CN108632973B - Method and apparatus for controlling power in a communication system - Google Patents
Method and apparatus for controlling power in a communication system Download PDFInfo
- Publication number
- CN108632973B CN108632973B CN201710184197.2A CN201710184197A CN108632973B CN 108632973 B CN108632973 B CN 108632973B CN 201710184197 A CN201710184197 A CN 201710184197A CN 108632973 B CN108632973 B CN 108632973B
- Authority
- CN
- China
- Prior art keywords
- terminal device
- path loss
- information
- message
- determining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/46—TPC being performed in particular situations in multi hop networks, e.g. wireless relay networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Embodiments of the present disclosure relate to methods and apparatus for controlling power in a communication system. For example, a method comprises: determining, at a first terminal device, a path loss between the first terminal device and a network device serving the first terminal device, the network device and a second terminal device adjacent to the first terminal device being comprised in a communication system, the second terminal device being connected to the first terminal device and communicating with the network device via the first terminal device; generating first information related to the path loss based on the determined path loss; including at least the first information in a message relating to the second terminal device; and transmitting a message to the second terminal device to cause the second terminal device to determine a first transmit power for the second terminal device based at least on the message. The embodiment of the disclosure also provides communication equipment capable of realizing the method.
Description
Technical Field
Embodiments of the present disclosure relate generally to communication systems, and in particular, to methods and apparatus for controlling power in a communication system.
Background
In a communication system, such as long term evolution-advanced (LTE-a) established by 3GPP, data forwarding via a relay terminal device can be implemented between a remote terminal device and a network device. This is particularly significant for low cost devices (e.g., machine type communication devices and wearable devices) because the power consumption for data transmission of low cost devices (i.e., remote terminal devices) can be reduced by data forwarding with relay-capable terminal devices.
Side link transmissions between the remote terminal device and the relay terminal device may co-channel with cellular transmissions. For example, the sidelink transmission may use a portion of the uplink resources of the cellular system. In this case, potential interference to the cellular system (e.g., in-band transmit interference) needs to be minimized. To this end, it is often necessary to control the transmit power of the side-link transmitter by periodically measuring and/or estimating the path loss to the network device. However, periodic measurements and/or estimations of the path loss between the terminal device and the network device will result in increased power consumption. This is particularly disadvantageous for low cost devices.
Disclosure of Invention
The following presents a simplified summary of various embodiments in order to provide a basic understanding of some aspects of various embodiments. Note that this summary is not intended to identify key elements or to delineate the scope of the various embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.
In a first aspect of the present disclosure, a method for controlling power in a communication system is provided. The method comprises the following steps: determining, at a first terminal device, a path loss between the first terminal device and a network device serving the first terminal device, the network device and a second terminal device adjacent to the first terminal device being comprised in a communication system, the second terminal device being connected to the first terminal device and communicating with the network device via the first terminal device; generating first information related to the path loss based on the determined path loss; including at least the first information in a message relating to the second terminal device; and transmitting a message to the second terminal device to cause the second terminal device to determine a first transmit power for the second terminal device based at least on the message.
In a second aspect of the present disclosure, a method for controlling power in a communication system is provided. The method comprises the following steps: receiving, at a second terminal device, a message from a first terminal device adjacent to the second terminal device, the first terminal device, a network device serving the first terminal device, and the second terminal device being included in a communication system, the second terminal device being connected to the first terminal device and communicating with the network device via the first terminal device; acquiring first information related to path loss generated by the first terminal device from the message; and determining a first transmit power for the second terminal device based at least on the first information.
In a third aspect of the disclosure, a communication device is provided. The communication device includes: a processor, and a memory storing instructions that, when executed by the processor, cause the communication device to: determining a path loss between the communication device and a network device serving the communication device, the network device and a terminal device adjacent to the communication device being comprised in a communication system, the terminal device being connected to the communication device and communicating with the network device via the communication device; generating first information related to the path loss based on the determined path loss; including at least the first information in a message relating to the terminal device; and transmitting a message to the terminal device to cause the terminal device to determine a first transmit power for the terminal device based at least on the message.
In a fourth aspect of the present disclosure, a communication device is provided. The communication device includes: a processor, and a memory storing instructions that, when executed by the processor, cause the communication device to: receiving a message from a terminal device adjacent to the communication device, the terminal device, a network device serving the terminal device, and the communication device being included in a communication system, the communication device being connected to the terminal device and communicating with the network device via the terminal device; acquiring first information related to path loss generated by a terminal device from a message; and determining a first transmit power for the communication device based at least on the first information.
As will be understood from the following description, embodiments of the present disclosure can reduce power consumption of a remote terminal device by relaying data forwarding of the terminal device. According to embodiments of the present disclosure, only the relay terminal device needs to measure and/or estimate its path loss to the network device, and under appropriate conditions, the relay terminal device is able to transmit path loss information to the remote terminal device connected thereto for respective power control, thereby avoiding potential in-band interference to the network device. Since the remote terminal device is prevented from measuring the downlink path loss, the power consumption of the remote terminal device (especially a low-cost device) can be reduced.
It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The objects, advantages and other features of the present invention will become more fully apparent from the following disclosure and appended claims. A non-limiting description of the preferred embodiments is given herein, by way of example only, with reference to the accompanying drawings, in which:
fig. 1 illustrates a schematic diagram of an example communication system 100 in which methods of embodiments of the present disclosure can be implemented;
fig. 2 shows a flow diagram of a method 200 for controlling power in a communication system according to an embodiment of the present disclosure;
fig. 3 shows a flow diagram of a method 300 for controlling power in a communication system according to an embodiment of the present disclosure;
fig. 4 shows a schematic diagram of an exemplary scenario of a communication system 100 according to an embodiment of the present disclosure;
fig. 5 shows a flow diagram of a method 500 for determining transmit power based on lateral path loss according to an embodiment of the present disclosure;
fig. 6 shows a schematic diagram of another exemplary scenario of a communication system 100 according to an embodiment of the present disclosure;
fig. 7 shows a flow diagram of a method 700 for determining transmit power based on lateral path loss and cell downlink path loss according to an embodiment of the disclosure;
fig. 8 illustrates a block diagram of an apparatus 800 according to certain embodiments of the present disclosure;
fig. 9 illustrates a block diagram of an apparatus 900 according to certain embodiments of the present disclosure; and
fig. 10 shows a block diagram of a communication device 1000 according to an embodiment of the present disclosure.
