TW201840227A - Reduced power mode for millimeter wave base stations - Google Patents

Abstract

Certain aspects of the present disclosure relate to methods and apparatus regarding reduced power mode for millimeter wave base stations.

Description

Reduced power mode for millimeter wave base stations

The present patent application claims the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the present disclosure.

In summary, the present disclosure relates to communication systems and, more particularly, to methods and apparatus related to reduced power modes for millimeter wave base stations.

Wireless communication systems are widely deployed to provide a variety of telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may employ a multiplex access technology capable of supporting communication with multiple users via sharing of available system resources (eg, bandwidth, transmit power). Examples of such multiplex access technologies include Long Term Evolution (LTE) systems, code division multiplex access (CDMA) systems, time division multiplex access (TDMA) systems, frequency division multiplex access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) system, Single Carrier Frequency Division Multiple Access (SC-FDMA) system, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system.

In some examples, a wireless multiplex access communication system can include multiple base stations, each of which simultaneously supports communication for a plurality of communication devices (also referred to as user equipment (UE)). In an LTE or LTE-A network, a set of one or more base stations may define an evolved Node B (eNB). In other examples (eg, in next generation or 5G networks), a wireless multiplex access communication system can include multiple central units (CUs) (eg, a central node (CN), an access node controller (ANC) (), etc.) Multiple distributed units (DUs) for communication (eg, edge unit (EU), edge node (EN), radio head (RH), smart radio head (SRH), transmit and receive point (TRP) And the like, wherein the set of one or more decentralized units in communication with the central unit may define an access node (eg, a new radio base station (NR BS), a new radio node B (NR NB), a network node, 5G NB, eNB, etc.). The base station or DU may communicate with the set of UEs on the downlink channel (e.g., for transmissions from the base station to the UE) and the uplink channel (e.g., for transmissions from the UE to the base station or the decentralized unit).

These multiplex access technologies have been employed in various telecommunication standards to provide a sharing protocol that enables different wireless devices to communicate at the city, national, regional, and even global levels. An example of an emerging telecommunication standard is the New Radio (NR), for example, 5G radio access. NR is an enhanced set of LTE mobile service standards published by the 3rd Generation Partnership Project (3GPP). It is designed to be open to others by improving spectral efficiency, reducing cost, improving service, utilizing new spectrum, and using OFDMA with cyclic prefix (CP) on the downlink (DL) and on the uplink (UL). The standards are better integrated to better support mobile broadband Internet access, as well as support for beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

However, as the demand for mobile broadband access continues to grow, there is a desire to further improve NR technology. Preferably, such improvements should apply to other multiplex access technologies and telecommunications standards that employ such technologies.

The systems, methods and devices of the present disclosure have several aspects, none of which are individually responsible for their desired attributes. Without limiting the scope of the content of the present invention as expressed by the scope of the appended claims, some features will now be briefly discussed. After considering this discussion, and especially after reading the section entitled "Implementation," it will be appreciated how the features of the present disclosure provide advantages, including improved communication between access points and stations in a wireless network. .

Certain aspects provide a method for wireless communication by a first base station of a first radio access technology (RAT). In summary, the method includes: connecting with a user equipment (UE) capable of communicating via the first RAT and the second RAT; and transmitting a basic information set of the second base station of the second RAT, the second RAT There is a smaller coverage area at least partially within the coverage area of the first base station.

Certain aspects provide a method for wireless communication by a first base station of a first radio access technology (RAT). In summary, the method includes: determining that a second base station of a second RAT is transmitting a basic information set of the first base station to a user equipment (UE), wherein the first RAT has an at least partially at the second base a smaller coverage area within the coverage area of the station; and in response to the decision, the second base station of the second RAT is transmitting the basic information set of the first base station, stopping transmitting the basic information set and limiting at least the reference signal ( RS) transmission.

Certain aspects provide a method for wireless communication by a User Equipment (UE). In summary, the method includes: connecting with a first base station of a first radio access technology (RAT); obtaining, from the first base station, a basic information set of a second base station of the second RAT, the second RAT having a smaller coverage area at least partially within the coverage area of the first base station; and using the basic information set to access the second base station.

The various aspects typically include methods, apparatuses, systems, computer readable media, and processing systems as fully described herein with reference to the drawings and illustrated in the drawings.

To achieve the foregoing and related ends, one or more aspects include features that are fully described below and particularly pointed out in the claims. The following description and the annexed drawings set forth in the claims However, the features indicate only a few of the various ways in which the principles of the various aspects can be employed, and the description is intended to include all such aspects and their equivalents.

Various aspects of the present disclosure relate to methods and apparatus for reducing power modes for millimeter wave base stations.

Aspects of the present disclosure provide apparatus, methods, processing systems, and computer readable media for new radio (NR) (new radio access technology or 5G technology).

NR can support a variety of wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth (eg, over 80 MHz), millimeter-wave (mmW) targeting high carrier frequencies (eg, 60 GHz), Large-scale MTC (mMTC) targeting non-backward compatible MTC technology, and/or mission critical for ultra-reliable low-latency communication (URLLC). These services can include latency and reliability requirements. These services may also have different Transmission Time Intervals (TTIs) to meet corresponding Quality of Service (QoS) requirements. In addition, the services can coexist in the same subframe.

The following description provides examples without limiting the scope, applicability or examples set forth in the claims. Changes may be made in the function and arrangement of the elements of the disclosure without departing from the scope of the invention. Various examples may omit, substitute, or add various programs or components as appropriate. For example, the methods described may be performed in a different order than that described, and various steps may be added, omitted or combined. In addition, features described with respect to some examples may be combined into some other examples. For example, a device may be implemented or a method may be implemented using any number of aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such an apparatus or method that is implemented using other structures, functions, or structures and functions other than the various aspects disclosed herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claimed scope. This document uses the term "exemplary" to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other aspects.

The techniques described herein can be used in a variety of wireless communication networks, such as LTE, CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network may implement a radio technology such as Universal Terrestrial Radio Access (UTRA), cdma2000, and the like. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. Cdma2000 covers the IS-2000, IS-95, and IS-856 standards. A TDMA network can implement a radio technology such as the Global System for Mobile Communications (GSM). The OFDMA network can implement such as NR (eg, 5G RA), evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash- Radio technology such as OFDM. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). NR is an emerging wireless communication technology under development that combines the 5G Technology Forum (5GTF). 3GPP Long Term Evolution (LTE) and Improved LTE (LTE-A) are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). Cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein can be used with the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies. For the sake of clarity, although the terms associated with 3G and/or 4G wireless technologies may be used herein to describe various aspects, aspects of the present disclosure may be applied to communication systems based on other generations (eg, 5G and beyond). Technology (including NR technology)). Example wireless communication system

1 illustrates an example wireless network 100 in which aspects of the present content may be performed, such as a new radio (NR) or 5G network.

As shown in FIG. 1, wireless network 100 can include a plurality of BSs 110 and other network entities. The BS can be a station that communicates with the UE. Each BS 110 can provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to the coverage area of Node B and/or the Node B subsystem serving the coverage area, depending on the context in which the term is used. In the NR system, the term "cell" and eNB, Node B, 5G NB, AP, NR BS, NR BS or TRP may be interchanged. In some instances, the cells may not necessarily be stationary, and the geographic area of the cells may move according to the location of the mobile base station. In some examples, the base station can be interconnected to each other and/or to the wireless network 100 via various types of backhaul interfaces (eg, direct physical connections, virtual networks, or interfaces using any suitable transport network). One or more other base stations or network nodes (not shown) are interconnected.

