公开(公告)号：US20040008643A1

公开(公告)日：2004-01-15

申请号：US10194329

申请日：2002-07-12

Applicant: Nortel Networks Limited

Inventor： Parthasarathy Guturu ,  Abdennaceaur Lachtar

IPC: H04Q007/00

CPC classification number: H04W36/12

Abstract: This invention presents an efficient and efficacious method for an equitable distribution of wireless traffic across the 800 and 1900 MHz bands. Even though traffic distribution across bands is desirable, there is a risk of call failure because of location of the mobile in the vicinity of a BTS group with low capacity in the other band. The method proposed here tells how decisions to migrate calls across bands can be made robust against call failures without imposing unreasonable constraints that make such decisions sparing. It presents: (i) a simple and effective quality measure for carrier-to-carrier comparison; (ii) convergence criteria flagging the convergence of the best carrier determination process for each BTS site using the afore mentioned quality measure; (iii) an effective procedure for their implementation; (iv) a decision procedure for selection of the band and carrier for call setup based on the best carriers of individual sites within the possible reach of the mobile in the two bands; and (v) an overall method that makes use of these components. It also presents method of extending this invention to next generation wireless systems that possibly operate in more than two frequency bands.

Abstract translation: 本发明提出了一种用于在800和1900MHz频带上公平分配无线业务的有效和有效的方法。 即使在频段上的业务分布是可取的，由于移动站在另一频带中具有低容量的BTS组附近，存在呼叫失败的风险。 这里提出的方法说明如何使呼叫跨越频段迁移的决策能够对呼叫失败产生强大的影响，而不会施加不合理的约束，从而使得这种决策得到保护。 它提出：（i）载波与载波比较的简单有效的质量测量; （ii）使用上述质量测量标记每个BTS站点的最佳载波确定过程的收敛的收敛标准; （iii）有效的执行程序; （iv）基于在两个频带内移动台可能达到的各个站点的最佳载波，选择用于呼叫建立的频带和载波的决策程序; 和（v）利用这些组件的整体方法。 它还提出了将本发明扩展到可能在两个以上频带中操作的下一代无线系统的方法。