优化参数 提升数据业务信道承载效率

TBFLIMIT参数优化后,数据业务重点区域在话务量和数据流量变化不大的情况下,无线利用率平均下降15%～20%,减缓了数据业务对网络的压力。数据业务占用资源的增速远远高于传统的语音业务,成为移动网络负荷最主要的增长点之一。中国移动部分地方公司网络上数据流量的迅速增长使无线利用率一度超过90%。通过对高无线利用率的分析,     

浅析移动网络中的WAP网关流量压缩技术

目前移动用户的大量增长,各种数据增值业务应运而生,运营商之间的竞争日益激烈,移动网络面对的巨大的挑战.为解决高数据业务量引发网络资源的压力及大量数据业务对无线网络和核心网资源的消耗,重点对WAP网关流量压缩技术进行了分析,并对现网业务采用流量压缩技术的前后进行了对比分析.     

TD-LTE高话务场景网络调整方案研究

本文研究了TD-LTE高话务场景下的网络优化调整方案,探讨了用户业务预测、资源数据配置、无线优化参数配置、应急方案等方面的具体设置方法, 对于TD-LTE网络高话务场景时的网络优化建设方案提供重要的借鉴和参考。     

优化无线资源利用率提升CDMA网络数据业务性能

文章分析了某地联通C网话音业务和数据业务增长状况以及数据业务迅猛增长带来的网络压力，实施了缓解网络拥塞、降低SCH分配失败率、优化数据业务流量和性能、有效利用网络资源和提高数据业务质量的无线侧底层RF无线环境优化、SCH软切换和功率控制参数优化，优化，同时配合无线载波扩容和排查基站隐性故障等措施和方法以及上层协议栈TCP参数和RLP参数的联合为C网的发展提供了有效地支撑和保障。     

GPRS相关无线参数浅析

对于移动通信网络的服务性能(小区覆盖、信令流量分布和网络业务性能等),网络中与无线设备和接口有关的参数设置至关重要。GPRS技术为GSM网络提供分组数据业务,它有自己独立的有别于一般GSM网络的无线参数设置。文章试图对与GPRS相关的部分重要无线资源参数加以分析,供业内人士参考。     

基于无线数据业务智能优化系统算法的研究与应用

针对业界GPRS/EDGE无线数据优化方法、算法不完善,工作效率低的问题,广西联通通过长期研究建立了一套优化经验方法和较适合现网的参数配置、算法,并将这套方法、算法应用到自主开发的无线数据业务智能优化系统中,使系统实现自动采集分析数据、自动提供优化方案、自动执行优化方案、自动生成优化报告功能,使无线数据业务优化工作朝着智能化方向迈进。     

GPRS无线网络优化探讨

GSM网作为GPRS的承载网，决定了GPRS网络与GSM网络优化相互关联，又相互制约，因此加强GSM无线环境的优化工作对于GPRS的优化十分重要。综合考虑GPRS系统的特点，GPRS无线系统的优化应遵循如下原则．最大化频谱资源利用率，挖掘现有设备的资源利用率，提高投资效益比的原则；在保证GSM质量的基础上，尽可能提高GPRS服务质量，即话音优先的原则；GPRS无线信道的分配初期至少设置一个静态PDCH，以后根据GPRS的流量调整PDCH分配。     

基于无线网络优化平台专题应用 ——数据语音均衡分析

随着国内用户数和数据流量的快速增长,给无线信道资源和相关网元资源带来了严峻的考验。为了保持良好的发展态势,在做到以客户感知为基础,不段提高客户满意度的同时,要加快解决数据网络高速的发展所带来的对GSM无线资源竞争的问题。在围合理配置GPRS/EGPRS空口信道PDCH的问题下,结合网优平台数据语音均衡分析专题整理出一套合理的优化指导思路。     

高话务密度区的网络容量及资源评估方法探讨

文章主要介绍利用信息技术分析解决蜂窝网络容量及资源评估的方法,针对网络频率规划,话务数据、网络无线性能数据、基站运维数据,利用数据仓库和数据挖掘技术对数据进行处理,有效对网络容量及资源利用状况进行分析。提供网络负荷及话务发展预测,依据话务分布及话务增长数据,评估现有信道资源使用状况。解决好网络质量中的网络容量和资源利用的问题。     