Like or corresponding reference characters designate like or corresponding parts throughout the several views.
Detailed Description
In the following description, numerous details are set forth for the purpose of explanation. However, one of ordinary skill in the art will realize that the invention may be practiced without the use of these specific details. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features described herein.
It will be understood that the terms "first," "second," and the like, are used merely to distinguish one element from another. And in fact, a first element can also be referred to as a second element and vice versa. It will be further understood that the terms "comprises" and "comprising," when used in this specification, specify the presence of stated features, elements, functions, or components, but do not preclude the presence or addition of one or more other features, elements, functions, or components.
For ease of explanation, some embodiments of the present invention are described herein in the context of wireless communications, such as cellular communications, and using terms such as long term evolution/long term evolution-advanced (LTE/LTE-a) or 5G as specified by the 3 GPP. However, as will be appreciated by those skilled in the art, embodiments of the present invention are by no means limited to wireless communication systems that follow the wireless communication protocols established by the 3GPP, but may be applied to any communication system in which similar problems exist, such as WLANs, wired communication systems, or other communication systems developed in the future, and so on.
Likewise, a terminal device in the present disclosure may be a user device (terminal device), and may also be any terminal having a wired or wireless communication function, including but not limited to a cell phone, a computer, a personal digital assistant, a game machine, a wearable device, a vehicle-mounted communication device, a Machine Type Communication (MTC) device, a device-to-device (D2D) communication device, a sensor, and the like. The term terminal device can be used interchangeably with terminal device, mobile station, subscriber station, mobile terminal, user terminal, or wireless device. In addition, the network device may be a network Node, such as a Node B (or NB), a Base Transceiver Station (BTS), a Base Station (BS), or a base station subsystem (BSs), a relay, a remote radio head (RRF), AN Access Node (AN), AN Access Point (AP), and so on.
Fig. 1 shows a schematic diagram of an example communication system 100 in which methods of embodiments of the present disclosure can be implemented. Communication system 100 may include a network device 101. For example, in the communication system 100, the network device 101 may be embodied as a base station, such as an evolved node B (eNodeB or eNB). It should be understood that the network device 101 may also be embodied in other forms, such as a node B, a Base Transceiver Station (BTS), a Base Station (BS), or a base station subsystem (BSs), a repeater, etc. Network device 101 may provide wireless connectivity for terminal devices 111 (e.g., handsets) that are within its coverage area. For example, terminal device 111 may communicate with network device 101 via wireless transmission channel 131.
There may be a plurality of terminal devices 121 and 122 (e.g., MTC or wearable devices) around terminal device 111. The plurality of terminal devices 121 and 122 may communicate with the terminal device 111 via wireless transmission channels 141 and 142, respectively. Terminal device 111 may act as a relay between a plurality of terminal devices 121 and 122 and network device 101. That is, the communication between the plurality of terminal devices 121 and 122 and the network device 101 may be achieved by forwarding the data packets between the plurality of terminal devices 121 and 122 and the network device 101 by using the terminal device 111. Since the plurality of terminal devices 121 and 122 are typically proximate to the terminal device 111 (e.g., the plurality of wearable devices are located near a cell phone), the terminal device 111 and the plurality of terminal devices 121 and 122 proximate thereto may form a cluster 151. The cluster 151 typically has a small range (relative to the distance of the terminal device to the network device), for example a few meters. In the description herein, the cluster 151 is also referred to as a "relay cluster", the terminal device 111 is also referred to as a "relay terminal device" or a "first terminal device", and the terminal device 121 and 122 are also referred to as a "remote terminal device" or a "second terminal device".
Due to the distributed nature of relay cluster 151 (e.g., the distance between terminal device 121 and 122 and terminal device 111 is much smaller than the distance between terminal device 121 and 122 and/or terminal device 111 to network device 101), terminal device 121 and 122 may approximate the path loss between terminal device 111 and network device 101 as determined by terminal device 111 to the path loss between themselves and network device 101 and then use it for open loop power control. In this way, in the relay cluster 151, only the relay terminal device 111 has to measure and/or estimate the path loss to the network device 101, and then transmit the resulting value of the path loss to the remote terminal device 121 and 122 in a broadcast or multicast manner, thereby avoiding the measurement and/or estimation of the respective path loss by each of the remote terminal devices 121 and 122.
An example method according to an embodiment of the present disclosure is now described with reference to fig. 2-7. For ease of discussion, the description of fig. 2-7 will be developed with reference to the communication system 100 shown in fig. 1. Furthermore, for the sake of simplicity only, the sidelink defined in LTE release 12 will be taken as a baseline in the following description, and it is assumed that there is a traffic session forwarded by relay terminal device 111 in layer 2 between remote terminal device 121 and network device 101 (therefore, both the remote terminal device and the relay terminal device are in RRC _ CONNECTED state), and a sidelink connection has been established between relay terminal device 111 and remote terminal device 121 and 122. It should be understood, however, that the above assumptions should not constitute any limitation on the scope of the present disclosure.
Fig. 2 shows a flow diagram of a method 200 according to an embodiment of the present disclosure. The method 200 may be implemented by a communication device acting as a relay terminal device in a communication system. The communication device may be, for example, terminal device 111 in fig. 1. For convenience of description, the method 200 is described below in conjunction with the relay terminal device 111 and the remote terminal device 121 in fig. 1. It should be understood that method 200 may also include additional steps not shown and/or may omit steps shown, as the scope of the present disclosure is not limited in this respect.