In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a particular Radio Access Technology (RAT) and can operate on one or more frequencies. The RAT can also be called radio technology, air intermediaries, and the like. The frequency can also be referred to as a carrier, a frequency channel, and the like. Each frequency can support a single RAT in a given geographic area in order to avoid interference between wireless networks with different RATs. In some cases, an NR or 5G RAT network can be deployed.

BS can provide communication coverage for macrocells, picocytes, femtocells, and/or other types of cells. Macro cells can cover a relatively large geographic area (eg, a few kilometers in radius) and can allow unrestricted access by UEs with service subscriptions. Pico cells can cover a relatively small geographic area and can allow unrestricted access by UEs with service subscriptions. The femtocell may cover a relatively small geographic area (eg, a dwelling) and may allow for UEs associated with the femtocell (eg, UEs in a Closed Subscriber Group (CSG), UEs for users in the home) Etc.) Perform restricted access. A BS for a macro cell can be referred to as a macro BS. A BS for pico cells may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In the example illustrated in FIG. 1, BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cells 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. The BS can support one or more (eg, three) cells.

Wireless network 100 can also include a relay station. A relay station is a station that receives data transmissions and/or other information from upstream stations (e.g., BSs or UEs) and transmits data transmissions and/or other information to downstream stations (e.g., UEs or BSs). The relay station may also be a UE that relays transmissions for other UEs. In the example illustrated in FIG. 1, relay station 110r can communicate with BS 110a and UE 120r to facilitate communication between BS 110a and UE 120r. A relay station may also be referred to as a relay BS, a repeater, or the like.

Wireless network 100 may be a heterogeneous network that includes different types of BSs (e.g., macro BSs, pico BSs, femto BSs, repeaters, etc.). The different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (eg, 20 watts), while a pico BS, a femto BS, and a repeater may have a lower transmit power level (eg, 1 watt).

Wireless network 100 can support synchronous or asynchronous jobs. For synchronous operation, the BSs can have similar frame timing, and transmissions from different BSs can be approximately aligned in time. For non-synchronous jobs, the BSs may have different frame timings, and transmissions from different BSs may be misaligned in time. The techniques described herein can be used for both synchronous and non-synchronous jobs.

Network controller 130 can be coupled to a group of BSs and provide coordination and control for such BSs. Network controller 130 can communicate with BS 110 via a loadback. The BSs 110 can also communicate with each other directly or indirectly, for example, via wireless or wired backhaul.

UEs 120 (e.g., 120x, 120y, etc.) may be interspersed throughout wireless network 100, and each UE may be stationary or mobile. The UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a customer premises equipment (CPE), a cellular telephone, a smart telephone, a personal digital assistant (PDA), a wireless data modem, a wireless communication device, Handheld devices, laptops, wireless phones, wireless area loop (WLL) stations, tablet devices, cameras, gaming devices, laptops, smart phones, ultrabooks, medical devices or medical devices, biometric sensors/ Devices, wearable devices (eg, smart watches, smart clothing, smart glasses, smart wristbands, smart jewelry (eg, smart rings, smart bracelets, etc.)), entertainment devices (eg, music devices, video devices, satellite radio units, etc.) ), vehicle components or sensors, smart instrumentation/sensors, industrial manufacturing equipment, global positioning system equipment, or any other suitable device configured to communicate via wireless or wired media. Some UEs may be considered as evolved or machine type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a BS, another device (eg, a remote device), or some other entity . A wireless node may provide, for example, a connection to a network (e.g., a wide area network such as the Internet or a cellular network) or to a network via a wired or wireless communication link. Some UEs can be considered as Internet of Things (IoT) devices. In Figure 1, the solid line with double arrows indicates the desired transmission between the UE and the serving BS, which is the BS designated to serve the UE on the downlink and/or uplink. A dashed line with double arrows indicates interference transmission between the UE and the BS.

Some wireless networks (e.g., LTE) utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, bins, and the like. Data can be used to modulate each subcarrier. Typically, modulation symbols are transmitted using OFDM in the frequency domain and SC-FDM in the time domain. The spacing between adjacent subcarriers may be fixed, and the total number of subcarriers (K) may depend on the system bandwidth. For example, the subcarrier spacing may be 15 kHz and the minimum resource configuration (referred to as "resource block") may be 12 subcarriers (or 180 kHz). Thus, for a system bandwidth of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), the nominal FFT size can be equal to 128, 256, 512, 1024, or 2048, respectively. The system bandwidth can also be divided into sub-bands. For example, the subband can cover 1.08 MHz (ie, 6 resource blocks), and for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, there can be 1, 2, 4, 8, or 16 times, respectively. frequency band.

Although aspects of the examples described herein can be associated with LTE technology, aspects of the present disclosure can be applied with other wireless communication systems (eg, NR). The NR may utilize OFDM with CP on the uplink and downlink, and may include support for half-duplex operation using Time Division Duplex (TDD). Can support 100 MHz single component carrier bandwidth. The NR resource block can span 12 subcarriers with a subcarrier bandwidth of 75 kHz for a duration of 0.1 ms. Each radio frame can consist of 50 sub-frames with a length of 10 ms. Therefore, each subframe can have a length of 0.2 ms. Each subframe can indicate the link direction (ie, DL or UL) for data transmission and can dynamically switch the link direction for each subframe. Each subframe can include DL/UL data as well as DL/UL control data. The UL and DL subframes for NR can be described in more detail below with respect to Figures 6 and 7. Beamforming can be supported and the beam direction can be dynamically configured. It is also possible to support MIMO transmission with precoding. The MIMO configuration in the DL can support up to 8 transmit antennas, where multiple layers of DL transmit up to 8 streams and up to 2 streams per UE. Multi-layer transmission with up to 2 streams per UE can be supported. It can support the polymerization of multiple cells with up to 8 serving cells. Alternatively, the NR can support different null intermediaries other than the OFDM-based null interfacing. The NR network may include entities such as CUs and/or DUs.

In some instances, access to an empty mediation plane may be scheduled, where a scheduling entity (eg, a base station) allocates resources for communication between some or all of its devices and devices within its service area or cell. In the context of this case, as discussed further below, the scheduling entity may be responsible for scheduling, allocating, reconfiguring, and releasing resources for one or more dependent entities. That is, for scheduled communications, the dependent entity utilizes the resources allocated by the scheduling entity. A base station is not the only entity that can be used as a scheduling entity. That is, in some examples, a UE may be used as a scheduling entity that schedules resources for one or more subordinate entities (eg, one or more other UEs). In this example, the UE is acting as a scheduling entity, while other UEs utilize the resources scheduled by the UE for wireless communication. The UE can be used as a scheduling entity in a peer-to-peer (P2P) network and/or in a mesh network. In the mesh network instance, in addition to communicating with the scheduling entity, the UEs may optionally communicate directly with each other.

Thus, in a wireless communication network having scheduled access to time-frequency resources and having a cellular configuration, a P2P configuration, and a mesh configuration, the scheduling entity and one or more slave entities can utilize the scheduled resources for communication. .

