA (field programmable gate array) or a reconfigurable processor that can be programmed after LSI manufacturing can be used, wherein the connection and setting of the circuit unit arranged inside the LSI can be reconfigured. The present invention can be implemented as digital processing or analog processing. If future integrated circuit technology replaces large-scale integrated circuits due to the advancement of semiconductor technology or other derivative technologies, future integrated circuit technology can be used to integrate functional blocks. Biotechnology can also be applied.

[0154] In addition, various embodiments may also be implemented by software modules executed by a processor or directly in hardware. It may also be a combination of software modules and hardware implementations. The software modules may be stored on any type of computer-readable storage medium, such as RAM, EPROM, EEPROM, flash memory, registers, hard disk, CD-ROM, DVD, etc. It should also be noted that the various features of different embodiments may be combined individually or arbitrarily in another embodiment.

[0155] It will be appreciated by those skilled in the art that many changes and / or modifications may be made to the present invention as shown in the specific embodiments. Therefore, the present embodiments are considered to be illustrative and not restrictive in all aspects.

[0156] In summary, a mobile device is provided, comprising: a transceiver, receiving and / or sending a signal; a circuit: monitoring a signal in a first resource set, and, when the monitored signal includes an identification of the mobile device and an indicator having a first value, controlling the transceiver: receiving or sending a signal on a second resource set, and after a time period indicated in the monitored control signal, not receiving or sending a signal on the second resource set, and monitoring the control signal in the first resource set.

[0157] For example, outside of the time period, when the monitored control signal includes the indicator having the second value, the control signal continues to be monitored in the first set of resources, and no signal is received or sent on the second set of resources.

[0158] The first set of resources may be located at a fixed distance allocated for synchronization signals and reference signals or at a distance configured by a radio resource control protocol.

[0159] Furthermore, in one embodiment, the circuitry does not monitor the first set of resources for control signals during the time period.

[0160] In one example, the mobile terminal is referred to as being in the first mode outside of the time period and in the second mode during the time period, and when the mobile device is in the second mode, the circuit monitors the control signal in the first resource set and sets the mobile device to the first mode after the power saving period when the monitored control signal includes an indicator having a second value.

[0161] Specifically, the mobile terminal is said to be in the first mode outside the time period and in the second mode within the time period, and when the mobile device is set from the first mode to the second mode, the circuit: determines resource candidates to be monitored on the 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, controls the transceiver to receive signals in the resource candidates, determines data resources for downlink or uplink data transmission based on the received signals in the resource candidates, and controls the transceiver to receive or send data on the determined data resources.

[0162] According to one embodiment, the mobile terminal is referred to as being in the first mode outside the time period and in the second mode within the time period, and when the mobile device is set from the first mode to the second mode, the circuit: determines 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, and controls the transceiver to receive or send data on the determined data resources.

[0163] Furthermore, in some examples, the circuitry determines resources for receiving or sending a transmission acknowledgment corresponding to the determined data resources based on an indication included in the monitored control signal and / or an identification of the mobile device.

[0164] Specifically, the mobile terminal is said to be in the first mode outside the time period and in the second mode within the time period, and the circuit selects, based on the identification of the mobile device and / or based on the communication volume, when setting the mobile device from the first mode to the second mode: whether to determine, based on an indication included in the monitored control signal and / or an identification of the mobile device, resource candidates for receiving scheduling information to be monitored on the physical downlink control channel, the scheduling information being used to schedule data resources for downlink or uplink data transmission; or to directly determine, based on an indication included in the monitored control signal and / or an identification of the mobile device, data resources for downlink or uplink data transmission.

[0165] Furthermore, in some exemplary embodiments, the identity of the mobile device is at least one of: a pseudo-random sequence from a set of orthogonal or quasi-orthogonal sequences or a Radio Network Temporary Identifier (RNTI).

[0166] In some embodiments, the circuitry determines a QCL relationship or beam index association between the monitored control signal and a data channel in the second resource set based on a time, frequency, or code resource of the detected control signal.

[0167] For example, monitoring of the first resource set may include fewer blind decodings than monitoring of the second resource set. In this way, monitoring of the PoSS may be more power efficient.