As shown in fig. 2, at block 210, terminal device 111 determines a path loss between terminal device 111 and network device 101. In some embodiments, terminal device 111 may measure and/or estimate its path loss to network device 101. For example, terminal device 111 may measure Reference Signal Received Power (RSRP) in response to receiving a reference signal from network device 101. Terminal device 111 may also obtain information related to the transmit power of network device 101. Terminal device 111 may then estimate the path loss to network device 101 based on the RSRP and the acquired information. Furthermore, in order to remove fluctuations caused by small-scale fast fading, terminal apparatus 111 may appropriately filter the resulting value of the path loss.
At block 220, terminal device 111 generates first information relating to the path loss based on the determined path loss. In some embodiments, terminal device 111 may quantize the determined value of the path loss to generate the first information. Alternatively, in some embodiments, terminal device 111 may include an indication relating to path loss in the first information. For example, table 1 shows an example of first information related to path loss. In table 1, the first information related to the path loss is represented as an 8-bit binary code. Wherein '00000000' may indicate that the remote terminal device may ignore its impact on the network device when determining its transmit power. That is, the remote terminal device may not take into account the path loss to the network device when determining its transmit power. ' 00000001 ' — 11111110 ' is used to represent a quantized value of the path loss determined by the relay terminal device, which may indicate to the remote terminal device to use the value as the path loss between it and the network device when determining its transmit power. '11111111' may instruct the remote terminal device to determine its own path loss with the network device. It should be appreciated that other ways than the above example may also be utilized to generate the first information relating to path loss, and the scope of the present disclosure is not limited in this respect.
| First information relating to path loss | Indication for remote terminal device |
| 00000000 | Ignoring its impact on network devices |
| 00000001—11111110 | Quantized values of path loss |
| 11111111 | Self-determining path loss with a network device |
TABLE 1
At block 230, terminal device 111 includes at least the first information in a message related to a second terminal device (e.g., remote terminal device 121).
In some embodiments, the message may include a sidelink discovery message for enabling a remote terminal device (e.g., remote terminal device 121) to detect and discover a relay terminal device (e.g., relay terminal device 111). Alternatively, in some embodiments, the sidelink message may also comprise a message for direct communication between the remote terminal device and the relay terminal device. Hereinafter, the side link discovery message will be described in further detail by way of example.
In some embodiments, the sidelink discovery message may be a message sent by the relay terminal device 111 in a sidelink discovery channel (e.g., a Physical Downlink Shared Channel (PDSCH) defined in the sidelink of LTE). According to the LTE sidelink definition, the contents of the sidelink discovery message are determined by the higher ProSe protocol layer in the protocol stack. Thus, the first information generated by terminal device 111 based on the value of the path loss estimated at the physical layer may be passed to higher layers in the protocol stack of terminal device 111 to include the first information in the sidelink discovery message.
In some embodiments, the first information may be included in the sidelink message based on a discovery pattern used. For example, as specified in LTE release 12, depending on the DISCOVERY mode used, the lateral link DISCOVERY message may be a PC5_ discover message for terminal device to network device relay DISCOVERY announcement (mode a) or a PC5_ discover message for terminal device to network device relay DISCOVERY response (mode B). Further, an information element used in the sidelink discovery message for communicating the first information related to the path loss may be, for example, a "Status Indicator" or a "Sparse".
In some embodiments, terminal device 111 may generate second information related to transmit power for transmitting the sidelink message in addition to the first information related to path loss and include the second information in a sidelink discovery message to communicate to a remote terminal device. The remote terminal device may utilize the second information to estimate path loss on the lateral link, as will be described further below.
At block 240, terminal device 111 transmits a message to a second terminal device (e.g., remote terminal device 121) to cause the second terminal device to determine a transmit power for the second terminal device based at least on the message. In some embodiments, the relay terminal device 111 may periodically transmit the sidelink discovery message in a sidelink discovery channel. Furthermore, the relay end device 111 may transmit the sidelink discovery message to all remote end devices in the relay cluster 151 (i.e., the end device 121 and 122) in a broadcast or multicast manner. Remote terminal device 121-122 may perform open loop power control based on the detected sidelink discovery message.
Fig. 3 shows a flow diagram of a method 300 according to an embodiment of the present disclosure. The method 300 may be implemented by a communication device acting as a remote terminal device in a communication system. For example, the communication device may be terminal device 121 and/or 122 in fig. 1. For ease of description, the method 300 is described below in conjunction with the remote terminal device 121 of fig. 1. It should be understood that method 200 may also include additional steps not shown and/or may omit steps shown, as the scope of the present disclosure is not limited in this respect.
In block 310, terminal device 121 receives a message from terminal device 111 that is proximate to terminal device 121. In some embodiments, terminal device 121 may periodically receive messages from terminal device 111. For example, the message may be a sidelink discovery message sent by the relay terminal device 111 to enable the remote terminal device 121 to detect and discover the relay terminal device 111. The message may include first information relating to the path loss generated by the relay terminal device 111 and second information relating to the transmission power used for transmitting the message.
At block 320, terminal device 121 may obtain, from the message, first information related to path loss generated by terminal device 111 and second information related to transmit power used to transmit the message.
In some embodiments, the first information may indicate that terminal device 121 may ignore its impact on network device 101 when determining its transmit power. Alternatively, in some embodiments, the first information may represent a quantized value of the path loss determined by terminal device 111, which may indicate to terminal device 121 to use that value as the path loss between it and the network device when determining its transmit power. Alternatively, in some embodiments, the first information may instruct terminal device 121 to determine its path loss with network device 101 by itself.
At block 330, terminal device 121 may determine a first path loss (hereinafter also referred to as a "lateral path loss") between terminal device 121 and terminal device 111 based at least on the second information. In some embodiments, terminal device 121 may measure a side link RSRP (SD-RSRP) in response to receiving a reference signal from terminal device 111. Then, the terminal device 121 may estimate the lateral path loss based on the SD-RSRP and the acquired second information. Furthermore, in order to remove fluctuations caused by small-scale fast fading, the terminal device 121 may appropriately filter the resulting value of the lateral path loss.
At block 340, the terminal device 121 determines a transmit power for transmitting the data packet based on at least the first information and the determined first path loss. In some embodiments, terminal device 121 may perform different operations for open loop power control to determine transmit power for transmitting data packets depending on different scenarios of communication system 100.