GSM和TD-SCDMA网络负荷均衡策略分析

1前言 经过多年的建设和发展,中国移动GSM网络已经成熟,语音业务特别是移动数据业务发展迅速,部分地区的数据等效话务量占比已接近或超过语音话务量。移动数据业务流量在“十二五”期间将获得爆发式增长,未来运营商网络将步入以数据业务流量为主的时代,需要解决数据业务对无线资源的大量需求。     

GSM与GPRS无线网络协调优化分析

GPRS无线网络以GSM无线网络作为其承载网,这决定了GPRS网络优化具有与GSM网络优化相互关联、相互制约的特点.本文介绍GPRS无线网络优化的主要流程和内容,综合考虑对现有GSM无线网络的影响,合理利用现有无线网资源,以效益最大化为目标,实现两个网络的优化平衡.     

无线分组域时分信道资源计算方法

GPRS技术曾经希望使用话音业务剩余的无线资源提供分组数据的传输.实际网络运营时,为了提高用户满意度,运营商必须付出额外的成本,分配GPRS专用信道.本文提出了一种使用坎贝尔算法的GPRS无线资源分配算法,考虑了用户期望带宽和小区吞吐量,这两个参量分别代表了用户利益和运营商利益,算法给出了利益妥协结果下需要的GPRS无线信道配置.本文还介绍了另外两种资源分配算法,并进行了性能比较.     

The Complementary Use of 3G WCDMA and GSM/GPRS Cellular Radio Networks

The traffic performance of integrated 3G wide-band code division multiple access (WCDMA) and GSM/GPRS network is evaluated. This type of network links two cellular radio systems which have different set of frequency bands and the same coverage size. The base station of 3G WCDMA is installed on an existing GSM/GPRS site. Dual-mode mobile terminals use handoff to establish calls on the better system. The soft handoff or inter-frequency hard handoff occurs when mobile terminals of 3G WCDMA or GSM/GPRS move between two adjacent cells, respectively. The inter-system hard handoffs are used between 3G WCDMA and GSM/GPRS systems. The data rate conversions between different systems, soft handoff region size, multiple data rate multimedia services, and the effect of the mobile terminal mobility on the user mean dwell time in each system are considered in the study. The simulation results demonstrate that a great traffic performance improvement on the complementary use of 3G WCDMA and GSM/GPRS cellular radio networks compared with the use of GSM/GPRS cellular radio networks. When high-data rate transmission is chosen for low-mobility subscribers, both the handoff failure probability, and carried traffic rates increase with the new call generation rate. However, both rates decrease conversely with the increasing new call generation rate as soon as the new call generation rate exceeds a critical value. This causes the integrated networks saturation. The higher mean speed for the mobile terminals produces lower new call blocking probabilities and total carried traffic. The new call blocking probabilities and total carried traffic increase with the size of the soft handoff region.     

End-to-End Adaptive QoS Provisioning over GPRS Wireless Mobile Network

The General Packet Radio Service (GPRS) offers performance guaranteed packet data services to mobile users over wireless frequency-division duplex links with time division multiple access, and core packet data networks. This paper presents a dynamic adaptive guaranteed Quality-of-Service (QoS) provisioning scheme over GPRS wireless mobile links by proposing a guaranteed QoS media access control (GQ-MAC) protocol and an accompanying adaptive prioritized-handoff call admission control (AP-CAC) protocol to maintain GPRS QoS guarantees under the effect of mobile handoffs. The GQ-MAC protocol supports bounded channel access delay for delay-sensitive traffic, bounded packet loss probability for loss-sensitive traffic, and dynamic adaptive resource allocation for bursty traffic with peak bandwidth allocation adapted to the current queue length. The AP-CAC protocol provides dynamic adaptive prioritized admission by differentiating handoff requests with higher admission priorities over new calls via a dynamic multiple guard channels scheme, which dynamically adapts the capacity reserved for dealing with handoff requests based on the current traffic conditions in the neighboring radio cells. Integrated services (IntServ) QoS provisioning over the IP/ATM-based GPRS core network is realized over a multi-protocol label switching (MPLS) architecture, and mobility is supported over the core network via a novel mobile label-switching tree (MLST) architecture. End-to-end QoS provisioning over the GPRS wireless mobile network is realized by mapping between the IntServ and GPRS QoS requirements, and by extending the AP-CAC protocol from the wireless medium to the core network to provide a unified end-to-end admission control with dynamic adaptive admission priorities.     