As mentioned above, the RAN may include a CU and a DU. The NR BS (eg, eNB, 5G Node B, Node B, Transmit Receiving Point (TPR), Access Point (AP)) may correspond to one or more BSs. NR cells can be configured to access cells (ACell) or data only cells (DCells). For example, a RAN (eg, a central unit or a decentralized unit) can configure cells. The DCell can be a cell for carrier aggregation or dual connectivity, but not for initial access, cell selection/reselection or handover. In some cases, the DCell may not transmit a synchronization signal - in some cases, the DCell may send the SS. The NR BS may send a downlink signal for indicating the cell type to the UE. Based on the cell type indication, the UE can communicate with the NR BS. For example, the UE may decide to consider NR BS for cell selection, access, handover, and/or measurement based on the indicated cell type.

2 illustrates an example logical architecture of a decentralized radio access network (RAN) 200 that can be implemented in the wireless communication system illustrated in FIG. The 5G access node 206 can include an access node controller (ANC) 202. The ANC may be the central unit (CU) of the decentralized RAN 200. The backhaul interface to the Next Generation Core Network (NG-CN) 204 can be terminated at the ANC. The backhaul interface to the adjacent Next Generation Access Node (NG-AN) can be terminated at the ANC. The ANC may include one or more TRPs 208 (which may also be referred to as BS, NR BS, Node B, 5G NB, AP, or some other terminology). As mentioned above, TRP can be used interchangeably with "cells".

TRP 208 can be a DU. The TRP can be connected to one ANC (ANC 202) or more than one ANC (not shown). For example, for RAN sharing, radio as a service (RaaS), and service-oriented AND deployment, a TRP can connect to more than one ANC. The TRP can include one or more antennas. The TRP may be configured to provide traffic to the UE separately (eg, dynamically selected) or jointly (eg, joint transmission).

The local architecture 200 can be used to illustrate the predecessor definition. The architecture can be defined to support pre-transmission scenarios across different deployment types. For example, the architecture can be based on the capabilities of the transmission network (eg, bandwidth, delay, and/or signal interference).

This architecture can share features and/or components with LTE. According to various aspects, the next-generation AN (NG-AN) 210 can support dual connection with NR. The NG-AN can share a shared preamble for LTE and NR.

This architecture enables coordination between and among the various TRPs 208. For example, coordination may be pre-set within the TRP via the ANC 202 and/or across the TRP. Depending on the aspect, no inter-TRP interface may be required/not present.

Depending on the aspect, there may be a dynamic configuration of split logic functionality in architecture 200. As will be described in more detail with respect to FIG. 5, a Radio Resource Control (RRC) layer, a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and an entity (PHY) may be employed. The layers are adaptively placed at the DU or CU (eg, TRP or ANC, respectively). According to some aspects, a BS can include a central unit (CU) (eg, ANC 202) and/or one or more decentralized units (eg, one or more TRPs 208).

FIG. 3 illustrates an example physical architecture of a decentralized RAN 300 in accordance with various aspects of the present disclosure. A centralized core network unit (C-CU) 302 can host core network functions. The C-CU can be deployed centrally. The C-CU function can be offloaded (eg, to Advanced Wireless Service (AWS)) to handle peak capacity.

The centralized RAN unit (C-RU) 304 can host one or more ANC functions. Optionally, the C-RU can host the core network function at the local end. C-RUs can have a decentralized deployment. The C-RU can be closer to the edge of the network.

The DU 306 can host one or more TRPs (Edge Node (EN), Edge Unit (EU), Radio Head (RH), Smart Radio Head (SRH), etc.). The DU can be located at the edge of a network with radio frequency (RF) functionality.

4 illustrates example elements of BS 110 and UE 120 illustrated in FIG. 1, which may be used to implement various aspects of the present disclosure. As mentioned above, the BS can include a TRP. One or more elements of BS 110 and UE 120 may be used to implement aspects of the present disclosure. For example, antenna 452, Tx/Rx 222, processor 466, 458, 464 and/or controller/processor 480 of UE 120, and/or antenna 434, processor 460, 420, 438 and/or control of BS 110 The processor/processor 440 can be used to perform the operations described herein and illustrated with reference to Figures 8-10.

4 illustrates a block diagram of a design of BS 110 and UE 120 (which may be one of the BSs in FIG. 1 and one of the UEs). For a restricted association scenario, base station 110 may be macro BS 110c in FIG. 1, and UE 120 may be UE 120y. Base station 110 can also be some other type of base station. The base station 110 can be equipped with antennas 434a through 434t, and the UE 120 can be equipped with antennas 452a through 452r.

At base station 110, transmit processor 420 can receive data from data source 412 and receive control information from controller/processor 440. Control information may be used for a Physical Broadcast Channel (PBCH), a Physical Control Format Indicator Channel (PCFICH), an Entity Hybrid ARQ Indicator Channel (PHICH), a Physical Downlink Control Channel (PDCCH), and the like. The data can be used for a physical downlink shared channel (PDSCH) or the like. Processor 420 can process (e.g., encode and symbol map) data and control information separately to obtain data symbols and control symbols. Processor 420 can also generate reference symbols such as for PSS, SSS, and cell-specific reference signals. A transmit (TX) multiple-input multiple-output (MIMO) processor 430 can perform spatial processing (eg, precoding) on data symbols, control symbols, and/or reference symbols (if applicable), and can be directed to a modulator (MOD) 432a through 432t provide an output symbol stream. For example, TX MIMO processor 430 can perform certain aspects described herein for RS multiplex. Each modulator 432 can process the corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 432 can further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. Downlink signals from modulators 432a through 432t may be transmitted via antennas 434a through 434t, respectively.

At UE 120, antennas 452a through 452r may receive downlink signals from base station 110 and may provide received signals to demodulators (DEMODs) 454a through 454r, respectively. Each demodulator 454 can condition (e.g., filter, amplify, downconvert, and digitize) the respective received signals to obtain input samples. Each demodulator 454 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 456 can obtain received symbols from all of demodulators 454a through 454r, perform MIMO detection on received symbols (if applicable), and provide detected symbols. For example, MIMO detector 456 provides the detected RSs transmitted using the techniques described herein. Receive processor 458 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120 to data slot 460, and provide decoded to controller/processor 480. Control information. According to one or more cases, the CoMP aspect may include providing an antenna and some Tx/Rx functions such that it is located in a decentralized unit. For example, some Tx/Rx processing can be done in a central unit, while other processing can be done at a decentralized unit. For example, BS modulator/demodulator 432 may be in a decentralized unit, depending on one or more aspects as illustrated in the figures.

On the uplink, at UE 120, transmit processor 464 can receive and process data from data source 462 (e.g., for physical uplink shared channel (PUSCH)) and control information from controller/processor 480. (For example, for Physical Uplink Control Channel (PUCCH)). Transmit processor 464 can also generate reference symbols for the reference signals. The symbols from the transmit processor 464 may be precoded by the TX MIMO processor 466 (if applicable), further processed by the demodulators 454a through 454r (e.g., for SC-FDM, etc.), and transmitted to the base station 110. At BS 110, the uplink signal from UE 120 may be received by antenna 434, processed by modulator 432, detected by MIMO detector 436 (if applicable), and further processed by receive processor 438 to The decoded data and control information transmitted by the UE 120 is obtained. Receive processor 438 can provide decoded data to data slot 439 and provide decoded control information to controller/processor 440.