For example, fig. 4 shows a schematic diagram of an exemplary scenario of a communication system 100 according to an embodiment of the present disclosure. Only the network device 101, the relay terminal device 111, and the remote terminal device 121 in the communication system 100 are shown in fig. 4, and other devices other than these are omitted. It should be understood that this is done for ease of illustration only and is not intended to imply any limitation on the scope of the disclosure.
As shown in fig. 4, the relay terminal device 111 and the remote terminal device 121 connected thereto are located at the cell edge, and the traffic session between the remote terminal device 121 and the network device 101 is still relayed by the relay terminal device 111. In this case, relay terminal device 111 knows that the relay cluster is located at the cell edge from its measured information (e.g., RSRP or path loss to network device 101), and thus sets the first information related to path loss in the message related to remote terminal device 121 (e.g., discovery advertisement/response message) to all zeros (e.g., '00000000' in table 1), which instructs remote terminal device 121 to ignore potential interference to the serving cell in its transmission power control. On the remote terminal device 121 side, once the message is acquired, it can determine its transmit power based only on the lateral path loss.
For the scenario illustrated in fig. 4, fig. 5 illustrates a flow diagram of a method 500 for determining transmit power based on lateral path loss in accordance with an embodiment of the present disclosure. In some embodiments, for example, method 500 may be implemented as a method for implementing block 340 in method 300 and performed by remote terminal device 121. It should be understood that method 500 may also include additional steps not shown and/or may omit steps shown, as the scope of the present disclosure is not limited in this respect.
At block 510, terminal device 121 obtains priority configuration information relating to data packets to be transmitted by terminal device 121. In some embodiments, the Priority configuration may be, for example, a ProSe Per Packet Priority (PPPP) parameter related to quality of service (QoS) of the service in LTE release 13/14. For example, the terminal device 121 may acquire PPPP parameters related to each data packet to be transmitted from the system.
At block 520, terminal device 121 determines a first target receive power and a maximum transmit power for transmitting data packets based on the priority configuration information. In some embodiments, terminal device 121 may select the maximum transmit power for the data packet from a plurality of preconfigured maximum transmit powers according to the priority or QoS requirements of the data packet. Furthermore, terminal device 121 may also determine a first target receive power based on the priority configuration information, which may indicate a target receive power for receiving the data packet at the sidelink receiver (i.e., terminal device 111). In some embodiments, terminal device 121 may also determine the first target receive power and/or the maximum transmit power for transmitting the data packet in other manners. For example, in some cases, the first target received power and/or the maximum transmit power for transmitting the data packet may also be independent of the PPPP parameters.
At block 530, terminal device 121 determines a transmit power for transmitting the data packet based on at least the first path loss, the first target receive power, and the maximum transmit power. In some embodiments, for the scenario shown in fig. 4, when relay terminal device 121 is far away from network device 101, remote terminal device 121 is also far away from network device 101, so terminal device 121 may ignore potential interference to network device 101 when determining its transmit power. In this case, terminal device 121 may determine transmission power P for transmitting a data packet as followsremoteUE：
Wherein, PmaxRepresents the maximum transmit power of terminal device 121, which may be based on the data packet, as described aboveIs determined or otherwise determined. M denotes a transmission bandwidth in units of Physical Resource Blocks (PRBs). Parameter P0,SLA first target received power is indicated, which is a target received power parameter per PRB in dBm, indicating a target received power at which the data packet is received at the sidelink receiver (i.e., terminal device 111). Parameter PLSLRepresenting the first path loss (in terms of lateral path loss) determined by terminal equipment 121. Parameter alphaSLRepresents a fractional power control factor, which is a configured or pre-configured parameter in the range of 0-1. In particular, when αSLBeing set to 1 means that the path loss will be fully compensated and the target received power will be obtained at the side link receiver (i.e. terminal device 111). When alpha isSLBeing set to 0 then means that a fixed transmit power will be used at the sidelink transmitter (i.e., terminal equipment 121), when PLSLMay not be measured (i.e., block 330 as shown in fig. 3 may be omitted).
In some embodiments, one or more of the parameters in equation (1) may be configured by network device 101 through signaling. In other embodiments, one or more of the parameters in equation (1) may also be pre-configured.
Fig. 6 shows a schematic diagram of another exemplary scenario of a communication system 100 according to an embodiment of the present disclosure. Similarly to fig. 4, only the network device 101, the relay terminal device 111, and the remote terminal device 121 in the communication system 100 are shown in fig. 6, and other devices other than these are omitted. It should be understood that this is done for ease of illustration only and is not intended to imply any limitation on the scope of the disclosure.
As shown in fig. 6, the relay terminal device 111 and the remote terminal device 121 connected thereto are located at the cell center, and the traffic session between the remote terminal device 121 and the network device 101 is still relayed by the relay terminal device 111. In this case, the relay terminal device 111 knows that the relay cluster is located at the cell center according to its measured information (e.g., RSRP or path loss to the network device 101), and thus sets the first information related to path loss in the message (e.g., discovery advertisement/response message) related to the remote terminal device 121 to a non-zero value (e.g., '11111111' or '00000001' — '11111110' in table 1), which indicates that the remote terminal device 121 needs to consider potential interference to the serving cell in its transmission power control. On the remote terminal device 121 side, once the message is acquired, it may determine its transmit power based on the lateral path loss and the path loss with the network device 101 (also referred to as the cell downlink path loss).
For the scenario as shown in fig. 6, fig. 7 shows a flow diagram of a method 700 for determining transmit power based on lateral path loss and cell downlink path loss according to an embodiment of the present disclosure. In some embodiments, for example, method 700 may be implemented as a method for implementing block 340 in method 300 and performed by remote end device 121. It should be understood that method 700 may also include additional steps not shown and/or may omit steps shown, as the scope of the present disclosure is not limited in this respect.
At block 710, terminal device 121 obtains priority configuration information relating to data packets to be transmitted by terminal device 121. In some embodiments, the priority configuration may be, for example, PPPP parameters related to QoS of the service in LTE release 13/14. For example, the terminal device 121 may acquire PPPP parameters related to each data packet to be transmitted from the system.