[0168] According to another aspect, a network node is provided, comprising: a transceiver, receiving and / or sending a signal; a circuit: sending a signal for a mobile device in a first resource set, when the sent signal includes an identification of the mobile device and an indicator having a first value, controlling the transceiver: receiving or sending a signal for the mobile device on a second resource set, and after a time period indicated in the sent control signal, not receiving or sending a signal on the second resource set, and sending a control signal for the mobile device in the first resource set.

[0169] For example, outside of the time period, when the transmitted control signal includes the indicator having the second value, the control signal continues to be transmitted in the first set of resources, and signals are not received or transmitted (for the particular mobile device) on the second set of resources.

[0170] The first set of resources may be located at a fixed distance or a distance configured by a radio control protocol from resources allocated for synchronization signals or reference signals.

[0171] Furthermore, in one embodiment, the circuitry does not transmit a control signal for a given mobile device in the first set of resources during the time period.

[0172] In one example, the mobile device is referred to as being in the first mode outside the time period and in the second mode during the time period, and when the mobile device is in the second mode, the circuitry of the network node sends a control signal in the first set of resources, and when the sent control signal includes an indicator having a second value, the mobile device is considered to be in the first mode after the power saving period.

[0173] In another example, when setting a mobile device from a first mode to a second mode, the circuit: determines resource candidates to be monitored on a physical downlink control channel for receiving scheduling information, and includes a corresponding indication in a transmitted control signal and / or includes an identifier of the mobile device, controls a transceiver to send a signal in the resource candidate, determines (sets) data resources for downlink or uplink data transmission based on the signal sent in the resource candidate, and controls the transceiver to receive or send data on the determined data resource.

[0174] According to one embodiment, when setting a mobile device from a first mode to a second mode, the circuit: determines (sets) data resources for downlink or uplink data transmission, and includes corresponding indications in the transmitted control signal and / or includes an identifier of the mobile device, and controls the transceiver to receive or send data on the determined data resources.

[0175] Furthermore, in some examples, the circuit determines (sets) resources for receiving or sending a transmission confirmation corresponding to the determined data resources based on an indication included in the transmitted control signal and / or an identification of the mobile device.

[0176] Specifically, in one example, the circuit selects, based on the identification of the mobile device and / or based on the communication volume, when setting the mobile device from the first mode to the second mode: whether to determine resource candidates for scheduling information to be sent to the mobile device on the physical downlink control channel according to an indication included in the monitored control signal and / or an identification of the mobile device, wherein the scheduling information is used to schedule data resources for downlink or uplink data transmission; or to directly determine (set) data resources for downlink or uplink data transmission according to an indication included in the sent control signal and / or an identification of the mobile device.

[0177] Furthermore, in some exemplary embodiments, the identity of the mobile device is at least one of: a pseudo-random sequence from a set of orthogonal or quasi-orthogonal sequences or a Radio Network Temporary Identifier (RNTI).

[0178] In some embodiments, the circuitry determines a QCL relationship or beam index association between the monitored control signal and a data channel in the second resource set based on a time, frequency, or code resource of the detected control signal.

[0179] For example, monitoring of the first resource set may include fewer blind decodings than monitoring of the second resource set. In this way, monitoring of the PoSS may be more power efficient.

[0180] A method corresponding to the steps performed by the above-mentioned apparatus is also provided. For example, a method is provided, including: monitoring a signal in a first resource set, and when the monitored signal includes an identification of a mobile device and an indicator having a first value, controlling a transceiver to: receive or send a signal on a second resource set, and, after a time period indicated in the monitored control signal, not receive or send a signal on the second resource set, and monitoring the control signal in the first resource set.

[0181] In addition, a method is provided, comprising the steps of: sending a signal in a first resource set, and when the monitored signal includes an identification of a mobile device and an indicator having a first value, controlling a transceiver to: receive or send a signal on a second resource set, and, after a time period indicated in the sent control signal, not receive or send a signal on the second resource set, and sending a control signal in the first resource set.

Claims

1. A user equipment, comprising: A transceiver, receiving a control signal including a first control signal and a second control signal; and Circuit: monitoring the first control signal in a first set of resources; When the monitored first control signal includes an identification of a user equipment and an indicator having a first value, controlling the transceiver to receive the second control signal on a second resource set; and When the received second control signal includes bandwidth part information for receiving a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, the transceiver is controlled to receive the PDCCH and / or PDSCH on the indicated bandwidth part.