Controllers/processors 440 and 480 can direct operations at base station 110 and UE 120, respectively. Processor 440 and/or other processors and modules at base station 110 may perform or direct the execution of functional blocks such as those illustrated in Figures 8-10 and/or other processes for the techniques described herein. Processors 480 and/or other processors and modules at UE 120 may also perform or direct processes for the techniques described herein. Memory 442 and 482 can store data and code for BS 110 and UE 120, respectively. Scheduler 444 can schedule UEs for data transmission on the downlink and/or uplink.

FIG. 5 illustrates a diagram 500 illustrating an example of implementing a protocol stack in accordance with various aspects of the present disclosure. The illustrated communication protocol stack can be implemented by devices operating in a 5G system (eg, supporting an uplink-based mobility system). Diagram 500 illustrates a communication protocol stack including a Radio Resource Control (RRC) layer 510, a Packet Data Convergence Protocol (PDCP) layer 515, a Radio Link Control (RLC) layer 520, a Media Access Control (MAC) layer 525, and an entity. (PHY) layer 530. In various examples, the layers of the protocol stack can be implemented as separate software modules, portions of processors or ASICs, portions of non-co-located devices connected via communication links, or various combinations thereof. Co-located and non-co-located implementations can be used, for example, in protocol stacks for network access devices (e.g., AN, CU, and/or DU) or UEs.

The first option 505-a illustrates a split implementation of a protocol stack in which a centralized network access device (eg, ANC 202 in FIG. 2) and a decentralized network access device (eg, DU in FIG. 2) 208) Implementation of splitting the stack of agreements. In the first option 505-a, the RRC layer 510 and the PDCP layer 515 may be implemented by a central unit, and the RLC layer 520, the MAC layer 525, and the physical layer 530 may be implemented by a DU. In various examples, the CUs and DUs may be co-located or non-co-located. The first option 505-a can be useful in macrocell, minicell or picocell deployments.

The second option 505-b illustrates a unified implementation of the protocol stack, where the protocol stack is on a single network access device (eg, an access node (AN), a new radio base station (NR BS), a new radio node B (NR) NB), network node (NN), etc. implemented in. In the second option, the RRC layer 510, the PDCP layer 515, the RLC layer 520, the MAC layer 525, and the physical layer 530 can all be implemented by the AN. In the femtocell deployment, the second option 505-b can be useful.

Regardless of whether the network access device implements a portion of the protocol stack, the UE can implement the entire protocol stack (eg, RRC layer 510, PDCP layer 515, RLC layer 520, MAC layer 525, and physical layer 530).

FIG. 6 is a diagram 600 illustrating an example of a sub-frame centered on DL. The DL-centric subframe can include a control portion 602. Control portion 602 may exist in the initial or beginning portion of the sub-frame centered at DL. Control portion 602 can include various scheduling information and/or control information corresponding to various portions of the sub-frame centered on the DL. In some configurations, control portion 602 can be an entity DL Control Channel (PDCCH), as indicated in FIG. The DL-centric sub-frame may also include a DL data portion 604. The DL data portion 604 can sometimes be referred to as the payload of the DL-centric subframe. The DL data portion 604 can include communication resources for transmitting DL data from a scheduling entity (e.g., a UE or a BS) to a dependent entity (e.g., a UE). In some configurations, DL data portion 604 can be an entity DL shared channel (PDSCH).

The DL-centric subframe can also include a shared UL portion 606. Shared UL portion 606 may sometimes be referred to as UL short pulses, shared UL short pulses, and/or various other suitable terms. The shared UL portion 606 can include feedback information corresponding to various other portions of the sub-frame centered on the DL. For example, the shared UL portion 606 can include feedback information corresponding to the control portion 602. Non-limiting examples of feedback information may include ACK signals, NACK signals, HARQ indicators, and/or various other suitable types of information. The shared UL portion 606 can include additional or alternative information, such as information related to random access channel (RACH) procedures, scheduling requests (SR), and various other suitable types of information. As shown in FIG. 6, the end of the DL data portion 604 can be separated from the beginning of the shared UL portion 606 in time. Such time separation can sometimes be referred to as a gap, a guard period, a guard interval, and/or various other suitable terms. Such separation provides time for switching from DL communication (e.g., receiving operations by a dependent entity (e.g., UE)) to UL communications (e.g., transmissions by a subordinate entity (e.g., UE)). Those skilled in the art will appreciate that the foregoing is only one example of a sub-frame centered on the DL, and that there may be alternative structures having similar features without necessarily departing from the various aspects described herein.

FIG. 7 is a diagram 700 illustrating an example of a UL-centric subframe. The UL-centric subframe can include a control portion 702. Control portion 702 can exist in the initial or beginning portion of the UL-centric subframe. The control portion 702 in FIG. 7 can be similar to the control portion described above with reference to FIG. The UL-centric subframe may also include a UL data portion 704. The UL data portion 704 can sometimes be referred to as the payload of the UL-centric subframe. The UL data portion may represent a communication resource for transmitting UL data from a dependent entity (eg, a UE) to a scheduling entity (eg, a UE or a BS). In some configurations, control portion 702 can be an entity DL Control Channel (PDCCH).

As shown in FIG. 7, the end of the control portion 702 can be separated from the beginning of the UL data portion 704 in time. Such time separation can sometimes be referred to as a gap, a guard period, a guard interval, and/or various other suitable terms. Such separation provides time for switching from DL communication (e.g., a receiving operation by a scheduling entity) to UL communication (e.g., transmission by a scheduling entity). The UL-centric subframe may also include a shared UL portion 706. The shared UL portion 706 in FIG. 7 can be similar to the shared UL portion 706 described above with respect to FIG. The shared UL portion 706 may additionally or alternatively include information related to channel quality indicators (CQI), sounding reference signals (SRS), and various other suitable types of information. Those skilled in the art will appreciate that the foregoing is merely an example of a UL-centric sub-frame, and that where there is no need to deviate from the various aspects described herein, alternative structures having similar features may exist.

In some cases, two or more slave entities (eg, UEs) may communicate with each other using the secondary link signals. Real-life applications for such secondary link communications may include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Things (IoE) communications, IoT communications, mission critical Mesh, and/or various other suitable applications. In general, the secondary link signal may represent a signal transmitted from one slave entity (e.g., UE1) to another slave entity (e.g., UE2) without relaying the communication via a scheduling entity (e.g., UE or BS). Even if the scheduling entity can be used for scheduling and/or control purposes. In some instances, the licensed spectrum may be used to transmit the secondary link signal (as opposed to a wireless local area network that typically uses an unlicensed spectrum).