At block 720, the terminal device 121 determines a first target reception power, a second target reception power, and a maximum transmission power for transmitting the data packet based on the priority configuration information. In some embodiments, terminal device 121 may select the maximum transmit power for the data packet from a plurality of preconfigured maximum transmit powers according to the priority or QoS requirements of the data packet. Furthermore, terminal device 121 may also determine a first target receive power and a second target power based on the priority configuration information, the first target receive power may indicate a target receive power for receiving the data packet at the lateral link receiver (i.e., terminal device 111), and the second target receive power may indicate a target receive power for receiving the data packet at the network receiver (i.e., network device 101). In some embodiments, terminal device 121 may also determine the first target received power, the second target received power, and/or the maximum transmit power for transmitting the data packet in other manners. For example, in some cases, the first target received power, the second target received power, and/or the maximum transmit power used to transmit the data packet may also be independent of the PPPP parameters.
At block 730, terminal device 121 determines a second path loss between it and network device 101. In some embodiments, remote terminal device 121 may determine the path loss between it and network device 101 in different ways for different indications of the first information relating to path loss. For example, when the first information represents a quantized value of the path loss determined by terminal device 111 (e.g., '00000001' — '11111110' in table 1), terminal device 121 may use the value as the second path loss between it and network device 101. When the first information indicates that the terminal device 121 determines the path loss between itself and the network device 101 (e.g., '11111111' in table 1), the terminal device 121 may determine the second path loss between itself and the network device 101. For example, terminal device 121 may determine the second path loss in a similar manner as block 210 shown in fig. 2.
At block 740, terminal device 121 determines a transmit power for transmitting the data packet based on at least the first path loss, the first target receive power, the second path loss, the second target receive power, and the maximum transmit power. In some embodiments, for the scenario shown in fig. 6, since terminal device 121 is close to network device 101, power control of terminal device 121 needs to take into account not only the lateral link path loss (to obtain appropriate received power at the lateral link receiver, i.e., to avoid too high or too low transmit power), but also the path loss between network device 101 and terminal device 121 (to suppress potential in-band interference to the network device). In this case, terminal device 121 may determine transmission power P for transmitting a data packet as followsremoteUE：
Wherein, PmaxRepresents the maximum transmit power of the terminal device 121, which may be determined or otherwise determined based on the PPPP parameter of the data packet, as described above. M denotes a transmission bandwidth in units of Physical Resource Blocks (PRBs). Parameter P0,SLA first target received power is indicated, which is a target received power parameter per PRB in dBm, indicating a target received power at which the data packet is received at the sidelink receiver (i.e., terminal device 111). Parameter P0,DLA second target received power is indicated, which is a target received power parameter per PRB in dBm, indicating a target received power parameter for receiving the data packet at a network receiver (i.e., network device 101). Parameter PLSLRepresenting the first path loss (in terms of lateral path loss) determined by terminal equipment 121. Parameter PLDLRepresenting a second path loss (i.e., cell downlink path loss) between terminal device 121 and network device 101. Alpha is alphaSLAnd alphaDLRepresenting partial power control factors, which are configured or pre-configured parameters ranging from 0 to 1. In particular, when αSLBeing set to 1 means that the path loss will be fully compensated and the target received power will be obtained at the side link receiver (i.e. terminal device 111). When alpha isSLBeing set to 0 then means that a fixed transmit power will be used at the sidelink transmitter (i.e., terminal equipment 121), when PLSLMay not be measured (i.e., block 330 as shown in fig. 3 may be omitted). Similarly, when α isDLBeing set to 1 means that the path loss will be fully compensated and the target received power will be obtained at the network receiver (i.e., network device 101). When alpha isDLBeing set to 0 then means that a fixed transmit power will be used at the network transmitter (i.e. terminal equipment 121), when PLDLMay not be measured (i.e., block 730 as shown in fig. 7 may be omitted). In some embodiments, one or more parameters in equation (2) may be signaled by network device 101The mode is configured. In other embodiments, one or more of the parameters in equation (2) may also be pre-configured.
As can be seen from the above description, embodiments of the present disclosure can reduce power consumption of a remote terminal device by relaying data forwarding of the terminal device. Only the relay terminal device needs to measure and/or estimate its path loss to the network device and, under appropriate conditions, the relay terminal device is able to transmit path loss information to the remote terminal device connected thereto for respective power control, thereby avoiding potential in-band interference with the network device. Since the remote terminal device is prevented from measuring the downlink path loss, the power consumption of the remote terminal device (especially a low-cost device) can be reduced.
Fig. 8 illustrates a block diagram of an apparatus 800 according to certain embodiments of the present disclosure. Apparatus 800 may be implemented at a communication device acting as a relay terminal device, such as terminal device 111 shown in fig. 1. The apparatus 800 may be a software module based system or may be a hardware component such as a transceiver. In particular, in some embodiments, the apparatus 800 may also be considered as an example implementation of the relay terminal device itself.
As shown in fig. 8, the apparatus 800 may comprise a path loss determination unit 810 configured to determine a path loss between a first terminal device and a network device serving the first terminal device, the network device and a second terminal device adjacent to the first terminal device being comprised in the communication system, the second terminal device being connected to the first terminal device and communicating with the network device via the first terminal device. The apparatus 800 may further comprise an information generating unit 820 configured to generate first information related to the path loss based on the determined path loss. The arrangement 800 may further comprise an information encapsulating unit 830 configured to include at least the first information in a message related to the second terminal device. Furthermore, the apparatus 800 may further comprise a message transmitting unit 840 configured to transmit a message to the second terminal device such that the second terminal device determines the first transmit power for the second terminal device based at least on the message.
Fig. 9 illustrates a block diagram of an apparatus 900 according to certain embodiments of the present disclosure. Apparatus 900 may be implemented at a communication device acting as a remote terminal device, such as terminal device 121 or 122 shown in fig. 1. The apparatus 900 may be a system based on software modules, or may be a hardware component such as a transceiver. In particular, in some embodiments, the apparatus 900 may also be considered an example implementation of the remote terminal device itself.