Charging Information Collection Modeling and Analysis of GPRS Networks

Charging is one of the most important functionalities in a telecommunication service system. In a general packet radio service (GPRS) wireless network, the load of charging information flow depends on the intensity of call traffic and the size of charging records. During busy hours, the GPRS network might not be able to transfer charging records on a timely basis if new charging records are generated too fast. On the other hand, when a call happens, the related charging information must be collected and transferred to the billing system. If a failure of the data link occurs, a secondary data link must be employed to transfer the charging information. However, this redundant operation might result in charging information duplication. This paper formally addresses these two issues. A timed Petri net model is built to support the analysis of the charging system performance versus various factors when the system works in the normal status, which, in particular, gives the maximum supportable busy hour call attempts of the GPRS network. The Petri net approach is also used to model and verify the correctness of the redundancy operation in case a connection failure occurs.     

Channel allocation for GPRS

Based on the GSM radio architecture, the general packet radio service (GPRS) provides users data connections with variable data rates and high bandwidth efficiency. In the GPRS service, allocation of physical channels is flexible, i.e., multiple channels can be allocated to a user. We propose four algorithms for the GPRS radio resource allocation: fixed resource allocation (FRA), dynamic resource allocation (DRA), fixed resource allocation with queue capability (FRAQ), and dynamic resource allocation with queue capability (DRAQ). We develop analytic and simulation models to evaluate the performance for these resource allocation algorithms in terms of the acceptance rate of both GPRS packet data and GSM voice calls. Our study indicates that DRAQ (queuing for both new and handoff calls) outperforms other algorithms     

中国联通GPRS网络无线资源配置及优化

中国联通的GPRS网络陆续开通并投入商用,由于其独有的特点,GPRS网络无线资源的优化显得尤为重要.结合中国联通的cama 1x和中国移动的GPRS网络运行情况,以及从中国联通GSM网络和用户需求等实际情况出发,对GPRS网络的PDCH信道资源进行估算和优化修正.     

The Efficiency of Engineering Traffic Across Network Boundaries

With the arrival of wideband packet and circuit-oriented data services, it becomes a challenge to provide efficiently the desired quality of service for speech, packet data, and real-time data on a network. As these diverse networks will coexist, architectural studies on integrated heterogeneous networks suggest that a common radio resource manager be used to coordinate radio resource allocation between diverse network types. Initial studies show that supernets, which engineer traffic across wireless networks, are more efficient than operating separate cellular/wireless networks. Increased sharing occurs in supernets because a larger number of services compete for a larger pool of resources. If sharing can be shown to be efficient in general, then supernets should likewise be more efficient. This study decomposes the two-dimensional Markov chain to prove when sharing is beneficial and when it is not.     

Outage Probability in GSM-GPRS Cellular Systems With and Without Frequency Hopping

General packet radio service(GPRS) is designed for transmitting packet data andis supposed to take its radio resource from the pool ofunused channels of GSM voice services. Obviously, theintroduction of GPRS has an impact on the voice services.In this paper, we present a method to calculate theoutage probability of the GSM-GPRS network for bothnon-frequency hopping and frequency hoppingsystems. This method takes into account Rayleighfading, power control (with error), discontinuoustransmission, and frequency hopping (if applied). Theoutage probability of voice services affected by theintroduction of GPRS is discussed. The number ofunused voice channels allocated to GPRS depends on thedifference between the outage level of the existingGSM network and the maximum acceptable level. Thefrequency hopping system can accommodate more GPRStraffic than the non-frequency hopping system. Thepower control error has more impact on systemperformance when more channels are allocated to GPRS.Beyond our expectations, for the non-frequency hoppingsystem, the channels provided for GPRS are not muchdifferent between high channel occupancy and lowchannel occupancy of voice services. In contrast, for thefrequency hopping system, the system can provide morechannels for GPRS at low channel occupancy. The cellservice area decreases by about 10% 20% for eachadditional channel allocated to GPRS.