The UE may operate in various radio resource configurations including configurations associated with transmitting pilot frequencies using a dedicated set of resources (e.g., Radio Resource Control (RRC) dedicated state, etc.), or with the use of a shared resource set. The configuration associated with the pilot frequency is transmitted (eg, RRC shared state, etc.). When operating in an RRC-dedicated state, the UE may select a dedicated set of resources for transmitting pilot signals to the network. When operating in the RRC shared state, the UE may select a shared resource set for transmitting pilot signals to the network. In either case, the pilot frequency signal transmitted by the UE may be received by one or more network access devices (eg, AN or DU or portions thereof). Each receiving network access device can be configured to receive and measure pilot signals transmitted on a set of shared resources, and also receive and measure to be allocated to the UE (for the UEs, the network is stored The fetching device is a pilot frequency signal transmitted on a dedicated set of resources for a member of the set of network access devices monitored by the UE. The CU receiving one or more of the network access devices or receiving the measurement result to which the network access device transmits the pilot frequency signal may use the measurement result to identify the serving cell for the UE, or initiate the use A change in the serving cells of one or more UEs in the UEs. Example reduced power mode for millimeter wave base stations

The millimeter wave (mm wave) band is being considered for deployment in 5G communication networks because it provides a large amount of bandwidth with potential for space reuse. However, the mm wave band has high atmospheric attenuation and high penetration loss compared to operation in lower frequencies. In some cases, some modern network architectures may include multiple layers including a low frequency macro cover layer and a high frequency capacity layer. Due to the high penetration loss caused by the nature of the high frequency wave, in some cases, the mm wave band can be deployed as a capacity layer of the network architecture, while the lower 6 GHz spectrum can be deployed as a coverage layer of the network architecture. However, in this case, when the mm wave small cell (SC) is densely deployed, even with the ON/OFF mode, mm is used due to the high equivalent isotropic radiated power (EIRP) (for example, 75 dBm/100 MHz). Interference between wave SCs can also be severe. In addition, the power consumption of the mm-wave SC may be high due to the need to comply with the ERIP requirements and also due to the high signal power required for transmission to compensate for the high path loss of the mm wave.

Accordingly, certain embodiments described herein relate to methods and apparatus that enable mm wave SC to optimize power consumption and reduce interference via the use of reduced power modes.

FIG. 8 illustrates example operations 800 for wireless communication by a wireless device in accordance with various aspects of the present disclosure. The wireless device performing operation 800 can be, for example, a base station. At 802, operation 800 begins with: connecting to a User Equipment (UE) capable of communicating via a first Radio Access Technology (RAT) and a second RAT. At 804, operation 800 continues by transmitting a base information set of a second base station of the second RAT having a smaller coverage area at least partially within the coverage area of the first base station.

9 illustrates example operations 900 for wireless communication by a wireless device in accordance with various aspects of the present disclosure. The wireless device performing operation 900 can be, for example, a base station. At 902, operation 900 begins by: determining that a second base station of the second RAT is transmitting a basic information set of the first base station to a user equipment (UE), wherein the first RAT has an at least partially at the second base station Covers a smaller coverage area within the area. At 904, operation 900 continues: in response to the second base station determining the second RAT transmitting the basic information set of the first base station, stopping transmitting the basic information set and limiting at least the transmission of the reference signal (RS).

FIG. 10 illustrates example operations 1000 for wireless communication by a wireless device in accordance with various aspects of the present disclosure. The wireless device performing operation 1000 may be, for example, a UE. At 1002, operation 1000 begins with: connecting to a first base station of the first RAT. At 1004, operation 1000 continues by obtaining, from the first base station, a basic set of information for the second base station of the second RAT, the second RAT having a smaller coverage at least partially within the coverage area of the first base station region. At 1006, operation 1000 continues: accessing the second base station using the basic information set.

As mentioned above, in some embodiments, certain network architectures may be used such that the mm wave band can be deployed as a capacity layer of the network architecture, while below 6 GHz spectrum can be deployed as a coverage layer of the network architecture. Thus, in some embodiments, sub-6 GHz macrocells (eg, LTE or NR) and one or more mm wave SCs (eg, LTE or NR) may work cooperatively. In some embodiments, the UE may be connected to cells below 6 GHz while also attempting to connect to one or more mm-wave SCs to benefit from more capacity. In such an embodiment, at this point in time, one or more mm wave SCs may not attach to any UE or serve any UE. In such an embodiment, two techniques or schemes for reducing power consumption and interference of the mm wave SC can be implemented. Figure 11 provides an exemplary graphical representation of Scheme A and Scheme B.

According to Scheme A, in some embodiments, the mm wave SC may only transmit a reference signal (RS) to the UE in a very sparse manner in the time domain and enter the deep sleep mode for the remainder of the time. More specifically, in such an embodiment, the lower than 6 GHz macro cell may send a basic set of information of the mm wave SC to the UE on behalf of the mm wave SC (eg, the off state). In some embodiments, the assistance from cells below 6 GHz macros may allow the mm wave SC to stop transmitting the basic set of services. Therefore, the mm wave SC can transmit only the sparse RS for the UE to determine the chirp power level, and enter the deep sleep mode for the rest of the time. As an example, in some embodiments, a cell-specific reference signal can be transmitted in each subframe (which has a rate of 1000 Hz or every millisecond). In such an embodiment, the sparse RS may be sent less frequently, for example, every few milliseconds. More specifically, for example, a sparse RS may be transmitted at intervals of every 1 ms, every second, or anywhere in the range of 1 ms to 1 second (eg, typically a multiple of 20 ms). For example, the sparse RS can be transmitted every 40 ms, 120 ms, 160 ms, 200 ms, or 320 ms. In some embodiments, the basic information set (described in further detail with respect to FIG. 12) may include a mm wave SC cell ID, a primary information block (MIB), a system information block (SIB), a mm wave cell digit scheme (eg, SCS, 60KHz, 120KHz, micro time slot) and / or frame configuration (for example, stand-alone subframe configuration - DL or UL).

According to Scheme B, in some embodiments, the mm wave SC can be in a full deep sleep mode (ie, fully off). More specifically, in such an embodiment, the lower than 6 GHz macro cell may represent the mm wave SC to transmit the basic information set of the mm wave SC and the mm wave SC position information (BS coordinate + coverage) to the UE. Therefore, the mm wave SC can be completely turned off and does not transmit any message, but only the chirp message of the UE transmitted before the UE attempts to access the mm wave SC. In some embodiments, the chirp message is an uplink message with a UE ID sent by the UE to provide information about the UE to the base station. In some embodiments, the chirp message may include a sequence (Zadoff-Chu or other pseudo-random sequence) and the ID of the UE.

In some embodiments, using a basic set of information received from less than 6 GHz macro cells, the UE can find the nearest mm wave SC by comparing the mm wave SC BS position (coordinates) with the UE's own location. Subsequently, the UE may access the mm wave SC by transmitting a chirp message using resources (eg, frequency, synchronization, etc.) of the target mm wave SC.

Moving now to Figures 12 and 13, Figures 12 and 13 describe Schemes A and B in more detail, respectively. Figure 12 illustrates that in some embodiments, sub-6 GHz macrocells (cell 1) and multiple mm wave SCs (cell 2, cell 3, and cell 4) work cooperatively. Below the schematic of cells 1-4, Figure 12 also illustrates the sequence of messages transmitted and received by the UE, mm-wave SC, and below 6 GHz macrocells for use in UE connection with mm-wave SC.

As described above, according to the scheme A, the mm wave SC can use the sparse mode to transmit only the RS, and the lower than 6 GHz macro cells can represent the mm wave SC to transmit the basic information set to the UE. This is illustrated via Figure 12, where the UE in the coverage area of mm-wave SC (cell 2) can receive message 1.1 from mm-wave SC and receive message 1.2 from below 6 GHz macro-cell (cell 1). Message 1.1 may include a sparse RS with a cell ID of mm wave SC, while message 1.2 may include a basic set of information. In some embodiments, after receiving the message 1.1, the UE may measure the RS, and then the UE may select the target mm wave SC with which to establish a connection based on the RS. In some embodiments, the UE may receive RS from more than one mm wave SC. In some embodiments, the UE may select the mm wave SC with the largest transmit power or select more than one mm wave SC with the first N received transmit powers.