As shown in fig. 9, the apparatus 900 may include a message receiving unit 910 configured to receive a message from a first terminal device adjacent to a second terminal device, the first terminal device, a network device serving the first terminal device, and the second terminal device being included in a communication system, the second terminal device being connected to the first terminal device and communicating with the network device via the first terminal device. The apparatus 900 may further include an information obtaining unit 920 configured to obtain, from the message, first information related to path loss generated by the first terminal device. Furthermore, the apparatus 900 may further comprise a power determining unit 930 configured to determine a first transmit power for the second terminal device based on at least the first information.
For purposes of clarity, certain optional elements of apparatus 800 and/or 900 are not shown in fig. 8 and 9. However, it should be understood that the various features described above with reference to fig. 1-2, 4, and 6 apply equally to the apparatus 800; similarly, the various features described above with reference to fig. 1 and 3-7 are equally applicable to the apparatus 900. Furthermore, each unit of the devices 800 and/or 900 may be a hardware module or a software module. For example, in some embodiments, the apparatus 800 and/or 900 may be implemented in part or in whole using software and/or firmware, e.g., as a computer program product embodied on a computer-readable medium. Alternatively or additionally, the apparatus 800 and/or 900 may be implemented partly or entirely on hardware basis, e.g. as an Integrated Circuit (IC), an Application Specific Integrated Circuit (ASIC), a system on a chip (SOC), a Field Programmable Gate Array (FPGA), etc. The scope of the present disclosure is not limited in this respect.
Fig. 10 illustrates a block diagram of a communication device 1000 suitable for implementing embodiments of the present disclosure. The device 1000 may be used to implement a relay terminal device or a remote terminal device in the embodiments of the present disclosure, such as the relay terminal device 111 and the remote terminal device 121 and 122 shown in fig. 1.
As shown in the example in fig. 10, device 1000 includes a processor 1010. Processor 1010 controls the operation and functions of device 1000. For example, in certain embodiments, the processor 1010 may perform various operations by way of instructions 1030 stored in a memory 1020 coupled thereto. The memory 1020 may be of any suitable type suitable to the local technical environment and may be implemented using any suitable data storage technology, including but not limited to semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems. Although only one memory unit is shown in FIG. 10, there may be multiple physically distinct memory units within device 1000.
The processor 1010 may be of any suitable type suitable to the local technical environment, and may include, but is not limited to, general purpose computers, special purpose computers, microcontrollers, digital signal controllers (DSPs), and one or more cores in a controller-based multi-core controller architecture. The device 1000 may also include multiple processors 1010. The processor 1010 may also be coupled with a transceiver 1040, which transceiver 1040 may enable the reception and transmission of information by way of one or more antennas 1050 and/or other components.
In accordance with embodiments of the present disclosure, the processor 1010 and the memory 1020 may cooperate to implement the methods 200, 300, 500, and/or 700 described above with reference to fig. 2-3, 5, and 7. In particular, when the communication device 1000 is acting as a relay terminal device, the instructions 1030 in the memory 1020, when executed by the processor 1010, may cause the communication device 1000 to perform the method 200. When the communication device 1000 is acting as a remote terminal device, the instructions 1030 in the memory 1020, when executed by the processor 1010, may cause the communication device 1000 to perform the methods 300, 500, and/or 700. It will be appreciated that all of the features described above apply to the device 1000 and are not described in detail herein.
In general, the various example embodiments of this disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Certain aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While aspects of embodiments of the disclosure have been illustrated or described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
By way of example, embodiments of the disclosure may also be described in the context of machine-executable instructions, such as those included in program modules, being executed in devices on target real or virtual processors. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. In various embodiments, the functionality of the program modules may be combined or divided between program modules as described. Machine-executable instructions for program modules may be executed within local or distributed devices. In a distributed facility, program modules may be located in both local and remote memory storage media.
Computer program code for implementing the methods of the present disclosure may be written in one or more programming languages. These computer program codes may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the computer or other programmable data processing apparatus, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. The program code may execute entirely on the computer, partly on the computer, as a stand-alone software package, partly on the computer and partly on a remote computer or entirely on the remote computer or server.
In the context of this disclosure, a machine-readable medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. More detailed examples of a machine-readable storage medium include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical storage device, a magnetic storage device, or any suitable combination thereof.
Additionally, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In some cases, multitasking or parallel processing may be beneficial. Likewise, while the above discussion contains certain specific implementation details, this should not be construed as limiting the scope of any invention or claims, but rather as describing particular embodiments that may be directed to particular inventions. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims (30)
1. A method for controlling power in a communication system, comprising:
determining, at a first terminal device, a path loss between the first terminal device and a network device serving the first terminal device, the network device and a second terminal device adjacent to the first terminal device being comprised in the communication system, the second terminal device being connected to the first terminal device and communicating with the network device via the first terminal device;
generating first information related to the path loss based on the determined path loss;
including at least the first information in a message relating to the second terminal device; and
transmitting the message to the second terminal device to cause the second terminal device to determine a first transmit power for the second terminal device based at least on the message.
2. The method of claim 1, wherein generating the first information comprises:
generating the first information to instruct the second terminal device to ignore an effect of the second terminal device on the network device when determining the first transmission power.
3. The method of claim 1, wherein generating the first information comprises:
quantizing the value of the path loss; and
including the quantized value of the path loss in the first information.
4. The method of claim 1, wherein generating the first information comprises:
generating the first information to instruct the second terminal device to determine by itself an additional path loss between the second terminal device and the network device.
5. The method of claim 1, wherein the message is for enabling the second terminal device to discover the first terminal device, and including at least the first information in the message comprises:
including the first information in the message based on the discovered pattern.
6. The method of claim 1, wherein the method further comprises:
generating second information related to a second transmit power for transmitting the message; and
including the second information in the message.
7. The method of claim 1, wherein transmitting the message to the second terminal device comprises:
periodically transmitting the message to the second terminal device.