2. The user equipment according to claim 1, wherein: When the monitored first control signal includes an indicator having a second value, the circuitry continues to monitor the first control signal in the first set of resources and does not receive the second control signal on the second set of resources.

3. The user equipment according to claim 1, wherein: The first set of resources is located in a fixed distance or a distance configured by a radio resource control protocol from resources allocated for synchronization signals or reference signals.

4. The user equipment according to claim 1, wherein: The circuit does not monitor the first control signal in the first set of resources for a defined time period.

5. The user equipment according to claim 1, wherein The user equipment is said to be in the first mode outside of a defined time period and in the second mode during a defined time period, and The circuit monitors the first control signal in the first set of resources when the user equipment is in the second mode, and sets the user equipment to the first mode after a power saving period when the monitored first control signal includes an indicator having a second value.

6. The user equipment according to claim 1, wherein The user equipment is said to be in the first mode outside of a defined time period and in the second mode during a defined time period, and When the circuit sets the user equipment from the first mode to the second mode: Determine, based on the indication included in the monitored first control signal and / or the identity of the user equipment, a resource candidate to be monitored on the PDCCH for receiving scheduling information; controlling the transceiver to receive the first control signal in the candidate resources; determining, based on the first control signal received in the candidate resource, a data resource for downlink or uplink data transmission; as well as The transceiver is controlled to receive or send data on the determined data resource.

7. The user equipment according to claim 1, wherein The user equipment is said to be in the first mode outside of a defined time period and in the second mode during a defined time period, and When the circuit sets the user equipment from the first mode to the second mode: Determine data resources for downlink or uplink data transmission based on the indication included in the monitored first control signal and / or the identity of the user equipment; and The transceiver is controlled to receive or send data on the determined data resource.

8. The user equipment according to claim 6, wherein: The circuit determines resources for receiving or sending a transmission confirmation corresponding to the determined data resources based on the indication included in the monitored first control signal and / or the identification of the user equipment.

9. The user equipment according to claim 1, wherein The user equipment is said to be in the first mode outside of a defined time period and in the second mode during a defined time period, and The circuit selects, based on the identification of the user equipment and / or based on the traffic, when setting the user equipment from the first mode to the second mode: determining, according to an indication included in the monitored first control signal and / or an identifier of the user equipment, a resource candidate to be monitored on the PDCCH for receiving scheduling information, the scheduling information scheduling data resources for downlink or uplink data transmission; or Data resources for downlink or uplink data transmission are directly determined according to the indication included in the monitored first control signal and / or the identity of the user equipment.

10. The user equipment according to claim 1, wherein: The identifier of the user equipment is at least one of the following: a pseudo-random sequence from a set of orthogonal or quasi-orthogonal sequences; or Radio Network Temporary Identifier, RNTI.

11. The user equipment according to claim 1, wherein: The circuit determines a QCL relationship or a beam index association between the monitored first control signal and a data channel in a second set of resources based on a time, frequency, or code resource of the monitored first control signal.

12. The user equipment according to claim 1, wherein: Monitoring of the first set of resources includes fewer blind decodes than monitoring of the second set of resources.

13. A network node, comprising: A transceiver, transmitting a control signal including a first control signal and a second control signal; and Circuit: sending a first control signal addressed to a user equipment in a first resource set; When the transmitted first control signal includes the identifier of the user equipment and the indicator having the first value, controlling the transceiver to transmit a second control signal on a second resource set; and When the transmitted second control signal includes bandwidth part information for transmission of a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, the transceiver is controlled to transmit the PDCCH and / or PDSCH on the indicated bandwidth part.

14. A method implemented by a user equipment, the method comprising: monitoring a first control signal in a first set of resources; When the monitored first control signal includes the identification of the user equipment and the indicator having a first value, receiving a second control signal on a second resource set; as well as When the received second control signal includes bandwidth part information for receiving a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, the PDCCH and / or PDSCH are received on the indicated bandwidth part.

15. A method implemented by a network node, the method comprising: sending a first control signal addressed to a user equipment in a first resource set; When the transmitted first control signal includes the identifier of the user equipment and the indicator having the first value, transmitting a second control signal on the second resource set; as well as When the transmitted second control signal includes bandwidth part information for transmission of a physical downlink control channel PDCCH and / or a physical downlink shared channel PDSCH, the PDCCH and / or PDSCH are transmitted on the indicated bandwidth part.

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