As shown at the bottom of Figure 12, after selecting one mm wave SC (eg, cell 2) or more mm wave SC (eg, cell 2 and cell 3), the UE may be to mm wave SC (eg, cell 2) Or multiple mm wave SCs (eg, cells 2 and 3) send a chirp message (eg, message 3). In some embodiments, the chirp signal power can be estimated by measuring the RS received power from one or more mm-wave SCs using open loop power control. In some embodiments, if the UE transmits a chirp message to more than one mm wave SC, the UE may transmit the different parameter sets (eg, power, resources, etc.) based on the configuration of each target mm wave SC. Chirp message. In response to receiving the chirp message from the UE, one or more mm wave SCs may exit the deep sleep mode and send a response chirp message (e.g., message 4) with the required system information.

Moving now to Figure 13, Figure 13 illustrates that in some embodiments, sub-6 GHz macrocells (cell 1) and multiple mm wave SCs (cell 2, cell 3, and cell 4) work cooperatively. Below the schematic of cells 1-4, Figure 13 also illustrates the sequence of messages transmitted and received by the UE, mm-wave SC, and below 6 GHz macrocells for use in one or more connections between the UE and the mm-wave SC.

As previously mentioned, according to Scheme B, in some embodiments, the mm wave SC may be in a full deep sleep mode (ie, no RS is transmitted), while a lower than 6 GHz macro cell may represent the mm wave SC to send a message 1 to the UE. In some embodiments, message 1 may include a basic information set (content of message 1.2 of FIG. 10) and mm wave SC position information (BS coordinates + coverage). In such an embodiment, the BS location information may include coordinates and coverage information that may assist the UE in selecting the nearest mm wave SC.

After receiving the message 1 from the lower 6 GHz macro cell, the UE may select one or more mm wave SCs closest to the UE by comparing each mm wave SC to its own distance. In such an embodiment, the UE may be in the coverage of the target mm wave SC such that the distance between the UE and the target SC may be less than the coverage of the mm wave SC. As shown at the bottom of FIG. 13, in some embodiments, following selection of one or more mm-waves SC, the UE may transmit one or more chirp messages to the selected mm-wave SC (eg, message 3) ). In such an embodiment, the chirp power may be estimated via open loop power and via a distance from the UE to one or more mm waves SC. In response to receiving the chirp message from the UE, one or more mm wave SCs may exit the deep sleep mode and send a response chirp message (e.g., message 4) with the required system information.

Figure 14 illustrates in more detail what the basic information set can include. In some embodiments, the basic information set (ie, the content of message 1.2 of FIG. 10) may include general information as well as mm wave-specific information. In some embodiments, the general information may include mm wave cell ID, carrier ID, bandwidth, subframe number (SFN), and the like. In some embodiments, the mm wave-specific information may include a mm wave cell digit scheme (eg, carrier spacing (SCS) 15 kHz / 30 kHz / 60 kHz / 120 kHz / 3.75 kHz tone interval, normal CP and extended CP, time slot duration , micro time slot, etc.), frame configuration (for example, stand-alone subframe configuration - DL or UL).

In some embodiments, the basic information set can include at least one of the following: a cell digital scheme (15 kHz/30 kHz/60 kHz/120 kHz/3.75 kHz tone interval, normal CP and extended CP, time slot duration, micro time) Slots, etc., carrier type (eg, LTE and NR NB or eNB and gNB), carrier frequency and/or band type indication (eg, below 6 GHz carrier and mm wave carrier, due to PSS/ for both types) SSS/PBCH digital schemes are different), position of one or more mm-wave SCs, measurement RS details (eg, RS mode, period, bandwidth, etc.), information related to PRACH/linear frequency modulation (sequence, format) , power control parameters, etc.).

Additionally, in some embodiments, the message 1.2 of FIG. 14 can be transmitted with as little resource consumption as possible, since less than 6 GHz macro cells can send messages 1.2 on behalf of multiple mm-wave SCs. Thus, in such an embodiment, the message 1.2 is transmitted on behalf of a plurality of mm-wave SCs, and may be via one or a combination of TDM, FDM, CDM, or spatial multiplexing (ie, a particular beam for the mm-wave SC). Being multiplexed. Additionally, in some embodiments, message 1 of FIG. 13 may also be transmitted with as little resource consumption as possible for the same reason. Thus, Message 1 can also be multiplexed via one or a combination of TDM, FDM, CDM, or spatial multiplexing (ie, a particular beam for mm wave SC).

It is important to note that the embodiments described above can also be applied to situations in which one or more lower than 6 GHz LTE or NR cells can be used as small in the capacity layer instead of one or more mm wave SCs. cell. In such an embodiment, for example, cell 1 can be less than 6 GHz cells, while cells 2-4 can also be one or more cells below 6 GHz that provide delivery throughput. Moreover, although in the embodiments described above with respect to Figures 11-13, the lower 6 GHz BS is a macro cell that provides wireless coverage, the mm wave BS can also be used to provide wireless coverage in the overlay of the network architecture. In addition, as described above, a base station in the overlay (eg, lower than 6 GHz macro cells or mm wave SC) and a base station in the capacity layer (eg, below 6 GHz macro cells or mm wave SC) may use any radio Access technologies such as Long Term Evolution (LTE) or New Radio (NR).

The methods disclosed herein comprise one or more steps or actions for implementing the methods described. The method steps and/or actions may be interchanged with each other without departing from the scope of the invention. In other words, the order and/or use of specific steps and/or actions may be modified without departing from the scope of the claims.

As used herein, a phrase referring to at least one of the item list "represents any combination of the items, including a single member." For example, "at least one of: a, b, or c" is intended to encompass a, b, c, ab, ac, bc, and abc, and any combination with multiples of the same element (eg, aa, aaa, aab, aac) , abb, acc, bb, bbb, bbc, cc, and ccc or any other ordering of a, b, and c).

As used herein, the term "decision" includes a wide variety of actions. For example, a "decision" can include calculating, computing, processing, deriving, investigating, reviewing (eg, viewing in a table, database, or another data structure), ascertaining, and the like. In addition, "decision" may include receiving (eg, receiving information), accessing (eg, accessing data in memory), and the like. In addition, "decision" can include parsing, selecting, selecting, establishing, and the like.

The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the scope of the patent application is not intended to be limited to the scope shown herein, but is to be accorded to the full scope of the text claim, and unless specifically stated otherwise, the reference to the singular element is not intended to mean. One and only one, but one or more. Unless specifically stated otherwise, the term "some" refers to one or more. All structural and functional equivalents of the elements of the various aspects described in the present disclosure are specifically incorporated herein by reference, and are intended to be It is known or will be known. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is expressly stated in the scope of the patent application. No request element is to be interpreted in accordance with the provisions of Patent Law. § 112, paragraph 6, unless the element is explicitly stated using the phrase "components for", or in the case of a method request, The elements are recorded using the phrase "steps for...".