8. A method for controlling power in a communication system, comprising:
receiving, at a second terminal device, a message from a first terminal device adjacent to the second terminal device, the first terminal device, a network device serving the first terminal device, and the second terminal device being included in the communication system, the second terminal device being connected to the first terminal device and communicating with the network device via the first terminal device;
acquiring first information related to path loss generated by the first terminal equipment from the message; and
determining a first transmit power for the second terminal device based at least on the first information.
9. The method of claim 8, wherein receiving the message from the first terminal device comprises:
periodically receiving the message from the first terminal device.
10. The method of claim 8, wherein the message is for enabling the second terminal device to discover the first terminal device.
11. The method of claim 8, wherein the message includes second information related to a second transmit power used to transmit the message, and the method further comprises:
determining a second reference signal received power in response to receiving a second reference signal from the first terminal device;
acquiring the second information from the message; and
determining a first path loss between the second terminal device and the first terminal device based on the second reference signal received power and the second information.
12. The method of claim 11, wherein determining the first transmit power comprises:
obtaining priority configuration information relating to data packets to be transmitted by the second terminal device; and
determining a maximum transmit power for transmitting the data packet based on the priority configuration information.
13. The method of claim 12, wherein the first information indicates to the second terminal device to ignore an effect of the second terminal device on the network device when determining the first transmit power, and determining the first transmit power further comprises:
determining a first target receive power based on the priority configuration information, the first target receive power indicating a target receive power for receiving the data packet at the first terminal device; and
determining the first transmit power based at least on the first path loss, the first target receive power, and the maximum transmit power.
14. The method of claim 12, wherein the first information comprises a second path loss between the first terminal device and the network device as determined by the first terminal device, and determining the first transmit power further comprises:
determining, based on the priority configuration information, a first target receive power indicating a target receive power for receiving the data packet at the first terminal device and a second target receive power indicating a target receive power for receiving the data packet at the network device;
acquiring the second path loss from the first information; and
determining the first transmit power based at least on the first path loss, the first target receive power, the second path loss, the second target receive power, and the maximum transmit power.
15. The method of claim 12, wherein the first information indicates that the second terminal device is to determine a third path loss between the second terminal device and the network device on its own, and determining the first transmit power further comprises:
determining, based on the priority configuration information, a first target receive power indicating a target receive power for receiving the data packet at the first terminal device and a second target receive power indicating a target receive power for receiving the data packet at the network device;
determining the third path loss between the second terminal device and the network device; and
determining the first transmit power based at least on the first path loss, the first target received power, the third path loss, the second target received power, and the maximum transmit power.
16. A communication device, comprising:
a processor; and
a memory storing instructions that, when executed by the processor, cause the communication device to:
determining a path loss between the communication device and a network device serving the communication device, the network device and a terminal device in proximity to the communication device being comprised in a communication system, the terminal device being connected to the communication device and communicating with the network device via the communication device;
generating first information related to the path loss based on the determined path loss;
including at least the first information in a message relating to the terminal device; and
transmitting the message to the terminal device to cause the terminal device to determine a first transmit power for the terminal device based at least on the message.
17. The communication device of claim 16, wherein the instructions, when executed by the processor, cause the communication device to generate the first information by:
generating the first information to instruct the terminal device to ignore an effect of the terminal device on the network device when determining the first transmission power.
18. The communication device of claim 16, wherein the instructions, when executed by the processor, cause the communication device to generate the first information by:
quantizing the value of the path loss; and
including the quantized value of the path loss in the first information.
19. The communication device of claim 16, wherein the instructions, when executed by the processor, cause the communication device to generate the first information by:
generating the first information to instruct the terminal device to determine by itself an additional path loss between the terminal device and the network device.
20. The communication device of claim 16, wherein the message is for enabling the terminal device to discover the communication device, and the instructions, when executed by the processor, cause the communication device to include at least the first information in the message by:
including the first information in the message based on the discovered pattern.
21. The communication device of claim 16, wherein the instructions, when executed by the processor, further cause the communication device to:
generating second information related to a second transmit power for transmitting the message; and
including the second information in the message.
22. The communication device of claim 16, wherein the instructions, when executed by the processor, cause the communication device to transmit the message to the terminal device by:
periodically transmitting the message to the terminal device.
23. A communication device, comprising:
a processor; and
a memory storing instructions that, when executed by the processor, cause the communication device to:
receiving a message from a terminal device adjacent to the communication device, the terminal device, a network device serving the terminal device, and the communication device being included in a communication system, the communication device being connected to the terminal device and communicating with the network device via the terminal device;
acquiring first information related to path loss generated by the terminal equipment from the message; and
determining a first transmit power for the communication device based at least on the first information.
24. The communication device of claim 23, wherein the instructions, when executed by the processor, cause the communication device to receive the message from the terminal device by:
periodically receiving the message from the terminal device.
25. The communication device of claim 23, wherein the message is for enabling the communication device to discover the terminal device.
26. The communication device of claim 23, wherein the message comprises second information related to a second transmit power used to transmit the message, and the instructions, when executed by the processor, further cause the communication device to:
determining a second reference signal received power in response to receiving a second reference signal from the terminal device;
acquiring the second information from the message; and
determining a first path loss between the communication device and the terminal device based on the second reference signal received power and the second information.
27. The communication device of claim 26, wherein the instructions, when executed by the processor, cause the communication device to determine the first transmit power by:
obtaining priority configuration information relating to data packets to be transmitted by the communication device; and
determining a maximum transmit power for transmitting the data packet based on the priority configuration information.
28. The communication device of claim 27, wherein the first information indicates that the communication device disregards an effect of the communication device on the network device when determining the first transmit power, and the instructions, when executed by the processor, further cause the communication device to determine the first transmit power by:
determining a first target receive power based on the priority configuration information, the first target receive power indicating a target receive power for receiving the data packet at the terminal device; and
determining the first transmit power based at least on the first path loss, the first target receive power, and the maximum transmit power.