The various operations of the methods described above can be performed by any suitable means capable of performing the corresponding function. Such components may include various hardware and/or software components and/or modules including, but not limited to, circuits, special application integrated circuits (ASICs), or processors. In general, where there are operations illustrated in the figures, the operations may have corresponding counterpart component plus functional elements with similar numbers.

For example, the means for transmitting and/or the means for receiving may include one or more of the following: a transmit processor 420 of the base station 110, a TX MIMO processor 430, a receive processor 438, or an antenna 434, And/or a transmit processor 464, a TX MIMO processor 466, a receive processor 458, or an antenna 452 of the user equipment 120. Additionally, the components for generation, the components for multiplexing, and/or the components for the application may include one or more processors, such as controller/processor 440 and/or user device 120 of base station 110. Controller/processor 480.

The various illustrative logic blocks, modules, and circuits described in connection with the present disclosure can utilize a general purpose processor, digital signal processor (DSP), special application integrated circuit (ASIC) designed to perform the functions described herein. A field programmable gate array (FPGA) or other programmable logic device (PLD), individual gate or transistor logic, individual hardware components, or any combination thereof, implemented or executed. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller or state machine. The processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

If implemented in hardware, the example hardware settings can include processing systems in the wireless node. The processing system can be implemented using a busbar architecture. The bus bar can include any number of interconnect bus bars and bridges depending on the particular application of the processing system and overall design constraints. The bus can connect various circuits including the processor, machine readable media, and bus interface. In addition, the bus interface can also be used to connect the network adapter to the processing system via the bus. Network adapters can be used to implement the signal processing functions of the PHY layer. In the case of the user terminal 120 (see FIG. 1), a user interface (eg, a keypad, display, mouse, joystick, etc.) can also be connected to the busbar. The busbars can also be connected to various other circuits such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will therefore not be further described. The processor can be implemented using one or more general purpose and/or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits that can execute software. Those skilled in the art will recognize how to best implement the functionality described for a processing system based on the particular application and overall design constraints imposed on the overall system.

If implemented in software, the functions may be stored on or transmitted over the computer readable medium as one or more instructions or codes. Whether referred to as software, firmware, mediation software, microcode, hardware description language, or other terms, software should be interpreted broadly to mean instructions, materials, or any combination thereof. Computer readable media includes both computer storage media and communication media, including any media that facilitates the transfer of computer programs from one place to another. The processor can be responsible for managing the bus and general processing, including executing software modules stored on a machine readable storage medium. The computer readable storage medium can be coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be an integral part of the processor. For example, the machine readable medium can include a transmission line, a carrier modulated by the data, and/or a computer readable storage medium having instructions stored thereon separate from the wireless node, all of which can be streamed by the processor The interface is accessed. Alternatively or in addition, the machine readable medium or any portion thereof may be integrated into the processor, for example, the cache memory and/or the general register stack may be the case. For example, examples of machine-readable storage media may include RAM (random access memory), flash memory, ROM (read only memory), PROM (programmable read-only memory), EPROM (can be erased) Except for programmable read-only memory), EEPROM (electronic erasable programmable read-only memory), scratchpad, diskette, optical disk, hard drive, or any other suitable storage medium, or any combination thereof. Machine readable media can be embodied in computer program products.

A software module can include a single instruction or many instructions, and can be distributed over several different code segments, distributed among different programs, and distributed across multiple storage media. Computer readable media can include multiple software modules. The software module includes instructions that, when executed by a device, such as a processor, cause the processing system to perform various functions. The software module can include a transmitting module and a receiving module. Each software module can be located in a single storage device or distributed across multiple storage devices. For example, when a trigger event occurs, the software module can be loaded from the hard drive into RAM. During execution of the software module, the processor can load some of the instructions into the cache to increase the access speed. One or more cache memory lines can then be loaded into the general scratchpad heap for execution by the processor. It will be understood that when the functionality of the software module is referred to below, such functionality is implemented by the processor when executing instructions from the software module.

In addition, any connection is properly referred to as computer readable media. For example, if you use a coaxial cable, fiber optic cable, twisted pair cable, digital subscriber line (DSL), or wireless technology (such as infrared (IR), radio, and microwave) to transmit software from a website, server, or other remote source, then coaxial Cables, fiber optic cables, twisted pair, DSL, or wireless technologies (eg, infrared, radio, and microwave) are included in the definition of the media. As used herein, disks and discs include compact discs (CDs), laser discs, compact discs, digital versatile discs (DVDs), floppy discs, and Blu-ray® discs, where the discs are usually magnetically replicated. Information, while CDs use lasers to optically replicate data. Thus, in some aspects, the computer readable medium can include non-transitory computer readable media (eg, tangible media). Moreover, for other aspects, the computer readable medium can include temporary computer readable media (eg, signals). The above combination should also be included in the scope of computer readable media.

Thus, certain aspects may include a computer program product for performing the operations provided herein. For example, such a computer program product can include a computer readable medium having instructions stored thereon (and/or encoded) that can be executed by one or more processors to perform the operations described herein.

In addition, it should be appreciated that modules and/or other suitable components for performing the methods and techniques described herein can be downloaded and/or otherwise applied by a user terminal and/or a base station, where applicable. obtain. For example, such a device can be coupled to a server to facilitate the transfer of means for performing the methods described herein. Alternatively, the various methods described herein may be provided via a storage component (eg, RAM, ROM, physical storage media such as a compact disc (CD) or floppy disk, etc.) to cause the user terminal and/or base station Various methods are available when coupling or providing the storage member to the device. Moreover, any other suitable technique for providing the methods and techniques described herein to a device can be used.

It should be understood that the scope of the patent application is not limited to the precise arrangements and elements shown. Various modifications, changes and variations can be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the invention.

100‧‧‧Wireless network

102a‧‧‧ macro cells

102b‧‧‧ macro cells

102c‧‧‧ macro cells

102x‧‧‧pic cells

102y‧‧‧ femto cells

102z‧‧‧ femto cells

110‧‧‧BS

110a‧‧‧BS

110b‧‧‧BS

110c‧‧‧BS

110r‧‧‧ relay station

110x‧‧‧BS

110y‧‧‧BS

110z‧‧‧BS

120‧‧‧UE

120r‧‧‧UE

120x‧‧‧UE

120y‧‧‧UE

130‧‧‧Network Controller

200‧‧‧Distributed Radio Access Network (RAN)/Local Architecture

202‧‧‧Access Node Controller (ANC)

204‧‧‧Next Generation Core Network (NG-CN)

206‧‧‧5G access node

208‧‧‧TRP

210‧‧‧Next Generation AN(NG-AN)

300‧‧‧Distributed RAN

302‧‧‧Centralized Core Network Unit (C-CU)

304‧‧‧Centralized RAN unit (C-RU)

306‧‧‧DU

412‧‧‧Source

420‧‧‧Transmission processor

430‧‧‧Transmit (TX) Multiple Input Multiple Output (MIMO) Processor

432a‧‧‧Transformer (MOD)

432t‧‧‧Transformer (MOD)

434a‧‧‧Antenna

434t‧‧‧Antenna

436‧‧‧MIMO detector

438‧‧‧ receiving processor

439‧‧‧ data slot

440‧‧‧Controller/Processor

442‧‧‧ memory

444‧‧‧ Scheduler

452a‧‧‧Antenna

452r‧‧‧Antenna

454a‧‧‧Antenna

454r‧‧‧Antenna

456‧‧‧MIMO detector

458‧‧‧ processor

460‧‧‧ processor

462‧‧‧Source

464‧‧‧Transmission processor

466‧‧‧TX MIMO processor

480‧‧‧Controller/Processor

482‧‧‧ memory

500‧‧‧ Figure

505-a‧‧‧ first option

505-b‧‧‧ second option

510‧‧‧ Radio Resource Control (RRC) layer

515‧‧‧ Packet Data Convergence Agreement (PDCP) layer

520‧‧‧Wireless Link Control (RLC) layer

525‧‧‧Media Access Control (MAC) layer

530‧‧‧ entity (PHY) layer

600‧‧‧ Figure

602‧‧‧Control section

604‧‧‧DL data section

606‧‧‧Shared UL section

700‧‧‧ Figure

702‧‧‧Control section

704‧‧‧UL data section

706‧‧‧Shared UL section

800‧‧‧ operation

802‧‧‧ square

804‧‧‧ square

900‧‧‧ operation

902‧‧‧ square

904‧‧‧ square

1000‧‧‧ operation

1002‧‧‧ square

1004‧‧‧ squares

1006‧‧‧ square

In order to be able to understand the above-described features of the present invention in detail, a more specific description (a briefly summarized above) can be made by referring to the various aspects, some of which are illustrated in the drawings. It is to be noted, however, that the appended drawings are in the drawing

1 is a block diagram conceptually illustrating an example telecommunications system in accordance with certain aspects of the present disclosure.

2 is a block diagram illustrating an example logical architecture of a decentralized RAN in accordance with certain aspects of the present disclosure.

3 is a diagram illustrating an example physical architecture of a decentralized RAN in accordance with certain aspects of the present disclosure.

4 is a block diagram conceptually illustrating an example BS and user equipment (UE) in accordance with certain aspects of the present disclosure.

FIG. 5 is a diagram illustrating an example for implementing a protocol stack in accordance with certain aspects of the present disclosure.

Figure 6 illustrates an example of a DL-centric sub-frame in accordance with certain aspects of the present disclosure.

Figure 7 illustrates an example of a UL-centric subframe according to certain aspects of the present disclosure.

8 illustrates example operations for wireless communication by a wireless device in accordance with certain aspects of the present disclosure.

9 illustrates example operations for wireless communication by a wireless device in accordance with certain aspects of the present disclosure.

FIG. 10 illustrates example operations for wireless communication by a wireless device in accordance with certain aspects of the present disclosure.

11 is an illustration of an exemplary diagram of a collection of wireless communication technologies in accordance with certain aspects of the present disclosure.

12 illustrates an example network architecture and signal flow diagram corresponding to a wireless communication technology in accordance with certain aspects of the present disclosure.

Figure 13 illustrates an example network architecture and signal flow diagram corresponding to wireless communication techniques in accordance with certain aspects of the present disclosure.

Figure 14 illustrates an example table containing a set of basic information in accordance with certain aspects of the present disclosure.

To facilitate understanding, the same element symbols have been used to designate the same elements that are common to the drawings, where possible. It is contemplated that elements disclosed in one aspect may be beneficially utilized in other aspects without the need for specific details.

Domestic deposit information (please note according to the order of the depository, date, number)

Foreign deposit information (please note in the order of country, organization, date, number)

Claims (30)

A method for wireless communication by a first base station of a first radio access technology (RAT), comprising the steps of: communicating with a user equipment capable of communicating via the first RAT and a second RAT (UE) a connection; and transmitting a basic information set of a second base station of the second RAT, the second RAT having a smaller coverage area at least partially within a coverage area of the first base station. The method of claim 1, further comprising the step of: transmitting location information of the second base station. The method of claim 2, wherein the location information comprises at least one of a coordinate of the second base station or a coverage area. The method of claim 1, further comprising the step of obtaining the basic information of the second base station. The method of claim 1, wherein the set of basic information includes at least a cell number scheme and a frame configuration for a cell served by the second base station. The method of claim 1, wherein the first RAT is at least one of a Long Term Evolution (LTE) RAT and a New Radio (NR) RAT. The method of claim 1, wherein the second RAT is at least one of a Long Term Evolution (LTE) RAT and a New Radio (NR) RAT. The method of claim 1, wherein the first base station is at least one of a lower than 6 GHz macro cell and a mm wave small cell. The method of claim 1, wherein the second base station is at least one of a lower than 6 GHz macro cell and a mm wave small cell. A method for wireless communication by a first base station of a first radio access technology (RAT), comprising the steps of: determining that a second base station of a second RAT is being directed to a user equipment (UE Transmitting a basic information set of the first base station, wherein the first RAT has a smaller coverage area at least partially within a coverage area of the second base station; and responding to the determining a second RAT The second base station is transmitting a basic information set of the first base station, stops transmitting the basic information set and limits transmission of the reference signal (RS). The method of claim 10, further comprising the step of receiving a chirp signal from the UE, the chirp signal having a transmission power based on the RS signal. The method of claim 11, further comprising the step of responding to the chirp signal by exiting deep sleep and transmitting a response chirp message with system information. The method of claim 11, further comprising the step of connecting to the UE based at least in part on the chirp signal. The method of claim 10, wherein the step of limiting transmission of the RS comprises the step of transmitting the RS at least every 1 second. The method of claim 10, wherein the set of basic information includes at least a cell number scheme and a frame configuration for a cell served by the first base station. The method of claim 10, wherein the first RAT is at least one of a Long Term Evolution (LTE) RAT and a New Radio (NR) RAT. The method of claim 10, wherein the second RAT is at least one of a Long Term Evolution (LTE) RAT and a New Radio (NR) RAT. The method of claim 10, wherein the first base station is at least one of a lower than 6 GHz macro cell and a mm wave small cell. The method of claim 10, wherein the second base station is at least one of a lower than 6 GHz macro cell and a mm wave small cell. The method of claim 10, wherein the first base station is a millimeter wave small cell, and the second base station is a lower than 6 GHz macro cell. A method for wireless communication by a user equipment, comprising the steps of: connecting to a first base station of a first radio access technology (RAT); obtaining one of the second RATs from the first base station a basic information set of the second base station, the second RAT having a smaller coverage area at least partially within a coverage area of the first base station; and using the basic information set to access the second base station. The method of claim 21, further comprising the steps of: obtaining location information of the second base station from the first base station; and using the location information to access the second base station. The method of claim 22, wherein the location information comprises at least one of a coordinate of the second base station or a coverage area. The method of claim 21, further comprising the steps of: monitoring a reference signal (RS) sent by the second base station; and transmitting a chirp signal to the second BS, the chirp signal having a signal based on the RS signal A transmission power. The method of claim 24, wherein the chirp is transmitted based on the RS signal using an open loop power control. The method of claim 21, wherein the first RAT is at least one of a Long Term Evolution (LTE) RAT and a New Radio (NR) RAT. The method of claim 21, wherein the second RAT is at least one of a Long Term Evolution (LTE) RAT and a New Radio (NR) RAT. The method of claim 21, wherein the first base station is at least one of a lower than 6 GHz macro cell and a mm wave small cell. The method of claim 21, wherein the second base station is at least one of a lower than 6 GHz macro cell and a mm wave small cell. The method of claim 21, wherein the first base station is a mm-wave small cell, and the second base station is a lower than 6 GHz macro cell.