29. The communication device of claim 27, wherein the first information comprises a second path loss between the terminal device and the network device determined by the terminal device, and the instructions, when executed by the processor, further cause the communication device to determine the first transmit power by:
determining, based on the priority configuration information, a first target receive power indicating a target receive power for receiving the data packet at the terminal device and a second target receive power indicating a target receive power for receiving the data packet at the network device;
acquiring the second path loss from the first information; and
determining the first transmit power based at least on the first path loss, the first target receive power, the second path loss, the second target receive power, and the maximum transmit power.
30. The communication device of claim 27, wherein the first information indicates that the communication device is self-determining a third path loss between the communication device and the network device, and the instructions, when executed by the processor, further cause the communication device to determine the first transmit power by:
determining, based on the priority configuration information, a first target receive power indicating a target receive power for receiving the data packet at the terminal device and a second target receive power indicating a target receive power for receiving the data packet at the network device;
determining the third path loss between the communication device and the network device; and
determining the first transmit power based at least on the first path loss, the first target received power, the third path loss, the second target received power, and the maximum transmit power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710184197.2A CN108632973B (en) | 2017-03-24 | 2017-03-24 | Method and apparatus for controlling power in a communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710184197.2A CN108632973B (en) | 2017-03-24 | 2017-03-24 | Method and apparatus for controlling power in a communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108632973A CN108632973A (en) | 2018-10-09 |
| CN108632973B true CN108632973B (en) | 2021-08-31 |
Family
ID=63707733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710184197.2A Active CN108632973B (en) | 2017-03-24 | 2017-03-24 | Method and apparatus for controlling power in a communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108632973B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020126042A1 (en) * | 2018-12-21 | 2020-06-25 | Huawei Technologies Co., Ltd. | Beam-selective transmission power control scheme |
| CN111294765B (en) * | 2019-01-04 | 2021-10-08 | 展讯通信（上海）有限公司 | Method and device for maintaining and triggering maintenance of data transmission link |
| US11463963B2 (en) * | 2019-01-10 | 2022-10-04 | Qualcomm Incorporated | Path loss estimation |
| CN111586827B (en) * | 2019-02-15 | 2021-12-14 | 成都华为技术有限公司 | Power control method and power control device |
| US11962361B2 (en) * | 2019-07-05 | 2024-04-16 | Beijing Xiaomi Mobile Software Co., Ltd. | Methods, apparatuses, device and storage medium for controlling transmitted power of sidelink communication |
| WO2021016741A1 (en) * | 2019-07-26 | 2021-02-04 | Nokia Solutions And Networks Oy | Method, device and computer readable medium for controlling d2d routing |
| CN112312453B (en) * | 2019-07-30 | 2023-02-14 | 华为技术有限公司 | Communication processing method, communication processing device and system |
| CN112533247B (en) * | 2019-09-19 | 2022-06-21 | 上海朗帛通信技术有限公司 | Method and apparatus in a node used for wireless communication |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9014104B2 (en) * | 2008-11-04 | 2015-04-21 | Qualcomm Incorporated | Transmit power control based on receiver gain setting in a wireless communication network |
| CN101932088B (en) * | 2009-06-22 | 2014-02-26 | 华为技术有限公司 | Power control and regulation methods and device |
| US20120314600A1 (en) * | 2011-06-13 | 2012-12-13 | Interdigital Patent Holdings, Inc. | Method for controlling transmit power of a mobile station |
| US9338807B2 (en) * | 2012-03-19 | 2016-05-10 | Futurewei Technologies, Inc. | System and method for direct mobile communications power control |
| WO2014162576A1 (en) * | 2013-04-04 | 2014-10-09 | 富士通株式会社 | Communication system, communication terminal, and base station |
| US9369950B2 (en) * | 2014-06-05 | 2016-06-14 | Sony Corporation | User equipment and method of searching for a cell |
| US9565608B2 (en) * | 2015-03-27 | 2017-02-07 | Intel IP Corporation | Method for performing mobile communications and mobile radio communication terminal device |
-
2017
- 2017-03-24 CN CN201710184197.2A patent/CN108632973B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108632973A (en) | 2018-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108632973B (en) | Method and apparatus for controlling power in a communication system | |
| CN107113902B (en) | Network node, wireless device and method for selecting communication mode in wireless communication network | |
| US10952152B2 (en) | Path loss determining method and apparatus | |
| US11546861B2 (en) | Techniques in inter-band and intra-band dynamic power sharing in dual connectivity communications | |
| US20210105725A1 (en) | Methods and apparatuses for multi-panel power control | |
| EP3202052B1 (en) | Interference and/or power reduction for multiple relay nodes using cooperative beamforming | |
| JP6245270B2 (en) | Wireless communication method, wireless communication system, wireless station, and wireless terminal | |
| JPWO2019031190A1 (en) | Communication device, communication control method, and computer program | |
| EP3808015B1 (en) | Link-adaptation for passive intermodulation avoidance | |
| KR20150013752A (en) | Methods and apparatus for opportunistic offloading of network communications to device-to-device communication | |
| US9825729B2 (en) | Spatial reuse of Wi-Fi channels with interference estimation and control | |
| WO2019001411A1 (en) | Electronic apparatus, wireless communication device, and wireless communication method | |
| US20190140806A1 (en) | Radio Network Node, a Wireless Device and Methods therein for Reference Signal Configuration | |
| JP2019520006A (en) | Data transmission method and apparatus, and terminal | |
| CN110741718B (en) | Method and apparatus for random access configuration | |
| WO2018201941A1 (en) | Method and device for configuring parameters | |
| CN112673680B (en) | Power determination method, device and equipment | |
| TW201538023A (en) | Access point assisted spatial reuse | |
| US20210028815A1 (en) | Physical uplink shared channel (pusch) frequency hopping allocation | |
| EP4327484A1 (en) | Ue self-calibration in communication systems | |
| CN109644395A (en) | Processing unit and the method wherein activated for starting cell | |
| US11350447B2 (en) | Method and apparatus for operations in different frequency bands within a radio device | |
| JP2020053788A (en) | Large zone cell base station, terrestrial cell base station, system including them, and base station management device | |
| CN111385865A (en) | Random access method, device, system and storage medium | |
| US20240163929A1 (en) | Devices and methods for supporting flexible uplink resource request |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |